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The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m3, and the latent heat of fusion of water is 3.35 x 105 J/kg. The driver of the van turns on the rear-window defroster, which operates at 12 V and 18 A. The defroster directly heats an area of 0.59 m2 of the rear window. What is the maximum thickness of ice above this area that the defroster can melt in 2.1 minutes?
What is the angle of total internal reflection (critical angle) for a glass-to-water interface
This caused Goodly to borrow to meet its obligations, resulting in a drop in its stock price. Are the directors liable? Explain why or explain why not?
An eagle with 1.8m wingspan flaps its wings 21 times per minute, each stroke extending from 42%u2218above the horizontal to 42%u2218 below. What's the average tangential velocity of the wingtip
Derive a formula for the maximum elevation of the jumper's center of gravity in terms of the crouch depth, c, the equivalent force to weight ratio, Fequiv/W, the platform speed, Vp and other relevant parameters.
If a cube of a certain metal increases its volume from 15 cm3 to 17 cm3 as the temperature increases from 12°C to 28°C
What is the ratio of the intensities of an earthquake P wave passing through the Earth and detected at two points 17km and 49km from the source, what is the ratio of the amplitudes
A physics professor is pushed up a ramp inclined upward at an angle 34.0 degrees above the horizontal as he sits in his desk chair that slides on frictionless rollers, Use the work-energy theorem to find his speed at the top of the ramp
A certain superconducting magnet in the form of a solenoid of length 0.30 m can produce a magnetic field of 13.0 T in its core when its coils carry a current of 105 A. The windings, made of a niobium-titanium alloy, must be cooled to 4.2 K. Find o..
A biologist keeps a specimen of his favourite beetle embedded in a cube of polystyrene plastic. What is the beetle's actual distance beneath the surface
The coefficient of kinetic friction between the box and the surface of the incline is 0.2. The initial speed of the box at the bottom of the incline is 2 m/s. How far does the box travel along the incline before coming to rest
1000 kg of seawater at 17.5 C and salinity of 3 percent is mixed with 500 kg of pure water with initial temperature 5 C, Determine the final temp C and salinity % of the mixture?
A particle of mass 4.47 × 10?27 kg, moving at 9.46 × 105 m/s, strikes an identical particle which is initially at rest. What are the final speeds of the particles
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