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An electric motor rotating a workshop grinding wheel at a rate of 124 rev/min is switched off. Assume constant angular deceleration of magnitude 1.95 rad/s2. Find through how many revolutions does the wheel turn before it finally comes to rest?
Answer in units of rev.
A 10kg wooden box is resting on wooden ramp that can berotated to any angle from 0o to 90o. What is the maximum angle for the ramp
A tennis ball of mass 57 g travels with velocity m/s toward a wall. After bouncing off the wall, the tennis ball is observed to be traveling with velocity m/s.
A 63.0kg skier is moving at 6.55m/s on a frictionless, horizontal snow-covered plateau when she encounters a rough patch 3.55m long. How fast is the skier moving when she gets to the bottom of the hill
Electrons can be “boiled off” of a wire by heating the wire to sufficiently high temperature (typically well over 1000? C). Typically the electrons leave the wire with a fairly low speed which can be approximated as zero
A model rocket launches with an initial velocity of 6 m/s, at an angle of 88 degrees (with respect to the horizon). What is the maximum height attained by the rocket
Suppose your waffle iron is rated at 1.20 kW when connected to a 3.00 102 V source. What current does the waffle iron carry
A mode-locked, titanium-sapphire laser has a wavelength of 850 nm and produces 100 million pulses of light each second. What is the average power produced by the laser
A car at the Indianapolis 500 accelerates uniformly from the pit area, going from rest to 350km/h in a semicircular arc with a radius of 210m. Determine the tangential and radial acceleration of the car
If electrons are accelerated from rest in an electron gun by sending them through a potential difference of 11.0 kV
A 10 micro falad capacitor is charged so that the potential difference between its plates is 10 v. How much energy is lost when the two capacitors are connected together
What is the minimum cross-sectional area required of a verticalsteel cable from which is suspended a 327kg chandelier, If the cable is 7.3 m long, how much does it elongate
q1. a person eats a dessert that contains 220 calories. this calorie unit with a capital c is the one used by
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