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How does media coverage influence our reactions to events? Do you think riots can be caused by media coverage of certain events? How?
A 60.5 -kg runner has a speed of 4.60 m/s at one instant during a long-distance event. what is the runner's kinetic energy at this instant
The density of ice is 920 kg/m3, and that of sea water is 1030 kg/m3. Find what fraction of the total volume of an ice berg is exposed
An oxygen bubble at the bottom of a lake 20. m deep has a volume of 1.20 cm^3, calculate the initial pressure inside the bubble at the bottom of the lake
The angles with respect to the vertical are Q=10.5°, and T=23.5°. State if true, false, or can not tell. The mass of W can be less than that of Z. The charge on W can be positive and that on Z negative.
He pulls on a rope that is fastened to the platform and runs over a pulley on the ceiling. Illustrate with what force does he have to pull in order to give himself and the platform an upward acceleration of 1.0 m/s^2?
ice of mass 15.0 kg at 0.00deg c is placed in an ice chest. the ice chest has 2.30 cm thick walls of thermal
Light of wavelength 300nm strikes a metal whose work function is 2.2eV. What is the shortest de Broglie wavelength for electrons that are produced as photoelectrons?
Two particles of masses m1 and m2 are joined by a massless spring of natural length L and force constant k. Find the positions of the two masses at any subsequent time t
A block is connected between two springs on a frictionless, horizontally level track. compute what is the mass of the block
A 50.0-kg child stands at the rim of a merry-go-round of radius 2.10 m, rotating with an angular speed of 3.60 rad/s. What is the child's centripetal acceleration
q1. the potential at location a is 419 v. a positively charged particle is released there from rest and arrives at
A rock is thrown vertically upward with a speed of 17.0 m/s from the roof of a building that is 70.0 m above the ground. Assume free fall. What is the speed of the rock just before it strikes the ground
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