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A 10kg block is attached to a light cord that is wrapped around the pulley of an electric motor. What is the power output of the motor when it is pulling the block upward with an instantaneous speed of 3m/s and an upward acceleration of 2m/s^2
design a crane that will sit on a boat and drop a 1meter by 1 meter by 1 meter box to pick up 10cm steel balls. we need
The atomic mass of copper is 64 g/mole, and the density of copper is 8.9 g/cm3.
What is the wavelength of the peak of the blackbody radiation curve for something at 3,000 kelvins (the temperature of the filament of a light bulb)
A jewel smith wishing to buff a finished piece of jewelry attaches a buffing disk to his drill. Determine the tangential speed of the rim of the disk
A golf ball of mass 0.050 kg is at rest on thetee and has a velocity of 102 m/simmediately after being struck. If the club and ball were in contact for0.81 mili second, what is the average forceexerted on the ball?
Three resistors of 40 ohms, 60 ohms and 100 ohms connected on a close circuit with 200 Volt source (assume ideal circuit). With Resistors connected in Parallel: determine the voltage drop across each resistor
A square wire carrying a current of 5 A has sides of 10 cm and is placed in the yz plane. The torque on the square is
Two point charges have a total charge magnitude of 576 µC. When placed 1.19 m apart, the force each exerts on the other is 20.2 N and is repulsive. What is the charge magnitude on each? Please include solution.
A point source emits sound waves with a power output of 130 W. At what distance will the decibel reading be 120 dB, which is noise level of a loud indoorrock concert?
A small ball rolls off the roof edge of a building with a horizontal speed of 2.3m/s. The ball hits the ground a distance of 15.8m from the building's base. Calculate the following: A) the height of the building and the velocity of the ball prior to ..
In a certain cyclotron a proton moves in a circle of radius0.800 m. The magnitude of the magneticfield is 1.10 T. What is the kinetic energy of the proton
Two resistors are connected in series to a battery with an emf of 12 V. The voltage across the first resistor is 2.9V and the current through the second resistor is 0.13A. Find the resistance of the second resistor
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