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A particle moving along a 2-d x-y plane has its velocity described by the functions: Vx=2t^2 and Y=3t+2 where t is in seconds. At t=5s, what is the acceleration of the particle? (give the magnitude and direction of the acceleration)
A 40.00-W eletric motor is able to accelerate a 8755 g car from rest to 30.00 mph in 31.10 seconds. Calculate the efficiency of the motor
What are the magnitudes of the (a) impulse and (b) average force on the passenger during the collision? If the passenger were to jump upward with a speed of 6.00 m/s relative to the cab floor just before the cab hits the bottom of the shaft, what ..
A butterfly flies from the top of a tree in the center of a garden to rest on top of a red flower at the gardens edge. Determine the magnitude of the butterflys displacement
A converging lens of focal length 7.550cm is 20.5cm to the left of a diverging lens of focal length -6.50cm, Find the magnification of the coins final image
A yo-yo has a rotational inertia of 910 g·cm2 and a mass of 120 g. Its axle radius is 3.8 mm and its string is 100 cm long. The yo-yo is thrown so that its its initial speed down the string is 1.1 m/s.
some types of glass have a range of indices of refraction of about 1.4 to 1.7. What is the range of the polarizing angle
if a force of 500n is needed to stretch a spring 2 cm, what force is needed to stretch 5cm
Two unequal masses are hung from the ends of a rope that runs over a pulley. What is the acceleration of the smaller mass
A partly-full paint can has 0.55 U.S. gallons of paint left in it. (a) What is the volume of the paint, how thick is the layer of wet paint
The density of ice is 917 kg/m3. What fraction of the volume of a piece of ice will be above the water when it is floating in fresh water, Fraction of the volume above the water
The minimum distance required to stop a car moving at 38.0 mi/h is 41.0 ft. What is the minimum stopping distance for the same car moving at 68 mi/h, suppose the same rate of acceleration.
what is the final position of the man. What is the magnitude of the electric field (in N/C) at the point (-2.0 m, 3.0 m).
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