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An ice skater spins with an average angular velocity of 15 rad/s for 5 sec. Find how many revolutions does she complete?
In an open manometer filled with mercury (densty = 13600 kg ? m3 ), the level of mercury column in the air side is 0.09 m higher than that in the gas side
question a proton is fired at 7e6 ms directly towards a stationary 2e-6 c point charge that cannot move and is
A 72 kg man in a 5-kg chair tilts back so that all weight is balanced on two legs of the chair. Assume that each leg makes contact with the floor over a circular area with the radius of 1.0 cm, and find out the pressure exerted on the floor by eac..
A 0.25 harmonic oscillator has a total oscillation energy of 9.9 Joule. If the oscillation amplitude is 20.0 centimeter, determine what is the oscillation frequency
a starship blasts past the earth at 2.0108 ms .just after passing the earth the starship fires a laser beam out its
A girl on a sled coasts down a hill. Her speed is 7.60 m/s when she reaches level ground at the bottom. The coefficient of kinetic friction between sled's runners and the hard, icy snow is 0.04, and the girl and sled together weigh 644N.
A person who weighs 600 N is riding a 98 Nmountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in eachtire is 8.05*105 Pa, what is the area of contact between each tire and the ..
You are given three resistors with the following resistances: R1 = 4.10 ?, R2 = 8.84 ?, and R3 = 3.08 ?. What is the smallest resistance you can assemble using these three resistors
Three moles of a monatomic ideal gas are heated at a fix volume of 2.07 m3. The amount of heat added is 3.37 x103 Joule. Determine the change in the temperature of the gas
Calculate the threshold wavelength, in nm, of a metal if that metal emits an electron with a kinetic energy of 6.32 × 10-19 J when illuminated with light that has a frequency of 1.97 × 1015 Hz.
A long string with a mass/length of 500 g/m is placed under a tension of 400 N, What is the wavelength of the resulting wave and What is the wave speed
question a radio station with a power of 20 kw sends out an omnidirectional wave at 1.25 mhz.a. if the electromagnetic
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