Hooke's law describes a certain light spring of unstretched length 33.3 cm. when one end is attached to the top of a doorframe and a 7.31 kg object is hung from the other end, the length of the spring is 42.8 cm. (a) find its spring constant. (b) the load and the spring are taken down. two people pull in opposite directions on the ends of the spring, each with a force of 150 n. find the length of the spring in this situation.

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

What is the relationship between the direction of motion of the balloon and the wind currents

Decreased sensitivity to an unchanging stimulus is known as