A 30 kg child is in an elevator accelerating down at a rate of -5 m/s2.
a. Calculate the force of gravity on the child.

According to Newton's laws, the net force on a satellite in an elliptical orbit is given by the following formula:

\(F = (GMm) / r^2\)

where F is the net force, G is the gravitational constant, M is the mass of the central body (e.g., Earth), m is the mass of the satellite, and r is the distance between the center of the central body and the satellite.

To determine the location of the satellite at any given point in time, we need to know its position and velocity. The motion of the satellite can be described by Kepler's laws of planetary motion, which state that the orbit of a planet (or satellite) is an ellipse with the central body at one of the foci.

Given the position and velocity of the satellite at one point in time, we can use numerical methods (such as Euler's method or the Runge-Kutta method) to calculate its position and velocity at any subsequent point in time. These methods involve calculating the net force on the satellite at each point in time and using it to update the satellite's position and velocity.

Learn more about gravitational constant here:

https://brainly.com/question/858421

#SPJ11

I hope this helps

The picture shows the correct answer

Answer:

168

Explanation:

56 x 3

have a nice day

Kepler's laws of planetary motion are based on detailed observations made by the astronomer Tycho Brahe.

Kepler's laws of planetary motion are based on detailed observations made by the astronomer Johannes Kepler himself. Johannes Kepler was a German mathematician, astronomer, and astrologer who lived from 1571 to 1630. He made significant contributions to the field of astronomy and is best known for his three laws of planetary motion, which he derived based on meticulous observations made by his predecessor Tycho Brahe.

Kepler's laws describe the motion of planets around the Sun and revolutionized our understanding of the solar system. His observations, combined with his mathematical calculations and analysis, led to the formulation of these laws, which are fundamental principles in the field of astronomy and planetary science. Kepler's laws provide valuable insights into the nature and mechanics of planetary orbits, and they laid the foundation for later developments in celestial mechanics and the study of gravitational forces.

learn more about "Kepler's laws":- https://brainly.com/question/25900771

#SPJ11

In the case of falling, the time will double then the height will increase  by a factor of 4 times.

In this problem, we are dealing with free-falling and distance, where distance is The physical quantity that can be defined by how the object or body is seen far away, whereas displacement and  Distance both are different physical meanings but have the same standard units and whereas a free falling object is an object that's falling beneath the sole impact of gravity. Any object that's being acted upon as it were by the force of gravity is said to be in a state of free fall.

Since we are given that the falling time is doubled,  since  the formula for the distance by the equation of motion is

s=1/2gt²

where g is the acceleration due to gravity and t  is the time, so if the time is increased by 2 times, then the distance increase by the value of 4 times as distance is  directly proportional to the square of the falling time.

To know more about free falling refer to the link https://brainly.com/question/13299152?referrer=searchResults.

#SPJ1

Answer:

The Northern flowing stream will affect the coast of Europe by  making  climate of Western Europe and Northern Europe to be warmer than other areas that are located around the same latitude and this is simply because of the North Atlantic Current

Explanation:

The Northern flowing stream will affect the coast of Europe because the North Atlantic current causes the Gulf stream to be split into two ( 2 ) and the Northern stream which is a warm stream crossing over to Northern Europe. The Gulf stream makes climate of Western Europe and Northern Europe to be warmer than other areas that are located around the same latitude and this is simply because of the North Atlantic Current

Answer:

The Sun derives all its energy from a fusion cycle. In that process, tiny hydrogen molecules combine into a continuous proton-proton chain to create larger helium nuclei. The above figure illustrates the fusion of hydrogen into helium.

Explanation:

Hope this helps.

Answer:

nuclear fusion

Explanation:

In this process, small hydrogen molecules fuse together to form bigger helium nuclei in a continuous proton-proton chain.

Answer:

hi your answer to this question is 220'

Explanation:

hope this helped you

Answer:

Constructive interference.

Step-by-step explanation:

Constructive interference occurs when the maxima of two waves add together so that the amplitude of the resulting wave is equal to the sum of the individual amplitudes.

Answer:

Without seeing the image of the air mass, it is difficult to determine the exact type of air mass that is moving south from Canada into the United States. However, based on the general principles of air masses, we can make an educated guess.

In general, when a cold air mass moves into an area, it is likely to be a continental polar (cP) air mass. A continental polar air mass is characterized by cold and dry air that forms over land in high latitudes. It is typically stable and brings clear skies and cold temperatures.

So, it is possible that a continental polar air mass is moving south from Canada into the United States. However, other types of air masses could also be involved, depending on the specific weather patterns and atmospheric conditions in the region.

Explanation:

please follow me for more if you need any help

Answer:

6

Explanation:

From the given question, since a total of 12 V was obtained from the battery which is made up of a number of cells with each producing 2.0 V.

Assuming that the cells have a very low internal resistance, then;

minimum number of electric cells in the car battery = \(\frac{total voltage from the cells}{individual voltage of the cells}\)

                                          = \(\frac{12}{2}\)

                                          = 6

Thus, the minimum number of electric cells in the car battery is 6.

This implies that the addition of 6 cells which has 2.0 V supply in the battery produces a total of 12 V. Provided that the cells have a very low internal resistance.

Answer:

Joule

Explanation:

As any unit of energy (kinetic, potential, etc.), the gravitational potential energy has SI units of Joule. This s the work done by a force of 1 Newton to displace an object 1 meter in the direction of application of the force.

Answer:

Net force is always m•a. In this case, the velocity is constant so the acceleration is zero and the net force is zero.

