If an exit sign is hanging from the ceiling by three chains each of which has a tension of 15N what is the weight of the sign

What happens to the mass of the substance when undergoing a physical change

You pull down on a rope to raise a flag on a flag pole which describes why the rope and the flag pole act as a machine A-they change the direction of the forces B-they increase the distance over which the force acts C - they decrease the distance

A gas is compressed from an initial volume of 5.55 L to a final volume of 1.22 L by an external pressure of 1.00 atm. During the compression, the gas releases 124 J of heat. What is the change in the internal energy of the gas?

If the forces are equal and opposite why does the rocket ship move

In the great shopping cart race, two students push on shopping carts. A having twice the mass of B, with the same force applied over the same distance. Which shopping cart has more KE by the time it gets to the end of the course? A. cart A B.

What's the difference between solids and liquids?

Which type of reaction will for a chemical bonded combination

What kind of change is salt dissolving in water

Which of these is the most effective way for manny to cool down after kickboxing? start static stretches to increase his flexibility walk around to lower his heart rate sit and catch his breath to avoid light-headedness run one to three miles to

One of the driving forces of plate motion is: A. volcanic eruptions along coastlines B. meteor impacts in the ocean basins C. convection currents in the mantle D. hot liquid magma in the inner core