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An electron with electric charge of 1.6 10-19 C falls through a potential difference of 29 kV in the vacuum of an X-ray tube. What is the kinetic energy of the electron, assuming it started from rest and that there is no loss of energy to friction? (Note: 1 volt = 1 joule/coulomb.)
A girl and boy go on a seesaw. The boy goes on one end and the girl goes on the other end. Calculate the distance between the girl and the pivot
One solenoid is centered inside another. The outer one has a length of 50.0 cm and contains 6750 coils, while the coaxial inner solenoid is 3.0 cm long and 0.120 cm in diameter, Find the emf induced in the inner solenoid
Galaxies form by gravitational collapse of regions that are denser than average. Noting that the present day average mass density of the universe is ρ = 3 × 10-30 g/cm-3, estimate how long it takes for a galaxy to collapse.
Consider a call option for an asset with the following parameters • Current spot price is $50 • Option expires in 12 months • Each month the asset could increase in value by 3% or decrease in value by inverse • The risk free rate is 25 basis point..
A 2 kg rock is released from rest at a height of 29 m. neglect air resistance and determine the kinetic energy, gravitational potential energy, and total mechanical energy at each of the following heights: 20m; 15m; 5m; 9m.
Why did you have such a large percent difference in the resistance of the lamp filament with the two different applied voltages? What physical condition of a conductor must remain constant for Ohm's law to apply?
A ladybug starts at the center of a 10.0in -diameter turntable and crawls in a straight radial line to the edge. Find the direction of the ladybug's displacement vector
A coin is placed 8 cm in front of a concave morror. T he mirror produces a real imege that has the diameter 4 times larger than that of the coin. What is the image distance.
A 0.105-kg hockey puck moving at 24 m/s is caught and held by a 75-kg goalie at rest. With what speed does the goalie slide on the ice?
A group of particles is traveling in a magnetic field of unknown magnitude and direction. What is the direction of this the magnetic force
It is common to see birds of preyrising upward on thermals. The paths they take may be spiral-like. Find the speed of the bird relative to the ground
Flint glass has a refractive index of 1.645 for blue light and 1.629 for red light. When viewing an image these colors will not focus at the same location due to this effect. Find the focal length of both the blue and red light
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