Lexington walked to her friends house.lexie walked 2miles west then 5 miles south then 3 miles east then 4 miles north then 2 miles east and finally 1 mile north what is levies distance and displacement.​

Answer:

the 1 gram wasp

Explanation:

To start off with this problem, write down every piece of information and do neccessary conversions.

mass of bee = 2 grams = 0.002 kg

speed of bee = 1 m/s

mass of wasp = 1 gram = 0.001 kg

speed of wasp = 2 m/s

now, we will use the kinetic energy formula and compare the answers

KE BEE = 0.5 (0.002 kg)(1 m/s)^2 = 0.001 Joules

KE WASP = 0.5(0.001 kg)(2 m/s)^2 = 0.002 Joules

0.002 J > 0.001 J

Explanation:

calculate the applied force in N.

At 3.11 kilometres from the door, the music is just barely audible to someone with a normal hearing threshold.

A threshold is a value, a level, or a border on a scale. A new event or change occurs when the threshold is crossed.

The inverse square law can be used to resolve this issue.

I2/I1 = (r1/r2)²

The formula below can be used to convert intensity level from dB to W/m2:

I = I0 x 10(L/10)

where L is the intensity level in decibels and I0 is the reference intensity of 10(-12) W/m₂.

Inputting the values provided yields:

I2 = 10⁻¹² x 10(126/10) = 1.5848 W/m²

Now we can solve for r2:

1.5848/10⁻¹² = (7.79/r2)²

r2 = √(7.79² x 10¹² / 1.5848) = 3.11 x 10³ m

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Answer: reflection

Explanation: the concave mirror will gather light from distant objects outside of the Earth's atmosphere. since these celestial objects are so far, the rays of light are parallel, and the mirror will reflect it at the focus point, and the image displayed depends on how far away the object is.

Answer:

Explanation:

v = at

v = 60(3)

v = 180 m/s

After multiple contacts with the charged ball, the charge on the rod will be arranged so that the net charge of the rod is zero.

This is because the ball is a conductor, so when it contacts the rod, the charge will spread out evenly over the rod. The rod will then have an equal amount of positive and negative charge.

Electrical charge is the physical property that causes objects to experience a force when they are in an electric field. It is the charge on an object that causes it to be attracted to or repelled from other objects. Positively charged objects will be attracted to negatively charged objects and vice versa. Electrical charge is measured in coulombs, which is the amount of charge that flows through a conductor when a current of one ampere flows for one second.

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The frictional force involved when a penny sinks to the bottom of a wishing well is primarily due to viscous drag or fluid friction. As the penny moves through the water, it experiences resistance from the surrounding fluid. This resistance is caused by the frictional forces between the water molecules and the penny's surface.

Answer:

True

Nitrogen family elements consists of atoms having 5 electrons in their outer energy level.

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The object's final velocity, given the data is 10.5 rad/s

This is defined as the rate of change of velocity which time. It is expressed as

a = (v – u) / t

Where

The following data were obtained from the question

The final velocity can be obtained as follow:

a = (v – u) / t

0.75 = (v – 1.5) / 12

Cross multiply

v – 1.5 = 0.75 × 12

v – 1.5 = 9

Collect like terms

v = 9 + 1.5

v = 10.5 rad/s

Thus, the final velocity of the object is 10.5 rad/s

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Your displacement from where you originally started is determined as 52.05 m.

The resultant displacement of an object is the change in position of the object. It can be described as the shortest distance connecting the final position of the object to the initial position of the object.

Mathematically, resultant displacement is given as;

R² = a² + b² - 2ab cos(θ)

where;

Substitute the given parameters and solve for the resultant displacement of the journey.

R² = (57)² + (45)² - 2(57 x 45) cos(60)

R² = 5274 - 2565

R² = 2,709

R = √2709

R = 52.05 m

Thus, your displacement from where you originally started is determined as 52.05 m.

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The potential energy of the roller coaster is 176,400 J (joules).

The potential energy of an object is given by the formula PE = mgh, where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height or vertical position of the object.

In this case, the roller coaster is at a peak of 20m and has a mass of 900kg. The acceleration due to gravity, g, is approximately 9.8 \(m/s^2\).

Using the formula, we can calculate the potential energy:

PE = mgh

= (900 kg)(9.8 \(m/s^2\))(20 m)

= 176,400 J

Therefore, the potential energy of the roller coaster is 176,400 J (joules).

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The brightness of a source with luminosity L is given by:

Suppose that expression represents the original brightness if we increase the distance four times, then the new brightness is given by:

This means that the brightness will decrease by 16 times. Therefore, the answer is D.

