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An airplane propeller is 3.08 in length (from tip to tip) and has a mass of 142 . When the airplane's engine is first started, it applies a constant torque of 1850 to the propeller, which starts from rest. What is the angular acceleration of the propeller? Treat the propeller as a slender rod. What is the propeller's angular speed after making 5.00 ? How much work is done by the engine during the first 5.00 ? What is the average power output of the engine during the first 5.00 ? What is the instantaneous power output of the motor at the instant that the propeller has turned through 5.00?
For the motion along the inclined plane, should the maximum kinetic energy of the cart be equal to the potential energy of the compressed spring (under ideal conditions)?
The ratio of the average acceleration values is a1/a2 = 1.24. Find out the velocity of the car at the end of the initial ten-second interval.
Three resistors, R1 = 30? , R2 = 71? , and R3=R, are connected in parallel with a 12Vbattery, Find the value of resistance R and currenrt through each resistor
If the velocity of a 3.0 kg body changes from v1= (3.0î , 5.0j) m/s to v2= (0î, 7.0j) m/s in a time interval of 2.0s. What is the impulse delivered to the body
The sun and solar system actually are not at rest in our milky way galaxy. what would be the mass of the galaxy
A brass plate with a thickness of 1.00 cm is placed over a copper plate with a thickness of 2.00 cm, What is the effective coefficient of thermal conductivity for the brass - copper layer
Water has a mass per mole of 18g/mol, and each water molecule (H2O) has 10 electrons.
A 0.157kg ball is thrown straight up from 1.94m above the ground. Its initial vertical speed is 9.60 m/s. A short time later, it hits the ground. What is the total work done by the force of gravity during that time.
A copper vat is 10-m long at room temperature (20°C). How much longer is it as it contains boiling water at 1 atm pressure.
A small insect viewed through a convex lens is 1.6 cm from the lens and appears twice its actual size. What is the focal length of the lens
Derive the 5 volt reference from a 5 volt source. Apply a 1 KHz sine wave. Vary the amplitude of the input voltage and sketch the input and output waveforms.
The natural length of the spring AP is twice that of spring PB. Spring AP has a stiffness of 118 N/m and the stiffness of spring PB is twice that of spring AP. The distance AB between the supports is equal to the natural length of the spring AP
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