If a rock has a density of 2g/cm³ and a volume of 8cm³, what is its mass?

A. 4 g

B. 128 g

C. 16 g

D. 0.25 g

How many fire extinguishers must be carried onboard power boats, with installed fuel tanks, between 26 and 40 feet in length?

When a tuning fork vibrates over an open pipe and the air in the pipe starts to vibrate, the vibrations in the tube are caused by

When a certain wire is connected across a voltage of 1 v, the resulting current through the wire is 1 a. if we connect the same wire across a voltage of 2 v, the current will be?

Kevin is standing outside a railway station. He can know whether a train is approaching the station or departing from the sound it makes. Which principle of sound waves is he using?

Assignment 10 Coulombic Equation Practice Directions: Complete the following problems to calculate the electrostatic force that is present in each situation. You will need to be sure to correctly substitute each of the variables in the equation.

Which statement is true about the atom? A: it contains positive electrons, uncharged protons and negative protons. B: it contains uncharged neutrons, positive electrons and negative protons.

Steel objects can become temporary magnets because they are mainly composed of which element?

How long does it takes the sun to rotate the earth?

Which explains how winds move?

Why is it important to develop alternative energy sources