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A ball rolls horizontally with a speed of 9.0m/s off the edge of a tall platform. If the ball lands 9.0m from the point on the ground directly below the edge of the platform, what is the height of the platform?
A hiker weighing 565 N carries a 186 N pack up Mt. Whitney (elevation, 4420 m), increasing her elevation by 3000 m. Find the minimum internal work done by the hiker's muscles
Find out that the value of the gravitational field strength
A charge of +378 C is fixed at the center of a square that is 0.64 m on a side. How much work is done by the electric force as a charge of +1.8 C is moved from one corner of the square to any other empty corner?
The quartz crystal in a digital watch has a frequency of 32.8 kHz. What is its period of oscillation?
Students in a physics lab are to determine the specific heat of copper experimentally. They place 0.150 kg of copper shot into boiling water, what is the specific heat of copper
A 5 kg mass attached to a horizontal spring is pulled from its equilibrium position by 4 m and let go. find is the maximum velocity of the mass
A spherical cavity is excised from the inside of the sphere. The cavity has radius a4and is centered at position h, Find the electric field inside the cavity
Two meters from the left end is the 500 N washing equipment. Joe is 0.500 m from the right end and weighs 920 N. Given that the scaffold is in rotational and translational equilibrium, illustrate what are the forces on each cable?
A mechanic pushes a 2.20 x10^3 kg car from rest to a speed of v, doing 5400 J of work in the process. During this time, the car moves 28.0 m. Neglecting friction between car and road, find each of the following.
An aluminum wire carrying a current of 3.0 A has a cross-sectional area of 2.0 ? 10-6 m2. Find the drift speed of the electrons in the wire
A series RLC circuit has components with the following values: L = 22.0 mH, C = 86.0 nF, R = 25.0 ?, and ?Vmax = 100 V, with ?v = ?Vmax sin ?t. Find the resonant frequency of the circuit.
When driving west toward the Rocky Mountains, you see a peak 2.8 above the horizon. Your GPS gives your current elevation as 1500 , and according to the map, you're 22.5 (horizontally) from the peak. Find the peak's elevation. Express your answer ..
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