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A gemstone is placed 20.0 centimeter in front of a concave mirror and is within the focal point.
(a) When is the concave mirror replaced with a plane mirror, the image moves 15.0 centimeter toward the mirror. Determine what is the focal length of concave mirror?
(b) Determine where would the plane mirror have to be located relative to the gem so the image did not move?
question ultrasonic acoustic waves are diffracted by a pair of parallel slits 100mm apart. the zeros in the diffraction
A point source of light illuminates an aperture 4.00 away. A 17.0 -wide bright patch of light appears on a screen 2.00 behind the aperture, How wide is the aperture
A current of 15.0 mA is maintained in a single circular loop of 2.40 m circumference. A magnetic field of 0.870 T is directed parallel to the plane of the loop. Calculate the magnetic moment of the loop
A bucket filled w/water has a mass of 30kg and is attached to arope that is wound around a cylinder w/radius of 50cm at the top ofa well. What torque does the weight of the water and bucket produce on the cylinder?(g=9.81 m/s2, take care of units1..
Three forces of magnitudes F1 = 4.0 N, F2 = 6.0 N, F3 = 8.0 N, F4 = 5.0 N, and F5 = 5.0 N are applied to a block of mass m = 3.0 kg, initially at rest, at angles shown on the diagram. (Figure 1) All angles should be measured from the positive x ax..
The rotor in a certain electric motor is a flat, rectangular coil with 85 turns of wire and dimensions 2.25 cm by 4.36 cm. The rotor rotates in a uniform magnetic field of 0.800 T. What is the average power of the motor
A storage tank at STP contains 18.5kg of butane gas, C4H10, Determine the number of moles of butane gas
a puck with mass 0.28 kg moves in a circle at the end of a string on a frictionless table with radius 0.75 m. the
A glass is slid across a table top, goes off the edge and falls to the floor below. With what velocity did the glass leave the table top
A 1200 kg two-stage rocket is traveling at aspeed of 6.90*10^3 m/s away from the Earth, What is the speed and direction of each section
an inductor carries a current of 2.5 A, and the magnetic energy stored in the inductor is .0035 J. What is the inductance
a 1900 kg car rounds a curve of radius 70 m banked at an angle of 12 deg. what is the magnitude of the friction force
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