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A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 200 N and is 3.20 m long. What is the tension in each rope when the 690 N worker stands 2.20 m from one end?
Jack and Jill are standing on a crate at rest on the frictionless, horizontal surface of a frozen pond. Jack has a mass of 74.5kg , What is the final speed of the crate if Jill jumps first and then Jack, again in the same direction
how long one electron to travel the full length of the cable.
A long thin rod of mass m = 100 g and length L = 1 m is pivoted about one end and oscillates in a vertical plane. Find the period (in s) of small oscillations
Explain how would the results have differed in this experiment if the pulley and of the track was lower that the other end of the track?
A parallel-plate capacitor has circular plates of 6.80 cm radius and 1.40 mm separation. Calculate the capacitance. What charge will appear on the plates if a potential differenceof 108 V is applied?
A 20.0-N block rests on a horizontal surface. The coefficients of static and kinetic friction between the surface, What is the force of friction acting on the block
A football is kicked from the ground with a velocity of 38 m/s at an angle of 40 degrees and eventually lands at the same height. How far away does the ball land
Compare the distance he wanted to cover in the real world with the "theoretical" distance that could be covered if there was no air resistance - If the engine was close to 100% efficient how much petrol would be used to overcome air resistance duri..
If it takes 3 golf balls to equal the mass of one tennis ball, what weight of tennis balls do you require equalling the number of golf balls in one kilogram of golf balls.
Four positively charged particles enter magnetic field as shown. What would be the path of each particle in the field
Particle 1 and particle 2 have masses of m1 = 1.1 × 10-8 kg and m2 = 6.3 × 10-8 kg, but they carry the same charge q. What is the radius (in cm) of the circular path for particle 2
A 1.10 kg mass is attached to a spring of force constant 9.5 N/cm and placed on africtionless surface. By how much will the spring stretch if the mass moves along a circular path of radius 0.530 m at a rate of 2.20 revolutions per second?
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