While wearing rubber-soled shoes, you rub a helium balloon on your sweater. the balloon becomes negative charged. now release the balloon. when the balloon is at the ceiling, you are

Which of the following is the best definition of a base? Bases are substances that donate protons, Bases are substances that accept electrons. Bases are any substances without hydroxide ions. Bases are substances that release hydroxide ions.

An 18-year-old runner can complete a 10.0-km course with an average speed of 4.39 m/s. A 50 - year-old runner can cover the same distance with an average speed of 4.27 m/s.

How is Einstein's equation E = mc^2 used in medicine?

What is the magnitude of the force that lifts a 3-kilogram object straight upwards? A. 3.0 N B. 3.3 N C. 9.8 N D. 29.4 N

If an individual is right-handed, under most circumstances it would be safe to assume that their right arm is stronger and more fatigue resistant, since it is probably used to carry out a majority of daily tasks. a. True b. False

When NASA's Skylab reentered the Earth's atmosphere on July 11, 1979, it broke into a myriad of pieces. One of the largest fragments was a 1770-kg lead-lined film vault, and it landed with an estimated speed of 120 m/s.?

A spring gains 2.34 joules of elastic potential energy as it is compressed 0.250 meter from its equilibrium position. What is the spring constant of this spring? (1) 9.36 N/m (3) 37.4 N/m (2) 18.7 N/m (4) 74.9 N/m

Form hypothesis: Where do you think we humans get energy?

The distance from home plate to the pitchers mound is 18.5 meters. For a pitcher capable of throwing at 3.85m/s (86mi/hr), how much time elapses between the release of the ball and the ball passing home plate?

A squirrel sitting on the ground starts to run with an acceleration of 5.1 m/s 2. How fast is the squirrel going after 0.25 seconds? A. 20.4 m/s B. 1.28 m/s C. 0.49 m/s D. 3.1 m/s