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A string trimmer is a tool for cutting grass and weeds; it utilizes a length of nylon "string" that rotates about an axis perpendicular to one end of the string. The string rotates at an angular speed of 49 rev/s, and its tip has a tangential speed of 59 m/s. What is the length of the rotating string?
m
A toy cannon uses a spring to project a 5.30 g soft rubber ball. The spring is originally compressed by 5.00 cm, At what point does the ball have maximum speed
You push on the chair with a force of = 37.0 directed at an angle of 43.0 below the horizontal and the chair slides along the floor. Using Newton's laws, compute the magnitude of the normal force that the floor exerts on the chair.
A scaffold of mass 80.0kg and length 5.10 m is supported in a horizontal position by a vertical cable at each end.
A horizontal beam of electrons initially moving at 4.0x10^7 m/s is deflected vertically by the vertical electric feild between oppositely charged parallel plates. the magnitude of the field is 2x10^4N/C. What is the verticle deflection d of the el..
The rate of flow of water through a horizontal pipe is 1.98 m3/min. Determine the speed of flow in m/s at a point
A light bulb marked "100 W [at] 120 V" is screwed into a socket at one end of a long extension cord in which each of the two conductors has resistance of 0.600 Ω
A body cools from 50 degre celcious to 49 degree celcious in 5 seconds. Hw long would it take to cool from 40 degree celcious to 39 degree celcious.
A vessel whose walls are thermally insulated contains 2.10 of water and 0.450 of ice, all at the temperature of 0 . The outlet of a tube leading from a boiler in which water is boiling at atmospheric pressure is inserted into the water.
A neutral conductor completely encloses a hole inside of it. you observe that the outer surface of this conductor carries a charge of -12 microC. how much charge is on the inner surface of the conductor
Observer S detects two flashes of light. A big flash occurs at x1 = 1242 m and, 6.06 ?s later, a small flash occurs at x2 = 802 m. what is the time interval between the flashes
Determine the tension in each string
Light has a wavelength of 600nm in a vacuum. It passes into glass, which has an index of refraction of 1.50. What is the WAVELENGTH of the light in the glass
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