If a ball has 300 Joules of potential energy at its highest point, how much kinetic energy will it have at its highest speed?
A; less than 300 Joules
B; more than 300 Joules
C: exactly 300 Joules
D; cannot be determined
Answers
If a ball has 300 Joules of potential energy at its highest point, Then the kinetic energy is the same at that point i.e exactly 300 Joules. The correct option is (C).
What are kinetic and potential energy?When a body has a mass of m kg and travels a velocity of v m/s then the kinetic energy is given by,
KE=1/2mv²
And when a body is at a height of h meter from the ground and the mass of the body is m kg, then the potential energy is given by,
PE= mgh
Where g= acceleration due to gravity= 9.81m/s²
At The highest point, the kinetic energy is equal to the potential energy.
i.e at the highest point,
KE=PE
Hence If a ball has potential energy at the highest point is 300J that means the kinetic energy at the point is the same i.e 300J.
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Related Questions
¿Cuál de las siguientes no es un tipo de fuerza de roce
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help me pls its for my science class i need to show my work
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Answer:
P = 5880 J
Explanation:
Given that,
The mass of the block, m = 30 kg
The block is sitting at a height of 20 m.
The block will have gravitational potential energy. The formula for gravitational potential energy is given by :
\(P=mgh\\\\=30\times 9.8\times 20\\\\=5880\ J\)
So, the required potential energy is equal to 5880 J.
need help someone please
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Answer:
C would be the correct answer.
How are solar flares different from solar prominences.
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Answer:
What is the difference between a prominence and a solar flare? A prominence is a loop of cool incandescent gas that extends above the photosphere. A solar flare is an explosive release of energy that comes from the sun and causes magnetic ditrubances.
Explanation:
Why can't you hear a sound in space ?
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Answer:
As the vibrations of the particles reach your ear, your ear drum receives the vibrations which the brain then interprets as sound. In the vacuum of space, there are no (or very, very few) particles to vibrate, so sound cannot travel through this medium.
Explanation:
would force of gravity be big or small when an object has a seperation distance in 1 meter
Answers
The final gravitational force will be 1/16th of the initial gravitational force. In other words, the gravitational force will decrease when the objects are moved from 1 meter apart to 4 meters apart.
The gravitational force between two objects depends on their masses and the distance between them. According to Newton's law of universal gravitation, the force is inversely proportional to the square of the distance between the objects and directly proportional to the product of their masses.
Let's assume that the masses of the objects remain constant. If the objects are initially placed 1 meter apart and then moved to a distance of 4 meters, we can calculate how the gravitational force changes.
The formula for the gravitational force is:
F = G * (m1 * m2) / r^2
Where:
F is the gravitational force between the objects.
G is the gravitational constant.
m1 and m2 are the masses of the objects.
r is the distance between the objects.
Assuming the masses and the gravitational constant remain constant, we can compare the initial and final gravitational forces.
Let's denote the initial force as F_initial and the final force as F_final. Using the formula above, we can calculate the ratio of the final force to the initial force:
F_final / F_initial = (G * (m1 * m2) / (4^2)) / (G * (m1 * m2) / (1^2))
= (1 / 16) / (1 / 1)
= 1 / 16
This decrease in the gravitational force is a result of the inverse square law. As the distance between the objects increases, the force weakens exponentially. In this case, the force decreases by a factor of 16 because the distance is quadrupled (from 1 meter to 4 meters).
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The probable question may be:
2 objects are initially placed 1 meter apart. By how much will the gravitational force between the objects change if they are moved to 4 meter apart? Explain and state whether it will increase of decrease.
if the car rolls down the hill ( with engine off) with negligible friction and air resistance what will its kinetic energy be
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Answer:
falling iirc
Explanation:
Which animal can sprint at speeds up to 30 miles per hour?
Answers
Answer:
an ostrich
Explanation:
an ostrich is the animal thar can run 30 mph
Reindeer, Cat (domestic), Kangaroo ,Grizzly bear are the animal can sprint at speeds up to 30 miles per hour.
