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a uniform 2000 kg beam 10 m long supports a 500 kg weight 3 m for the right support. calculate the forces in each of the vertical support columns?
Sheena can row a boat at 3.03 mi/h in still water. She needs to cross a river that is 1.10 mi wide with a current flowing at 1.55 mi/h. How long does it take her to cross the river
A ball of radius 0.200 m rolls with a constant linear speed of 3.22 m/s along a horizontal table. What is the angular displacement of the ball while the ball is in the air
Two balls undergo a perfectly elastic head-on collision, with one ball initially at rest. If incoming ball has a speed of 200 m/s. What is the final speed of the incoming ball if it is much more massive than stationary ball.
Write down the expression for net torque
A 1.5 kg object initially at rest is raised to a height of 10 m by a force of 40 N. What is the velocity of the object at this height What time is needed for this motion
A cord is used to vertically lower an initially stationary block of mass M = 14 kg at a constant downward acceleration of g/7. find the work done by the cord's force on the block
How numerous atoms does each hand contain
A 7.0cm--diameter disk emits light uniformly from its surface. 20cm from this disk, along its axis, is an 9.0cm--diameter opaque black disk; the faces of the two disks are parallel. find the diameter of the completely dark part of this shadow
What is the speed of the large cart after the collision. A 345 g chunk of gold at 98.5 degrees Celsius is dropped into a 656 g of water at 22.5 degrees Celsius. What will final temperature of the gold be after the system reaches equilibrium.
A woman stands on a scale in a moving elevator. Her mass is 60.9 kg, and the combined mass of the elevator and scale is an additional 819 kg. Starting from rest, the elevator accelerates upward. Through the acceleration, the hoisting cable applies a ..
a skateboarder is moving at a constant velocity of 1.75 ms when she starts up an incline that causes her to slow down
A particle possessing 8.25 uC of charge and mass 8.55 g is fired at a speed of 255 cm/s through two charged plates of length 34.6 cm, calculate the distance y in which the charge falls below its intended path
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