A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes 0.8 s for the wave to travel the 20 m to the opposite tower. If one meter of the rope has a mass of 0.35 kg, find the tension in the tightrope
219 N
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A rock that weighs 100 lb on Earth is taken to the Moon. Which of the following statements accurately describes what would be observed?
A. The rock is easier to lift because its weight is less on the moon B. The rock is more difficult to lift because the Moon's radius is less than Earth's C. The rock is just as difficult to lift on the Moon as it is on Earth because its mass hasn't changed D. The rock is easier to lift because its mass is less on the moon
A Hooke's law spring is compressed 12.0 cm from equilibrium, and the potential energy stored is 36.0 J. What compression (as measured from equilibrium) would result in 100 J being stored in this case?
a. 20.0 cm c. 13.6 cm b. 14.1 cm d. The correct answer is not given.
The characteristic peaks in an x ray spectrum of an atom occur because of rapid deceleration of the bombarding electrons
Indicate whether the statement is true or false
Why is the Cepheid's period related to their luminosity?
What will be an ideal response?