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A block of ice rests across the whole of a rectangular table. A wire on which we attach a 10 kg weight surrounds the ice. Explain why the wire will go through the ice block without the ice breaking into two pieces.
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Question: A stationary boat in the ocean is experiencing waves from a storm. The waves move at 55 km/h and have a wavelength of 160 m. The boat is at a crest of a wave. How much time elapses until the boat is first at th ...
Question: The specific heat capacity of water is 4190 J/kg K, its heat of melting is 3.33 x 10^5 J/kg, and its heat of vaporization is 22.6 x 10^5 J/kg. For 1 kg of water, which of the following requires the most thermal ...
Question: A particle initially located at the origin has an acceleration of a= 2.00j m/s2 and an initial velocity of Vi = 7.00i m/s. (a) Find the vector position of the particle at any time t (where t is measured in seco ...
Question: A skier is accelerating down a 30.0 degree hill at 1.80 m/s2. What is the vertical component of her acceleration? How long will it take her to reach the bottom of the hill, assuming she starts from rest and acc ...
Question: (a) Is the magnetic field created by a current loop uniform?Explain. (b) Does a wire connected to the terminals of abattery emit electromagnetic waves? Explain. (c) Why do astronomers looking at distant galaxie ...
Question: A parallel-plate air capacitor has a capacitance of 920 pF. The charge on each plate is 3.90 μC. A) What is the potential difference between the plates? Express your answer in kV. B) If the charge is kept cons ...
Question: A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 6.30s later. What was the rocket's acceleration in m/s^ ...
Question: A plastic rod is charged to -20 nC by rubbing. Have electrons been added to the rod or protons removed? Explain. How many electrons have been added or protons removed? The response must be typed, single spaced, ...
Question: In this problem you will estimate the heat lost by a typical house, assuming that the temperature inside is Tin=20^C and the temperature outside is Tout=0^C. The walls and uppermost ceiling of a typical house a ...
One cubic meter (1.00m^3) of concrete has a mass of 2.30E+3kg, and 1.00m^3 of copper has a mass of 8.92E+3kg. Find the radius of an concrete sphere whose mass is the same as that of an copper sphere of radius 1.28cm?
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