What happens to the mass of the substance when undergoing a physical change

The density of solid aluminum is 2.70. if a 1g piece of aluminum is dropped in a cup of water, it will. (the density of water is 1.00 g/cm3)

Calculate the speed of a sound wave with a frequency of 440 vibrations per second and a wavelength of 0.78 meters.

As the clump of colored fluid at the bottom of the lava lamp reaches the top, which has increased?

What is the example of indirect competition for resources

How do you determine the difference in time between the arrival of the primary (P) wave and the arrival of the secondary (S) wave during an earthquake?

Charge 1 is - 30 μC, charge 2 is 5 μC, the distance between the charges is 8 cm, and they are located in a vacuum. If the third charge of 3 μC would be placed into position B, i. e.

For water vapor to turn back i to a liquid what do you do to it's temperature

How long will it take a car that is moving at 60 miles per hour to travel 120 miles?

Calculate the force required to give 380kg car an acceleration 10m/s square

A rock is dropped from a sea cliff, and the sound of it striking the ocean is heard 3.2 s later. If the speed of sound is 340 m/s, how high is the cliff?