The initial mass of a radioisotope is 10.0 g. If the radioisotope has a half life of 2.75 years, how much remains after four half lives?

Two technicians are discussing how a clutch disengages. Technician A says a gap on each side of the clutch disk facing when disengaged. Technician B says the marcel/cushion plage in the disc will flatten. Who is Correct?

In what type of circuit will the equivalent resistance be less than the resistors in the circuit?

A trumpet player is playing a musical note. A boy is running at a constant velocity toward the trumpet player, then stops quickly when he is 2.0 meters away.

Compare the Carboniferous period to the Devonian period.

If magnetism was in a crossword puzzle, what would the question be?

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.

Does the sun fuse hydrogen into helium or vice versa?