Speed of Animals -
The majority of the measurements here are for top speeds at about quarter-mile distances. The whippet, which was timed over a 200-yard course; the cheetah, over a 100-yard distance; humans, for a 15-yard segment of a 100-yard run; and the black mamba snake, six-lined race runner, spider, giant tortoise, three-toed sloth, and garden snail, which were measured over various small distances. These are the exceptions, which are included to give a wide range of animals.What animal has the best speed?
Capable of going from 0 to 60 miles per hour in less than three seconds, the cheetah is considered the fastest land animal, though it is able to maintain such speeds only for short distances. Lions are also quite fast when hunting prey, with a top speed of about 50 miles per hour.Learn more about Speed of Animals
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Reactant A and reactant be want to go to a chemical reaction to form products c
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Answer:
i think u already have ur answer
Explanation:
gamma ray radiation has frequencies from 3.0e 19 to 3.0e 24 hz, whereas the frequency region for microwave radiation is 3.0e 8 to 3.0e 11 hz. we can say that: 1. the speed of gamma ray radiation is ... a. higher than b. lower than c. the same as ... microwave radiation.
Answers
According to the question the frequency region for microwave radiation, the speed of gamma ray radiation is the same as microwave radiation.
Radiation refers to the emission or transmission of energy in the form of electromagnetic waves or particles. Microwaves are a type of electromagnetic radiation with wavelengths ranging from approximately 1 millimeter to 1 meter. Both gamma ray radiation and microwave radiation travel at the speed of light in a vacuum, which is approximately 3.0 x 10^8 meters per second. The speed of electromagnetic waves, including gamma rays and microwaves, is determined by the properties of the medium they are passing through, and in a vacuum, they all travel at the same speed. Therefore, the speed of gamma ray radiation is the same as the speed of microwave radiation.
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PLEASE HELP MEE
Two blocks of silver have a temperature of 175°C. One block has a mass of 33g, the other block has a mass of 300g. Do the blocks have the same amount of thermal energy? Why or why not?
Answers
Answer & Explanation FROM YOUR TEACHER:
The blocks does not have the same amount of thermal energy
The mass and temperature of an item are both inversely correlated with thermal energy. Thermal energy is expressed as follows:
Mass times Specific Heat Capacity times Temperature equals thermal energy.
where the material's specific heat capacity relates the amount of heat required to raise a unit mass of the material's temperature by one degree Celsius.
Even if the two blocks are at the same temperature, they will have different quantities of thermal energy since they have different masses. Assuming they are both composed of the same material and have the same specific heat capacity, the block with a mass of 300g will contain more thermal energy than the block with a mass of 33g.
33g × specific heat capacity x 175°C Equals 33g thermal energy of a 33g block.
Heat capacity of a 300g block is equal to 300g times 175°C in terms of thermal energy.
The thermal energy of the two blocks will vary since the masses are different.
What is the rule you would write describing how light reflects off a mirror?
Answers
Answer: The angle of incidence equals the ray of reflection. So this law states that any ray of light that strikes an object will reflect off the object such that the striking or incident angle is identical to the reflecting angle (as measured from the normal).
Explanation:
In a partially-filled array, the capacity may be less than the array's size.
When inserting a value into a partially-filled array, in ascending order, the insertion position may be the same as capacity.
When inserting elements into a partially-filled array, the array should be declared const.
When comparing two partially-filled arrays for equality, both arrays should not be declared const.
When deleting an element from a partially-filled array, it is an error if the index of the element to be removed is < size.
When inserting a value into a partially-filled array, elements following the insertion position are shifted to the left.
In a partially-filled array, the size represents the allocated size of the array.
In a partially-filled array, the capacity represents the effective size of the array.
In a partially-filled array, all of the elements are not required to contain meaningful values
When inserting an element into a partially-filled array, it is an error if size < capacity.
In a partially-filled array, all of the elements contain meaningful values
When deleting elements from a partially-filled array, the array should be declared const.
In a partially-filled array capacity represents the number of elements that are in use.
