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If vector B is added to vector A, under what conditions does the resultant vector have a magnitude equation to A + B? Under what conditions is the resultant vector equal to zero?
Suppose that a 7 centimeter diameter, 120 Watt light bulb radiates all its energy as a single wavelength of visible light. Find the electric field strength at the surface of the bulb
A hoop (I = MR^2) of mass 2.0 kg and radius 0.50 m is rolling at a center-of-mass speed of 15 m/s. What is the new speed of the center of mass of the hoop?
a coil of nichrome wire is 27.0 m long. the wire has a diameter of 0.390 mm and is at 20.0degc.a if it carries a
A single-turn plane loop of wire with a corss-sectional area 200cm^2 is perpendicular to a magnetic field that increases uniformly from 0.200T to 2.800T in 2.20 seconds. What is the magnitude of the induced current if the resistance of the coil is 8...
What is the magnitude of the apparent weight of a 83 astronaut 4600 from the center of Earth's Moon in a space vehicle moving at constant velocity.
The length of a simple pendulum is 0.72 m and the mass of the particle (the "bob") at the end of the cable is 0.27 kg. What is the angular frequency of the motion
The speed of an ion in a particle accelerator is doubled from 0.4500c to 0.9000c. Determine the magnitude of its final relativistic momentum
Find the momentum p, in the laboratory frame of reference, of a proton moving with a speed of 0.747c. Use 938MeV/c2 for the mass of a proton
A barber chair rests on a hydraulic cylinder with 10 cm in diameter. A pedal input drives the cylinder having a sectional area of 10 cm2. Calculate the minimum force that must be done on the pedal
string under a tension of 50.5 N is used to whirl a rock in a horizontal circle of radius 2.55 m at a speed of 20.3 m/s on a frictionless surface, What is the breaking strength, in newtons, of the string
Element X decays to element Y with a half-life of 0.77 s. Initially there is a sample of pure X and after 2.31 s there are 7g of Y. What was the mass of the original sample
The mass of the sled and its two riders in the figure below is 300 kg. find the magnitude of the centripetal force that acts on the sled
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