Calculate potential energy of a 5 kg object sitting on 3 meter ledge

The Geocentric Model was what scientists agreed upon for thousands of years. What happened to cause the accepted model to become the Heliocentric Model?

A person pushes a box from left to right and then lets the box slide freely across the floor. The box slows down as it slides across the floor. When the box is sliding freely, what is the direction of the net external force? Why?

Given a die, would it be more likely to get a single 6 in six rolls, at least two 6s in twelve rolls, or at least one-hundred 6s in six-hundred rolls?

The sun, sol, is a g-class main sequence star. what is the approximate temperature of the sun's surface

Abdul is pushing his 20. kg little brother on a merry go round with a radius of 2.0m. If his little brother is on the edge of the merry go round and has a angular momentum of 360 kg m^2sec. what is his speed?

A room is being accelerated through space at 7 m/s2 relative to the "fixed stars." it is far away from any massive objects. if a man weighs 500 n when he is at rest on earth, how much will he weigh in the room?

About what is Rigel's surface temperature?

A 75.2 kg ice skater, moving at 7.7 m/s, crashes into a stationary skater of equal mass. After the collision, the two skaters move as a unit at 3.85 m/s. Suppose the average force a skater can experience without breaking a bone is 4824 N.

Amy counts the wave crests traveling down a stretched string. Five wave crests pass Amy in two seconds. What is the frequency of the wave? A. 5.0 Hz B. 2.5 Hz C. 10 Hz D. 2.0 Hz

How does the statement " silence is golden " relate to ethics in communicating at the workplace.?