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An arrow is shot straight up from a pit 12 m below ground at 38 m/s.
a. Find its max height above ground.
b. At what times is it at ground level?
Two metal spheres, each of radius 1.0 cm, have a center-to-center separation of 2.0 m. Sphere 1 has charge +2.90 10-8 C. Calculate the potential at the point halfway between the centers
A proton accelerates from rest in a uniform electric field of 524 N/C. What is the magnitude of the acceleration of the proton
A solid cylinder (radius = 0.200 m, height = 0.170 m) has a mass of 19.8 kg. This cylinder is floating in water. How much of the height of the cylinder is in the oil
A nichrome toaster wire, initially at room temperature, carries 2.72A immediately after it's turned on. What's the temperature of the nichrome then
A 92-keV x-ray is Compton-scattered through an angle of 10o. What is the energy of the x-ray after scattering
A battery has an emf and an internal resistance . When the battery is connected to a 25 ohm resistor, the current through the battery is 0.65 A. Find the battery's internal resistance
An electric dipole has opposite charges of 5.0x10^-15 C separated by a distance of .40mm. Determine the magnitude of the torque exerted on the dipole by the electric field
The quantity of charge q (in coulombs) that has passed through a surface of area 1.90 cm2 varies with time according to the equation q = 8t3 + 8t + 6, What is the value of the current density
Two charges, -2.2 microCoulombs and -4.8 microcoulombs, are located at (-0.65m, 0) and (0.65,0), respectively. compute the location of the point where the electric field is zero
A 57.4 g sample of a conducting material is all that is available. The resistivity of the material is 1.05 E-7 and the density is 6.09 g/cm^3. What will the diameter of the wire be
A converging lens, which has a focal length equal to 8.2 cm, is separated by 32.5 cm from a second lens. Find the position of the final image using both a ray diagram and the thin-lens equation
q1. the critical angle for a special type of glass in air is 41.8. the index of refraction for water is 1.33. what is
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