A plane has an airspeed of 400 mph . The pilot wishes to reach a destination 800 mi due east, but a wind is blowing at 60 mph in the direction 30 ∘ north of east.
Part A
In what direction must the pilot head the plane in order to reach her destination?
Part B
How long will the trip take?
Answers
The plane's heading is 4.61 degrees south of east, which is the direction the pilot needs to steer the plane in order to reach her objective and the trip takes 1.83 hours.
What is the distance?Distance is a numerical representation of the distance between two objects or locations.
The distance can refer to a physical length or an estimate based on other factors in physics or common use. |AB| is a symbol for the distance between two points A and B.
Let the pilot's heading be theta south with an east direction. The resultant the velocity will be;
\(\rm 400 sin(\theta) - 50 sin(40) = 0 \\\\\ \rm 400 sin(\theta) - 37.25 = 0 \\\\ \ \theta= sin^{-1}\frac{37.25}{400}\\\\ \theta = 4.61^0\)
Hence the direction of the plane heading is 4.61 degrees south of east
b)
The resultant speed of the plane(V)is found as;
\(\rm V= 400 cos(4.61) + 50 cos(40)\\\\ V = 437 miles/hr \\\\ T = \frac{800}{437}\\\\ T = 1.83 hour\\)
Hence, the trip takes 1.83 hours.
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Related Questions
How is heat transferred by convection?
Answers
Answer:
Convective heat transfer is the transfer of heat between two bodies by currents of moving gas or fluid. In free convection, air or water moves away from the heated body as the warm air or water rises and is replaced by a cooler parcel of air or water.
Explanation:
Hope this helped and have a great day
Heat can be transferred by convection through liquids. Heat travels where warmer liquid rises and cooler liquid sinks. An example of this can be heating up a pot of water. Hope this helps!
. A load of 250 kg is hung by a crane’s cable. The load is pulled by a horizontal force such that the cable makes a 300 angle to the vertical plane. If the load is in the equilibrium, calculate the magnitude of the tension in the cable.
Answers
If the load is in the equilibrium, the magnitude of the tension in the cable is equal to 1,414.5 Newton.
Given the following data:
Mass of load = 250 kgAngle of inclination = 30°Scientific data:
Acceleration due to gravity = 9.8 \(m/s^2\)To calculate the magnitude of the tension in the cable, if the load is in the equilibrium:
First of all, we would determine the tension caused by the horizontal component of the force:
\(\sum F_y ; Tcos\theta - mg=0\\\\Tcos\theta = mg\\\\T=\frac{mg}{cos\theta} \\\\T=\frac{250 \times 9.8}{cos30} \\\\T= \frac{2450}{0.8660}\)
T = 2,829.1 Newton
The magnitude of the tension in the cable is given by:
\(\sum F_x ; F - Tsin\theta = 0\\\\F = Tsin\theta\\\\F = 2829.1sin30\\\\F = 2829.1 \times 0.5\)
F = 1,414.5 Newton.
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6.
What is a collision?
a. Two objects coming in contact with each other
b. Two objects repelling each other
c. Two external forces creating movement of an object
d. Two internal forces creating movement of an object
P
Answers
Answer:
Easy
Explanation:
A: two obje
cts making contact
A wheel turns with angular speed of 30 rev/s is brought to rest with constant acceleration. It turns 60 rev before it stops. Calculate its angular in rad/s²
Answers
Since the angular acceleration α is constant,
0² - (30 rev/s)² = 2α (60 rev)
Solve for α :
α = -(30 rev/s)²/(120 rev) = -7.5 rev/s²
One revolution corresponds to an angular displacement of 2π radians, so
α = (-7.5 rev/s²) × (2π rad/rev) ≈ -47.12 rad/s²
A short tennis player hits a ball that is
r meters from their elbow with an angular acceleration
αalpha. A tall tennis player hits a ball with the same angular acceleration where the ball is
2, r from their elbow .
Answers
The tangential acceleration of the short player's ball is twice the tangential acceleration of the tall player's ball.
How does the acceleration affect the ball?The ball of the shorter player experiences twofold of the ball of the taller player's tangential acceleration. The reason behind this is that the magnitude of the tangential acceleration correlates directly with the radius of the circle.
The ball belonging to the smaller player is positioned nearer to the elbow, resulting in a decreased radius. It can be deduced from this statement that the ball of the short player experiences twice the magnitude of tangential acceleration compared to the ball of the tall player.
