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A submerged scuba diver looks up toward the calm surface of a freshwater lake and notes that the Sun appears to be 32 degrees from the vertical. The diver's friend is standing on the shore of the lake.
At what angle above the horizon does the friend see the sun?
At a factory, a noon whistle is sounding with a frequency of 497 Hz. As a car traveling at 84km/h approaches the factory, driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the change i..
A 2100 kg truck traveling north at 41 km/h turns east and accelerates to 54 km/h, What is the change in the truck's kinetic energy
A ball is thrown directly downward with an initial speed of 8.50 m/s, from the height of 29.5 m. After what time interval does it strike the ground.
The position vector of a particle of mass 2.10 kg as a function of time is given by rarrowbold = (6.00 ihatbold + 4.00 t jhat bold), Determine the angular momentum of the particle
A skateboarder shoots off a ramp with a velocity of 6.4 m/s, directed at an angle of 62° above the horizontal. How high above the ground is the highest point that the skateboarder reaches
q1. a large cylindrical water tank is mounted on a platform with its central axis vertical. the water level is 3.75 m
Suppose the magnetic field changes uniformly from 0.405 T to 0.220 T in the next 0.684 s. Compute the induced emf in the coil
A wedge of mass M and angle ? is placed on a flat frictionless surface. A crate of mass m is placed on the wedge at height h and starts sliding down the wedge without friction. Find the acceleration of the crate and the wedge relative to the gr..
The jet accelerates uniformly, and during that time, the pendulum oscillates about the equilibrium position shown by the solid line, with D = 0.370 m. find the magnitude of the plane's acceleration.
Explain how a submarine is caused to submerge and surface without the use of its propulsion propeller and fins
A large air-filled 0.247-kg plastic ball is thrown up into the air with an initial speed of 11.3 m/s. What fraction of its original energy has been lost to air friction
You throw a ball vertically upward so that it leaves the ground with velocity 2.49 m/s. (a) What is its velocity when it reaches its maximum altitude. (b) What is its acceleration at this point.
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