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When an object is placed 46.0 cm from a convex mirror, the image formed is half the height of the object. Where should the object be placed so that the height of the image becomes one-eighth the height of the object?
A car slows down with an acceleration that has a magnitude of3.2 m/s2. While doing so, it travels 120 m in the + xdirection and ends up with a velocity of +4.0 m/s. a) what is the car’s initial velocity?
A 1000 kg cart is rolling to the right at 1.50 m/s . A 50.0 kg man is standing on the right end of the cart. What is the speed of the cart
Using a highly sensitive parabolic sound collector, Amy records the frequency of a tuning fork as it drops into the Grand Canyon. She drops the vibrating tuning fork from rest at t=0. She records a frequency of 1657.0 Hz at t=6.400 s.
Determine the power supplied to the 8.0 Ω resistor in the circuit shown in the drawing. (R1 = 4.0 Ω, R2 = 8.0Ω and V1 = 10 V.)
a helicopter moves in such a way that its position at any time is described by the horizontal and vertical equations x
A 17.00 kg block is pushed up a frictionless inclined plane that makes an angle of ? = 33 o with the horizontal direction. What force is needed to move the block with constant speed
as part of a safety investigation two 1900kg cars traveling at 24ms are crashed into different barriers. find the
A heat engine takes heat QH from a hot reservoir and uses part of this energy to perform work W. Assuming that QH cannot be changed, how can the efficiency of the engine be improved?
A 230 kilogram crate rests on a surface that is inclined above the horizontal at an angle of 19.4 degree. Find coefficient of static friction between crate and incline
A bat flying in complete darkness emits high frequency sound of 100 kHz to locate objects. What is the frequency in which the bat is received
A 20.0 kg crate sits at rest at the bottom of a 12.9 m long ramp that is inclined at 33 degrees above the horizontal. What is the total work done on the crate during its motion from the bottom to the top of the ramp
A 4 kg box is raised from rest adistance of 6 m by a vertical force of110 N. Find the final kinetic energy of the box
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