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A 1180-kg car is being driven up a 6.89 ° hill. The frictional force is directed opposite to the motion of the car and has a magnitude of 484 N. A force F is applied to the car by the road and propels the car forward. In addition to these two forces, two other forces act on the car: its weight W and the normal force FN directed perpendicular to the road surface. The length of the road up the hill is 347 m. What should be the magnitude of F, so that the net work done by all the forces acting on the car is 182 kJ?
Determine the force (in N) of the car on truck all through the impact. Call this force positive if it points to the east, and negative if it points to the west.
A U-shaped tube is open to the air at both ends and is partially filled with Mercury (density = 13,600 kg/m3). Water (density = 1000 kg/m3) is poured into the left arm until the water is 10 cm deep. How long upward from its initial position does t..
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. (a) How many electrons are there in 9.42 liters of water? (1 liter is equivalent to 1.00 × 10-3 m3) (b) What is the net charge of all these electrons?
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.
A person wearing a seat belt can withstand an acceleration of -310m/s squared. How thick should barriers be to carefully stop a car that hits a barrier at 120km/h.
Four charges Aq,Bq,Cq, and Dq (q = 5 x 10-07C) sit in a plane at the corners of a square whose sides have length d = 80.0 cm. A charge, Eq, is placed at the origin at the center of the square.
Rubber stopper attached to one end of the string and 100 g mass attached to the other end. A student gets the rubber stopper going in a horizontal circle above her head.
find out kinetic energy of ball at the highest point of motion.
A 6.4kg ball, hanging from the ceiling by a light wire 135cm long, is struck in an elastic collision by a 1.80 ball moving horizontally at 4.20 m/s just before the collision. Find the tension in the wire just after the collision.
How far apart are they when lighter astronaut has move.
During a snowmobile race our hero goes 16.7 km at 45 deg to the North of West (45 degrees above the -X). Then turns and goes 7.5 km due east. Then turns and goes 23 km at 40 degrees to the West of South (40 degrees to the left of -y).
A chair of weight 135 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 38 directed at an angle of 42 below the horizontal and the chair slides along the floor.
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