Which oftthe following is the least reliable source of background information for a scientific project? General internet site, government internet site, library reserve section, or scientific journal.

When mars is on the opposite side of the sun from earth, it is about 4.0*108km away. how long does it take a radio signal traveling at the speed of light, c=3.

Describes how a simple machine can make work easier?

A magnesium (Mg) atom has 2 valence electrons. Which of the following would be the most likely way for a magnesium atom to become stable? O A. Lose 2 electrons O B. Lose 1 electron O C. Gain 6 electrons O D. Gain 1 electron

A grindstone of radius 4.0 m is initially spinning with an angular speed of 8.0 rad/s. The angular speed is then increased to 12 rad/s over the next 4.0 seconds. Assume that the angular acceleration is constant.

What mechanism is most responsible for generating the internal heat of Io that drives its volcanic activity?

4. The place on a magnet where the magnet exerts the strongest magnetic force is the magnetic A. pole. B. force. C. domain.

A motorcycle is capable of accelerating at 5.1 m/s2. Starting from rest, how far can it travel in 1.5 seconds? A. 3.8 m B. 4.5 m C. 3.2 m D. 5.7 m

If a car goes along a straight road heading east and speeds up from 45 ft/s to 60. ft/s in 5 sec, calculate the acceleration

An element in period 4 would have how many electron shells

Olivia wants to find out whether a substance will fluoresce. She says she should put it in a microwave oven. Do you agree with her? Why or why not?