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1. Estimate the wind force on your hand when you hold it out of your car window while driving 55 mph. Repeat your calculations if you were to hold your hand out of the window of an airplane flying 550 mph.
2. Estimate the energy that a runner expends to overcome aerodynamic drag while running a complete marathon race. This expenditure of energy is equivalent to climbing a hill of what height? List all assumptions and show all calculations.
Consider a current carrying superconducting ring of radius 1.5 centimeter, suspended 1 centimeter from the center of the studied magnet along its axis. find the magnitude of magnetic force exerted on the ring
consider a uniform electric field of 50 nc directed toward the east. if the voltage measured relative to ground at a
An automobile tire is rated to last for 40,000 miles. To an order of magnitude, through how many revolutions will it turn?
A well-insulated electric water heater warms 111 kg of water from 20.0° C to 43.0° C in 29.0 min. Find the resistance of its heating element
light of wavelength 500 nm illuminates a 0.50 mm-diameter hole. a screen is placed 6.0 m behind the slit. the width of
A spherical rain drop carries a charge of 2.70E-8 C and has a potential of 5.76E+4 V at the surface, Find the surface area of the drop
A pair of narrow slits, separated by 1.8 mm, is illuminated by a monochromatic light source. obtain the wavelength of the monochromatic light
long solid straight conducting wire of radius R has a current density of J(r)= Ae^((-kr^2)/2). Determine the magnetic field inside and outside of the conductor
The astronaut throws a rock straight up with a velocity of + 16.9 m/s, What is the acceleration (magnitude and direction) due to gravity on this planet
Two particles are in a uniform electric field whose value is +2500 N/C. The mass and charge of particle 1 are m1 = 1.20 x 10-5 kg and q1 = -6.99C, while the corresponding values for particle 2 are m2 = 2.94 x 10-5 kg and q2 = +18.0C.
A first order (m=1) spectral line is observed at theta1 = 18.3 deg. At what angle will the same spectral line be observed in second order (m=2)
Demonstrate the concepts pertinent to this problem. A 1.60-cm-high object is situated 20.6 cm in front of a concave mirror that has a radius of curvature of 13.1 cm. Compute (a) the location and (b) the height of the image.
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