The answer is: ashort = 2atall
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The Complete Question
A short tennis player hits a ball that is r meters from their elbow with an angular acceleration a. A tall tennis player hits a ball with the same angular acceleration where the ball is 2r from their elbow. How does the tangential acceleration of the short player's ball Ashort compare with the tall player's ball a tall? Choose 1 answer: ashort 2atall ashort Otall ashort 1 atall 2
A beam of light, incident on a flat water surface, reflects from the mirror-like surface so that the angle of incidence equals the angle of reflection. The water has waves. Would individual light beams obey the law of reflection in this case?
Answers
Answer:
a protractor
Explanation:
because protractors measure angles
Which of these accurately identify characteristics of light and mechanical waves? Select the TWO (2) that apply.
A. Light waves are electromagnetic waves that can travel through a vacuum.
B. Mechanical waves can travel through a vacuum
C. Light waves need a medium through which to travel.
D. Water waves are examples of mechanical waves.
Answers
The two correct statement are A and B. Light waves are electromagnetic waves that can travel through a vacuum. Mechanical waves can travel through a vacuum.
What is an electromagnetic wave?
EM waves are the electromagnetic radiations are made up of electromagnetic waves created when an electric field collides with a magnetic field.
Electromagnetic waves may alternatively be defined as the combination of oscillating electric and magnetic fields.
Electrically charged particles experiencing acceleration create electromagnetic waves, which can then interact with other charged particles and exert force on them.
The two correct statement is;
1. Light waves are electromagnetic waves that can travel through a vacuum.
2. Mechanical waves can travel through a vacuum.
Hence,two correct statement are A and B.
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Which of the following is a chemical property?
Reactivity
Phase at room temperature (Solid, liquid, or gas)
Electrical conductivity
Luster (shininess)
Answers
A soccer ball is kicked with an initial horizontal velocity of 11 m/s and an initial vertical velocity of 17 m/s.
1)what is the initial speed of the ball?20.25 m/s
2)what is the initial angle 0 of the ball with respect to the ground? 57.09 degrees
3)what is the maximum height the ball goes above the ground? 14.74m
I need help with 4,5 and 6
4)How far from where it was kicked will the ball land?
5) what is the speed of the ball 2.5 second after it was kicked?
6)how high above the ground is the ball 2.5 seconds after it is kicked?
Answers
The answers are 4. The distance from where the ball was kicked is 38.06 meters, 5. The speed of the ball 2.5 seconds after it was kicked is 13.82 m/s, and 6. The ball is 21.88 meters above the ground 2.5 seconds after it is kicked.
4) To calculate the distance from where the ball was kicked, we need to find the time it takes to reach the ground. We can use the fact that the vertical displacement of the ball is zero at the highest point. Using the formula vf = vi + at, the time it takes to reach maximum height is t = vf / g where g is the acceleration due to gravity which is -9.8 m/s² since it is downward and vf is the final velocity which is 0 because the ball comes to rest at the highest point. t = 17 / 9.8 = 1.73 s. This means the total time for the ball to hit the ground is 2 x 1.73 = 3.46 s. Using the formula for horizontal distance traveled d = vt, we get d = 11 x 3.46 = 38.06 m. So, the distance from where the ball was kicked will be 38.06 meters.5) To calculate the speed of the ball 2.5 seconds after it was kicked, we need to find the horizontal and vertical components of the velocity of the ball at 2.5 seconds. The horizontal component is constant, so it will still be 11 m/s. To find the vertical component, we use the formula vf = vi + at where vi is initial velocity, a is acceleration due to gravity which is -9.8 m/s² and t is the time which is 2.5 seconds. vf = 17 + (-9.8 x 2.5) = -7.5 m/s. Since the ball is moving downward, the velocity is negative. Therefore, the speed of the ball 2.5 seconds after it was kicked is sqrt(11² + (-7.5)²) = 13.82 m/s.6) To calculate how high above the ground is the ball 2.5 seconds after it is kicked, we use the formula for the displacement of an object in the vertical direction y = vi*t + (1/2)*a*t² where vi is initial velocity, a is acceleration due to gravity which is -9.8 m/s² and t is the time which is 2.5 seconds. y = 17*2.5 + (1/2)*(-9.8)*(2.5)² = 21.88 m. So, the ball is 21.88 m above the ground 2.5 seconds after it is kicked.For more questions on speed
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19. If an atom has an atomic number of 6 and a
mass number of 14, how many protons,
electrons, and neutrons are in the atom?
