If the solid form of most molecules is heavier than the liquid form, why does ice float

What particle moves around the nucleus and has a negative charge?

What is the relationship between frequency and energy?

Which of the following are vector quantities? check all that apply. a. time b. displacement c. force d. mass

A 100 N force Gad a soccer ball flying through the air at 20m/s^2 What is the mass of the soccer ball

What happens to light as it moves at an angle from a medium that has an index of refraction of 1.5 into a medium that has an index of refraction of 1.33? A. It slows down, and the angle increases. B. It speeds up, and the angle decreases. C.

Which of these would you include ina free body diagram for a bicycle-plus-rider taken together as the bicycle is being pedaled up the hill?

What are two possible uses of genetic engineering

How many joules are expended by a 70 kg man climbing up 6m of stairway? How much work is done if the climbing takes place on the surface of the moon? (Assume that the acceleration due to gravity on the moon's surface is 1.6 m/s2

A baseball flying through the air has kinetic energy because of its motion. true or false?

How many poles does Jupiter's magnetosphere have? a. 2 c. 8 b. 4 d. 9