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A lawn mower has a flat, rod-shaped steel blade that rotates about its center. The mass of the blade is 0.65 kg and its length is 0.55 m . What is the rotational energy of the blade at its operating angular speed of 3480 rpm?
A wheel of diameter 24.0 cm is constrained to rotate in the xy plane, about the z axis, which passes through its center. What is the torque about the rotation axis at this instant
A car battery stores about 3.00 MJ of energy. If all this energy were used to generate a uniform electric field of 27.0 kV/m, what volume would it occupy.
A skier leaves the starting gate at the top of a ski jump with an initial speed of 4 m/s. the starting position is 120 m higher than the end of the ramp, which is 3 m above the snow. FIND THE FINAL SPEED of the skier if he lands 145 m down the 20 deg..
A spherical mirror has a focal length of +10cm. Find the location and then describe the miage for an object for an object distance of 25cm. How fast does the image of the object move
A block of wood has a density of 0.50 g/cm3 and a mass of 1.500 kg. What is the volume of oil that the wood displaces
You do 220 J of work pulling your sister back on a swing, whose chain is 5.00 m long, until the swing makes an angle of 30.0 degrees with the vertical, What is your sisters mass
A square plate is 2.4 × 10^-2 m thick, measures 4.5 × 10^-2 m on a side, and has a mass of 7.2 × 10^-2 kg. determine the maximum possible amount of shear strain
A long solenoid has 130 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 2.80 cm perpendicular to the solenoid axis. Find the current i in the solenoid
One piece of 50 g ice at 0C is added to m grams of water at 25C. The system is insulated from outside and the exchange of heat is limited to ice and water only. find the total change in entropy
The coil wand pendulum starts swinging with an angle of 30 degrees with the vertical. After it passes through the magnetic gap, What is the energy lost by the pendulum
A trapeze artist performs an aerial maneuver. While in a tucked position, what is her rotational speed
A muon is created at the top of Mount Kamet (height 7,800 m) and travels at constant speed to sea level, what is the height of Mount Kamet
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