What force must the people overcome in order to lift the rock? (rock on one end and two guys on the other end)

Two electric charges are moved so that they are twice as far apart as they had originally been. Is the force they experience from each other now half the original force? Explain.

You swing a 2.2 kg stone in a circle with radius 75 cm. At what speed do you need to swing it so its centripetal acceleration will be 9.8 m/s? 2.7 m/s 8.6 m/s 27.1 m/s 7.35 m/s

What is the number of protons in the nucleus of an element called?

1. What are some of the characteristics scientists are looking for when they search for other Earth-like planets? 2. What technology are scientists using to search for other planets? How are they using this technology to identify other planets?

Desde lo alto de un acantilado de 140 m, se lanza verticalmente un objeto hacia abajo con velocidad de 3m/s. Entonces la magnitud del desplazamiento que ejecuta en t = 3s es: (use g = 10 m/s2)

Marcia ran at a speed of 3.50 meters per second. How fast was she running in kilometers per hour?

What is the gravitational force related to the distance between two objects?

How does a rilling can work

The energy content of a certain food is to be determined in a bomb calorimeter that contains 3 kg of water by burning a 2-g sample of it in the presence of 100 g of air in the reaction chamber. If the water temperature rises by 3.

If one side of switch is open and another one closed so what gone happen