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Consider a seesaw whose total mass is 10 kg and total length is 3.5 m. Suppose the seesaw is placed off center on the pivot point so that the pivot point is 24 cm from the center of the seesaw (Fig). Two children, weighing 25 kg and 31 kg, respectively, want to balance on the seesaw. They are separated by a distance of 2.80 m. How far from the center will they have to sit if the lighter child sits on the longer part of the seesaw?A) find mass of (lighter child)
B) find mass of (heavier child)
A horizontal magnetic field of 2.0×10?4 T is at an angle of 25 to the direction of the current in a straight, horizontal wire 75 cm long. what is the magnitude of the force on the wire
q1. kelli weighs 417 n and she is sitting on a playground swing that hangs 0.44 m above the ground. her mom pulls the
a geostationary communications satellite orbits the earth directly above the equator at an altitude of 34800.
Calculate the limiting angle of resolution for the eye, assuming a pupil diameter of 1.95 mm, a wavelength of 530 nm in air
what is the magnitude of the acceleration of the ball just before it strikes the ground? what was the initial speed of
Electrons leave the cathode of a TV tube at essentially zero speed and are accelerated toward the front by 10,000 V potential. At what speed do they strike the screen? Express this value as a fraction of the speed of light.
A block rests on a horizontal, frictionless surface. A string is attached to the block, and is pulled with a force of 44.0 N at an angle θ above the horizontal. After the block is pulled through a distance of 17.0 m its speed is v = 2.10 m/s, and 55...
a heavy box of school books (mass is 50kg) was set down at rest on an inclined street (theta = 30 degrees). Draw a force Diagram of the box
A braking force is applied to a 300kg motorcycle to reduce its speed to reduce its speed from 20.0m/s to 16.0m/s in 10.0s. find the change that has taken place in the momentum of the motorcycle
the 3.00 kg cube has edge lengths d = 6.00 cm and is mounted on an axle through its center, what is the period of the resulting SHM
a beam of protons is accelerated through a potential difference of 0.745kvand then enters a uniform magnetic field
a stone falls from rest from the top of a cliff. a second stone is thrown downward from the same height 3.4 s later
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