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A 30 g steel ball bounces elastically on a steel plate, always returning to the same maximum height h = 14.2 m.
What is the weight of the ball?
The period of oscillation of an object in a frictionless tunnel running through the Earth is 84.3 min. What is the time of oscillation of an object in a similar tunnel on the Moon.
The lightbulb in the circuit shown in the figure(Figure 1) has a resistance of 14? and consumes 9.7W of power, find speed of the rod
What's the quickest way to approach this problem? A car is traveling at 80 km/h along the highway. How long does it take for the second car to pass the first
Then the driver sees a red light up ahead at next intersection, and starts slowing down at the constant rate. The car stops at the red light, 180 {rm m} from where it was at t = 0.
Radio waves of wavelength 104 m from a galaxy reach a radio telescope by two separate paths, Find the height of the radio telescope dish above the water
A person's prescription for his new bifocal eyeglasses calls for a refractive power of -0.0650 diopters in the distance-vision part, find both the near point and the far point. It asks for both, not just one
Suppose the first stage of a two-stage rocket has total mass 1.30×10^4 kg, of which 1.10×10^4 kg is fuel. The total mass of the second stage is 1000 kg, of which 700 kg is fuel. What is the final speed of the second stage
What is the terminal speed of a 5.6 kg spherical ball with a radius of 3.0 cm and a drag coefficient of 1.55? The density of the air through which the ball falls is 1.2 kg/m3
In a laboratory experiment, a Physics Major is given a stopwatch. a meterstick, and a simple pendulum, what value will he obtain for the acceleration due to gravity
A child's toy consists of a piece of plastic attached to a spring in the figure below. The spring is compressed against the floor a distance of 2.00 cm, estimate the force constant of the spring
How long must a 0.60 mm diameter silver wire be to have a 0.56 A current when connected to the terminals of a 1.5 V flashlight battery
An eagle is flying horizontally at 5.7 m/s with a fish in its claws. It accidentally drops the fish. (a) How much time passes before the fish's speed doubles? (b) How much additional time would be required for the speed to double again?
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