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Q. A tuning fork vibrating at 516 Hz falls from rest and accelerates at 9.80 m/s2. How far below the point of release is the tuning fork when waves with a frequency of 489 Hz reach the release point? Take the speed of sound in air to be 340 m/s.
Q. A simple generator has a 470 loop square coil 21.0 cm on a side. How fast must it turn in a 0.360 T field to produce a 120 V peak output?
Two identical aluminium objects are insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at the higher potential.
What is a density of the block
What is the tangential acceleration of a bug on the rim of a 13.0-in.-diameter disk if the disk accelerates uniformly from rest to the angular speed of 76.0 rev/min in 3.50 s.
An airplane is flying with a velocity of 81.0 m/s at an angle of 24.0^circ above the horizontal. When the plane is a distance 108m directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
Each is afraid that one vine will break; as a result they grab each other and hang on. They swing upward together, reaching a point where the vines make an angle of 22.1° with the vertical. Find the value of the ratio m/M.
An electric field of 254,000 N/C points due west at the certain spot. What are the magnitude and direction of the force that acts on the charge of -8.1 µC at this spot.
A dog running in an open field has components of velocity = 3.4 and = -1.9 at time = 10.4. For the time interval from = 10.9 to = 24.7, the average acceleration of the dog has magnitude 0.45 and direction 25.
At rest, a car's horn sounds at a frequency of 385 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the similar direction with one-third the car's speed hears a frequency of 342 Hz. What is the speed of the ca..
A wheel 65 cm in diameter accelerates uniformly from 215 rpm to 390 rpm in 6.0 s. How far will a point on the edge of the wheel have traveled in this time.
Mattwe pulls his little sister sarah in a sled on an icy surface, with a force of 60 N at an angle of 37 ° upward from the horizontal. If he pulls her a distance of 12m, then determine the work done by matthew?
You travel to an alien planet. The local population tries very hard to tell you what gravity is on the surface. You cannot understand them, and do not have a tool to calculate gravity directly. You also ran out of water. They offer a liquid to you, o..
A gymnast with mass m1 = 41 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 108 kg and length L = 5 m. Each support is 1/3 of the way from each end. at least the gymnast stands at the left end of..
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