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A woman finds the front windshield of her car covered with ice at -12.0 °C. The ice has a thickness of 4.50 x 10 -4 m, and the windshield has an area of 1.25 m2. The density of ice is 917 kg/m3. How much heat is required to melt the ice?
Emily has a field with uniformly cut grass of height 2 cm which grows at a constant rate. How long would it sustain each animal alone
How much power does an automotive battery contain that can furnish 750 Amperes at 12.7 volts for a short period of time
A helium-filled toy balloon has a gauge pressure of 0.400 atm and a volume of 8.0 liters. How much greater is the internal energy of the helium in the balloon
An infinitely long charged wire produces an electric field of magnitude 1.15 103 N/C at a distance of 51.0 cm perpendicular to the wire. The direction of the electric field is toward the wire. What is the charge distribution?
A bicycle racer is traveling at 10 m/s with an acceleration of 0.5 m/s^2. The radius of the bicycle wheel is 33 cm. What is the angular velocity of the bicycle wheels
The pilot of an aircraft wishes to fly due west in a 30.8 km/h wind blowing toward the south. In what direction should the aircraft head
A plane flies 450 km east from city A to city B in 45.0 min and then 900 km south from city B to city C in 1.50 h. (Assume points east and points north.) what is the plane's average velocity for the total trip
Two sheets of polarizing material are placed with their transmission axes at right angle to one another. What is the intensity of the transmitted light when the middle sheet is removed
Diffraction grating produces its third-order bright band at an angle of 79.4 degrees for light of wavelength 731nm. Find the angular location of the first-order bright band
A red line (? = 630 nm) in the third order overlaps with a blueline in the fourth order for a particular diffraction grating. What is the wavelength of the blue light
According to the law of universal gravitation, what will happen to Earth if the Sun were somehow replaced by the black hole of same mass.
Assume that a 7.0-cm-diameter, 50 W light bulb radiates all its energy as a single wavelength of visible light. Estimate the magnetic field strength at the surface of the bulb
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