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Solve the all parts of given question in detail:
Question: An airplane propeller is 2.00m in length (from tip to tip) with mass 130kg and is rotating at 3000rpm (rev/min) about an axis through its center. You can model the propeller as a slender rod.
Question I: what is its rotational kinetic energy in J?
Question II: Suppose that, due to weight constraints, you had to reduce the propeller's mass to 75.0% of its original mass, but you still needed to keep the same size and kinetic energy. What would its angular speed have to be, in rpm?
I need expert help to solve the above question.
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.50 × 10-10 T. How much energy does this wave carry through the window during a 30 s phone call
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 58.05 diopters, what is the height of the image on the retina
to move a large crate across a rough floor you push on it with a force f at an angle of 21deg below the horizontal.
A block of mass M is attached to a spring (spring constant k) which is attached to a wall. what is the amplitude of the resulting simple harmonic motion
A converging lens of focal length 20 cm is used to form a real image 1.0 m away from the lens. How far from the lens is the object
A pendulum of length 1.00 m swings in a vertical plane. Whenthe pendulum is in the two horizontal positions Θ =90 andΘ =270, its speed is 5.00 m/s. find the magnitude and direction of the total acceleration
An archer shoots an arrow with a velocity of47.5m/s at an angle of50.5° with the horizontal. What is the initial speed of the apple
Material found with a mummy in the arid highlands of southern Peru has a _6^14 text(C) activity per gram of carbon that is 74.0% of the activity percent initially
suppose a star the size of our sun but of mass 8.0 times as great were rotating at a speed of 1.0 revolution every 11
Estimate the linear separation (in kilometres) of two objects at a distance of 7.7 x 106 km that can just be resolved with an observer on Earth (a) using the naked eye and (b) using a telescope with a 4.5-m diameter mirror.
in electronic equipment wires that carry equal but opposite currents are often twisted together to reduce their
Use the worked example above to help you solve this problem. A skier starts from rest at the top of a frictionless incline of height 20.0 m, Find the skier's speed at the bottom
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