When searching for the index of a particular value in a partially-filled array, the array should not be declared const.
When inserting a value into a partially-filled array, in ascending order, the insertion position is the index of the first value smaller than the value.
True or False :
Answers
The statement "When inserting an element into a partially-filled array, it is an error if size < capacity" is true. When inserting an element into a partially-filled array, it is an error if size < capacity.How to insert a value into a partially-filled array?
The array should be traversed starting from the right end, where the last value has been placed, until the position of the insertion value is found. If the value is less than or equal to the value at the current position, move one space to the left. Insert the value in the position to the right of the current position when it is greater than the value at the current position. If the insertion position is the same as the array capacity, the value can be inserted at that location.The insertion of the element into the partially filled array shifts all the elements that come after the insertion position to the right. If the element is to be inserted at index k, and the current elements at positions k to size-1, they will be moved to k+1 to size.If the deletion of an element is to be performed in a partially filled array, it is an error if the index of the element to be removed is greater than or equal to the size of the array. The elements will be shifted to the right to fill the vacant position when an element is deleted.The following are true for a partially-filled array:In a partially-filled array, the capacity represents the effective size of the array.In a partially-filled array, all of the elements are not required to contain meaningful values.In a partially-filled array, the size represents the allocated size of the array.The number of elements that are in use is represented by the capacity in a partially-filled array.
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011 10.0 points
The acceleration due to gravity on planet X is one fifth that on the surface of the earth.
If it takes 4.6 s for an object to fall a certain distance from rest on earth, how long would it take to fall the same distance on planet X?
Answer in units of s.
Answers
If it takes 4.6 seconds for an object to fall a certain distance from rest on earth, then it would take 10.29 seconds to fall the same distance on planet X.
What are the three equations of motion?There are three equations of motion given by Newton,
v = u + at
S = ut + 1/2×a×t²
v² - u² = 2×a×s
Keep in mind that these calculations only apply to uniform acceleration.
As given in the problem, The acceleration due to gravity on planet X is one-fifth that on the surface of the earth. If it takes 4.6 s for an object to fall a certain distance from rest on earth, then we have to find how long would it take to fall the same distance on planet X,
By using the second equation of motion given by newton,
Let us suppose the acceleration due to gravity on the earth is 10 m / s²
S = ut + 1/2at²
= 0 + 0.5×10×4.6²
= 105.8 meters
The acceleration due to gravity on planet X = 2 meters / second
S = ut + 1/2at²
105.8 = 0 + 0.5×2×t²
t² = 105.8
t = 10.29 seconds
Thus, it would take 10.29 seconds to fall the same distance on planet X
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What is the relationship between the magnetic force and the distance between the magnets?
Answers
The strength of the magnetic force is inversely proportional to the square of distance between the magnets. Thus, as the distance increases, force between the magnets decreases.
What is magnetic force?Magnetic force, is the force generated by magnetic flux lines arised from a magnetic field. A magnet have a south pole and north pole. There will be repulsive force between two like poles and attractive force between two unlike pole.
The force between two objects is always in inverse proportion with the distance and this is well explained by Coulomb's law of forces.
Thus, F ∝ 1/r² where, r is the distance.
Therefore, as the distance between two magnets increases the magnetic force between them decreases.
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the engineer of an intercity train observes a rock slide blocking the train's path 210.0 m ahead and activates the train's emergency brakes. the train decelerates uniformly at 1.6 m/s2 for 12.10 s before reaching the rock slide. what is the speed with which the train reaches the rock slide?
Answers
The speed with which the train reaches the rock slide is 19.36 m/s
What is acceleration?This is defined as the rate of change of velocity which time. It is expressed as
a = (v – u) / t
Where
a is the acceleration v is the final velocity u is the initial velocity t is the time How to determine the initial velocityFinal velocity (v) = 0 m/sTime (t) = 12.1 sDeceleration (a) = –1.6 m/s²Initial velocity (u) =?The initial velocity of the train can be obtained as illustrated below:
–1.6 = (0 – u) / 12.1
Cross multiply
0 – u = –1.6 × 12.1
– u = –19.36
Divide both sides by –1
u = –19.36 / –1
u = 19.36 m/s
Thus, the train uses 19.36 m/s to reach the rock slide
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Fill out the VIR chart for this electrical circuit
Answers
The current at point A = 3A, The current at B = 6 A, the current at C = 2.25 A, the current at D = 18 A.
