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An object is placed 10 cm in front of a concave mirror whose focal length is 21 cm. The object is 3.9 cm tall. Decide (a) the location of the image, taking a real image as a positive value and a virtual image as a negative value.(b) Decide the height of the image, where an inverted image will have a negative height and an upright image will have a positive height.
An object with total mass mtotal = 16.7 kg is sitting at rest when it explodes into three pieces. What is the magnitude of the final momentum of the system
a variable force f(x) =8x^3 -2x acts on a 2.4 kg objects movinf it from x=0.2 to x=1.4 m. what was the work done on the object
A monatomic ideal gas expands from point A to pointB along the path shown in the drawing. Determine the work done by the gas
Select all that apply. Which is the following statements is true?
A magnetic field is perpendicular to a 0.0409 m x 0.0585 m rectangular coil of wire that has 115 turns, What is the magnitude of the change in the magnetic field
A body is traveling at 5.70 m/s along the positive direction of an x-axis. No net force acts on the body. What is the speed of the forward part
Two speakers are driven by a common oscillator at 800 Hz and face each other at a distance of 1.25 m. Locate the points along a line joining the two speakers where relative minima would be expected. (Use v = 343 m/s).
A 3 kg block moving at 4 m/s makes a head-on elastic collision with a stationary block of mass 2 kg. Use coservation of momentum and the fact that the relative speed of recession equals the relative speed of approach to find the velocity of each bloc..
A blackened roof measures 20 m by 50 m. If the temperature of the sun's surface is 6000K, Stefan's constant (σ) is 5.7 x 10-8 Wm-2K-4, Determine how much solar energy is incident on the roof per minute
A 10-m-long glider with a mass of 780kg(including the passengers) is gliding horizontally through the air at 30m/s when a 70Kg skydiver drops out by releasing his grip on the glider. What is the glider's speed
when 117 j of energy is supplied as heat to 2.00 moles of an ideal gas at constant pressure the temperature rises by
A 5.0 kg scientific instrument, an air sampler, is tied to a weather balloon by a rope. If the upward acceleration of the balloon is 3.4 m/s2, find the tension in the rope
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