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A physics student proposes to pull their van out of a mud hole on a country road by stretching a rope between the front of the van and an immovable object in front of the van, and then push sideways at the midpoint of the rope. Assume that the rope is 50 m long, and that a sideways force of 300 Newton is required to displace the midpoint sideways 5 meter. Find the tension in the rope and the forward component of the force on the van.
a glass vial filled with mercury vapor 4.88 ev between ground state and first excited state is placed between the
A small solid ball of mass M and radius R rolls without slipping on the track whose height y as a function of horizontal position x is given by y=ax^2 where a is a constant with the units of inverse length.
A block resting on a smooth surface explodes into three pieces. A 465 gram piece travels at 1.7 m/s, a 1999 gram piece travels 0.7 m/s, calculate the mass and direction of the third piece.
a charge of 6 pc is uniformly distributed throughout the volume between concentric spherical surfaces having radii of
A house painter is standing on a uniform, horizontal platform thatis held in equilibrium by two cables attached to supports on the roof. how large is the force exerted by the right-hand cable
A 74.8 g sample of copper at 143.2°C is added to an insulated vessel containing 165 mL of glycerol, C3H8O3 (l) (d = 1.26 g/mL), at 24.8°C. The final temperature is 31.1°C. The specific heat of copper is 0.385 J g-1°C-1
A 4-kg ball traveling to the right with a speed of 4 m/s collides witha 5-kg ball traveling to the left with a speed of 2 m/s. What is the total momentum of the two balls before they collide
An 8-kg ball hanging from the ceiling by a light wire 135cm long is struck in an elastic collision by a 2 kg ball moving horizontally at 5.00 m/s just before the collision. Find the tension in the wire just after collision.
a certain solenoid consists of 100 turns of wire and has a length of 10.0 cm.a find the magnitude of the magnetic field
Copper wire has a breaking stress of about 3×108 N/m2. What is the maximum load that can be hung from a copper wire of diameter 0.66 mm
A grasshopper makes four jumps. The displacement vectors are (1) 25 cm, due west; (2) 23.5 cm, 50° south of west; (3) 24.5 cm, 56° south of east; and (4) 36 cm, 43° north of east. Find the magnitude and direction of the resultant displacement. Expres..
how long does it take light to travel through a 6.73 mm thick piece of window glass? through what thickness of water
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