Why might skin not be able to produce enough vitamin d

Convert 6.95*105 cal to joules. recall that 1 cal=duncan takes a break from studying and goes to the gym to swim laps. if swimming burns 6.

Sound travels at a speed of about 344 m/s in air. You see a distant flash of lighting and hear the thunder arrive 7.6 seconds later. How many miles away was the lighting strike? (assume the light takes essentially no time to reach you.

If there is no gravity what will happen to earth?

Name human body organs where magnetism is significant

Real world trampolines lose energy since they are damped springs with much internal friction. How much energy does the sumo wrestler lose on each bounce in this situation? b) How can a gymnast keep a constant bounce height in a real world trampoline?

Which of the following best illustrates chemical potential energy a dog Plane, gasoline gasoline, water moving down hill, a skydiver about to jump out of a plane

What are two ways to increase the acceleration of an object?

On the moon, all free-fall distance functions are of the form s (t) = 0.81t^2 where t is in seconds and s is in meters. An object is dropped from a height of 200 meters above the moon. After 9 sec, consider parts (a) through (d) below.

Why fan rotates in a clockwise direction and why not in a anti clockwise direction

If the force of gravity increases, which mearsurement will change and how? A.) weight decreases B.) mass increases C.) mass decreases D.) weight increases