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A box with mass M=70kg is tired to a rubber rope and dropped off a bridge which is at height H=100m above the ground. The rope has non-stretch length l=10m and cross-section area A=60cm^2. If the lowest height that box reaches is h=10m (before it is pulled back up by the elastic rope). Find the young modulus of the rubber y=?Gravitational acceleration is g=10m/s^2
Monochromatic light falls on a slit that is 2.60*10-3 mm wide. If the angle between the first darkfringes on either side of the central maximum is 35.0degrees(dark fringe to dark fringe), what is the wavelength of the light used
A container of water begins with a heat capacity of 500J/K (constant) and a temperature of 70?C. What is the change in the entropy of the water
Find the angular velocity of the earth as it spins on its axis and the tangential velocity of an object at the equator and one at the University of West Florida in Pensacola
A beam contains 8.9x106 doubly charged positiveions per cubic centimeter, all of which are moving north with aspeed of 1.3x105 m/s. What is the magnitude of the current density?
A softball of mass 0.220kg that is moving with a speed of 8.5m/s collides head-on and elastically with another ball initially at rest. find the velocity of the target ball after the collision
Exploding shoes. The rain-soaked shoes of a person may explode if ground current from nearby lightning vaporizes the water. The sudden conversion of water to water vapor causes adramatic expansion that can rip apart shoes. Water has density 1000kg..
In an LC circuit where L = 12 mH and C = 30 μF with anelectromagnetic oscillation the current amplitude is 2.5mA. find the natural frequency and the period of the oscillation
A person holds a ladder horizontally at its center. Treating the ladder as a uniform rod of length 3.25 m and a mass 8.40 kg, find the torque the person must exert on the ladder to give it an angular acceleration of 0.322 radians/seconds squared.
A mass m1 = 5.8 kg rests on a frictionless table and connected by a mass less string to another mass m2 = 4.5 kg. What is the NET work done on mass
an infinitely -long uniformly charged line of charge with linear charge density n0.1 cm lies a distance d0.068m from
An electrically charged bullet of mass 0.010 kg leaves thebarrel of a gun traveling parallel to the ground and perpendicularto the Earth's magnetic field at 1.400e+3 m/s. Intheory, what charge could the bullet carry in order to remain at aconstant..
A certain electric extension cord has a resistance of 4.96 ?. Suppose it is replaced by an extension cord made of the same material. What is the resistance of the new cord
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