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olga55 [171]
3 years ago
10

Which object experiences the greatest gravitational force? A)car B)fire truck C)plane D)human

Physics
1 answer:
Svetlanka [38]3 years ago
3 0

Answer: C Plane

Explanation: According to Newton's law, gravitational force is proportional to the product of masses and inversely proportional to the square of distance between them.

Gravitational force depends on mass. The bigger the mass, the more the magnitude of the gravitational force. Since plane is assume to have the highest mass in the options, we can therefore conclude that plane will experience the highest gravitational force.

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A driver pushes on a car with a force of 8000 N for 15 seconds but is unable to move it. How much work is done
quester [9]

Answer:

the work done is zero.

Explanation:

Given;

applied force, F = 8000 N

time of force application, t = 15 s

Work done is given as the product of force and displacement. Since the car is unable to move, then the displacement is zero and the work done is zero.

Work done = Force x displacement

Work done = 8000 N x 0

Work done = 0

Therefore, the work done is zero.

5 0
3 years ago
What is de Broglie's hypothesis ? Make sure to be specific (qualitative and quantitative)
victus00 [196]

Answer and Explanation:

DE BROGLIE 'S HYPOTHESIS :

  • According to De broglie the matter have dual nature it can behave as particle as well as wave
  • According to this hypothesis all matter have wave like property and having wavelength.
  • The de broglie wavelength is given by \lambda =\frac{h}{P} here h is plank's constant and P is momentum
  • This hypothesis determines the probability of finding the object at a give point

3 0
3 years ago
It takes 6 seconds for a stone to fall to the bottom of a mine shaft. how deep is the shaft
Margaret [11]
You need the kinematic equation for distance as a function of acceleration:

d = [v(initial) *t] + 0.5a*t^{2}

where a = gravitational acceleration 9.8m/s^{2}
v(initial) = starting velocity
t = time of fall

if the stone started at rest then v(initial) = 0 making the equation simply 0.5a * t^{2}

Let me know if you still need further help :)
6 0
3 years ago
A college student likes to take her books to class by placing them in a box and pulling the box around behind her. She pulls on
just olya [345]

Answer:

It would result an a negatice answer.

Explanation:

The accelarion should be pulled as a kite not a box :) columbus said that musical stuff no just no

Hope this helps!!

       - Katty queen

             

8 0
3 years ago
What makes comets different from asteroids and meteoroids? Question 8 options: A.They don't consist of ice. B.They travel in spa
Rus_ich [418]

Answer:

(C) They consist of ice.

Explanation:

Comet consist of a body of ice, rock and dust that can be several miles in diameter and orbits the sun. Debris from comets is the main source of many meteoroids.

8 0
3 years ago
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