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An infant's pulse rate is measured to be 156 ± 4 beats per minute. What is the percent uncertainty in this measurement? (Note that percent uncertainties should be reported to two significant figures.)
X- rays are created in a standard x-ray tube by accelerating electron across a potential difference of V and having the electrons collide with a metal target to eject x-ray. when the wavelength of the x-ray is measured using Bragg diffraction from..
Why does air circulate from a point with less pressure towards one with more pressure? (We have a tunnel, and on one side the wind blows faster than at the other)
At a given instant in time, a traveling EM wave is noted to have its maximum magnetic field pointing west, what are the maximum values for the two fields
A 15.0-kg block rests on a horizontal table and is attached to one end of a mass less, horizontal spring. By pulling horizontally on the other end of the spring, someone reasons the block to accelerate uniformly and reach a speed of 5.00 m/s in 0.390..
A high-voltage transmission line with a resistance of 0.33 omegacap.gif/km carries a current of 1040 A. What is the power loss due to resistance in the line
A glass surface (n = 1.65) has a layer of water (n = 1.33) on it. Light in the glass is incident on the glass-water interface. Find the critical angle for total internal reflection
A particle of mass m is subjected to a force acting in the x-direction, Fx = (2.77 + 0.351x) N. Find the work done by the force as the particle moves from x = 0 to x = 4.41 m
A four-turn circular wire coil of radius 0.495 m lies in a plane perpendicular to a uniform magnetic field of magnitude 0.415 T. what is the average induced emf in the wire during this time
Two waves of the equal frequency have amplitudes 2.13 and 1.36. They interfere at a point where their phase difference is 58.5 degree. Determine what is the resultant amplitude
A bucket of water of mass 14.8kg is suspended by a rope wrapped around a windlass, that is a solid cylinder with diameter 0.290m with mass 12.5kg. What is the time of fall
1 a student throws a ball vertically upward such that it travels 6.9 m to its maximum heightif the ball is caught at
q1. a thin horizontal copper rod is .989696 m long and has a mass of 43.3758 g.the acceleration of gravity is 9.8
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