After three half-lives, what fraction of a radioactive sample has decayed

5/6

1/2

7/8

2/3

Consider a string of length 1.0 meter, fixed at both ends, with mass 100 grams and tension 100 newtons. part a give the number of nodes and antinodes set up on the string if it is driven at a frequency of 95 hertz.

A ball is hit straight up with an initial speed of 28 meters per second. What is the speed of the ball 2.2 seconds after it is hit? [Neglect friction.]

Which of the following rocks would most likely be found on the ocean floor? granite basalt marble shale

According to Newton's second law of motion acceleration or an object depends upon the ___ of the object and the ___ Acting on it. I'm confused on what the blanks are. I can't find them.

What best describe a sound wave

What is the difference between a meteorite and a asteroid?

Which of the following best explains why a magnet sticks to a refrigerator? the magnet is

If the truck has a mass of 4,000 kilograms, what is its momentum? Express your answer in kg x m/s

Using diagram differentiate between solenoid and a toroid

If a gas has a gage pressure of 156 kPa, its absolute pressure is approximately