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A ball is thrown initial 10m/s at 30 degree above horizon from a platform of 20 meter above the ground.
A) calculate the maximum height reached by the ball.
B) calculate the time and velocity right before it hits the ground.
A pipe is horizontal and carries oil that has a viscosity of 0.15 Pa · s. The volume flow rate of the oil is 5.8 10-5 m3/s. What is the absolute pressure at the input end
an 1800 kg car is moving at 14 m/s slows to 8.0 m/s in 4.4 s. Use the impulse momentum theorem to find the magnitude of the force on the car
An elevator with a mass of 1000 kg, including passengers, is ascending at constant speed. What is the power delivered by a motor for this ascend
When its coil rotates at a frequency of 258 Hz, a certain generator has a peak emf of 72 V. What is the peak emf of the generator
a hydrogen atom is in the n= 2 state. what's the wavelength of a photon with this energy
One of the fragments falls straight downward as though it had been released from rest. Explain how far from the gun does the other fragment land
The blades on a lawn mower require 5 revolutions to turn at a rate of 60 revs/sec. determine the angular acceleration of the blades
A particle of charge Q is fixed at the origin of an xy coordinate system. At t = 0 a particle (m = 0.897 g, q = 3.51 µC is located on the x axis at x = 15.4 cm, moving with a speed of 72.2 m/s in the positive y direction. For what value of Q (in ?..
A small steel sphere of mass 0.40kg is attached by a 5.0m long cord to a swivel pin set into the surface of a frictionless table top. What is the magnitude of the centripetal accerleration of the sphere
Estimate the change in COP of your electric food freezer when it is removed from your kitchen to its new location in your basement, which is 8 C° cooler than your kitchen. (Assume that the temperature in the kitchen is 20°C and that the temperature o..
Determine the magnitude and direction of impulse delivered to the ball by the floor.
Consider a bird that flies at an average speed of 10.7 m/s and releases energy from its body fat reserves at an average rate of 3.70 W, How far will the bird fly before feeding again
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