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Your van is parked on a steep hill with a 12o slope with the van held in place by the parking brake.
A) Find the magnitude of the frictional force that hold your van in place.
B) The coefficient of static friction between your van's tires and the road when wet is 0.25. Find the largest angle slope on which you can park your van in the rain therefore that it will not slide down the hill?
C) The coefficient of kinetic friction between your van's tires and the wet road surface is 0.20. If someone gave your van a push on the wet hill with the slope and it started to slide down the hill, find what would its acceleration be?
The current in a 100 watt lightbulb is 0.85 A. The filament inside the bulb is 0.25 mm in diameter. What is the elecron current in the filament
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A glass lens has a convex surface with radius 25.0 cm and a concave surface with a radius of 50.0 cm. Calculate the focal length of this lens
q1. a block with mass m 19.0 kg slides down an inclined plane of slope angle 17.8 deg with a constant velocity. it is
A uniform electric field of magnitude 395 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.00 cm. (a) What is the work done by the field on the electron? J (b) What is the change in..
At amusement parks, there is a popular ride where the floor ofa rotating cylindrical room falls away, How much centripetal force (in Newtons) acts on a 55.0-kg rider
a a 3 microcoulomb charge is at the coordinates 34 mm. a -4 microcoulomb charge is at the coordinates -25mm. what is
a particle with a charge of 1.60*10^-19 and a mass of 1.67*10^-27kg is found moving in a uniform magnetic field of a strength 1.50T. calculate the kineic energy of the particle
A 740 gram grinding wheel 21.5 cm in diameter is in the shape of a uniform solid disk. What torque does friction exert while the wheel is slowing down
A block of wood floats in fresh water with two-thirds of its volume V submerged. Find the density of the wood and the liquid
An 8.05 kg mass moving east at 13.7 m/s on a frictionless horizontal surface collides with a 11.3 kg mass that is initially at rest. What is the angle relative to the east
A block of mass 2.89 kg is pushed 2.20 m along a frictionless horizontal table by a constant 13.0 N force directed 23.0° below the horizontal. calculate the normal force exerted by the table
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