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A person is riding a bicycle, and its wheels have an angularvelocity of 11.0 rad/s. Then, the brakes are applied and the bikeis brought to a uniform stop. During braking, the angular displacement of each wheel is 19.6 revolutions. (a) How much time does it take for the bike tocome to rest? (b) What is the anguar acceleration(in rad/s2) of each wheel?
An object has a kinetic energy of 303 J and the momentum of magnitude 22.9 kg·m/s. Find the speed and the mass of the object.
In the circuit of a radio receiver a 540 ?F capacitor is connected in series with a 12.0 mH inductor and a resistance of 2.60 ?. Does the voltage lead or lag the current
Calculate the pressure variation corresponding to a sound insensity of 10-16 W/cm2
a car accelerates along a straight road from rest to 90km/h in 5 seconds, what is the magnitude of its average acceleration
A wooden raft has a mass of 90 kg. When empty it floats in water (density 1000 kg/m3) with 67% of its volume submerged. What mass of sand can be put on the raft without it sinking
q1. a music fan at a swimming pool is listening to a radio on a diving platform. the radio is constant frequency when
Together, two students exert a force of 640 N in pushing a car a distance of 30 m. How much work do the students do on the car
a 12,000 volt line produces 100,000 watts with a current of8.3 amps. If the voltage were only 240 volts, what would be the power expended as heat
A steel cable with total length 59 m and mass 110 kg is connected to two poles. The tension in the cable is 1,260 N, and the wind makes the cable vibrate with a frequency of 2 Hz. Calculate the wavelength of the resulting wave on the cable
Using a block of a transparent, unknown material, it is found that a beam of light inside the material becomes totally internally reflected at the air-block interface at an angle of 48°. What is its index of refraction?
Light of wavelength 560 nm illuminates a single 0.77 mm wide slit. At what distance from the slit should a screen be placed, What is the width of the central maximum
Model the electromagnetic wave in a microwave oven as a plane traveling wave moving to the left, with an intensity of 26.3 kW/m2. An oven contains two cubical containers of small mass, each full of water.
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