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Q.Consider the 607 N weight held by two cables shown below. The left-hand cable had tension T2 and makes an angle of 50? with the ceiling. The right-hand cable had tension T1 and makes an angle of 42? with the ceiling.
a) What is the tension in the cable labeled T1 slanted at an angle of 42?? Answer in units of N.
b) What is the tension in the cable labeled T2 slanted at an angle of 50?? Answer in units of N.
Q. A hockey puck (mass) 4 kg and a velocity 4 m/s going east (positive) collides head on with a hockey player (mass 86 kg) with a velocity of 8 m/s going west.
What is the momentum of the puck?
What is the momentum of the player?
What is the total momentum of the system after the collision?
Heather and Jerry are standing on a bridge 46 above a river. Heather throws the rock straight down with a speed of 20. Jerry, at accurately the same instant of time, throws a rock straight up with the same speed. Overlook air resistance.
compute the distance from the central maximum to the first bright region on either side of the central maximum.
Standing on ground 3.5 from the wall of a building, you want to throw a package from your 1.6 shoulder level to someone in a second-floor window 4.5 above the ground.
How much sound power will strike the eardrum of an airport worker 15.3 m from the aircraft? (Use 1.9 10-2 m as the diameter of the ear.)
What is the terminal speed for an 84.00 skier going down a 38.0 degree snow-covered slope on wooden skis = 0.06? Assume the skier is 1.70 m tall and 0.500 m wide.
What is mechanical energy dissipated by resistive forces
A car is behind a truck going 25m/s on the highway. The car's driver looks for an opportunity to pass, guessing that his car can accelerate at 1.0m/s2. He gauges that he has to cover the 20-m length of the truck, plus 10m clear room at the rear of..
A closely wound rectangular coil of 80 turns has dimensions 25 rm cm by 40 rm cm. The plane of the coil is rotated from a position in which it makes an angle of 37 degrees with a magnetic field of 1.10 rm T to a position perpendicular to the field..
An 800-N man stands halfway up a 5 m long ladder of negligible weight. The base of the ladder is 3 m from the wall as shown. suppose that the wall-ladder contact is frictionless, wall pushes against the ladder with a force of what magnitude.
How many J of energy must be removed when 156 g of steam, at a temperature of 175.0 °C, is cooled and frozen into 156 g of ice at 0 °C.
Find the radius of the largest water drop
A gymnast with mass m1 = 42 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 106 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
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