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A circular curve of highway is designed for traffic moving at60km/h/.
a.) If the radius of the curve is 150m, what is the correctangle of banking of the road?
b.) If the curve were not banked, what would be the minimumcoefficient of friction between tires and road that would keeptraffic from skidding at this speed?
A potential difference of 1.50 V will be applied to a 40.0 m length of 18-gauge copper wire (diameter 0.04 in.), find the rate at which thermal energy will appear in the wire
Two children fighting over a 2.0-kg toy pull on the toy in different directions. One child pulls to the north with a force of 6.3 N, and the other child pulls to the east with a force of 5.3 N. What is the magnitude and direction of the net force on ..
You and your friend Peter are putting new shingles on a roof pitched at 25?. If the coefficient of kinetic friction between the box and the roof is 0.51, with what speed should you push the box to have it gently come to rest right at the edge of th..
The car encounters a loop of radius R = 18 m at ground level. As you will learn in the course of this problem, the initial height 54.00 m is great enough so that the car never loses contact with the track.
A 30 charge is moved from a point where = 150 to a point where = -70. How much work is done by the force that moves the charge
One kilogram of dry air at STP conditions is exposed to 1.00 R of X-rays. One roentgen is defined by Equation 32.1 in Section 32.1. An equivalent definition can be based on the fact that an exposure of one roentgen deposits 8.30 x 10-3 J of energy..
A 94.00 water skier floating in a lake is pulled from rest to a speed of 10 in a distance of 24. What is the net force exerted on the skier, assuming his acceleration is constant.
Light has a wavelength of 550 nm in a vacuum. It then enters a medium of index of refraction 1.70, What is the frequency of this light in the vacuum, What is its frequency in the medium
A box of mass 12.0 kg is sitting on the floor of an elevator which is accelerating upwards at 5.1 m/s2. If the coefficient of static friction between the box and the floor if 0.30, what is the minimum horizontal force needed to just start moving the ..
For red light (lamda = 0.64um), ni in pure water is approx 1.3 x 10^-8; for blue light (lamda = 0.48um), ni is approx 1.0x10^-9. The deep end of a typical home swimming pool is approx 2.5m deep.
2 mol of a diatomic ideal gas expand adiabatically and quasi-statically. The initial temp of the gas is 300K, What is the final temp of the gas
the forces exerted on the shoes and back of the 72-kg climber bythe walls of the chimney are perpendicular to the walls exertingthem. what is the magnitudeof the force exerted on his back
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