Answers
Answer:
protons: 6
electrons: 6
neutrons: 8
Explanation:
atomic number -> number of protons -> 6
mass number -> number of protons + number of neutrons
so 14-6 = 8. 8 neutrons
this atom is neutral (net charge is 0), so the number of electrons is the same as the number of protons, which is 6
In a study conducted by a University of Illinois researcher, the football team at Unity High School in Tolono, IL was equipped for an entire season with helmets containing accelerometers. Information about every impact in practice and in games was sent to a computer present on the sidelines. The study found that the average force on a top of the head impact was 1770 N. If the initial velocity of the head was 2.09 m/s and the collision brings the head to a stop, and assuming the head has a mass of 4.12 kg, determine the duration of the impact.
(Note: we are treating the head as a free body which is a bit of an approximation).
Answers
The duration (i.e time) of the impact, given that the head impact was 1770 N is 0.005 s
How do I determine the duration (i.e time)?Impulse is defined as the change in momentum of an object. It is expressed as:
Impulse = change in momentum
Impulse = final momentum – Initial momentum
Impule = m(v - u)
Impulse = force × time
Impulse = Ft
Thus,
Ft = m(v - u)
Where
F is the force t is the timem is the massu is the initial velocityv is the final velocityNow, we can obtain the duration (i.e time) of the impact. Details below:
Force (F) = 1770 NInitial velocity = 2.09 m/sMass (m) = 4.12 KgFinal velocity = 0 m/sDuration (t) =?Ft = m(v + u) since the collision came to a stop
1770 × t = 4.12 × (0 + 2.09)
1770 × t = 4.12 × 2.09
Divide both sides by 1770
t = (4.12 × 2.09) / 1770
t = 0.005 s
Thus, the duration is 0.005 s
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A student has a large number of coins of different diameters, all made of the same metal. She wishes to find the density of the metal by a method involving placing the coins in water.
a) State the formula needed to calculate the density.
b) Describe how the measurements of the required quantities are carried out.
Answers
Answer:
a)density = mass /volume
b)to find volume put water into a container .measure the level of water , put the coins into the beaker containing water , measure the level of water again, subtract the new volume withe the first one . the result is the volume of coins
A sound wave is traveling with a frequency of 880Hz. It has a wavelength of 0.75. What is the speed of the sound wave
Answers
The speed of the sound wave is 660 meters per second.
To calculate the speed of the sound wave, we need to use the formula:
Speed = Frequency x Wavelength
Here, the frequency of the sound wave is given as 880Hz, and the wavelength is given as 0.75. To get the answer, we just need to plug these values into the formula and solve for the speed:
Speed = 880 x 0.75
Speed = 660 meters per second
It's important to note that the speed of sound depends on the medium through which it is traveling. In air, the speed of sound is approximately 343 meters per second at standard temperature and pressure. However, this value can change depending on factors such as temperature, humidity, and altitude.
Understanding the speed of sound is important in various fields, such as music, engineering, and physics. For example, in music, the speed of sound determines the pitch of a note, while in engineering, it can be used to design and optimize acoustic systems. In physics, it's used to study the properties of waves and to explain phenomena such as Doppler effect and sonic booms.
Therefore, the speed of the sound wave is 660 meters per second.
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You want to average 90 km/h on a car trip. You cover the first half of the distance at an
average speed of 48 km/h.
a) What average speed must you have for the second half of the trip to meet your goal?
b) Is this reasonable? Note that the velocities are based on half the distance, not half the
time.
Answers
(a) The average speed must you have for the second half of the trip to meet your goal is 8 km/h.
(b) The value obtained (8 km/h) is not reasonable for the second half of the distance since the first half is 48km/h.
What is average velocity?
Average velocity is defined as the change in position or displacement (∆x) divided by the time intervals (∆t) in which the displacement occurs.
average velocity = total distance / total time
v = (d)/(0.5d/v₁ + 0.5d/v₂)
where;
v is the average velocityv₁ is the average velocity during the first halfv₂ is the average velocity during the second half90 km/h = (d) / (0.5d/48 + 0.5d/v₂)
90(0.5d/48 + 0.5d/v₂) = d
0.9375d + 0.5d/v₂ = d
d(0.9375 + 0.5/v₂) = d
0.9375 + 0.5/v₂ = 1
0.5/v₂ = 0.0625
v₂ = 0.5/0.0625
v₂ = 8 km/h
Thus, the average speed must you have for the second half of the trip to meet your goal is 8 km/h.
