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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 20 A. The defroster directly heats an area of 0.40 m2 of the rear window. What is the maximum thickness of ice above this area that the defroster can melt in 4.4 minutes?
The aim is to find the woman's position when thebeam begins to tip.
An archeological specimen containing 8.7 g of carbon has an activity of 1.8 Bq. How old (in years) is the specimen
During a very quick stop, a car decelerates at 7.2 m/s2. Assume the forward motion of the car corresponds to a positive direction for the rotation of the tires, How long does the car take to stop completely in seconds
The ice has a thickness of 4.75 10-4 m, and the windshield has an area of 1.25 m2. The density of ice is 917 kg/m3. Explain how much heat is required to melt the ice?
a snowboarder that weighs 80 kg starts from rest at the top of the hill with a downward slope of 30 degrees from the horizontal. What is the coeffient of kinetic friction
What is Johns resultant displacement
You select a rental package that includes a car with an average consumption of 6rm liters of fuel per 100 rm km. Considering that in Europe average fuel cost is 1.063 rm euros/ liter, how much (in US dollars) will you spend in fuel in your trip.
An open organ pipe and an organ pipe that is closed at one end both have lengths of 0.48m at 20 C
A 240-V dc motor has an armature whose resistance is 1.10? . When running at its operating speed, it draws a current of 16.0A, What is the back emf of the motor when it is operating normally
A 191g oscillator has a speed of 96.50cm/s when its displacement is 2.70cm, What is the oscillators maximum speed
A uniform disk of mass 0.70 kg and radius 7.0 cm is mounted in the center of a 10 cm axle and spun at 800 rev/min. The axle is after that placed in a horizontal position with one end resting on a pivot. The other end is given an initial horizontal..
The helium-neon lasers most commonly used in student physics laboratories have average power outputs of 0.250 mW, Find the peak electric field strength
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