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Q1. Suppose that the two speakers are separated by 2.50 m and are vibrating exactly out of phase at a frequency of 429 Hz. The speed of sound is 343 m/s. Does the observer at C observe constructive or destructive interference when his distance from speaker B is (a) 1.15 m and (b) 2.00 m?
Q2. How long will it take you to cover the 99 m length of the walkway if, once you get on the walkway, you immediately turn around and start walking in the opposite direction with a speed of 1.5 m/s relative to the walkway?
While leaning out a window that is 5.5 m above the ground, you drop a 0.60-kg basketball to a friend at ground level. determine the amount of work done by the force of gravity
What is the magnitude of the average force on Superman's chest from the stream of bullets.
A parallel-plate capacitor is constructed with circular plates of radius 6.0×10?2m . The plates are separated by 0.26mm, Find the value of the dielectric constant
Suppose you want to make a scale model of a hydrogen atom. For the nucleus you choose a small ball bearing with a radius of 1.7 mm, What would be the radius of the model
A cyclist is pedaling at a cadence of 60, so the bicycle wheel make 60 rotations per minute around the axis through its center. What is the wheel's angular speed
A 20 kg crate is pushed across the floor at a constant velocity of 4 m/s with a force of 100 N. How much energy is lost to heat in the first ten seconds
If you want to find the latent heat of fusion, you take a cup with 0.755 kg of water at 30.00 C and drop 0.0850 kg of ice initially at 0.000 C and it all reaches an equilibrium temperature of 19.00 C,
A simple dc-motor is made up of a single coil rotor placed between two permanent magnets. How many turns should the coil have so that the motor can supply a torque of 0.100 N-m
You wish to observe the progress of your vacuum pump in evacuating a tall bell jar for the purpose of demonstrating that sound waves do not travel in a vacuum
q1. suppose you discover a type ia supernova in a distant galaxy. at maximum brilliance the supernova reaches an
A converging lens has a focal length of f = 26 cm. An object is placed 39 cm from the lens. Find out the size of an image in cm if the object has a height of 5 cm. express answer with one decimal place.
A charge of +378 C is fixed at the center of a square that is 0.64 m on a side. How much work is done by the electric force as a charge of +1.8 C is moved from one corner of the square to any other empty corner?
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