What is the kinetic energy in joules of a 0.05. kg bullet traveling 310 m/s

An isotope decreased to one fourth its original amount in 18 months. What is the half life of this radioactive isotope?

Which radiation has a higher frequency than visible light

When some subatomic particles split from each excess energy is release what kind of energy is this

A falling baseball has an acceleration of magnitude 2.1 m/s2. What is its acceleration in feet per second squared?

What component is brass and copper

A football travels 25 m in 2.5 seconds. What is the speed of the football?

A 25 kg ball is thrown into the air when thrown it's going 10 m/s calculate how high it travels

As part of a circus performance, a man is attempting to throw a dart into an apple which is dropped from an overhead platform. Upon release of the apple, the man has a reflex delay of 215 milliseconds before throwing the dart.

A train travels 90 kilometers in 1 hour, and then 82 kilometers in 5 hours. What is it's average speed?

3. A hydraulic lift is used to jack a 950-kg car 45 cm off the floor. The diameter of the output piston is 23 cm, and the input force is 375 N. a. What is the area of the input piston? (10pts) b.