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A 920 kilogram sports car collides into the rear end of a 2300 kilogram SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 3.0 meter before stopping. The police officer, knowing that the coefficient of kinetic friction between tires and road is 0.80. Evaluate the speed of the sports car at impact.
a soccer player kicks a rock horizontally off a 38.0-m-high cliff into a pool of water. if the player hears the sound
a small immersion heater can be used in a car to heat a cup of water for coffee or tea. assume the manufacturers claim
Water flows with speed 1 m/s from a small hole made at the bottom of a tank filled with water. Find height of the tank
A 2 kg mass passes through the origin (x=0) with initial velocity -3m/s to the left on a horizontal frictionless table, Find the values of x which the mass has zero acceleration
A rectangular loop consists of N = 100 closely wrapped turns and dimensions a = 0.4m and b= 0.3m. What is the expected direction of rotation of the loop
A capacitor C stores charge Q when there is a potential difference V. When a potential difference of V + 12.5Volts is used, an extra 45.50 microC of charge is stored. What is the capacitance C.
A 90.0- and a 60.0- resistor are connected in parallel. Whenthis combination is connected across a battery, the currentdelivered by the battery is 0.152 A. When the 60.0- resistor is disconnected, the currentfrom the battery drops to 0.0642 A.
A circular coil of wire with 40 turns and a radius of 33.3 cm is laying flat on a horizontal, find the magnitude of the magnetic flux through the coil
The pulley system is used to lift a 61 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. The crate is rising with an acceleration of 2.4 m/s2. Assume the masses of the ch..
A satellite is in an elliptical orbit at altitudes ranging from 230 to 890 km At the high point its moving at 7.23 km/s. Howfast is it moving at the low point and find the radius of acircular orbit in which the total orbital energy of the satelliteis..
A 145 kg object is taken to a height of 270 km above the Earth's surface. What is the object's weight at this height
a women a toddler pushes a chair at a constant speed with a force of 25.0n for a distance of 2.5m. how much work is the
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