I need help please with A mass of 286 g is placed on a spring with an unknown spring constant
while on Earth. Measure the original length of the spring and then click on
the place mass button. The mass is slowly lowered until equilibrium is
established. Based on the change in length of the spring, determine the
spring constant of the spring. Enter your answer into the box below and
then hit submit to see if you are correct.

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?