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2750 g of lead at 120 degrees C is added to .150 kg of 85 degrees C water. The heat of vaporization for water is 22.6 X 10^5 J/kg. How much water (in kg) evaporates?
An L-R-C circuit has L = 0.400 H, C = 2.65×10?5 F, and a resistance R. Angular frequency is 307 rad/sec when R = 0.
Consider a concave mirror with a focal length of 18.90 cm. Find the location of the image when the object is 10.20 cm from the mirror. What is the magnification of the image? What is the radius of curvature of the mirror in cm? Is is virtual and u..
A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 210 mi/h in 3.00 s. (a) Find the average acceleration of the plane. m/s2 (b) Assuming the acceleration is constant, find the distance the plan..
In 1974, physicist Gerard K. O'Neil proposed a cylindrical space station that would rotate about its central axis to simulate gravity along the outer surfaces
Estimate the time the ball is in contact with the floor to be 0.06 seconds. Compute the average force the floor exerts on the ball.
A beam of electrons is incident on two slits separated by a distance of 2.0E-6m. Calculate the kinetic energy of the electrons
A ball is thrown straight upward with an initial speed of 25 m/s. how high does the ball go before falling back down
A bolt comes loose from underneath an elevator that is moving upward at a speed of 4.5 m/s. How high up was the elevator when the bolt came loose
A 3.500 kg puppet oscillates at the end of a light spring of constant k = 8.00 N/m. What is the frequency of the oscillations
Explain by how much upward force does each support exert on the beam? (Enter your answer for support 1 first, followed by your answer for support 2.)
Two point charges are located on the axis as follows: charge = -2.00 at = -0.500 , and charge = 2.80 at the origin ( = 0). What is the magnitude of the net force exerted by these two charges on a third charge = 9.00 located at = 0.250?
An open tank is filled with gasoline to a height of 4.5 m from the bottom. A hole of diameter 2.4cm is at the bottom of the tank. How fast is the seepage? How many cubic meters of gasoline is wasted per second?
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