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A Big Mac has 3,100,000 Joules of chemical energy. If electricity costs $0.10/kWh, what is the cost of the electric energy equivalent to the energy in a Big Mac? (the cost of a Big Mac is $3.57)
A pair of narrow slits are .075 mm apart and are located 1.5 m from the screen. Find the wavelength of the beam
We want to design a freeway off ramp that has a radius appropriate for the posted speed. What is the radius of the curved exit ramp such that the car does not skid off the ramp
The shaft shown below has a solid round cross-section & is supported by bearing at A & B. Find the location of maximum bending stress in the shaft.
Assume that the air temperature is 20C and that no wind is blowing. How much time would elapse if the wind were blowing toward the observer at 33.0Km/h from where the rail was struck?
A car is traveling at 85.1 km/h at this speed the car has a fuel efficiency of 14.5 km/L. What is the average flow rate of gasoline
when free from rest from this spot, the particle arrives at B with twice the speed it previously had, or 2vB. Find the potential at B.
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. compute the mass of the aluminum cup
An aluminum wire having a cross-sectional area equal to 2.70 10-6 m2 carries a current of 6.50 A. The density of aluminum is 2.70 g/cm3. calculate the drift speed of the electrons in the wire
A fixed 0.15 kg solid-disk pulley with a radius of 0.060 m is acted on by a net torque of 5.4 m�·N. What is the angular acceleration of the pulley
A certain copper wire has a resistance of 11.0?. What is the resistance of each piece
Two thin lenses with a focal length of magnitude 12.0cm , the first diverging and the second converging, are located 9.00cm apart. What is the height of the final image
In addition, the snow exerts a retarding force on the sled that points opposite to direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
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