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A 900 sports car collides into the rear end of a 2500 SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 2.6 before stopping. The police officers, knowing that the coefficient of kinetic friction between road and tires is 0.80, compute the speed of the sports car at impact. Evaluate what was the speed?
The reaction rate for the prepupal development of male Drosophila is temperature-dependent. Assuming that the reaction rate is exponential as in,reaction rate proportional to e?Ea/(kT). The activation energy for this development is then 2.81 10-19 J...
Suppose a ship heads directly north away from the docks in a harbor at a speed of 5.00 km/h. what is the Distance from dock
If John Glenn weighed 640 N on the Earth's surface, i) how much would be having weighed if his Mercury spacecraft had (hypothetically) remained at twice the distance from the center of the earth? ii) Why is it said that an astronaut is never truly..
A uniform meter stick is freely pivoted about the 0.20-m mark. If it is allowed to swing in a vertical plane with a small amplitude and friction, what is the frequency of its oscillations
a coil of wire is connected to an ideal 6.0-v battery at t 0. at t 10.3 ms the current in the coil is 200 ma. one
A worker pushes a 34 kg block 13m along a level floor at constant speed with a force directed 38° below the horizontal. If the coefficient of kinetic friction between block and floor was 0.19.
An electron traveling 10^7 m/s to the right enters a constant electric field that slows it to rest. a.)what is the potential different that the electron travels through as it slows down? b.)if the electron travels 0.1 meters before coming to a stop, ..
A 1.9cm × 1.9cm × 1.9cm box with its edgesaligned with the xyz-axes is in the electric field E? =(360x+150)i^N/C, where x is in meters
a computer monitor accelerates electrons and directs them to the screen in order to create an image. if the
an automobile and train move together along parallel paths at 18.4 ms.the automobile then undergoes a uniform
question1a 25mw jet engine produces a sound level of 120db threshold of pain at a distance of 100m from the engine
A non-uniform bar 5 meters has a center of gravity 1 meters from the heavy end. If it is placed on the edge of a block 1 meters from the light end and a weight of 1497N is placed at the light end of the bar, it will be balanced. What is the weight..
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