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A scaffold of mass 65 kg and length6.5 m is supported in a horizontalposition by a vertical cable at each end. A window washer of mass72 kg stands at a point 1.1 m from one end.
(a) What is the tension in the cable closer tothe painter?
N
(b) What is the tension in the cable further from the painter?
a partice moves along the path y=-0.090x^6(-7)meters with a constant speed of 4 m/s. assume dx/dt>_0. Determine the cartisian components of velocity and acceleration at x= - 2m
Excited states do not in general live very long before they decay.Suppose a certain excited state lives just 10^-7 s. In that case weknow the time when the atom is in the excited state quiteaccurately--to within ?t=10^-7 s. That means there is a ..
A cube floats in water. The length of each side is 8 cm. The cube is 3/4 submerged. find the weight of the cube in air
A 3.00 kg mud ball has a perfectly inelastic collision with a second mud ball that is initially at rest. What is the mass of the second mud ball
Two charged plates create a potential difference of 190 V. At a point halfway between the plates an electron is released from rest. What was the initial speed and direction of the proton
Two identically charged particles separated by a distance of 5.7 m repel each other with a force of 8.9 N. What is the magnitude of the charges
The combination of an applied force and a friction force produces a constant total torque of 35.2 N · m on a wheel rotating about a fixed axis. The applied force acts for 6.10 s. During this time, the angular speed of the wheel increases from 0 to..
Tarzan swings on a 31.0 m long vineinitially inclined at an angle of 37.0° with the vertical. What is his speed at the bottom of the swing if hestarts from rest
A transformer is designed to step down the 206 volts to 16 volts. If there are 418 turns on the input coil, find how many turns should there be on the output coil
A 145 g copper bowl contains 205 g of water, both at 20°C. A very hot 300 g copper cylinder is dropped into the water, causing the water to boil, with 5.40 g being converted to steam.
A worker is pulling a cart. The frictional force between the cart and the ground is 500N. What is the minimum force that must be applied by worker to move the cart.
two charges a and b are fixed in place at different distances from a certain spot. at this spot the potentials due to
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