A train travel 82 kilometers in 2 hours and then 62 kilometers in 3 hours. What is its average speed?

How do I write scientific notation for a number less than 1?

Anjuli is looking at four different metal samples on the counter. Three are solid, and one is a liquid. Which statement about the liquid metal is most likely true? The liquid metal is gold. The liquid metal is mercury.

What type of energy increases when friction does work on an object

If the 15.0 cm string is shorter than the 30.0 cm string. The frequency of the 15.0 cm string is how many times higher than the frequency of the 30.0 cm string? If the 15.0 cm string is shorter than the 30.

When a high-mass star explodes, which of the following is left over in the center? A. Black hole B. Neutron star C. White Dwarf D. either a or b

What is a relatively small rocky body that travels through out space

Which is true about the pressure of a fluid at a specific depth? It varies with the total volume of the fluid. It depends only on the type of fluid. It is exerted only in the downward direction. It depends on the surface area of the fluid.

The sum of potential and kinetic energies in the particles of a substance is called energy. True or False

Element X has a mass number of 40 and an atomic number of 20, and element Y has a mass number of 56 and an atomic number of 26. Element X has more neutrons and fewer electrons than element Y. more neutrons and electrons than element Y.

How does mass affect average speed?