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Q1. A 5-kg load is fastened vertically to the end of steel wire 0.5m long and 0.0006 sq.cm in cross-section. Hanging from the bottom of this weight is alike steel which supports a second load of 40 lb. For each wire, calculate the elongation in mm and the strain. What is the total elongation of wires?
Q2. In 1847, Dutch scientist Christoph Buys-Ballot developed a test of the Doppler shift. He had a trumpet player sound a note at 456 Hz, whereas riding on a flatcar pulled by a locomotive. At the same time, the stationary trumpeter played the same note. Ballot heard 3.0 beats per second. How fast was the train moving toward him?
At what angle is the curve banked? The acceleration due to gravity is 9.8 m/s2.
Potassium iodide has an interplanar spacing of d = 0.296 nm. A monochromatic X-ray beam shows first-order diffraction maximum while the grazing angle is 7.8°. Compute the X-ray wavelength λ .
Calculate the threshold wavelength, in nm, of a metal if that metal emits an electron with a kinetic energy of 6.32 × 10-19 J when illuminated with light that has a frequency of 1.97 × 1015 Hz.
Compute the numerical value for acceleration
What is magnitude of the change in the magnetic field
What is the speed of the water leaving the nozzle
A board is 6 meters long. The center of mass is in the 2 meters from the left end. The board has a weight of 320 Newton's. How much force in Newtons is necessary to lift the right end while the other end stays on the ground.
What is the mass of sculpture (in kg) assume that the local acceleration due to gravity is 9.80 m/s2.
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld?
Find out the resulting values of the processional rate
At a right angle to a magnetic field. The acceleration of gravity is 9.81 m/s2. What is strength of the magnetic field necessary to exactly balance the weight of the proton and keep it moving horizontally.
What horizontal force is needed to hold bag in new position
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