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Suppose that Superman wants to stop Earth so it does not rotate. He exerts a force on Earth at Earth's equator tangent to its surface for a time interval of 1 year. The mass of Earth is 5.98x1024kg , the radius is 6.37x106m . Assume that Earth is a solid sphere with its mass distributed uniformly.
What magnitude force must he exert to stop Earth's rotation?
Individual assignment: McFarlane Case, p. 65 (Manning & Curtis): "Part One Video Case, Toying with Success: The McFarlane Companies"After reading the case, answer "Questions for Discussion" 1 and 2, providing evidence for points you make.Then, includ..
An electron with kinetic energy 1.56 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 23.0 cm. Find the frequency of circling
Migrating geese tend to travel in straight-line paths at approximately constant speed. How far is the goose from its original position
A 0.20 {rm kg} rock is thrown vertically upward from the top of a cliff that is 31.0 {rm m} high. While it hits the ground at the base of the cliff, the rock has the speed of 31 {rm m/s}. Assume that air resistance can be ignored; find the initial sp..
A proton is placed at the origin of any y coordinate system. The proton is floating because an electron is fixed on the y-axis, How far away from the proton in the electron
the temperature of a body is increased from -173 c to 357 c. what is the ratio of energies emitted by the body per
A block of mass m1 = 17 kg slides along a horizontal surface (with friction, μk = 0.49) a distance d = 2.45 m before striking a second block of mass m2 = 7.5 kg. How far does block 2 travel, d2, in meters, before coming to rest
If an electron makes a transition from the n = 4 Bohr orbit to the n = 3 orbit, determine the wavelength of the photon created in the process
A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. The antenna broadcasts radio signals at the resonant frequency of the tank circuit. Evaluate the maximum inductance of the tank circuit
Suppose the decay constant of radioactive substance A is twice the decay constant of radioactive substance B. what's the half-life of substance A
An engineer is given the job of designing the water system for a tall building. He decides to locate the pumps at ground level and feed the entire building from there. what must the pressure be at pump level
A block (m=.75kg) is released from the top of a frictionless inclineed plane that has a height of 1.5m, How much energy was lost in the collision
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