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In a location where the speed of sound is 337 m/s, a 2000 Hz sound wave impinges on two slits 30cm apart.
a) At what angle is the first maximumlocated?b) If the sound wave is replaced by 3.00cm microwaves, what slit separation gives the same angle for the first maximum?c) If the slit separation is 1.00 µm, what frequency lightgives the same first maximum angle?
a 250 kg merry-go-round in the shape of a uniform solid horizontal disk of radius 1.50 m is set in motion by wrapping a
What is the minimum energy needed to create a electron-positronpair when the photon collides with an electron? I know what to do when it collides with a nucleus, I can not figureout what to do about an electron.
What is the magnitude of buoyancy force ?
A baseball (m = 149 g) approaches a bat horizontally at a speed of 42.6 m/s (95 mi/h) and is hit straight back at a speed of 47.1 m/s (105 mi/h). compute the average force exerted on the ball by the bat
A Carnot engine operating between a warmer unknown temperature and a reservoir of boiling helium at 1.76 K has an efficiency of 56%. What is the warmer temperature
a 1.48 cm diameter solenoid passes through the center of a 5.95 cm diameter loop. the magnetic field inside the
The dimensions of the picture on a 35.0 mm color slide are x = 24.0 mm by y = 36.0 mm. How far is the slide from the lens
A -3.07 ?C charge is placed at the center of a conducting spherical shell, Calculate the total charge on the outer surface of the conductor
a compound pendulum mass m is at rest hanging freely from a point o distance l from its center of gravity g. it has a
Find the electric energy density between the plates of a 225-?F parallel-plate capacitor. The potential difference between the plates is 350V
a transformer with 120 turns in its secondary supplies 12 volts at 220 ma to a toy train. the primary is connected
Initially stationary (the train starts at rest), a train has a constant acceleration of 0.6 m/s2, What is its speed after 21 s
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