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If the phase angle for a block-spring system in SHM is π/8 rad and the block’s position is given x = xm cos(ωt + ?),what is the ratio of the kinetic energy to the potential energy at time t = 0?
What is the potential energy in terms of position? What is the speed under the stated conditions? What is the position under the stated conditions? What is the kinetic energy in terms of speed?
A 66 {rm kg} skier speeds down a trail, as shown in the figure . The surface is smooth and inclined at the angle of 22 ^circ with the horizontal. Find the magnitude of the net force acting on the skier.
two small plastic balls hang from the threads of negligible mass. each ball has a mass of 0.14 g and a charge of
A particle moves from Xi = 0 to Xf = 5.0 meter while being acted upon by a single force F = 3X^2 directed along the X axis. Calculate the change in the kinetic energy during this motion
a ball is thrown straight upward and rises to a maximum height of 12.0m above its launch point. at what height above
question the image behind a convex mirror radius of curvature 61.0 cm is located 19.0 cm from the mirror. a where is
Two isotropic point sources of light (S1 andS2) are separated by a distance d = 250μm along a yaxis and emit in phase at wavelength 841nm and at the sameamplitude. A light detector is located at point P at coordinatexp on the x axis.
A slide projector needs to create a 99.0 -high image of a 2.00 -tall slide. The screen is 290 from the slide. What focal length does the lens need? Assume that it is a thin lens.
Aaron (mass 60 kg) catches his running cat (mass 5 kg) moving horizontally at 1.5 m/s. What is the speed of Aaron and his cat after the catch
A person with a near-point distance of 25 cm finds that a magnifying glass gives an angular magnification that is 1.5 times larger, What is the focal length of the magnifying glass
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 3.40 x 105 N. What is the work done on the jet by the catapult
What is the direction of the force that the unknown charge exerts on the charge of magnitude 0.580uC?
From the top of a mountain a hiker looks at the next mountain top in the distance and notes the compass direction of the peak. how far has the hiker walked
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