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By what percentage does the density of a bowling ball change (assuming it is a uniform sphere) when it is taken from room temperature (68F ) into the cold night air in Nome, Alaska (-40F ). Assume the ball is made out of a material that has a linear coefficient of expansion of 7.68×10?5 C
The bullet becomes embedded in the block. if the coefficient of kinetic friction between the block and surface is .65 what was the speed of the bullet at once before impact.
q1. a dentists drill starts from rest. after 3.30 s of constant angular acceleration it turns at a rate of 2.6 104
In a traveling electromagnetic wave, the electric field is represented mathematically asE = E0 sin[(2.0 × 1010 s-1)t - (5.3 × 101 m-1)x], What is the frequency of the wave
the following frequency distribution analyzes the scores on a test. find the class boundaries of scores interval
A 45-kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizontal is increased to 25 degrees , At what angle does the crate begin to slide
A 6.0cm tall object is placed 39cm in front of a spherical mirror. It is desired to produce a virtual image that is upright and 4.8cm tall
A Histogram shows that the mean of rain in the area has increased over the last 5 years. What is the probability that the mean would be higher this year than in the previous 5.
Two forces act on a 3.4 kg box. One of the forces is known to be F= 5.5 N. The acceleration is measured to be A= (-1.9i - 2.7j ) m/s2. Find the second force as a magnitude and direction
A circular loop in the plane of a paper lies in a 0.65T magnetic field pointing into the paper. What is the average induced current if the coil resistance is 2.3
Romeo is chucking pebbles gently up to Juliet's window, and he wants the pebbles to hit the window with only a horizontal component of velocity. he is standing at the edge of a rose garden 4.5 m below her window and 5 m from the base of the wall. How..
The ems of an AC circuit has an rms value of 120V. What is the maximum positive emf
t the vertices of a square are located four identical positive point charges. what is the charge on one of the positive point charges
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