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Q1. A particular guitar string is supposed to vibrate at 195 Hz, but it is measured to actually vibrate at 210 Hz. By what percent has to the tension in the string been changed to get the frequency to the correct value?
Q2. Plan a heater using nichrome wire which should get heated to 67 degree Celsius on applying 12V. What must be the dimensions of the nichrome wire used?
Q3. Weight of a box is 150 pounds. The horizontal force required to move the box is 70 lb. What horizontal force is required if 60lbs is added to box?
A string of 13 identical Christmas tree lights are connected in series to a 127 V source. The string dissipates 63 W. What is the comparable resistance of light string.
What is the net electric flux through the spherical surface
Find out the lengths of acceleration and deceleration phases
What minimum force requires for door to hold it open
A stream of water strikes a stationary turbine blade horizontally. The incident stream has a velocity of +16m/s whilst the exit has a velocity of -16m/s. mass of water per second that strikes the blade is 30kg/s.find the magnitude of average force ex..
One displacement vector A has magnitude of 2.78 km and point due north. Another displacement vector B has a magnitude of 7.40 km and also points due north. Provide diagrams and calculate the magnitude and direction of A+B, B-A, A-B.
A screen is placed 1.30 {rm m} behind a single slit. The central maximum in the resulting diffraction pattern on the screen is 1.70 {rm cm} wide-that is, two first-order diffraction minima are separated by 1.70 {rm cm}.
Find an expression for work done by the gas
What is closing equilibrium temperature of the tin-water
Assume that the rod is held at rest horizontally and then released. (Throughout the remainder of this problem, your answer may include the symbol, moment of inertia of the assembly, whether or not you have answered the first part correctly.)
The resistance of the loop is 0.490 ohms. A magnetic field parallel to z-axis is given by B= 0.830 y^2 t, where B is in tesla, y in meters, and t in seconds. What is the size of the induced current in the loop at t = 0.470s .
If she is served 200 of coffee at 84 in a well-insulated container, how much ice at 0 should she add to obtain a final temperature of 31.
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