4. a 5.4 kg basketball approaches sally with a velocity of 6.5 m/s. sally bumps the ball, giving it a speed
of 7.7 m/s but in the opposite direction. what average force did she apply if the interaction time
between her hands and the ball was 0.15 seconds?

Starch and are common polysaccharide carbohydrates found in plants. sucrose glycogen fructose cellulose

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.