How much work is done when a 48-kg stack of books are lifted 2m with a net force of 25 N?

A. 12.4 J

B. 100 J

C. 50 J

D. 96 J ... ?

A ball of mass 0.152 kg is dropped from a height 2.27 m above the ground. The acceleration of gravity is 9.8 m/s 2. Neglecting air resistance, determine the speed of the ball when it is at a height 0.903 m above the ground. Answer in units of m/s.

Why is it safe to stick your tongue on a wooden pole on a cold winter day, but not on a metal pole?

An isolated box with volume V is initially split into two halves by a partition. One side has gas at temperature T with pressure P and number of molecules N, and the other side has nothing (it is a void).

Select the correct answer from each drop-down menu. All sound waves move at nearly the same speed through the air. High-frequency sound waves have a shorter and a higher than low-frequency sound waves. Reset Next

Velocity is described by __ and time

In which phenomenon does Earth's magnetic field play an important part? A retaining gases around Earth to form the atmosphere B. stratifying the atmosphere into layers c. movements of tectonic plates D. spreading of the sea floor E.

Make sure that you spend extra time warming up during - O O A. spring B. cold weather O c. the afternoon O D. a heat wave

Which of these forces could speed up a baseball? A) Applied and Frictional forces B) Applied and Gravitational forces C) Frictional and Gravitational forces

When you are travelling downhill on a roller coaster, you experience a light feeling in your stomach. why?

Sound waves transport: a. only matter b. only energy c. both matter and energy d. matter when passing through a medium and energy passing through vaccum