If an athlete executing a long jump leaves the ground at a 30° angle and travels 7.80 m, what was the takeoff speed

All parts of the electromagnetic spectrum share travel at the same speed through empty space. True False

What units are used to express energy?

An aerobatic airplane pilot experiences weightlessness as she passes over the top of a loop-the-loop maneuver. The acceleration of gravity is 9.8 m/s 2. If her speed is 450 m/s at this time, find the radius of the loop. Answer in units of km

Give example of not reversible change ...

What is massand its si unit

Starting at its rightmost position, it takes 2 seconds for the pendulum of a grandfather clock to swing a horizontal distance of 18 inches from right to left and 2 seconds for the pendulum to swing back from left to right.

A question about a moral issue is answered by examining facts rather than opinions. is generally considered a scientific question. cannot be answered with scientific methods. cannot be debated through discussion.

Who is most likely to have a physiological age that is much younger than his or her actual age?

Inflammation happens when the mucous membranes cannot stop a pathogen. True False

If the diameter of the space station is 730 m, how many revolutions per minute are needed for the "artificial gravity" acceleration to be 9.80m/s2?