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A curve in a road has a banking angle calculated and posted for 80km/h The road is covered with ice so you drive slower than this limit What may happen to your car? why?
The Big Bang theory states that the beginning of the universe was accompanied by a huge burst of photons. Calculate the peak wavelength of this radiation
The distance from the center of a circular diffraction pattern to the first dark ring is 15,000 wavelengths on a screen that is 0.85 m away
A 10.0kg box having an initial speed of 3.0m/s slides along a rough table and comes to rest. Estimate the total change in entorpy of the universe. Assume all objects are at room temperature (293K)
Evaluate the critical angles for zircon and ice when surrounded by air. Suppose that λ = 589 nm
A marathon runner completes a 42.188-km course in 2 h, 21 min, and 23 s. there is an uncertainty of 30 m in the distance traveled and an uncertainty of 1 s in the elapsed time. Compute the percent uncertainty in the distance.
A mountain climber friend with a mass of 80 kg pondersthe idea of attaching a helium balloon to himself to effectivelyreduce his weight by 25% when he climbs. He wonders what heapproximate size of such a balloon would be.
What is the horizontal distance x to the base of the wall supporting the mirror of the near point on the floor that can be seen reflected in the mirror . What is the speed of the third fragment? Overlook effects due to gravity.
A ball whose mass is 1.3 kg is suspended from a spring whose stiffness is 3 N/m. Suppose this apparatus were taken to the Moon, where the strength of the gravitational field is only 1/6 of that on Earth. What would the period be on the Moon
Calculate the length of a pipe that has a fundamental frequency of 420 Hz
A square loop and a rectangular loop are each made from the same length of wire. Each loop contains a single turn, and carriesthe same amount of current. The loops are placed in the sameuniform magnetic field.
After 2.12 days, the activity of a sample of an unknown type radioactive material has decreased to 84.6% of the initial activity. What is the half-life of this material
The Youngs Modulus for copper is 130 Gpa. What is the strain in the the copper wire under a stress of 120Mpa
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