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A scaffold supporyt a bricklayer and bricks weighing 450lb. If the forces at one end support is 290 lb, what is the supporting force at the other?
Consider the system described in the example with m1 = 0.51 kg and m2 = 0.40 kg. If F is sufficiently large, it is clear that the block will accelerate to the right. Find the range of F that allows the system to remain at rest
A block of mass 2.50 kg is pushed 2.60 m along a frictionless horizontal table by a constant 14.0 N force directed 25.0ª below the horizontal. Determine the work done by the normal force exerted by the table
A 60kg boy and a 45 kg girl use an elastic rope while engaged in a tug-of-war on a frictionless icy surface. If the acceleration of the girl toward the boy is 2.3 m/s2, find the magnitude of the acceleration of the boy toward the girl.
An ammeter with an internal resistance of 53.0 ? measures a current of 5.75 mA in a circuit containing a battery and a total resistance of 1290 ?. Determine the actual value of the current
A strip of doped silicon 335 µm wide contains 9.4 1022 conduction electrons per cubic meter and an insignificant number of holes. What is the thickness of the strip
In the Bible, Noah is instructed to build an ark 300 cubitslong, 50.0 cubits wide, and 30.0 cubits high . Historical recordsindicate a cubit is equal to half a yard.
The length of the column of mercury in thermometer is 4.0 centimeter when the thermometer is immersed in ice water and 24.0 centimeter, Find what should the length be at room temperature
q1. two 53 rm g blocks are held 30 rm cm above a table. one of them is just touching a 50-long spring. the blocks are
What is the total negative charge, in coulombs, of all the electrons in a small 1.05{\rm g} sphere of carbon? One mole of C is 12.0{\rm g} , and each atom contains 6 protons and 6 electrons.
Two blocks are hung by a string draped over a pulley, a 1.5-kg block on the left and a 3.0-kg block on the right. What is the change in the kinetic energy of the system
A basketball (m = 0.60 kg) is dropped from rest. Just before striking the floor, At what height was the basketball dropped
What diameter must a helium filled balloon have to float with neutral buoyancy? The mass of the empty balloon is 2.0g
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