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Your team of test engineers is to release the parking brake so an 848.0-kg car will roll down a very long 6.1 percent grade in preparation for a crash test at the bottom of the incline. (On a 6.1 percent grade the change in altitude is 6.1 percent of the horizontal distance traveled.) The total resistive force (air drag plus rolling friction) for this car has been previously established to be Fd = 100 N + (1.2 N · s2/m2)v2, where v is the speed of the car. What is the terminal speed for the car rolling down this grade?
During a crash test, a car moving at 60 km/ hr collides with a rigid barrier and comes to a complete stop in 200 ms.
Tim and Rick both can run at speed and walk at speed, with. They set off together on a journey of distance. Rick walks half of the distance and runs the other half. Tim walks half of the time and runs the other half.
Two atomic clocks are synchronized while on Earth before one is launched (within a GPS satellite) into a medium-altitude Earth orbit. estimate the time difference between the two atomic clocks
The end point of a spring vibrates with a period of 1.9 seconds when a mass m is attached to it. When this mass is increased by 9.630×101 kg, the period is found to be 4.1 seconds. Find the value of m.
A 52g ice cube at its melting point is dropped into an insulated container of liquid nitrogen. How much nitrogen evaporates if it is at its boiling point of 77 K and has a latent heat of vaporization of 200 kJ/kg
Graphing either versus or versus gives a straight line. In the graph shown above, we chose to plot on the vertical axis, find the magnitude of the crankshaft's angular acceleration
A block of iron has the dimensions of 3.00 cm x 3.00 cm x 3.00 cm. It has a mass of 213 g. When placed in water, the block sinks. What volume of water did it displace.
The air inside a bicycle tire pump has 172 joules of work done on it as 64.8 joules of heat is conducted away from it
If the trough is being filled with water at the rate of 0.3 m3/min explain how fast is the water level rising when the water is 10 cm deep?
A jet of water squirts out horizontally from a hole near the bottom of the tank, What is the height, h, of the water level in the tank
A physicist has developed a device that generates a beam of alpha particles (each of which is a helium nucleus, consisting of two protons, two neutrons, and no electrons).
Calculate the net impulse delivered to a 138-kg quarterback initally running at 4.5 m/s if he's hit by a defending player and slowed to a speed of 1.1 m/s
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