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1.a. What are the three longest wavelengths for standing waves on a 240 cm long string that is fixed at both ends?
b. If the frequency of the second longest wavelength is 50 Hz, what is the frequency of the third longest wavelength?
2. A sheet of glass is coated with 500 nm thick layer of oil (n = 1.42).
a. for what visible wavelengths of light do the reflected waves interfere constructively?
b. for what visible wavelengths of light do the reflected waves interfere destructively?
c. what is the color of the reflected light and transmitted light?
3. You are standing 2.5 m directly in front of one the two loud speakers shown in Figure. They are 3.0 m apart and both are playing a 686 Hz tone in phase. As you begin to walk from away from the speaker, at what distances from the speaker do you hear a minimum sound intensity. The room temperature is 20 oC.
The pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.9 millimeter and is 8.6 centimeter long. find the average speed of blood in the pulmonary artery
A diffraction grating of 3400 slits per centimetre is utilized to analyze the spectrum of mercury. Discover the angular separation in the first-order spectrum of the two lines of wavelength 579 nm and 577nm.
A "biconvex" lens is one in which both surfaces of the lens bulge outwards. What is the focal length f of this lens in air
two identical capacitors store different amounts of energy capacitor a stores1.3x 10-3j and capacitor b stores3.3x
A 8.0 kg block oscillates with an amplitude of 0.070 m on a light spring constant k= 13 N/m. What is the maximun value of the block's velocity
Astronomers discover a binary star system that has a period of 93.0 days. The binary star system consists of two equal-mass stars, each with a mass twice that of the sun, that rotate like a dumbbell about the centre of mass at the midpoint between..
A satellite is found to be in an orbit about Planet X such that the period of the orbit matches the rotational period of the planet about its axis, namely 25.2 days. find at what distance from the center of the planet is the satellite orbiting
A state trooper chases a speeder along astraight stretch of road; both vehicles move at 155 km/h. What is the Doppler shift in the frequency heard by the speeder
A heat pump moves heat from outside, where the temp is 1 degree C, to inside a building, where the temp is 20 degrees C, How much heat is dumped into the building in each cycle
A 266.0 gram handball moving at a speed of 5.4 m/s strikes a wall at an angle of 29.0 degree to the normal of the wall and then bounces off with the same speed at the similar angle. Find the average force exerted on the wall by the ball
A 25 gram ball is released from rest 80 meter above the surface of the Earth. Determine its speed just before it hits the surface
A bucket with a mass of 3.0 kilogram is suspended by a rope that is wrapped around a cylinder. obtain what is the velocity of the bucket after it has fallen 4.0 meter
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