Choose all the answers that apply. Energy _____. moves in waves cannot be created can be destroyed is the ability to do work can change form
3. An astronaut lands on an alien planet. He places a pendulum (L = 0.200 m) on the surface and sets it in simple harmonic motion, as shown in this graph. Answer the following questions: a. What is the period and frequency of the pendulum’s motion? b. How many seconds out of phase with the displacements shown would graphs of the velocity and acceleration be? c. What is the acceleration due to gravity on the surface of the planet in m/s2? Determine the number of g-forces. Show any necessary calculations. Answer:
A spring with a mass of 400.0 g is set into simple harmonic motion. The graph of the force of the spring vs. displacement is shown. The data of the position of the spring vs. time while it is oscillating are also shown. t (s) y (m) 0.0 0.00 0.2 0.09 0.4 –0.07 0.6 –0.04 0.8 0.10 1.0 –0.03 1.2 –0.08 1.4 0.09 1.6 0.01 1.8 –0.10 2.0 0.06 2.2 0.05 2.4 –0.10 2.6 0.02 2.8 0.09 3.0 –0.08 3.2 –0.03 3.4 0.10 3.8 –0.07 4.0 0.09 Do the following: a. Determine the spring constant from the graph. b. Make a position vs. time graph for the spring’s motion. c. Determine the amplitude and period of the spring’s motion from your graph. d. Calculate the period of the spring’s motion using the spring’s period equation. e. Determine the percent error by comparing the period from the graph (experimental value) to the calculated value (accepted value). Answer:
A motor running at 2600 rev/min is suddenly switched off and decelerates uniformly to rest after 10 s. Find the angular deceleration and the number of rotations to come to rest?
A car traveling west in a straight line on a highway decreases its speed from 30.0 meters per second to 23.0 meters per second in 2.00 seconds.The Cars average acceleration during the time interval. is
What formula do I use for the second question? For number 3 how is one energy converted to the other? ( using arrows ) I get number 4 so I don't need help with that!
