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The magnetic field of the earth at a certain location is directed vertically downward and has a magnitude of 50.0 µT. A proton is moving horizontally toward the west in this field by a speed of 5.70*106 m/s. What is the direction and magnitude of the magnetic force the field exerts on the proton?
A spring has a spring stiffness constant , k, of 440 N/m. How much must the spring be stretched to store 25 J of potential energy. Please tell me the formula and how you arrived at your answer.
Two circular disks spaced 0.50 mm apart form a parallel-plate capacitor. What are the diameters of the disks
A wedge of mass M and angle ? is placed on a flat frictionless surface. A crate of mass m is placed on the wedge at height h and starts sliding down the wedge without friction. Find the acceleration of the crate and the wedge relative to the gr..
a metal surface with a work function of w13ev is illuminated with a monochromatic ultraviolet light of frequency v1.
White light is shone on a very thin layer of alcohol (n = 1.36), and above the alcohol layer, interference maxima for two wavelengths (and no other in between) are seen: one violet wavelength of 410 nm, and one red wavelength of 670 nm. What is the t..
four point charges q are fixed to the four corners of a square that is 10.2 cm on a side. an electron is suspended
A weight of mass m1 is on africtionless ramp which makes angle theta with respect to thehorizontal. how long will it take to reach the horizontal
A tiny motor mounted on a toy car operates across two D-cells inseries. If it draws 0.05 A, how much power does it drain from the battery pack
many people mistakenly believe that astronauts that orbit the earth are above gravity. calculate the acceleration due
During a flare-up from a sunspot, X-rays (electromagnetic waves)are emitted. If the distance between the sun and the earth is 1.50x 1011 m, how long (in minutes) does it take for theX-rays to reach the earth?
Light of wavelength 655 nm is used to illuminate normally two glass plates 20 cm in length that touch at one end, How many bright fringes appear along the total length of the plates
the earths magnetic dipole moment is 81022 am2.a. what is the magnetic field strength on the surface of the earth at
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