Question 3 A 75 kg block is pulled by a rope at a constant speed over a rough floor for 4 meters. The force of tension
is 8 Newtons. How much energy is disspated by friction?

With i really need the correct answer!

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

The table below shows the acceleration of gravity on different bodies in the solar system. on which body would a 10 kg lamp has the most gravitational potential energy when lifted to a height of 2 m? a. earth b. mars c. neptune d. uranus