What is the current flowing in the circuit?The current flowing in the circuit is calculated as follows;
Same current will be flowing at point A and C since they are in series, while different current will be flowing in the rest of the circuit.
Total resistance is calculated as;
1/R = 1/(3 + 9) + 1/6 + 1/2
1/R = 1/12 + 1/6 + 1/2
R = 1.33
The total current in the circuit;
I = V/R
I = 36 V / 1.33
I = 27 A
Current at B = 36 / 6 = 6 A
Current at D = 36 / 2 = 18 A
Current at A and C = 27 A - (6 + 18)A = 3 A
Current at A = 3 / 12 x 3 A = 0.75 A
current at C = 9 / 12 x 3A = 2.25 A
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When a p.D of 150 qpplied to the plates of a parallel plate. The plate carry a surface charge density of 30nc/cm^2 what is the spacing bettwen the plates
Answers
Answer:
d = 4.425 x 10⁻⁶ m = 4.425 μm
Explanation:
The charge on plates can be given as:
\(q = \sigma A=CV\\where,\\\\C = Capacitance\ of\ parallel\ plate\ capacitor = \frac{\epsilon_oA}{d}\\\\therefore,\\\\\sigma A=(\frac{\epsilon_oA}{d})V\\\\d = (\frac{\epsilon_o}{\sigma})V\)
where,
d = spacing between plates = ?
ε₀ = Permitivity of free space = 8.85 x 10⁻¹² C²/Nm²
σ = surface charge density = (30 nC/cm²)(10⁻⁹ C/1 nC)(1 cm²/10⁻⁴ m²)
σ = 3 x 10⁻⁴ C/m²
V = Potential Difference = 150 V
Therefore,
\(d = \frac{(8.85\ x\ 10^{-12}\ C^2/Nm^2)}{3\ x\ 10^{-4}\ C/m^2}(150\ V)\\\)
d = 4.425 x 10⁻⁶ m = 4.425 μm
Find two specific applications/connections to Newton's first law. In your descriptions, use the terms inertia and balanced/unbalanced forces to describe whether the object in your example changes its state of motion.
Answers
Answer:
Explanation:
every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
Can someone Please Help!!
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Answer:
If the ball is accelerating down through the air with no horizontal motion, the net forces acting on the ball must follow: C. The gravitational force is greater than the drag.
Explanation:
This is because the gravitational force is directed downward and the drag force opposes the direction of motion (therefore the drag force is directed upwards). Since the ball is accelerating downwards, the gravitational force must be greater than the drag force in order to create this acceleration.
We know that the other options are incorrect because if the net force on the ball was directed upwards, the ball would be accelerating upwards. If the net force on the ball was zero, the ball would not be accelerating at all. If the drag was greater than the gravitational force, then the ball would be accelerating upwards as well.
Hope this helps!
What is the defining feature of isotopes of the same element?
Answers
Answer:
Isotope are atoms of the same element that have the same atomic number but different in mass number.
A parachutist is falling at terminal velocity, without her parachute open, What is the direction of her motion, and what is the direction of her acceleration, immediately after she opens the parachute?
Answers
Answer:
Direction - Downwards
Acceleration - Upwards
Explanation:
Terminal velocity means the net force was 0, so when the parachute is introduced the parachutist will feel an unbalanced force upwards thus being accelerated upwards. Still the motion is still going down as although there is an Acceleration upwards, it will take some time for it to accelerate enough to make the velocity 0
how does earths magnetic field compare to other planets?
Answers
No, magnetic fields do not exist on every planet. The magnetic fields of the four gas giants are extremely strong, while those of the Earth and Mercury are fairly strong and Venus and Mars have essentially no detectable magnetic fields.
