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A lens has a focal length of 23.0 cm. Determine (by calculation) the object position for which the resulting image is upright and 4 times the size of the object.
It takes a student t = 7.6 s to push a block m = 11 kg at a constant velocity over a distance of d = 8.2 m. Write an expression for the energy required to move the block along this path in terms of the variables provided
A transformer is designed to step down the 209 volts to 30 volts. If there are 446 turns on the input coil, how many turns should there be on the output coil
When at rest, a proton experiences a net electromagnetic force that has a magnitude of 7.2 x 10^-4 N and points in the positive x-direction. Find the magnitude and direction of the magnetic field
Two identical spheres each carry a charge of -40.0 µC. The spheres are separated by a distance of 1.00 m. What is the electric force between the spheres
A particle leaves the origin with an initial velocity=(3.76i)m/s and a constant acceleration =(-1.43i-2.69j) m/s^2. find velocity and position vector of particle
When a train's velocity is 12.0 {\rm{ m/s}} eastward, raindrops thatare falling vertically with respect to the earth make traces thatare inclined 30.0 ^\circ to the vertical on the windows ofthe train.
A plane is flying southwest at 155 mi/h and encounters the wind from the west at 45mi/h? what is the planes new velocity with respect to the ground in standard position.
A boy coasts down a hill on a sled, reaching a level surface at the bottom with the speed of 8.4 m/s. If the coefficient of friction between sled's runners and snow is 0.040.
a thin uniform bar of mass m and length 32l is suspended by a string of length l and negligible mass. find the normal
Two forces act on a 55 kg object. One force has magnitude 65 N direction 59 degree clockwise from the positive x-axis, What is the magnitude of this object's acceleration
You've made the finals of the Science Olympics! As one of your tasks, you're given 1.1g of copper and asked to make a cylindrical wire, What length will you choose for your wire
The flywheel of a steam engine begins to rotate from rest with a constant angular acceleration of 1.47 rad/s2. Calculate the total angle through which the wheel has turned
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