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Use energy conservation to discover the mass of Planet II where it is observed that a meteor is approaching in a collision course. At7514 km from the center of the planet, the meteor has a speed of136.0 m/s and later at 2823 km a speed of 392.0 m/s.
A 0.0250 kg bullet moving horizontally at 400 m/s embeds itself into an initially stationary 0.500 kg block. What is their velocity just after the collision
A rock is thrown straight upward.it leaves the throwers hand at a height 1.5m above the surface of the earht with a speed 1.5m/s. what maximum height will the rock reach
do the same exercise as above with the replacement of the earlier transformer by a 40000-220 v step-down transformer
A car drives straight off the edge of a cliff that is 47.00m high. The police at the scene of the accident observed that the point of impact is 122 m from the base of the cliff. How fast was the car travelling when it went over the cliff.
A lens for a 35-mm camera has a focal length given by f= 43mm. What is the magnification of the image on the film
Given an RLC circuit where its resistance, capacitance and inductive reactance are all the same, 10 ohms. Is this circuit inductive, capacitive or in resonance? Secondly, if the frequency is doubled, what is the new impedance?
An object placed 11.00 cm from a concave spherical mirror produces a real image 8.40 cm from the mirror. If the object is moved to a new position 20.0 cm from the mirror, what is the position of the image?
A woman is reported to have fallen 139 ft from a building, landing on a metal ventilator box, which she crushed to a depth of 30 in. She suffered only minor injuries.
A battery has an emf of 5.9 V and internal resistance of 0.78 ?. The battery is attached to the load resistor R = 7.3 ?. Find the electric current in the circuit.
The Acapulco cliff diving competition, which was made famous in the 1970's on ABC's Wide World of Sports, involves a vertical drop of 37 m to the water below. How long will it take him to hit the water
question a beaker containing 300ml of water at 20 clesius has a 150g piece of aluminum at 50 celsius placed in it. what
Two small metallic spheres, each of mass 0.30g, are suspended as pendulums by light strings from a common point, calculate the magnitude of the charge on each sphere
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