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Discuss your understanding of science and its processes as compared to the opinion of most (that science is a body of knowledge to be memorized).
An x-ray tube used for cancer therapy operates at 4.0MV, with a beam current of 25mA striking the metal target. Nearly all the power in this beam is transferred to a stream of water flowing through holes drilled in the target. What rate of flow, i..
An inflated rubber balloon is rubbed with a wool cloth till an excess of a billion electrons is on the balloon. What is the magnitude of the charge on the balloon.
An object has an initial velocity of 7.4 m/s. The object accelerates at a constant rate of 3.89 m/s2 for 2.8 seconds. What is the displacement of the object
How fast would the rain have had to come to raise the ocean level that high in 40 days and nights, how much would the mass of the earth have changed for this event, and would that significantly alter the strength of gravity on earth?
In the circuit the resistance are 17.0 kΩ and the battery's emf is 22 Volt. If the time constant is measured to be 37.0 μs, Compute the total capacitance of the circle
A walkway suspended across a hotel lobby is supported at numerouspoints along its edges by a vertical cable above each point and avertical column underneath. through what distance does the point move down
A negative charge (-q) with a mass of 0.29 kg is dangling vertically on a string. Directly below this charge, is a charge with same amount of charge, but with the opposite sign (+q). When it is located 22.74 cm below the charge on the string, the ..
A Styrofoam bucket of negligible mass contains 1.75 of water and 0.450 of ice. More ice, from a refrigerator at -14.0, is added to the mixture in the bucket, what mass of ice was added
A runner whose mass is 55 kg accelerates from a stop to a speed of 8 m/s in 3 seconds. How much work is done on the point-particle system by this force
Switch on a pump; then 100 s later, switch on a heater; then a further 30 s later, switch on the circulating motor.
A railroad flatcar is loaded with crates having a coefficient of static friction 0.25 with the floor. how short a distance can the train be stopped without letting the crates slide
A scientist notices that an oil slick floating on water when viewed from above has many different rainbow colors reflecting off the surface. She aims a spectrometer at a particular spot and measures the wavelength to be 750 nm (in air). The index ..
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