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The apparatus consists of a round level table in the center of which is a massless ring. There are three strings tied to different spots on the ring. Each string passes parallel over the table and is individually strung over a frictionless pulley (there are three pulleys) where a mass is hung. The table is degree marked to indicate the position or angle of each string. There is a mass m1 = 161 g located at θ1 = 26.5° and a second mass m2 = 223 g located at θ2 = 279°. Calculate the mass m3, and location (in degrees), θ3, which will balance the system and the ring will remain stationary.
In a heart pacemaker, a pulse is delivered to the heart 81 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 1.8 x 106. One pulse is delivered every time the fully charged capacitor loses 60.5% of its ..
If 6.5J of work was done by friction as the box slides down the slope, what would be the compression in the spring?
An electric dipole includes a charge of 4 ?C and a second charge. What is the total charge of the dipole?
A 35.5 kg girl and a 58.0 kg boy are on the surface of a frozen lake, 12.5 m apart. Using a rope, the girl exerts a horizontal 4.60 N force on the boy, pulling him toward her.
The electric field in a laser beam is given by E(x,t) = (1000V m)sin[(pi x107 rad m)x + (3pi x1015 rad s)t]. What is the (ordinary) frequency of the beam
A car speeds past a stationary police officer while travelling 115km/h. The officer immediately begins pursuit at a constant acceleration of 10.20 km/h/s (note the mixed units), just as the driver passes the officer.
A farsighted person uses glasses with a refractive power of 3.6diopters. The glasses are worn 2.5 cm from his eyes? What is thisperson's near point when not wearing glasses?
A stream of water strikes a stationary turbine bladehorizontally, as the drawing illustrates. The incident water streamhas a velocity of +16.0 m/s, while the exiting water stream has avelocity of -16.0 m/s.
If Plancks constant, h, were larger, would photons of light of the same frequency be more energetic or less energetic?
A child and sled with a combined mass of 49.20 kg slide down a frictionless hill that is 7.38 m high. If the sled starts from rest, what is its speed at the bottom of hill.
Which of the following determines whether a projectile electron strikes another electron or passes by the nucleus? Where in the atom do x-rays originate?
Explain how Newton's Second Law of Motion APPLIES to a task you perform. Describe Examples how you move an object or person with constant speed AND also with constant acceleration.
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