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Suppose that you have a certain spring to which you add weights. The spring does not stretch until you add 10 N, but it then stretch 10 cm for every 100 grams that you add. What is the equilibrium weight W0 of this scale, in newtons? The equilibrium weight of this spring is _________ N. What is the spring constant of this scale, in newtons/meter? The spring constant for this spring is __________ N/m.
Ice at 0 degrees Celsius and at a pressure of 1 atmosphere has a density of 916.23 kg m^-3 while water under these conditions has a density of 999.84 kg m^-3
Suppose a block of mass M is sliding down an inclined plane which makes an angle t with the horizontal. What is the work done by friction as the block travels a distance d along the plane
What is the average speed in m/s of nitrous oxide molecule when the temp is 300K? The molar mass of oxygen is 0.032 kg/mol
The nucleus of a helium atom contains two protons. In a simple model of this nucleus, What is the electric potential energy of the two protons
A ray of light passes from air during dense flint glass and then back into air. The angle of incidence on the first glass surface is 80.0°. The thickness of the glass is 8.00 mm; its front and back surfaces are parallel. How far is the ray displaced ..
sheena can row a boat at 2.95 mih in still water. she needs to cross a river that is 1.17 mi wide with a current
a string of mass 0.030 kg and length 5.00 m is attached to the wall on one side. on the other side a 2.00 kg mass is
A particle leaves the origin with a speed of1 × 106 m/s at 30? to the x axis. It moves in a constant electric field E = Eyˆj. Find Ey such that the particle will cross the x axis at x = 2.5 cm if the particle is an electron.
The wave function of an electron is given below. psi_2(x)=sqrt(2/L)sin((2pix)/L Calculate the probability of finding the electron between x = 0 and x = L/7
Two horizontal forces, 218 N and 157 N, are exerted in opposite directions on a crate. What is the net horizontal force on the create? Be sure to indicate the direction of the net force. (Assume that the 218 N forces are in the positive direction.)
A loudspeaker of mass 25.0 is suspended the distance of = 2.40 below ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 2.50. What is the tension in each of cables.
A rope of negligible mass is wrapped around a 225-kg solid cylinder of radius 0.400 m. The cylinder is suspended several meters off the ground by its axis oriented horizontally, and turns on that axis without friction.
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