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An elevator ascends with an upward acceleration of a. At the instant its upward speed is v, a loose bolt drops from the ceiling of the elevator distance d from the floor. Calculate:
a. the time of flight of the bolt from ceiling to floor.
b. the distance it has fallen relative to the elevator shaft.
what is the speed of an electron with a de Broglie wavelength of .29nm, What is the speed of a proton with a de Broglie wavelength of .29nm
Two waves traveling on a string in the same direction both have a frequency of 125 Hz, What is the amplitude of the resultant wave if the original waves differ in phase by each of the following values
A man's gold wedding ring has an inner diameter of 2.2cm at 30?C. what will be the change in the inner diameter of the ring
A 5 kg rock is dropped from rest down a vertical mine shaft. How long does it take for the rock to reach a depth of 79 m? Neglect air resistance.
A lens that has a focal length of 8.45 cm is used as a magnifying glass. (Take the near point of a normal eye to be 25 cm from the eye.) What is the angular magnification
A car is traveling at 85.1 km/h at this speed the car has a fuel efficiency of 14.5 km/L. What is the average flow rate of gasoline
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, Calculate the probable percent error in the length
Two point charges, Q1 = -7 and Q2 = 2 are located between two oppositely charged parallel plates. The two charges are separated by a distance of x = 0.33m. Assume that the electric field produced by the charged plates is uniform and equal to E = 6..
Assume that light of a single color, rather than white light, passes through two slits 0.50 mm apart, determine the light's wavelength
A 5p-mm-focal-length lens has f-stops ranging from f/1.4 to f/22. What is the corresponding range of lens diaphragm diameters
A charge -318e is uniformly distributed along a circular arc of radius 7.00 cm, which subtends an angle of 49o, What is the linear charge density along the arc
A soft iron bar is sitsting surrounded by two separate loops of wire. The loop on the left, L1, initially has a current flowing clockwise as viewed from the right, What will be direction of magnetic field in soft iron bar
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