The value obtained (8 km/h) is not reasonable for the second half of the distance since the first half is 48km/h.
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Engineers are working on a design for a cylindrical space habitation with a diameter of 7.50 km and length of 29.0 km. The habitation will simulate gravity by rotating along its axis. With what speed (in rad/s) should the habitation rotate so that the acceleration on its inner curved walls equals 8 times Earth's gravity
Answers
Answer:
The speed will be "0.144 rad/s".
Explanation:
Given that,
Diameter,
d = 7.50 km
Radius,
R = \(\frac{7.5}{2} \ Km\)
Acceleration on inner curve,
= 8 times
Now,
As we know,
⇒ \(\omega^2R=8g\)
or,
⇒ \(\omega=\sqrt{\frac{8g}{R} }\)
On substituting the values, we get
⇒ \(=\sqrt{\frac{8\times 9.8}{\frac{7.5}{2}\times 10^3 } }\)
⇒ \(=\sqrt{\frac{78.4}{3750} }\)
⇒ \(=\sqrt{0.0209}\)
⇒ \(=0.144 \ rad/s\)
URGENT URGENT DUE SOON!!
Which statement describes a question that can guide the design of a
scientific investigation?
A. It asks about a cause-and-effect relationship between two
variables.
B. It asks about the preferred outcome of the investigation.
C. It asks about whether a controlled variable is necessary.
D. It asks about how the observations will be organized.
Answers
Answer:
A.
Explanation:
Im just guessing because it sounds like it describes a hypothesis the most and you said its urgent
1. A roller coaster cart of mass m = 341 kg starts
stationary at point A, where h1 = 23.3 m and
a while later is at B, where h2 = 9.3 m.
The acceleration of gravity is 9.8 m/s^2
2.What is the speed of the cart at B, ignoring
the effect of friction?
Answer in units of m/s. Answer in units of
m/s.
Answers
The speed of the cart at B is 16.56 m/s (ignoring the effect of friction).
What is law of conservation of energy?Energy cannot be created or destroyed, according to the law of conservation of energy. However, it is capable of change from one form to another. An isolated system's total energy is constant regardless of the types of energy present.
According to conservation of energy:
decrease in potential energy = increase in kinetic energy
341 × 9.8 × 23.3 - 341 × 9.8 × 9.3 = 1/2 × 341 ×v²
v² = 2 × 9.8 × (23.3 - 9.3)
v = 16.56 m/s.
Hence, the speed of the cart at B is 16.56 m/s.
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Calculate Time
d
12. A vehicle drives a distance of 26000 m at a speed of 65m/s, calculate the time taken for
this journey.
13. A train travels at a speed of 16 m/s and travel a distance of 3200 m, calculate the time it
takes the train to complete this journey.
urs 14. Calculate the time it takes to travel a distance of 672 km at a speed of 96 km/h.
15. A beetle travels at a speed of 0.09 m/s, it travels a distance of 1.08 m before it is caught
in a jar. Calculate the time taken for the beetle to run.
16. Carlisle is a distance of 35 miles away from Lockerbie. If I travelled at a constant speed
5147
deudate the time takon for this journey
Answers
12. The time taken for the journey is 400 s
13. The time taken for the train is 200 s
14. The time taken is 7 h
15. The time taken for the beetle is 12 s
16. The time taken for the journey is 0.0068 h
How do i determine the time taken?The time taken in each case as given by the question can be obtain as follow:
12. The time taken for the journey
Distance traveled = 26000 mSpeed = 65 m/s Time taken =?Time taken = Distance / Speed
Time taken = 26000 / 65
Time taken = 400 s
13. The time taken for the train
Distance traveled = 3200 mSpeed = 16 m/s Time taken =?Time taken = Distance / Speed
Time taken = 3200 / 16
Time taken = 200 s
14. The time taken to travel
Distance traveled = 672 kmSpeed = 96 Km/h Time taken =?Time taken = Distance / Speed
Time taken = 672 / 96
Time taken = 7 h
15. The time taken for the beetle
Distance traveled = 1.08 mSpeed = 0.09 m/s Time taken =?Time taken = Distance / Speed
Time taken = 1.08 / 0.09
Time taken = 12 s
16. The time taken for the journey
Distance traveled = 35 milesSpeed = 5147 mile per hourTime taken =?Time taken = Distance / Speed
Time taken = 35 / 5147
Time taken = 0.0068 h
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derivation of green's function for schrodinger wave equation?
