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How much work does a person do if they push an object with 12.0 N for 8.0 m in Joules and kcal?
A baseball pitcher throws a 44 m/s fastball. The baseball bat reverses the ball's velocity and it leaves the bat at 56 m/s. What was the average force on the 0.145 kg baseball through the contact time of 15 ms?
At t = 2.95 second a point on the rim of a 0.195 meter radius wheel has a tangential speed of 48.5 m/s as the wheel slows down with a tangential acceleration of constant magnitude 13.0 m/s2. Find through what angle did the wheel turn between t = 0 ..
The position function x(t) of a particle moving along an x axis is x = 4.0 - 4.5t2, with x in meters and t in seconds. 1) At what negative time does the particle pass through the origin? 2) At what positive time does the particle pass through the ..
An iron tower in is 317 meters tall on a cold day (T = -9.9 degrees Celsius). What is its height of the tower on a hot day
A cubical piece of heat-shield-tile from the space shuttle measures 0.12 m on a side and has a thermal conductivity of 0.065 J/(s·m·C°). The outer surface of the tile is heated to a temperature of 1110°C, while the inner surface is maintained at a..
Lab Carbon Blank. The following data were provided by L. A. Currie of the National Institute of Standards and Technology (NIST).
Light of a wavelength 560 nm illuminates a single slit placed 60 cm from a screen. What is the slit width
A generating station is producing 1.20 x 106 W of power that is to be sent to a town placed 8.0 kilometer away. Determine how much power is now lost in heating the wires
A block of mass m1 = 4.00 kg on a frictionless inclined plane of angle 30.0° is connected by a cord over a massless, What is the magnitude of the tension in the cord
A torque of 11Nm is applied to a heavy wheel whose moment of inertia is 34 kgm2. What is the angular acceleration of the wheel
What is the coefficient of performance of a refrigerator that operates with Carnot efficiency between temperatures -3.00°C and +22.0°C
A 5.6 kg block hangs from a spring with spring constant 1840 N/m. The block is pulled down 4.1cm from the equilibrium position, What is the total mechanical energy of the motion
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