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What phase difference between two otherwise identical traveling waves, moving in the same direction along a stretched string, will result in the combined wave having an amplitude 1.20 times that of the common amplitude of the two combining waves? Express your answer in degrees, radians, and wavelengths.
question a 4.2 kg rectangular air mattress is 2.7 m long 0.653 m wide and 0.167 m thick. what mass can it support in
A proton and electron moving with the same speed enter the magnetic field of the earth at the same angle, what type of trajectory will each particle follow in the earth's magnetic field
a rotating wheel requires 7.00s to rotate 26.0revolutions. its angular velocity at the end of the 7.00-s interval
A heat engine operates between a reservoir at 26°C and one at 324°C. What is the maximum efficiency possible for this engine
A batter hits a 0.14kg baseball that was approaching him at 30.0 m/s and, accordingly, the ball leaves the bat at 40.0 m/s in the direction of the pitcher. The ball remains in contact with the bat for 2ms. What is the average force exerted by bat.
The intensity of the sound wave from a jet airplane is 9.1 W/m2 at a distance of 130 m. At what rate does the jet airplane radiate energy in the form of sound waves
A rock is tossed straight up with a speed of 29 m/s. How long is the rock in the air, from the instant it is released until it hits the bottom of the hole
A positive charge q is placed at the origin. Identical charges Q are located at ±a on the x-axis. If the charge q is dispaced at a small distance x (much smaller than a) in either direction along the x-axis, find the period of SHM.
a system has 1000 joules of energy added to it and performs 800 joules of work. calculate the change in internal
The potential difference between the ends of a resistor is 9 V and the rate of energy dissipation in it is 18 W. What is the value of that resistor
A 2.40g bullet embeds itself in a 1.50kg block, which is attached to a spring of force constant 770 N/m. Find the time for the bullet-block system to come to rest
the inner and outer surfaces of a cell membrane carry a negative and positive charge respectively. because of these
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