Answers
The derivation of Green's function for the Schrödinger wave equation involves using the concept of superposition of solutions to find a particular solution for a given initial condition.
Green's function is a fine tool that's used to break discriminational equations, including the Schrödinger equation. The idea behind Green's function is to find a result to the discriminational equation that satisfies a given original condition. In the environment of the Schrödinger equation, Green's function represents the probability breadth of chancing a flyspeck at a particular position at a particular time, given that it started from a known original position and time.
The Green's function is attained by working the Schrödinger equation for a delta function source at the original position. To decide Green's function, one can consider the Schrödinger equation with a delta function source at some original position. This leads to the result for the surge function as a sum of two terms- a free flyspeck term and a term due to the delta function source.
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1. A soccer player kicks a soccer ball towards the goal. If she kicks it with a velocity of 24 m/s at an angle of 31 degrees above the ground, how high will the ball go?
Answers
Answer:
The ball will go as high as 8.46 m
Explanation:
Projectile Motion
It's the type of motion that experiences an object launched at a certain height above the ground and moves along a curved path exclusively under the action of gravity.
Being vo the initial speed of the object, θ the initial launch angle, and g the acceleration of gravity, then the maximum height hm can be calculated as follows:
\(\displaystyle h_m=\frac{v_o^2\cdot \sin^2\theta}{2g}\)
The soccer ball is kicked at a speed of vo=24 m/s at an angle of θ=31°. Taking the value of \(g=9.8 m/s^2\), then:
\(\displaystyle h_m=\frac{24^2\cdot \sin^2 31^\circ}{2\cdot 9.8}\)
\(\displaystyle h_m=\frac{576\cdot 0.2653}{19.6}\)
\(h_m=7.80~m\)
The ball will go as high as 8.46 m
A 0.0750kg teddy bear is dropped from a deck that is 3.00m above the ground. What will be the velocity of the teddy bear as it strikes the ground?
Answers
The velocity of the teddy bear as it strikes the ground is 7.67 m/s.
Velocity of the teddy when it strikes the ground
The velocity of the teddy when it strikes the ground is calculated from principle of conservation of energy as shown below.
K.E(bottom) = P.E(top)
¹/₂mv² = mgh
v² = 2gh
v = √2gh
where;
h is height of fall of the teddyg is acceleration due to gravityv = √(2 x 9.8 x 3)
v = 7.67 m/s
Thus, the velocity of the teddy bear as it strikes the ground is 7.67 m/s.
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A park ranger driving on a back country road suddenly sees a deer in hisheadlights 20 m ahead. The ranger, who is driving at 11.4 m/s, immediatelyapplies the brakes and slows down with an acceleration of 3.80 m/s2. Howmuch distance is required for the ranger's vehicle to come to rest? Onlyenter the number, not the units.
Answers
Answer:
17.1 m
Explanation:
To know how much distance is required to get a final velocity of 0 m/s, we need to use the following equation:
\(v^2_f=v^2_0+2a(\Delta x)\)Where vf is the final velocity, v0 is the initial velocity, a is the acceleration and Δx is the distance required. So, replacing vf by 0 m/s, v0 by 11.4 m/s, and a by -3.8 m/s² we get:
\(\begin{gathered} 0^2=(11.4)^2+2(-3.8)(\Delta x) \\ 0=129.96-7.6(\Delta x) \end{gathered}\)Then, solving for Δx, we get:
\(\begin{gathered} 7.6\Delta x=129.96 \\ \Delta x=\frac{129.96}{7.6} \\ \Delta x=17.1\text{ m} \end{gathered}\)Therefore, the vehicle required 17.1 m to come to rest.
according to newton’s first law a moving object acted on by a net force of zero....
Answers
Answer:
Newton's first law says that if the net force on an object is zero ( Σ F = 0 \Sigma F=0 ΣF=0\Sigma, F, equals, 0), then that object will have zero acceleration. That doesn't necessarily mean the object is at rest, but it means that the velocity is constant.
Explanation:
According to Newton’s first law of motion, a moving object acted on by a net force of zero will continue in motion.
Newton's first law of motion states that an object in state of rest or uniform motion in a straight line will continue in that state unless it is acted upon by an external force.
This first is also known as the law of inertia because it is the reluctance of an object in motion to stop moving or reluctance of an object at rest to start moving which depends on the mass of the object.
