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There is a 1.2 m distance between a crest and an adjacent trough in a series of waves on the surface of a lake. In 30 s, 35 crest pass a buoy anchored in the lake. What is the speed of these waves?
A near-sighted person might correct his vision by wearing diverging lenses with focal length f = -60cm. use ray tracing to determine the height of the image
a thin lens of focal length 30.0 cm and is used to form an image that is twice the size of the object. Find the object position
Three infinite nonconducting sheets, with uniform positive surface charge densities, sigma, 2sigma, and 3sigma, are arranged to be parallel. What is their order, from left to right
A plastic film of thickness 290 nm appears to be green (?green = 510 nm), What is the plastic's index of refraction
A large storage tank is filled to a height 88 cm. The tank is punctured with a small hole at a height 21 cm from the bottom of the tank. How far from the tank will the stream land
At time t = 0 s, a wheel has an angular displacement of zero radians and an angular velocity of +15 ras/s. The wheel has a constant acceleration of -0.45 rad/s2. In this situation, the maximum value of the angular displacement, in rad, is closest to:
A 166 gram hockey puck has a initial velocity of vx = 27 m/sec and vy = 16 m/sec. What is the impulse delivered to the hockey puck in the x direction
A spaceship of mass 2.00 106 kg is to be accelerated to a speed of 0.820c. What minimum amount of energy does this acceleration require from the spaceship's fuel, assuming perfect efficiency?
A 8760-kg car is travelling at 29.7 m/s when the driver decides to exit the freeway by going up a ramp, What is the magnitude of the average drag force exerted on the car
cA square look has sides 12cm long and is wound with 50 turns of wire carrying 250mA of current. It is placed in a uniform magnetic field so the magnetic moment vector makes an angle of 70 degrees with respect to B. If B=0.65T what torque does the lo..
A tennis racket has nylon strings. If one of the strings with a diameter of 1 mm is under the tension of 15 N, how much is it lengthened from its original lenght of 40 cm.
While exploring a cave, a spelunker starts at the entrance and moves the following distances: 75.0 m north,300 m east, Find the resultant displacement from the cave entrance
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