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Q1. The driver of an 1800 {kg} car travelling on a horizontal road at 100 kmh suddenly applies the brakes. Because of a slippery pavement, the friction of the road on the tires of the car, which is what slows down the car, is 20.0 percent of the weight of the car.
What is the acceleration of car?
Q2. A 1400 {rm kg} wrecking ball hangs from a 16 {rm m}-long cable. The ball is pulled back until the cable makes an angle of 27.0^circle with the vertical. By how much has the gravitational potential energy of the ball changed?
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the period of a satellite in a geosynchronous orbit
question1a planet of mass 8 times 1024 kg is at location lsaquo minus3 times 1011 6 times 1011 0 rsaquo m. a star of
A block with mass m = 3.58 kg is placed against a spring on a frictionless incline with angle ? = 32.5°. find the elastic potential energy of the compressed spring
A crate of mass 2000 kg is hanging from a crane at the end of a cable 12 m long. what angle will the cable finally make with the vertical
What is the turntable rotation angular velocity
What is the electric potential at the center of a hollow metal sphere of outside diameter 14. cm which holds a net charge of 3.3 muC
A rectangle has an area of 36.38 cm2. When both the length and width of the rectangle are increased by 1.60 cm, Calculate the length of the shorter of the two sides of the initial rectangle
Determine the magnitude of the force between two point charges, Q1 = -2e located at (-3.60 cm, +4.10 cm) and Q2 = -8e located at (-0.60 cm, -8.60 cm).
A 2400 kg car moving at an initial speed of 25 m/s along a horizontal road skids to a stop in 64 m. Find the energy dissipated by friction
A 21.5 g bullet strikes a 0.650 kg block attached to a fixed horizontal spring whose spring stiffness constant is 7.30 x 10^3 N/m and sets it into vibration with an amplitude of 21.5 cm. What was the speed of bullet before impact if the bullet and bl..
A certain car battery with a 12.0 V emf has an initial charge of 178 A•h. assume that the potential across the terminals stays constant until the battery is totally discharged, for how long in hours can it deliver energy at the rate of 115 W.
A pendulum has a time period of 5 sec at a particular place. calculate the acceleeration due to gravity at this place
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