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1) Compute the period of a 0.123-nmX-ray.
2) An object is placed halfway among a concave mirror and its focal point. Discover the resulting magnification.
3) A 3-cm-tall object is located 8 cm in front of a concave mirror that has a 20-cm radius of curvature. Compute the resulting image height.
4) What is the minimum time it will take light to refract during a pane of glass 1 cm thick?
5) A concave mirror has a focal length of 17.0 cm. If it is forming an image 36.0 cm in front of the mirror, what is the magnification?
Two infinitely long straight and parallel wires carry current in opposite directions of 100 A. The wires are a distance 0.40 m apart and are aligned with the x-axis and lying in the x-y plane with the origin halfway between the two wires
A small flywheel starts from rest and spins up to speed in 10 seconds. During this time it completes a total of 300 revolutions. what is the angular acceleration of the wheel
Donald Duck and his nephews manage to sink Uncle Scrooge's yacht (m = 4735 kg), which is made of steel (? = 7810 kg/m3). How many balls are required to float the ship
A small drop of oil is suspended motionless in the air by a uniform electric field that is directed upward and has a magnitude of N/C, What is the mass of the drop
A pendulum is made up of a 2.0 kilogram mass suspended on a thin aluminum wire. Compute the length of the pendulum wire at the equator
When a large star becomes a supernova, its core may be compressed so tightly that it becomes a neutron star, what is the speed of a particle (in km/s) on the star's equator
Two slits separated by a distance of d = 0.13mm are located at a distance of D = 710mm from a screen. What is the pathlength difference between the two waves from the two slits at the first (m=1) maximum on the screen
Two banked curves have the same radius. Curve A is banked at an angle of 11°, and curve B is banked at an angle of 19°. At what speed can this car travel around curve B without relying on friction
Find a Compact Disk. find a white light source and see if you can convince yourself that you are looking at the reflection of the light source as seen in the first order m = 1 maxima, estimate the spacing between the tracks of a CD
A spherical ball of charge has radius R and total charge Q. The electric field strength inside the ball(r?R) is E(r)=Emax(r4/R4). Find an expression for the volume charge density ?(r) inside the ball as a function of r
A cube of ice is taken from the freezer at -8.7 C and placed in a 111 g aluminum calorimeter filled with 315 g of water at room temperature of 20.0 C, What was the mass of the ice cube
You are designing an elevator for a hospital. The force exerted on a passenger by the floor of the elevator is not to exceed 1.57 times the passenger's weight. What is the maximum speed of the elevator
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