Select the correct answer.

Which quantity is a scalar quantity?

A.

acceleration

OB.

area

displacement

D.

force

velocity

Which of these changes do not involve forming or breaking chemical bonds? A) burning and melting B) rusting and cutting C) burning and digestion D) boiling and melting

Which of the following elements posses the fewest valence electrons?

The earth exerts a gravitational force of 3.5n on an object. What is the mass of the object in kg?

The moment of inertia of a body is 3.0 kg x m^2. when its angular velocity is 6.0 rad/s, its rotational kinetic energy in j is

Two capacitors are identical, except that one is empty and the other is fi lled with a dielectric (k 5 4.50). The empty capacitor is connected to a 12.0-V battery.

A charged particle moves at 2.5 * 104 m/s at an angle of 25° to a magnetic field that has a field strength of 8.1 * 10-2 T. If the magnetic force is 7.5 * 10-2 N, what is the magnitude of the charge?

Earthquakes along the subduction zones near Sumatra and Chile are some of the strongest in the world.

What number is between 2000 and 2500

If a car changes its velocity from 32 km/hr to 54 km/hr in 8.0 seconds, what is its acceleration?

Explain why meteorologists compare new weather maps and weather maps that are 24 hours old