Answer: A tsunami is a very long-wavelength wave of water that is generated by sudden displacement of the seafloor or disruption of any body of standing water.  Tsunami are sometimes called "seismic sea waves", although they can be generated by mechanisms other than earthquakes.  Tsunami have also been called "tidal waves", but this term should not be used because they are not in any way related to the tides of the Earth.  Because tsunami occur suddenly, often without warning, they are extremely dangerous to coastal communities. Ocean trenches are steep depressions in the deepest parts of the ocean [where old ocean crust from one tectonic plate is pushed beneath another plate, raising mountains, causing earthquakes, and forming volcanoes on the seafloor and on land.  

Explanation:

Answer:

The moment of inertia of disc about own axis is 1 kg-m².

Explanation:

Given that,

Mass of ring m= 1 kg

Moment of inertia of ring at diameter \((I_{r})_{d}=1\ kg\ m^{2}\)

The radius of metallic ring and uniform disc both are equal.

So, \(R_{r}=R_{d}\)

We need to calculate the value of radius of ring and disc

Using theorem of perpendicular axes

\((I_{r})_{c}=2\times (I_{r})_{d}\)

Put the value into the formula

\((I_{r})_{c}=2\times1\)

\((I_{r})_{c}=2\ kg\ m^2\)

Put the value of moment of inertia

\(MR_{r}^2=2\)

\(R_{r}^2=\dfrac{2}{M}\)

Put the value of M

\(R_{r}^2=\dfrac{2}{1}\)

So, \(R_{r}^2=R_{d}^2=2\ m\)

We need to calculate the moment of inertia of disc about own axis

Using formula of moment of inertia

\(I_{d}=\dfrac{1}{2}MR_{d}^2\)

Put the value into the formula

\(I_{d}=\dfrac{1}{2}\times1\times2\)

\(I_{d}=1\ kg\ m^2\)

Hence, The moment of inertia of disc about own axis is 1 kg-m².

To find

What does the displacement time wave graph determine?

Explanation

The slope of a displacement-time graph gives us velocity.

So the displacement-time wave graph is used to determine the wave velocity of a wave.

Conclusion

Displacement -time wave graphs can be used to determine the wave velocity of a wave

i) The initial deceleration of the car is -1.6 m/s² and  the time taken is 5 seconds

ii) The final deceleration is -1 m/s²

iii) The total dispalcement = 1016 m

The initial deceleration of the car is given by the formula below:

v² = u² + 2as

where;

Solving for a;

12² = 20² + 2 * a * 80

a = -1.6 m/s²

Time taken, t = v - u / a

t = 12 - 20 / (-1.6)

t = 5 seconds

Final deceleration:

a = v - u / t

a = 0 - 12 / 12

a = -1 m/s²

iii) Displacement at constant velocity = 12 * 1 * 60

Displacement at constant velocity = 720 m

Final displacement, s = ut + 0.5at²

s = 12 * 12 + 0.5 * 1 * 12²

s = 216 m

Total dispalcement = 80 + 720 + 216

Total dispalcement = 1016 m

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The current in amps 5.00 milliseconds after the switch is moved to disconnect the battery, if the initial current was 11 A found to be 1.488A.

Inductors oppose changes in current through them by dropping a voltage directly proportional to the rate of change of current, as opposed to resistors, which merely oppose the flow of current through them (by dropping a voltage directly proportional to the current).

I (t=5ms) = Io exp (- Rt/L)

             => 11 exp (- 3 x 5 / 7.5)

             => 1.488A.

Similar to series circuits, when resistors and inductors are combined in parallel circuits, the overall impedance will have a phase angle between 0° and +90°. The phase angle of the circuit current will be between 0° and -90°.

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acceleration = change of speed / time

a = Δv / t

Since the speed remains constant, acceleration is zero.

1) 0.0 m/s

The wave function of the resultant wave, Y1 + Y2 is Y = 4.95sin[π(3.80x - 1180t - 0.206)].

The wave function Y1 describes a sinusoidal wave with an amplitude of 4.95 meters, a wavelength of λ = 2π/3.8 ≈ 1.65 meters, and a frequency of f = 1180/3.8 ≈ 310 Hz. The phase of the wave is such that the maximum displacement occurs at x = 0 and t = 0, and the wave is moving in the negative x direction.

The wave function Y2 also describes a sinusoidal wave with the same amplitude and wavelength as Y1, but with a phase difference of 0.25 seconds. This means that Y2 is shifted to the left (negative x direction) by a distance of Δx = λΔφ/2π = λ(0.25)/2π ≈ 0.206 meters. The frequency and speed of Y2 are the same as Y1.

