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A car is traveling down a hill that makes an angle of 13° with the horizontal. The driver applies her brakes, and the wheels lock so that the car begins to skid. The coefficient of kinetic friction between the tires and the road is ?K = 0.51.
A) Find the acceleration of the car.
B) How long does the car take to skid to a stop if its initial speed is 29 mph (13 m/s)?
Calculate the angular velocity? of an electron orbiting a proton in the hydrogen atom, given the radius of the orbit is 0.500x10-10 m . You may assume that the proton is stationary and the centripetal force is supplied by Coulomb attraction.
assume that a receiver has first amplifier stage with a 5k ohms input resistance, a power gain of 300, an input audio signal of 20uV, and an operating temperature of 27 Celsius.
A 1.90-cm-high object is situated 12.8 cm in front of a concave mirror that has a radius of curvature of 10.4 cm, calculate the location and the height of the image
The leg and cast weigh 220 N. find out the weight and the angle needed so that no force is exerted on the hip joint by the leg plus the cast.
In order for Sasha (in A-5) to feel weightless at the top of the ride, a) at what linear speed must the Ferris wheel tum? b) At this speed, how much would she appear to weigh at the bottom of the Ferris wheel.
Find out (a) capacitance and (b) maximum voltage that can be applied to a Teflon-filled parallel- plate capacitor having a plate area of 175 cm2 and an insulation thickness of 0.040 mm.
How various kilograms of nitrogen are boiled away in time of 7.50 h. car that hits a line of water barrels and takes 1.8s to stop.
If you apply a 4 N force on a string wrapped around an object that has an inertia of 0.03 \mathrm{kg\:m}^2 , what is the angular acceleration you expect from the falling object
Determine how many times greater heat loss occurs through a glass window thats 80.0 cm high, 70 cm wide, and 0.300 cm thick (k = 0.791 W/m°C) than a electrical supply line running outside to an exterior mounted light.
suppose a uniformly charged ring in the xy plane, centered at the origin. The ring has radius a and positive charge q distributed evenly along its circumference.
The wheel of a car has a radius of .350 m. the engine of the car applies a torque of 295 Nxm to this wheel that does not slip against the road surface.
A 36.0 g bullet moving at 478 m/s strikes a 3.7 kg bag of flour that is on ice, at rest. The bullet passes during the bag, leaving at 255 m/s. How fast is the bag moving when the bullet exits.
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