Can you please solve these questions. I need the correct answer If a body is in
ID: 1307030 • Letter: C
Question
Can you please solve these questions. I need the correct answer
If a body is in static equilibrium, the sum of torques must be zero about every point about which the object is actually rotating The integral of x2 from x = 0 to x = 4 is 64/3 As of December, 1996, the Earth contained an estimated 1 times 10 22 joules of energy in all of its petroleum reserves. Using the rate of world consumption (4.3 times 1012 Joules per second), how a) about 73 years b) about 2.3 billion years Gymnasts change their rotational inertia often while in midair - while not touching anything You are in a space ship and fire a cannonball into empty space the amount of force the ball moving in accordance with the laws of inertia is: a) twice the force with which it was fired b) the same amount of force with which it was fired. c) one-half the force with which it was fired no force is required to keep it moving. Gravity does zero work when sliding a book across an inclined table? If the total, net force on a system is zero, momentum MUST be conserved for that system A perfectly elastic super ball is dropped and bounces to the same height I he momentum of the not conserved? Airbags in cars protect people by decreasing the total force exerted on the person? There is an easy way to find the equilibrium location for an object if you know the potential energy-you simply take a derivative and set it = zero. 11) If there are no friction forces on an object, then its momentum must be conserved 12) You slide an object across a level table and then slide it back to the exact point where it started from. The total work done by friction on the object is zero. 13) Imagine digging a deep shaft from the Earth's surface all the way to the center of the Earth if g 9 the surface, what would "g" be as you lowered yourself into the shall a) "g" would stay 9.8 all the way to the center b)"g" would van- linearly from 9.8 on the surface to zero at the center (c) "g" would vary linearly from 9.8 on the surface to infinity at the center If the potential energy U(r) is given by Fig A, If the potential energy U(r) is given by Fig A, the correct force is given by which curve in Fig B.Explanation / Answer
2>true
3>a
4>
5>d
6>true
7>true
8>false
9>
10>
11>true
12>
13>b
14>e (the bottom most straight line with slope 0)