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A minivan is tested for acceleration and braking. In the street-start acceleration test, elapsed time is 8.2 s for a velocity increase from 10 km/h to 100 km/h. In the braking test, the distance traveled is 44 m during braking to a stop from 100 km/h. Assuming constant values of acceleration and deceleration, determine
(a) The acceleration during the street-start test,
(b) The deceleration during the brakingtest.
A 5.00 kg box is pushed a distance of 15.0 m up a rough 20.0 degree incline with a constant force of 35.0 N. calculate he kinetic energy of the box after moving 15.0 meters
In a cathode-ray tube, a beam of electrons is projected horizontally with a speed of 1.0x10^9 cm/s into a region between a pair of horizontal plates 2.00 cm long.
Suppose the device is used at a service station to measure the flow rate of gasoline (? = 7.00 102 kg/m3) through a hose having an outlet radius of 2.56 cm. Find the speed of the gasoline as it leaves the hose
The current in a 100 watt lightbulb is 0.900 A . The filament inside the bulb is 0.280 mm in diameter. What is the current density in the filament
For a science experiment you need to electroplate a 120nm-thick zinc coating onto both sides of a very thin, 2.5cm X 2.5cm copper sheet. how long will it take the zinc to reach the desired thickness
A particle of mass 0.500 kg is attached to the 100-cm mark of a meterstick of mass 0.150 kg. The meterstick rotates on the surface of a frictionless, Calculate the angular momentum of the system
A copper wire has a resistance of 0.400 at 20.0°C, and an iron wire has a resistance of 0.430 at the same temperature
A cylindrical barrel with a radius of 30 centimeter and a mass of 75 kilogram rolls across a warehouse floor without slipping. The speed of the barrel's center of mass is 8.0 m/s. Compute the total kinetic energy of the barrel
A block of mass M is sliding down a rough inclined plane with constant velocity v. Find an expression for the angle theta
A 5 Watt night-light is plugged into a 120 Volt circuit and operates continuously for 1 year. Compute the resistance of its filament
A spring with an unstrained length of 0.075 m and a spring constant of 2.3 N/m hangs vertically downward from the ceiling. What is the magnitude of the external electric field
A satellite moves in a circular orbit around Earth at a speed of 4251 m/s. Determine the period of the satellite's orbit
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