What is efficiencywhat is the formula of mechanical advantage and velocity ratio of labour

how much internal energy is generated when a 20.0 g lead bullet, travelling at 7.00*10^2 m/s, comes to a stop as it strikes a metal plate

Which would be the best example to demonstrate the principle of conservation of energy? A) a stone is crushed B) light bends around a sharp edge C) a pendulum swings back and forth D) a balloon inflates when air is blown into it

Explain the force that keep the rock balanced on its tiny pedestal

A car weighs 15,000 N, and its tires are inflated to a pressure of 190 kPa. How large is the area of the car's tires that are in contact with the road?

A person can jump 1.5m on the earth. How high could the person jump on a planet having the twice the mass of the earth and twice the radius of the earth?

In 1940, the Tacoma Narrows Bridge across the Puget Sound collapsed. The bridge was a suspension bridge. The wind blowing through the narrows matched the natural frequency of the bridge.

What has more momentum: a sports car moving at 100 mph or a train that is not moving?

What is your mass in kilograms?

The dimensions of a block that weighs 30 N are 0.23 mx 0.12 mx 0.075 m. What pressure does the brick exert on the ground if it is resting on its largest face?

What is the current in a circuit with a 9.0 V battery and a resistance of 36.0 Ω?