Mars and Venus don't have much of a magnetic field, according to probes. The magnetic fields of Jupiter, Saturn, Uranus, and Neptune are all far stronger than those of the Earth. Jupiter is the winner since it has the biggest magnetic field. The magnetosphere grows in size as the magnetic field gets stronger. Jupiter's magnetic field, which is around 20,000 times stronger than Earth's magnetic field, generates a magnetosphere that extends over 3 million kilometers from Jupiter before it starts to deflect solar wind.
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Explain why astronomers divide the sun into different layers.
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Answer:
cause why not.
the layers exist cause theoretically the deeper you go the hotter it gets and different atoms just do stuff
What is the mass of the object if it has a density of 657 g/mL and a volume of 32 mL?
Show work!
Answers
Answer:
The answer is 21024g/mL
Explanation:
Multiply 657 by 32:
657
× 32
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻
21024
↳ 21024 g/mL
Solar radiation at the surface of the earth is about 700 W/m2. How much power is incident on a roof of dimensions 12.96 m by 20.43 m?
Answers
Our first step is to find out the area of the roof, which is:
\(A=12.96*20.43=264.7728m^2\)We can then obtain the power by multiplying it to the solar radiation:
\(P=264.7728*700=185340.96W\)Then, our final answer is P=185340.96W
A 100 g ball and a 200 g ball are connected by a 30 cm long massless rigid rod. The balls rotate about their center of mass at 120 rpm. What is the speed of the 100 g ball?.
Answers
The speed of the 100 g ball if the 100 g ball and a 200 g ball are connected by a 30 cm long massless rigid rod and if the balls rotate about their center of mass at 120 rpm is 2.5 m / s
Xcm = m1 r1 + m2 r2 / ( m1 + m2 )
Xcm = Center of mass
m1 = Mass 1
m2 = Mass 2
m1 = 100 g
m2 = 200 g
The center of mass of the two balls measured from the 100 g ball,
Xcm = [ ( 100 * 0 ) + ( 200 * 30 ) ] / ( 100 + 200 )
Xcm = 6000 / 300
Xcm = 20 cm
v1 = r ω
v1 = Speed of m1
r = Distance about which the balls rotate
ω = Angular velocity
r = 20 cm = 0.2 m
ω = 120 rpm
ω = 120 * 2 π / 60
ω = 12.56 rad / s
v1 = 0.2 * 12.56
v1 = 2.5 m / s
Therefore, the speed of the 100 g ball is 2.5 m / s
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Umm please help?? Please right it on your own words so I don’t get in trouble.
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incoming solar radiation in middle latitudes is less in winter than in summer because
Answers
Incoming solar radiation in middle latitudes is less in winter than in summer because the Earth's tilt on its axis affects the amount of sunlight that reaches different parts of the planet.
In middle latitudes, the amount of incoming solar radiation varies throughout the year. During the winter months, the amount of incoming solar radiation is less than during the summer months. During the winter months, the northern hemisphere is tilted away from the sun, meaning there is less sunlight available.
Additionally, the sun is lower in the sky during the winter, so the sun's rays have a longer distance to travel, resulting in lower intensity. Additionally, due to the cooler temperatures winter months tend to have more cloud cover than summer months, which further reduces the amount of incoming solar radiation. Therefore, the amount of incoming solar radiation in middle latitudes is typically less in winter than in summer.
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you and two friends apply force of 400 N to push a piano up a 4.0 m long ramp. How much work in joules has been done when you reach the top of the ramp
Answers
Answer: Work = Force x Distance Work = 400 N x 4.0 m Work = 1600 J
Explanation:
The work done is equal to the force applied multiplied by the distance moved in the direction of the force. In this case, the force applied is 400 N and the distance moved in the direction of the force is 4.0 m. Therefore, the work done is:
Work = Force x Distance Work = 400 N x 4.0 m Work = 1600 J
So, when you reach the top of the ramp, you have done 1600 J of work.