What is the source of the material that now makes up the sun and the rest of the solar system?

What would the velocity of a bullet that strikes a tin can 350 meters away in 0.25 seconds

why is it important for digestive system functions that mucous membranes can secrete and absorb susbstances?

Which one of the following statements concerning superconductors is false? A constant current can be maintained in a superconducting ring for several years without an emf. Superconductors are perfect conductors.

Suppose that two objects attract each other with a gravitational force of 32 Newtons. If the distance between the two objects is doubled, what is the force of attraction between them? 8N 16 N 32 N 64 N

E. A pyramid has a square base. Its volume is 48 cubic centimeters and its height is 4 centimeters. What is the length of one side of the base? A. 2 cm B. 6 cm C. 12 cm D. 144 cm

A teacher wants to demonstrate that unheated water can boil at room temperature in a beaker within a bell jar connected to a vac-uum pump. However, the vacuum pump is faulty and can reduce pressures only to 15 kPa.

How many btus of heat energy are needed to raise the temperature of 99.6 lbs of water from 50 °f to 130 °f?

What is a different form of a characteristic, such as brown hair, is called

A book falls of the table and hits the floor. Is work done? Why?

A person of 83 kg is in an elevator. If the elevator is moving at a speed of 5 m/s, what's the person's kinetic energy? Keep 4 significant figures a 1,004 J b 1,038 c 1,280 J d 980 J e 1,435 J