To determine the resultant wave Y, we add the two wave functions: Y = Y1 + Y2. Using the trigonometric identity sin(a + b) = sin(a)cos(b) + cos(a)sin(b), we can simplify the expression for Y:

Y = 4.95sin[π(3.80x - 1180t)] + 4.95sin[π(3.80x - 1180t)cos(0.25) + cos(π/2)sin(0.25)]

Y = 4.95sin[π(3.80x - 1180t)] + 4.95sin[π(3.80x - 1180t + 0.25)]

Y = 4.95sin[π(3.80x - 1180t - 0.206)]

The resultant wave Y is a sinusoidal wave with the same amplitude and wavelength as Y1 and Y2, but with a phase shift and a different waveform due to interference. The frequency and speed of Y are also the same as Y1 and Y2.

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-- The given question is incomplete, the complete question is

"Two traveling sinusoidal waves are described by the wave functions

Y1 : 4.95sin[π(3.80x-1180t)]

Y2 : 4.95sin[π(3.80x-1180t-0.250)]

Where x , y1 and y2 are in meters and t is in seconds. Find the wave function of the resultant wave (Y1 + Y2)." --

Answer:

b

Explanation:

Answer:

Which of these can help determine air pressure? Select the two correct answers.(1 point)

a. wind speed of the air

b. moisture in the air

c. temperature of the air

d. cloud patterns in the air

Explanation:

hope this helps :)

Wind speed of the air and temperature of the air are the two correct options that can can help to determine air pressure.

(options a and c)

This is so because the number of molecules above a surface determines air pressure. Interestingly, as the number of molecules increases, they exert more pressure on a surface, and the total atmospheric pressure increases. By contrast, if the number of molecules decreases, so too does the air pressure.

Recall: The temperature of the gas is proportional to the average kinetic energy of its molecules. Faster moving particles will collide with the container walls more frequently and with greater force.

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Answer:

Fluorine is the most reactive

Explanation:

Among the halogens, fluorine, chlorine, bromine, and iodine, fluorine is the most reactive one. It forms compounds with all other elements except the noble gases helium (He), neon (Ne) and argon (Ar), whereas stable compounds with krypton (Kr) and xenon (Xe) are formed.

The particles which must fuse or stick together in the nuclei of atoms during nuclear reactions in stars are atoms of hydrogen.

During a nuclear fusion reaction that occurs in stars, the nuclei of two atoms will combine to form a new atom with a release of energy.

This nuclear reaction usually occur in the core of a star, and the particles involved include the following;

The reaction equation can be represented as;

\(H \ + \ H \ --> He + \ energy\)

Thus, we can conclude that, the particles which must fuse or stick together in the nuclei of atoms during nuclear reactions in stars are atoms of hydrogen.

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The equivalent ratio in higher terms to eliminate decimals from the ratio 3.04 to 6 is 76 to 150.

To eliminate decimals from the ratio 3.04 to 6, we can multiply both terms of the ratio by a common factor that will result in whole numbers.

First, let's convert 3.04 to a fraction:

3.04 = 3 + 0.04 = 3 + 4/100 = 3 + 1/25 = 75/25 + 4/100 = 76/25

Now, the ratio 3.04 to 6 can be written as:

3.04/6 = 76/25 / 6

To eliminate the decimal, we can multiply both the numerator and denominator by 25:

(76/25) * 25 / (6 * 25) = 76 / 150

Therefore, the equivalent ratio in higher terms to eliminate decimals from the ratio 3.04 to 6 is 76 to 150.

By multiplying both terms by 25, we effectively scale up the ratio to eliminate the decimal and create whole numbers. This allows us to express the ratio in higher terms without decimals. The final ratio 76 to 150 represents the same relationship as the original ratio 3.04 to 6, but in whole number form.

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Answer:

A. the motion of an object along a curved path

Answer:

From the initial height h

Explanation:

When a material or substance is drop from a height h, it possesses potential energy, immediately it is dropped from that height, the potential energy is gradually converted to kinetic energy, it gets to a point where the potential energy equals the kinetic energy, as the material touches the ground, all potential energy has been converted to kinetic energy already

Answer:

3 hours

Explanation:

180 divided by 60 (mph means miles per hours by the way)

Answer: No, only green plants can.

Explanation:

Non-green plants cannot make their own food because they do not have chlorophyll in their leaves which breaks down carbon dioxide and water molecules thus do not produce glucose(food).

Answer:

All plants make their own food with exception of the saprophytic plants.

Explanation:

Saprophytic plants for example fungi and moulds feed on dead decaying matter.

Non-green plants cannot make their own food because they do not have chlorophyll in their leaves which breaks down carbon dioxide and water molecules thus do not produce glucose(food).

hope this helps

Answer:

50

Explanation: