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A certain radio station broadcasts at 101.7 megahertz. This is the frequency of oscillation of electrons in the transmitting antenna producing the radio wave. Find the period of the electrons' motion.
A solid uniform marble and a block of ice, each with the same mass, start from rest at the same height above the bottom of a hill and move down it. Find the speed of each of these objects when it reaches the bottom of the hill
A projectile is fired from ground level at an angle above the horizontal on an airless planet where g = 10.0 m/s2. The initial x and y components of its velocity are 86.6 m/s and 50.0 m/s respectively. How long after firing does it take before the..
Suppose that the amount of heat removed when 1.6 kg of water freezes at 0.0 oC were removed from ethyl alcohol at its freezing/melting point of -114.4 oC. How many kilograms of ethyl alcohol would freeze?
A proton and an Au11+ are moving with equal velocities perpendicular to a uniform magneticfield. The Au11+ has 11times the charge as the proton and has 197times its mass. The ratio of the acceleration of theAu11+ to that of the proton is what?
Two long straight wires are parallel and carry currents of I1 = 6.20 A and I2 = 4.30 A in opposite directions. Determine the magnitude of the force exerted by one wire on the other
A long slender bar is made from an unknown material. The length of the bar is 0.752 m, its cross-sectional area is 1.48 × 10-4 m2, Find the Young's modulus of the unknown material
A flywheel with a diameter of 0.877 m is rotating at an angular speed of 146 rev/min. What is the angular speed of the flywheel in radians per second
The earth orbits the sun in an approximately circular orbit of radius 1.496x10^11 m, Use these data to determine the mass of the sun
A champion archer hits a bullseye in a target mounted on a wall a distance L away and situated at a height h above his bow. Deduce the equation between the speed (at which the arrow left his bow), the arrow's initial angle θ with the horizontal, th..
A block rests on a horizontal, frictionless surface. A string is attached to the block, and is pulled with a force of 44.0 N at an angle θ above the horizontal. After the block is pulled through a distance of 17.0 m its speed is v = 2.10 m/s, and 55...
A person with a remote mountain cabin plans to install her own hydroelectric plant. A nearby stream is 3.00 m wide and 0.500 m deep. Water flows at 1.05 m/s over the brink of a waterfall 5.10 m high. The manufacturer promises only 25.0% efficiency..
Charge 1 is -3x10^-6C and has a velocity of 9x10^6 m/s while charge 2 is 8x10^-6C, What is the total magnetic field at the origin
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