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Two identical waves (of equal frequency and amplitude) arrive in phase at a certain point A. The resultant wave at point A is
1. A wave of the same amplitude and frequency as the two incoming waves.
2. A wave of the same frequency and twice the amplitude of the two incoming waves.
3. A wave of the same amplitude and twice the frequency of the incoming waves.
4. A wave of zero amplitude.
A 65.0 kg bungee jumper steps off abridge with a light bungee cord tied to her and to the bridge. Theunstretched length of the cord is 11.0m. She reaches the bottom of her motion 36.0 m below the bridge before bouncing back.
A certain particle of mass m has a momentum of 0.9mc. (For the following questions, leave all your answers in terms of m and/or c.) a) What is the particle’s speed? (Careful here….the answer is not 0.9c)
Every year, there is a foot race to the top of the Empire State Building. The vertical distance traveled (using the stairs!) is about 440 m. what was his average power output during the race
The emperical formula of an organic compound was found to be C3H7. find the molecular weight and molecular formula of the compound
A slingshot fires a pebble from the top of a building at a speed of 14.0m/s. The building is 31.0 m tall. Ignoring air resistance, find the speed with which the pebble strikes the ground when the pebble is fired horizontally.
At the moment of release, a baseball player has a horizontal velocity component of 39 meters per second, At what angle was the ball released
A 21 kg chimpanzee hangs from the end of a horizontal, broken branch of length L_0 = 1.6 m, What is the shear modulus for this branch
A car of mass 1,000 kg starts from rest and accelerates to a velocity of v = 24 m/s in a time interval of ?t = 11 seconds. what force is needed for this acceleration
The creation of elements in the early universe and in the starsinvolves protons tunneling through nuclei. Find the probability of the proton tunneling through 12C
the wings of tiger beetles the figure below are colored by interference due to thin cuticle-like layers. in addition
A 325-g model boat floats on a pond. The wind on its sail provides a force of 1.5 N that points 15° north of east. The drag force of the water on the boat is 0.78 N, toward the west. If the boat starts from rest and heads east for a distance of 3.4 m..
Your boss at the Cut-Rate Cuckoo Clock Company asks you whatwould happen to the frequency of the angular SHM of the balancewheel if it had the same density and the same coil spring, By what factor would the frequency change
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