A train travels 53 kilometers in 1 hours and then 81 kilometers in 3 hours what is its average speed?

H2SO4 + NaOH > Na2SO4 + H2O. Balance this reaction if necessary. A) balanced B) 1,2,1,2 C) 1,2,1,4 D) 1,2,2,2

One way that consumers can encourage the efficient use of energy by industries is to prevent boycotts of products produced by companies that are inefficient or wasteful in their energy use. Question 10 options: a) True b) False

What is a time paradox?

The height of a wave from the equilibrium is 1 meter. Which parameter of the wave does this distance represent

When the wick is lit, the kerosene in the wick undergoes a chemical reaction with oxygen in the air to release energy in the form of light. Which change to the device would increase the amount of time the lantern provides light?

Compare the Lagrangian method with the Newton-Euler method in detail.

A plane is flying east at 135 m/s. The wind accelerates it at 2.18 m/s^2 directly northeast. After 18.0s, what is the magnitude of the displacement of the plane?

The same constant force, F, is applied to two blocks. The first block has a mass of M and the second block has a mass of 2M. Both blocks are initially at rest and the force acts on each of them for the same period of time, t.

Which of the following is an example of the strong nuclear force acting in an atom? A. A proton repelling a proton B. A neutron attracting a neutron C. A neutron repelling an electron D. An electron attracting a proton

Does the air in our atmosphere have mass?