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When a 2.5 kilogram object is hung vertically on a certain light spring described in Hooke's law, the spring stretches 2.76cm.
(a) Determine the force constant of the spring?
(b) If the 2.5 kilogram object is removed, find how far will the spring stretch if a 125 kilogram block is hung on it?
(c) Determine how much work must an external agent do to the same spring 8.00 cm from its unstrehed position?
In her bathroom, Mindy has an overhead heater that consists of a coiled wire made of nichrome that gets hot when turned on. When the heater is first turned on, it has not yet heated up, so it is operating at 20° C. What is the current through the wi..
A ball is released from rest and rolls down an incline plane, requiring 4 sec to cover a distance of 100cm down the plane, How far did it travel vertically while rolling down the olane
q1. a 1190-n uniform beam is attached to the vertical wall at one end and is supported by a cable at the other end. a
A child whose weight is 270 N slidesdown a 6.2 m playground slide that makesan angle of 20° with the horizontal. If she starts at the top with a speed of 4.97 m/s, what is her speed at the bottom
An object weighing 347 N in air is immersed in water after being tied to a string connected to a balance. Calculate the density of the object
A 140 kg hockey player skating at -12 m/s runs into the back of a referee that weighs 70 kg and is traveling in the same direction but at only -6 m/s. what will the velocity of the referee be after the collision
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.60 m/s at an angle of 25.0° below the horizontal. Find the height from which the ball was thrown
A 5.00 kg ball, moving to the right at a velocity of +2.00 m/s on afriction less table, collides head-onwith a 7.50 kg ball moving with a velocity of -1.00 m/s. Find the final velocities of the ball if the collision is a) elastic, and b) completel..
A 2.0 kg tether ball is attached to a vertical pole by a 1.5 m long rope. The ball is swung around the pole at an angle of 60 degrees from vertical. how does the tension and angle of the rope change
A woman on a bridge 97.0 m highsees a raft floating at a constant speed on the river below. Shedrops a stone from rest in an attempt to hit the raft. Find the speed of the raft
Monochromatic light falling on two slits 1.5×10?2mm apart produces the fifth-order fringe at an 8.9?angle.
Consider a rectangular loop of wire 6.6cm by 8.5cm in a uniform magnetic field of magnitude 2.0T . The loop is rotated from a position of zero magnetic flux to a position of maximum flux in 22ms .
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