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A Carnot engine operates between a high temperature reservoir at 492 K and a river with water at 290 K. If it absorbs 4000 J of heat each cycle, how much work per cycle does it perform?
A block of 4.4 kg is held at the top of a smooth incline. The incline has height of 2.1 m and is at an angle of 19 degrees above the horizontal. How much work was done by friction on the block
Dave pushes his son on a sled across snow. As Dave pushes hisson speeds up. Which statement is true?
In a spherical metal shell of radius R, an electron is shot from the center directly toward a tiny hole in the shell, What is the magnitude of the electron's acceleration
water is moving with a speed of 2.3 ms through a perfectly sealed long pipe with a cross sectional area of 5 cm2. the
A 5.80 m length of 2.0 mm diameter wire carries a 750 mA current when 22.0 mV is applied between its ends. determine the electric field inside the wire
An airplane can be made invisible to radar by coating the plane with a thin layer of an antireflective material. If radar waves have a wavelength of 3.0 cm.
Consider three charged particles arranged in an equilateral triangle with sides of length d. Find the electric field vector at the triangle's center
question1two vessels a and b each have n molecules of the same perfect monoatomic gas. firstly the two vessels are
At a particular instant, charge = 4.80×10^?6 C is at the point (0, 0.250 m , 0) and has velocity (9.20 x 10^5 m/s) i. Charge = ?2.90×10?6 C is at the point (0.150 m , 0, 0) and has velocity (-5.30 x 10^-5) j.
a proton moving at a constant velocity of 106 ms enters a region of uniform magnetic field perpendicular to its
A golfer hits a shot to a green that is elevated 3.20 m above the point where the ball is struck. find the speed of the ball just before it lands
Two point charges, initially 2.0 cm apart, experience a 1.0-Nforce. If they are moved to a new separation of 8.0 cm, what is the electric force between them?
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