Thus, we can conclude that according to Newton’s first law of motion, a moving object acted on by a net force of zero will continue in motion.
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As elements gain more electrons in their outer shells, their electrical
conductivity generally decreases. Which of the following explains this
phenomenon?
Answers
Electrical conductivity often decreases, when elements receive additional electrons in their outer shells. As a result of the valence shell being filled, the number of movable electrons decreases.
What is a mobile electron?Electrons are mobile charges in the conduction band while holes are mobile charges in the valence band.
Current flow in a semiconductor is caused by charge carrier migration in both the conduction and valence bands.
Which creates a net motion of positively charged carriers in the same direction as the field and negatively charged carriers in the opposite direction as a result of the force.
The outermost electrons in metals are not bonded to each atom which is shared by many atoms. This decentralization is what allows metals to conduct electric currents.
Hence, the elements gain more electrons in their outer shells, and their electrical conductivity generally decreases.
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What is the period of revolution of a satellite with mass (m) that orbits the earth in a circular path of radius 7480 km (about 1100 km) above the surface of the earth)?
Answers
When a mass (m) that orbits the earth in a circular path of radius 7480 km (about 1100 km) above the surface of the earth), the period of revolution of the given satellite is approximately 8207 seconds or 2.28 hours.
The period of revolution of a satellite with mass (m) that orbits the earth in a circular path of radius 7480 km (about 1100 km) above the surface of the earth) can be determined by using Kepler's third law which relates the period of revolution of a satellite to the average radius of its orbit.
Kepler's third law states that the square of the period of revolution of a satellite is proportional to the cube of the average radius of its orbit.
Mathematically, the law can be expressed as: T² = (4π² / GM) × R³Where T is the period of revolution, G is the gravitational constant, M is the mass of the earth, and R is the average radius of the orbit of the satellite.
To find the period of revolution of the given satellite, we can substitute the given values in the equation: R = 7480 km + 6370 km = 13850 kmM = 5.97 × 10²⁴ kgG = 6.67 × 10⁻¹¹ Nm²/kg²T² = (4π² / GM) × R³T² = (4π² / (6.67 × 10⁻¹¹ × 5.97 × 10²⁴)) × (13850 × 10³)³T² = 6.7182 × 10¹⁴ seconds²
Taking the square root of both sides, we get:T = 8.2079 × 10³ seconds
Therefore, the period of revolution of the given satellite is approximately 8207 seconds or 2.28 hours.
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A peacock is flying around and its velocity v as a function of time
t is given in the graph below where rightwards is the positive velocity direction.
Answers
Answer: 3
Explanation:
khan academy
Which of the following is most consistent with the modern theory of evolution?
O Parents pass their physical traits to their offspring; those offspring with traits that help the
O Parents change their physical traits in order to survive in the environment, then those pa
O Life on this planet came from another planet far out in space.
O Living organisms have not changed for hundreds of millions of years.
Answers
Answer:
The theory of evolution by natural selection, first formulated in Darwin's book "On the Origin of Species" in 1859, is the process by which organisms change over time as a result of changes in heritable physical or behavioral traits
If a reflected ray is 55 degrees from the normal line, they what is the angle of the
incident ray from normal?
Answers
Answer:
xplanation:
Angle of reflection is measured between the incident ray and the angle which it makes with the normal at the point where incident ray strikes the mirror surface.
Further on reflection, it makes the same angle i.e. angle of reflection is equal to angle of reflection.
Hence, as angle of incidence is 55∘ angle of reflection too is 55∘ and the angle between the incident ray and the reflected ray is 55∘+55∘=110∘
If an electric iron of 1200W is used for 30minutes every day, find electric energy consumed in the month of November. Also calculate bill amount if the rate of 1 unit = Rs 2
Answers
Answer:
Electric energy produced in the month of April is 18 kWh
Explanation:
Given
P = 1200 W = 1.2 kW
Use time per day = 30 minutes = 1 / 2 hrs
We know,
No. of days in April = 30 days
Total time iron being used
T = 1 / 2 * 30 = 15 hrs
We know,
Energy consumed = Pt
Substituting the value of P and T
= 1.2 kW * 15 hr
= 18 kWh
Hence,
Electric energy produced in the month of April is 18 kWh
Which of the following involves an endothermic reaction?
A. Burning a candle
B. Lighting a gas stove
C. A chemical hand-warmer
D. Photosynthesis in plants