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.

... ?

The suspension system mounts the car's wheels solid on the frame. True or false?

A surface recieving sound is moved from it original position to a position three times farther away from the source of the sound. The intensity of the recieved sound thus becomes

Choose all the ways that charged can be transferred.

Inductors in series. Two inductors L1 = 1.05 H and L2 = 2.07 H are connected in series and are separated by a large distance so that the magnetic field of one cannot affect the other. (a) Calculate the equivalent inductance.

What is the term for the force exerted on an object by another object? A: action force B: collision force C: net force D: reaction force

A conductor, with outer surface labelled a, contains a cavity, inner surface b. In this cavity there is a conducting sphere of radius r, and surface c. The sphere carries a charge of 1 C, while the conductor a charge of 2 C.

A spring (k = 790 N/m) has a length of 48 cm when zero net force is applied to it. What will its length be when 230 N of force is applied to stretch it? Question 3 options: 3.4 m 0.77 m 3.9 m 0.29 m

Inert gas used to make bright city lights True or False

A boulder on top of a cliff has a potential energy of 12400J. How high above is the boulder?

If the graph represents speed what is measured on the x and y axes