Fine grains of beach sand are assumed to be

spheres of radius 38.9 µm. These grains are

made of silicon dioxide which has a density of

2600 kg/m3

.

What is the mass of each grain of sand?

Answer in units of kg.

... ?

A 2,000 kg car is moving at 15m/s when it collides with a 1200kg car sitting still. Briefly compare the impulse imparted on the 1200kg car by the 2000 kg car to the impulse on the 2000 kg car by the 1200 kg car which car under goes the greater

What an object at rest stays at rest and an object in motion with the same speed and in the same direction unless acted upon by an unbalanced force is newton's 1st law of motion? True Or False

Nicolaus Copernicus was considered: a heretic because his theory disagreed with the church a hero because his theory agreed with current beliefs the "Father of Astronomy" because he believed the earth was the center of the solar system

Suppose that a wave has a period of 0.03 second. What's its frequency?

An electric current through a wire is 6.00 C every 2.00 s. What is the magnitude of this current?

What describes the movement of a fluid during convection?

Inductors in parallel. Two inductors L1 = 1.31 H and L2 = 2.24 H are connected in parallel and separated by a large distance so that the magnetic field of one cannot affect the other. (a) Calculate the equivalent inductance.

The amplitude of an oscillator decreases to 36.7% of its initial value in 29.5 s. part a what is the value of the time constant

Which is a derived unit? A Meter B Second C Kilogram D Newton

What is the period of vibration for a wave with a frequency of 150 hertz?