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Q1. A student produced an interference pattern using microwaves by placing a double slit in front of a microwave generator. If the slits are 5.04 cm apart and the antinodes of the pattern are 14.50 cm apart at a distance of 1.54 cm from the slits, what is the frequency of microwaves? (6.21 x 10^8 Hz)
Q2. A 38.8-cm diameter disk rotates with a constant angular acceleration of 2.60 rad/s2. It starts from rest at t = 0, and the line drawn from the center of the disk to the point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. Find the position of P (in degrees, with respect to the positive x-axis) at t = 2.30 s?
Compute the coefficient of kinetic friction
When one gallon of gasoline is burned in a car engine, 1.18 x 10^8 J of internal energy is released. Suppose that 0.99 x 10^8 J of this energy flows directly into the surroundings (engine block and exhaust system) in the form of heat. If 6.0 x 10^5 J..
A series of small machine components being moved by a conveyor belt passes over a 140-mm-radius idler pulley. At the instant shown, the angular velocity of the idler pulley is 5 rad/s clockwise. If the total acceleration of point B is 2400 mm/s2, wha..
At the factory, a noon whistle is sounding with the frequency of 464 Hz. As a car travelling at 76 km/h approaches the factory, driver hears the whistle at frequency fi. After driving past the factory, the driver hears frequency ff. What is the chang..
What mass (in grams) of steam at 100°C should be mixed with 257 g of ice at its melting point, in the thermally insulated container, to produce liquid water at 84.0°C.
A solid cylinder with mass and radius, rotating with angular speed about an axis throughout its center, is set on the horizontal surface for which the kinetic friction coefficient is.
Coherent light with wavelength 546 nm passes through two very narrow slits, and the interference pattern is observed on a screen the distance of 3.00 {rm m} from the slits. The first-order bright fringe is a distance of 4.86 {rm mm} from the center o..
How do you establish the value of theta
A 25- sample of an ideal gas with is at 250 and 50. The gas is compressed isothermally to one-third of its original volume, then heated at constant volume until its state lies on the adiabatic curve that passes through its original state, and then al..
A 80 kg person sits on a 4 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.3 cm in diameter. Find the pressure in pascals exerted on the floor by each leg of the chair, assuming the weight is evenly distributed.
How many homes could be heated with the waste heat
Question: For all generators: Eg = 1\"\"0°, χ1 = j0.25 For all transformers: χ1 = j0.75 [A] Write the Y and Z matrices. B] Write the model equation. [C] For each bus, find V, ρ and Q.
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