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A helicopter blade spins at 115 revolutions per minute. Its tip is 7.00 m from the center of rotation.
(a) Calculate the average speed of the blade tip in the helicopter's frame of reference.
(b) What is its average velocity over one revolution?
A 92-keV x-ray is Compton-scattered through an angle of 10o. What is the energy of the x-ray after scattering
A Carnot engine has an efficiency of 18.2%. It operates between constant-temperature reservoirs differing in temperature by 138 C °. determine the temperature of the cold reservoir
A 13cm -diameter cylinder contains argon gas at 10 atm pressure and a temperature of 60?C. What is the final length of the cylinder
For silver electrode (hint: click just below the word "cesium"), what is the highest energy of an electron ejected by light of 250 nm.
Two capacitors (2,0 uF and 4,0 uF) are connected in series across 300-V potential difference. Calculate the total stored energy in the system
Two steel wires are stretched under the same tension. The first wire has a diameter of 0.485 mm, what is the speed of waves traveling along the second wire
A concave mirror has a radius of curvature of 34.0cm. Find the height of the image of the insect, Find the location of the image of the insect
A sledge loaded with bricks has a total mass of 17.0 kg and is pulled at constant speed by a rope inclined at 19.9° above the horizontal. What is the mechanical energy lost due to friction
A baseball has a velocity of 43.6 m/s (97.5 mi/h), directed horizontally, as it is released by a pitcher. Calculate the ball's instantaneous acceleration just before it is released
What is the magnitude of the acceleration of a modified Atwood machine if the mass of the cart is 3 kg and the hanging mass is 4 kg? (Use g = 9.8 m/s2. Express your answer to one decimal point.)
What is an actual mechanical advantage of the system
A solid disk of radius R and mass 2.72 kg is spinning at angular velocity 63.9 rpm about a vertical axis. What is the mass of the second disk
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