Explanation:

The correct option for the given question is a) The average speed decreases.

Here is why.

As per the kinetic molecular theory, temperature is directly proportional to the average kinetic energy of the atoms. In other words, if temperature increases, then the average kinetic energy of the atoms will also increase. On the other hand, if the temperature decreases, then the average kinetic energy of the atoms will also decrease.In the given diagram 3, the initial volume of the container is V. At this stage, the atoms have a certain average kinetic energy which translates to a certain average speed. Now, when the volume of the container is reduced to V2, the same amount of gas is now confined in a smaller volume than before. Due to this confinement, the collisions between the atoms of the gas will be more frequent. As a result, the time between successive collisions decreases. This will reduce the average speed of the Xe atoms as the Xe atoms will collide more frequently and the collisions will last for shorter times.Based on the above explanation, we can say that the average speed of the Xe atoms in the container in diagram 3 will decrease as the original volume V is reduced to V2 at a constant temperature. Hence, option a) is the correct answer.

to know more about kinetic molecular theory visit:

https://brainly.com/question/30655544

#SPJ11

Given

7 km north

5 km east

Procedure

The displacement is simply the difference in the position of the two marks and is independent of the path taken when traveling between the two marks.

Answer:

110 mL

Explanation:

Ideal gas law:

PV = nRT

Assuming the container isn't rigid, and the pressure is constant, then:

V/T = V/T

Plug in values (remember to use absolute temperature).

V / 293 K = 150 mL / 393 K

V = 110 mL

The ball which is thrown with a speed of 21 m/s, travels a distance of 129.99 m in the horizontal direction.

Therefore, the vertical component of the ball's motion will be determined by the force of gravity and the initial vertical speed of the balloon.

We can use the following kinematic equation to determine how long it takes for the ball to fall to the ground:

h = ut + 1/2 * g * t^2

where h is the initial height of the ball (equal to the height of the balloon which is 210 m).

u is the initial velocity of the ball in the vertical direction which is 3.5 m/s.

g is the acceleration due to gravity (approximately 9.8 m/s^2),

and t is the time it takes for the ball to fall to the ground.

Plugging in the values we know, we get:

210 = 3.5 * t + 1/2 * 9.8 * t^2

4.9 t^2 + 3.5 t - 210 = 0

t = 6.19 seconds

Now we can use the time it takes for the ball to fall to the ground to determine how far it travels horizontally, given its initial horizontal velocity of 21 m/s. We can use the following equation:

d = v * t

where d is the horizontal distance traveled by the ball, v is its initial horizontal velocity, and t is the time it takes to fall to the ground (which we just calculated).

Plugging in the values we know, we get:

d = 21 * 6.19

d ≈ 129.99 meters

Therefore, the girl will find the ball approximately at a distance of 129.99 meters away from her when she lands after throwing the ball horizontally.

Learn more about the kinematic equation:

https://brainly.com/question/28712225

#SPJ11

Answer:

Inclined plane = 2. Something that can hold things together or lift an object. Wedge = 3.

Explanation:

Screw is simple machine which is used to hold to objects together

mark brainliest

Answer:

The resistance of the tungsten coil at 80 degrees Celsius is 15.12 ohm

Explanation:

The given parameters are;

The resistance of the tungsten coil at 15 degrees Celsius = 12 ohm

The temperature coefficient of resistance of tungsten = 0.004/°C

The resistance of the tungsten coil at 80 degrees Celsius is found using the following relation;

R₂ = R₁·[1 + α·(t₂ - t₁)]

Where;

R₁ = The resistance at the initial  temperature = 12 ohm

R₂ = The resistance of tungsten at the final temperature

t₁ = The initial temperature = 15 degrees Celsius

t₂ = The final temperature = 80 degrees Celsius

α = temperature coefficient of resistance of tungsten = 0.004/°C

Therefore, we have;

R₂ = 12×[1 + 0.004×(80 - 15)] = 15.12 ohm

The resistance of the tungsten coil at 80 degrees Celsius = 15.12 ohm.

Explanation:

df = do + vot  + 1/2 at ^2      do = what you are looking for      df = ground = 0

0 = do + 6 (3 ) + 1/2 ( -9.81) (3^2)

do = 26.1 m

Answer:

Answer to the question is 4 / 5

Answer:

The answer is "a, c and b"

Explanation:

Answer:7.625m/s2

Explanation: M=1525

N=200

F=M*a

200=1525*a

a=1525/200

a=7.625m/s2

Answer:

A device that is used to break an electric circuit is called electric switch

Answer:

a

Explanation:

The pocket of hot air appears to be a pool of water because light refracts at the boundary between the hot and cool air. The answer is C.

When there is a pocket of hot air above a surface, it creates a mirage effect, which makes the surface appear as if it is reflecting a pool of water. This happens due to the bending of light as it passes through air of varying temperatures. Hot air has a lower density than cool air, which causes the light to refract or bend away from its original path as it passes through the boundary between the hot and cool air.

This bending of light causes the image of the ground or distant objects to appear displaced from their actual positions, creating the illusion of a pool of water. The effect is similar to looking at an object through a lens. This phenomenon is called a mirage, and it is a common occurrence in desert regions, where the temperature can vary greatly between the hot sand and the cooler air above it. Option C is correct choice.

To know more about light, here

brainly.com/question/29026084

#SPJ4

Answer:

Weight of the box? 980 N

Value of the normal force? 630 N

Acceleration of the box? 7.5 m/s^2

Explanation:

I got the answer right