Why is zinc chloride a substance and not a mixture

A 52 N sled is pulled across a cement sidewalk at constant speed. A horizontal force of 36 N is exerted. What is the coefficient of sliding friction between the sidewalk and the metal runners of the sled? Select one: A. 0.69 B. 16 C. 1872 D. 1.44

If i measure the parallax of a star to be 0.125 arc seconds, what is its distance in parsecs?

A man stands on a cliff that 10m above the sea. He throws a stone vertically upwards with velocity 5ms^-1.

The strong nuclear force holds together which two particles in an atom?

Why aren't organisms on the sea floor crushed by water pressure

Larry's gravitational potential energy is 1870Jas he sits 2.20 m above the ground in a sky diving airplane. What is Larry's gravitational potential energy when he begins tojump from the airplane at an altitude of 923m?

Which travels faster in helium, copper or lemonade?

In order for a boat to float, its weight must have a magnitude equal to the

Define the wavelength and frequency of a wave and explain how they are related.

An unstretched spring has a length of 10. centimeters. When the spring is stretched by a force of 16 newtons, its length is increased to 18 centimeters. What is the spring constant of this spring? A) 2.0 N/cm B) 1.6 N/cm C) 0.89 N/cm D) 1.8 N/m