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A slender rod is bent to form a square frame of side 6 in. The frame is attached by a collar at A to a vertical shaft which rotates with a constant angular velocity ω. Determine the value of v for which line AB forms an angle ω= 48° with the horizontal x axis.
A group of students have measured the time it takes for a cart to travel some distance along a level track. What is the best estimate of the relative error in their determination of the cart´s speed
When a 9.0 cm long pencil is arranged perpendicular to a convex mirror's optical axis at a distance of 22 cm from the mirror, How tall is the pencil's image if the pencil is moved to a distance of 50 cm from the mirror
When the current in a toroidal solenoid is changing at a rate of 0.0260 A/s, the magnitude of the induced emf is 12.6 mV. When the current equals 1.40 A, the average flux during each turn of the solenoid is 0.00285 Wb. How many turns does the solenoi..
A toroidal inductor with an inductance of 87.0 mH encloses a volume of 0.0200 m3. what is the current through the inductor
A 2000 Hz sound wave passes through a wall with two narrow openings 30 cm apart. If sound travels on average 345 m/s, What is the angle of the first order maximum
One way to measure on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 for a ball to fall freely 11.26.
The hydrogen spectrum has a red line at 656 nm and a violet line at 434 nm. What angular separation between two spectral lines obtained with a diffraction grating that has 4920 lines/cm? (Assume that the light is incident normally on the grating.) fi..
A rocket is fired at an angle from the top of a tower of height h0 = 55.7m. What is the position vector of the rocket 15.0s after it is fired
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of 7.70 N is applied. A 0.490-kg particle rests on a frictionless horizontal surface, What is the amplitude of the motion
Determine the total electric flux through the paraboloidal surface due to a constant electric field of magnitude Eo in the direction along the axis of the paraboloid
On her way to visit Grandmother, Red Riding Hood sat down to rest and placed her 1.7-kg basket of goodies beside her. A wolf came along, at what angle was Red Riding Hood pulling
An electron with kinestic energy 1.8 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 27.0 cm, Find the period of the motion
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