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A 2.5 kg block of ice at a temperature of 0.0 C and an initial speed of 5.7 m/s slides across a leveled floor. If 3.3 x 10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block is entirely converted to the ice's internal energy?
q1. the wheel of the car has a radius of 0.340 m. the engine of the car applies a torque of 282 nbullm to this wheel
The surfaces of the lens have radii of curvature 27.1 cm (located on the object side of the lens), determine the index of refraction
Two cars are 1.24 miles apart both moving at 62.81 mi/h, How many miles will the trailing car travel before catching up to the lead car
A human wearing cloths has about 1.0 m^2 of exposed skin. How much power does a typical human loose due to radiation
A baseball is thrown straight up. The drag force is proportional to.In terms of, what is the y-component of ball's acceleration when its speed is half its terminal speed and it is moving up.
suppose that all the energy goes into the arrow, with what speed does the arrow leave the bow.
A helium atom (mass of helium atom = 6.646 x 10-27 kg), initially at rest, emits a photon of energy 40.8 eV. What is the speed of the Helium atom after releasing this photon
What is the speed of a car going v = 1mph in SI units? Notice that you will need to change from miles to meters and from hours to seconds. You can do each conversion separately. mke Use of the facts that 1 mile = 1609m and 1hour = 3600s.
Several people are riding in a hot air balloon. The combined mass of the balloon and the people totals 355 kg. how much mass should be dropped overboard so that the system acquires a net upward acceleration of .150 m/s2
The energy of the first excited state of a hydrogen atom is -0.34eV +/- 0.0004eV. What is the minimum average lifetime for this state
question1a curve of radius 160 m is banked at an angle of 11deg. an 808-kg car negotiates the curve at 88 kmh without
Light known to be polarized in the horizontal direction is incident on a polarizing sheet. What angles does the transmission axis of the sheet make with the horizontal
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