A 4.00 kg stone is dropped from a height of 145 m. What is the stone's potential and kinetic energy respectively when it is 50.0 m from the ground?

A - 1,960 J, 5,680 J

B - 5,680 J, 1,960 J

C - 3,720 J, 1,950 J

D - 1,960 J, 3,720 J

A battery with an emf of 1.50 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 1.40 V and the current is 0.17 A. What is the value of the external resistor R?

Object A and B are 10m apart. Which of the following will cause the greatest increase in gravitational force between the objects? A. Increase the mass of object A. B. Increase the mass of object B. C. Increase the distance between objects A and B. D.

How many galaxies exist?

What is the identify atom shown

How does speed relate to the distance covered and the time taken for travel?

A pendulum swings with amplitude. 02 m and period of 2 s what is its maximum speed

What bone cells respond to stress?

What are two ways that convention currents in the ocean distribute the suns energy?

A 535 kg roller coaster car began at rest at the top of a 93.0 m hill. Now it is at the top of the first loop-de-loop. This roller coaster's track is nearly frictionless, so resistance can be ignored. Using g = 9.

A bulldozer does 45,000 joules of work to push a boulder a distance of 30 meters. How much force is applied to push the?