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A 2kg vertically hanging object was connected via a pulley (I=20kg sq meter, 0.6 meter diameter) to another 3kg object sitting on a 40-degree smooth incline. Find the angular acceleration of the pulley after the objects moved 5 meters using energy conservation method.
A particle moves so that its position as a function of time is r(t)= i hat + 4(t) ^2 j hat + (t)k hat, What is the shape of the particle's trajectory
a magnetic field increases from 0 to 0.12 t in 1.8 s. how many turns of wire are needed in a circular coil 14 cm in
Find how the acceleration of gravity
a cessna aircraft has a lift-off speed of 120 kmh.a what minimum constant acceleration does the aircraft require if the
two identical blocks are stacked one on top of the other. the bottom block is free to slide across a frictionless surface. What is the maximum horizontal force that can be applied to the lower block without the upper block slipping
A beam of electrons is incident on two slits separated with a distance of2.0×10-6 m. The first-order bright fringes appear on a distant screen at an angle of 0.021 degrees from the central interference maximum.
A roller-coaster car has a mass of 506 kg when fully loaded with passengers. If the vehicle has a speed of 20.5 m/s at point , what is the force exerted by the track on the car at this point
1a what is the magnitude and direction of the electric field a distance of 5times10-7m from an electron?bhow much
It is desired to magnify readingmaterial by a factor of 2.5X when a book is placed 8cm behind alens. what type of lens is needed
He-Ne lasers are often used in physics demonstrations. They produce light of wavelength 633 nm and a power of 0.500 mW spread over a cylindrical beam 1.30 mm in diameter, What is the maximum value of the electric field
The straight lines below represent parallel equipotential planes. Which region has the highest electric field strength
A projectile is fired from ground level with a velocity of 500 m/s at 30° to the horizontal. Calculate its horizontal range, the greatest height it reaches, and the time taken to rise to that height.
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