Classify which of the following is a substance: tablero salt, seawater or sand? Explain how you know.

At what temperature will water change from solid to a liquid? At what temperature will water change from liquid to a gas?

A basketball player can leap upward 0.42 m. What is the magnitude of his initial velocity at the start of the leap? Use g=9.81 m/s2.

Two identical rifles are shot at the same time, and the sound intensity level is 64.7 dB. What would be the sound intensity level if only one rifle were shot

The law of conservation of momentum states that a. the total initial momentum of all objects interacting with one another usually equals the total final momentum. b.

A motorcycle is travelling north at 11m/s. How much time would it take for the motorcycle to increase its velocity to 26m/s (N) if it accelerated at 3.0m/s2?

In the virtual lab, calculations were made of the predicted diffraction angle, using the formula θ ≈ StartFraction lambda over L EndFraction.

What trends were seen in Mendeleev's periodic table?

Through which medium would EM waves travel the fastest? A. The Ocean B. The Atmosphere C. Rocks

Average mass of a toy car (small, hot wheels) ?

A cannon directed straight upward launches a ball with an initial speed v. The ball reaches a maximum height h in a time t. Then, the same cannon is used to launch a second ball straight upward at a speed 2v.