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Three balls (m= 0.450 kg) are placed at evenly spaced intervals on a 0.75 m rod (m= .250 kg). Find the moment of inertia of the entire system.
Assume the above system starts to spin, completings .75 rev in 3.5 sec. What is the kinetic energy in the system.
When connected in series to a 110-V line, two resistors use one-fourth the power that is used when they are connected in parallel. what is the resistance of the other
One skater throws a .3 kg ball at 5 m/s to his friend, who catches it and throws it back at 5 m/s. When the first skater has caught the returned ball, Illustrate what is the velocity of each of the two skaters?
A Carnot engine works between two heat reservoirs at temperatures Th = 305 K and Tc = 60 K. How much heat does it give off in each cycle
A plane sinusoidal electromagnetic wave carries 16.0 J of energy through a small window of area 0.20m2 in 10.0 s. What is the intensity of the wave
A heat pump uses 200 J of work to output 300 J of heat into a heat reservoir at 200 K. What is the coefficient of performance for the heat pump
The value of F B. ds along closed path in a magnetic field is given by 6.28 X 10 T.m. What is the total current that passes througn this closed path?
A lamp is placed 10 cm in front of a concave spherical mirror that forms an image of the filament on a screen placed 3.0 m from the mirror. What is the radius of curvature of the mirror
A person walks 25.0° north of east for 2.70 km. How far would the person walk due north and due east to arrive at the similar location.
Mary needs to row her boat across a 200 m-wide river that is flowing to the east at a speed of 1.1 m/s. Mary can row with a speed of 2.4 m/s. What is her speed with respect to the shore
A sound pulse has a power of 893.1 watts. It is radiating outwards from a point and at the time of observation is a radius of 7861.6 m from that point
An Australian emu is running due east in a straight line at a speed of 17.5 m/s and slows down to a speed of 12.2 m/s in 4.1 s. (a) What is the direction of the bird's acceleration? (b) Assuming that the acceleration remains the same, what is the ..
A football punter accelerates a football from rest to a speed of 10 m/s during the time in which his toe is in contact with the ball (about 0.17 s)
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