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A 52.4-gram ball is thrown from the ground into the air, with an initial speed of 16.3 m/s at an angle of 27.4o above the horizontal, Find the values of the kinetic energy of the ball initially and just before it hits the ground? Determine the corresponding values of the momentum (direction and magnitude) and the change in momentum, Show that the change in momentum is equal to the weight of the ball multiplied by the time of flight, and thereby determine the time of flight.
a transformer has N^1 =350 turns and N^2 =2000 turns. what voltage is developed across the secondary coil?
Damping is negligible for a 0.125-kg object hanging from a light, 6.30-N/m spring. Find a lower frequency and a higher frequency
A cube with the side length 1.53 meters of solid styrofoam is completely submerged in fresh water such that the top of the styrofoam block is parallel to the water surface and is 2.55 meters beneath the surface
The maximum induced emf in a generator rotating at230 rpm is 40 V. How fast must the rotor of the generatorrotate if it is to generate a maximum induced emf of58 V?
A constant force is applied to an object, causing the object to accelerate at 6.0 m/s^2? What will the acceleration be if the force is doubled
A 1000 kg roller coaster starts from rest at height H= 25 m above the bottom of a 14 m diameter loop. What is the downward force of the track on the car
A heat engine has a maximum possible efficiency of 0.800. If it operates between a deep lake with a constant temperature of 287.0 k and a hot reservoir, what is the temperature of the hot reservoir?
Calculate the direction of the average force on the ball during the contact . The magnitude of the average force is 4700N
If wind blows at 25 m/s over a house, what is the net force on the roof if its area is 214 m2 and is flat
To investigate the structure of extremely small objects, such as viruses, the wavelength of the probing wave should be about one-tenth the size of the object for sharp images. If you use light of this wavelength, what would be the energy (in eV) of..
The unit of horsepower was defined by considering the power output of a typical horse. Working-horse guidelines in the 1900s called for them to pull with a force equal to 10% of their body weight at a speed of 3.0 {\rm mph}. Part A For a typical work..
q1. a woman rides a carnival ferris wheel at radius 13 m completing 4.0 turns about its horizontal axis every minute.
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