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Q. A scaffold of mass 78 kg and length 5.30 m is supported in a horizontal position by a vertical cable at each end. A window washer of mass 86 kg stands at a point 1.1 m from one end. What is the tension in (1) nearer (relative to the person) cable and (2) farther (relative to the person) cable?
Q. What would be the equilibrium temperature when a 227 block of copper at 265 is placed in a 155 aluminium calorimeter cup containing 844 of water at 14.50?
Calculae the flow rate ( in grams per second) of blood in the aorta if the flow speed is 42 cm/s.
How to find out an initial speed of the bullet
A 65kg trampoline artist jumps vertically upward from the top of a platform that is 2 m above the trampoline with a speed of 4.80m/s.
How much work is done if the same tension is directed parallel to the snow.
A small rocket to gather weather data is launched straight up. few seconds into the flight, its velocity is 110 and it is accelerating at 17 . At this instant, the rocket's mass is 50 and it is losing mass at the rate of 0.45 as it burns fuel.
How to calculate the efficient canyon albedo
There is a beam that weighs 1500 kilograms and is twenty meters in length. It has a 15000 kilogram mass on the right side, five meters from the center of gravity. obtain the net tension of each brace that is holding up the beam on both sides.
A 260 wooden raft floats on a lake. When an 80 man stands on the raft, it sinks 5.0 deeper into the water. When he steps off, the raft vibrates for a while. What is the frequency of vibration.
What would be the equilibrium temperature when a 271 g block of copper at 280°C is placed in a 169 g aluminum calorimeter cup containing 817 g of water at 11.5°C.
A ballplayer standing at homeplate hits a baseball that is caught by another player at the same height above the ground from which it was hit. The ball is hit with an initial velocity of 21 m/s at an angle of 54° above horizontal.
A simple harmonic oscillator takes 10s to undergo five complete vibrations.
How fast will the electron be moving. What was his average speed (in m/s) for the race.
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