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Q1. A wheel 66.0 cm in diameter accelerates uniformly from 211 rpm to 395 rpm in 7.5 s. How far will a point on the edge of the wheel have travelled in this time?
Q2. The average intensity of sunlight at the top of the earth's atmosphere is 1390 W/m2. What is the most energy that a 30 m multiplied by 55 m solar panel might collect in one hour in this sunlight?
Q3. At a certain facility, gross and background counts are made for the same length of time, and a(alpha)=0.050 and B(beta)=0.025. The background is not accurately known beforehand. Calibration at facility shows that one net count corresponds to a sample activity of 260 Bq. The minimum significant measured activity is 159 Bq. compute the minimum detectable true activity.
Find out the depth of the kerosene
A child's toy consists of a piece of plastic attached to a spring. The spring is compressed against the floor a distance of 2.0 cm and released. If the spring constant is 85 N/m, what is the magnitude of spring force acting on the toy at the moment i..
Guess scale factor of the Universe
Phonology: All the data for this problem come from a conservative dialect of Vèneto, a Romance language spoken in northern Italy near the city of Padua.
What is the third fragment right after the explosion
What is linear acceleration
How numerous extra electrons are on this particular oil drop (given the presently known charge of the electron)?
Find the Youngs modulus for the muscle tissue
With what tension should a rope with length 3.00m and mass 0.135kg be stretched for transverse waves of frequency 43.0Hz to have a wavelength of 0.720m. What torque does friction exert even as this wheel is slowing down.
What is the speed of the center of mass
A gasoline engine absorbs 2,600 J of heat and performs 1,000 J of mechanical work in each cycle. Find the total of heat expelled in each cycle.
A small but measurable current of 1.2*10^-10 A exists in a copper wire whose diameter is 2.5mm compute the current density and the electron drift speed.
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