The index of refraction for flint glass is 1.5. This means that

Which of the following tools should a scientist use to measure an object in milligrams? a. Electronic balance b. Pan balance. c. Tape measure d. Thermometer

Assume that a coffee maker, a vacuum cleaner, a toaster, and an electric drill were all used for one hour. Which uses the most energy in that time?

Two oppositely charged particles are attracted to each other with a force of 2.7 newtons. What the new force be if only one of the charges is doubled?

What will be the weight (acceleration due to gravity on the moon is 1/6 that of the earth

How number of batteries affects bulb brightness?

If a car drove 121km/hr on average how far did it travel in 116min?

A 10 kg farm wagon is sitting at the top of a hill that makes a 370 angle with the horizontal when the brake suddenly fails. The cart rolls down the hill for 50 m and then hits a haystack. It plows 2.0 m into the stack before coming to rest.

What is a Geographic test

What is the velocity of a beam of electrons that go undeflected when passing through crossed (perpendicular) electric and magnetic fields of magnitude 1.63*104V/m and 2.50*10-3T, respectively? me=9.11*10-31kg, e=1.60*10-19C.

Gravity pulls gases and dust particles in space toward one another, squeezing them into a smaller and smaller space. The temperature at the center rises high enough for fusion of hydrogen to begin.