It takes 25 J of work to pull a 5.0 N object 4.0 m along the floor at constant speed. How much work is done to overcome friction? a. 25 J b. 20 J c. 5.0 J d. 1.3 J

What are the factors that affect the resistance of a wire?

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.

He latent heat of vaporization for ethyl alcohol is 854 j/g. the amount of energy, rounded to the nearest whole number, needed to change 5.20 grams of ethyl alcohol from a liquid to a gas is