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A small object is placed to the left of a convex lens and on its optical axis. The object is 30 cm from the lens, which has a focal length of 20 cm. If the object is moved to a position 28 cm to the left of the lens, what will the image position be? (A positive value for p, or position, means the image is on the right side of the lens.)
As a function of time, the velocity of the football can be written as. Calculate the average acceleration vector of the football
An alpha particle (the nucleus of a helium atom formed by 2 protons and 2 neutrons, What would be the force on the alpha particle if it were traveling parallel to the magnetic field lines
a 71 kg baseball lplayer jumps straight up to catch a line drive. If the 140 g ball is moving horizontally at 28 m/s, what is his speed immediately after stopping the ball
A roller coaster track has a hill with a circular curve of radius r =15 m. What is the normal force on the 60-kg passenger
When a train's velocity is 12{rm{ m/s}} eastward, raindrops that are falling vertically with respect to the earth make traces that are inclined 30.0 ^circ to vertical on windows of the train.
The crankshaft in a race car goes from rest to 3540{\rm rpm} in 3.0{\rm s}. What is the crankshaft's angular acceleration
Determine the magnitude of force F in cable AB in order to produce a moment of 500 ft lbs about the hinged axis CD
If the mass is suspended by a spring M = 200g, What is the value of the spring constant of the spring
A 120 W lightbulb and a 90.0 W lightbulb are connected in a series. what is the current through the two bulbs
A ruler of mass m = 75g and L=3.0meters is placed so that it is exactly balanced across two spinning cylinders a distance d = 1.0meters apart. What is the frequency of oscillation in the ruler
A 7 kg sled is initially at rest on a horizontal road. The sled is pulled a distance of 3.5 m by a force of 37 N applied to the sled at an angle of 30o to the horizontal
Joe is 0.500 m from the right end and weighs 920-N. Given that the scaffold is in rotational and translational equilibrium, what are the forces on each cable.
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