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A student's far point is at 17.0 cm, and she needs glasses to view her computer screen comfortably at a distance of 45.0 cm. What should be the power of the lenses for her glasses?
A vertical wall (5.4 m 2.4 m) in a house faces due east. A uniform electric field has a magnitude of 164 N/C. This field is parallel to the ground and points 32° north of east. What is the electric flux through the wall?
A billiard ball moving at 5.00 m/s strikes a stationary ball of the same mass. Find the velocity (magnitude and direction) of the second ball after collision
a 50-N crate is pulled up a 5-m inclined plane by a worker at a constant velocity. what is the force applied by the worker
When light with a wavelength 480 nm or shorter shines on a metal surface, a current is measured. A. What is the work function of this metal B. What is the maximum kinetic energy an electron will have if violet light (380 nm) shines on the surface
If a disk rotating at 500 rpm couples to a stationary disk with five times the moment of inertia, what is the angular speed of the combination
Say you want to make a sling by swinging a mass M of 1.9 kg in a horizontal circle of radius 0.036 m, using a string of length 0.036 m. How strong will the string need to be
The resolution of the eye is ultimately limited by pupil diameter. What is the smallest diameter spot an eye can produce on the retina if pupil diameter is 4.45? Assume light with a wavelength of = 600 .
An aircraft weighing 803 N is accelerated at 10 m/s2 for 9 seconds, at which time the aircraft launches. How much work was done on the aircraft
While sitting in physics class one day, you begin to ponder the workings of the analog clock on the classroom wall. Calculate the angular velocity of the second hand
A rectangle has an area of 33.66 cm2. When both the length and width of the rectangle are increased by 1.30 cm, find the length of the shorter of the two sides of the initial rectangle
How much time does the stone take to reach the ground.
Find the force P that must be applied to a piston of area 11.10 cm2 to produce sufficient fluid pressure to support a car weighing 10,251 N by means of a column of fluid of cross sectional area 260 cm2, How far must the smaller piston move in order..
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