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A cannon tilted upward at 26° fires a cannonball with a speed of 105 m/s. What is the component of the cannonball's velocity parallel to the ground?
A converging lens (f = 11.9 cm) is located 30.6 cm to the left of a diverging lens (f = -5.94 cm). calculate the overall magnification
a roller coaster travels 41.1 at an angle of 40 degrees above the horizontal. how far does it move horizontally and
An infinitely long wire is formed as in the diagram on your assignment. It is formed so that it has a circular portion of R = 50cm and the straight portion is located at a distance r from the center of the circular portion. Determine r (in cm) suc..
An object whose weight is 100 Ibf experiences a decrease in kinetic energy of 500 ft. Ibf and an increase in potential energy of 1600 ft. Ibf. The initial velocity and elevation of the object, each relative to surface of the earth, are 50 ft/s and 40..
When laser light of wavelength 632.8nm passes through a diffraction grating, the first bright spots occur at +/- 17.8 degrees from the central maximum. At what angles do the third bright spots occur
a radiator has an emassivity of .90 and its exposed area is 1.23 m^2. What is the heat flow rate from the radiator
Assume the freezer operates for 5 hours each day, how much power does it require while operating
In a certain automobile engine with an efficiency of 20.9%, combustion of gasoline in one cylinder releases 510 J of heat. Find the work done by the system of gasoline vapor
Your goal in laboratory is to launch a ball of mass m straight up so that it reaches exactly height h above the top of the launching tube. Find an expression for the acceleration that will earn you maximum points
A man pushing a mop across a floor causes it to undergo two displacements. The first has a magnitude of 150 cm, Find the magnitude and direction of the second displacement
The temperature of 1.3mol of an ideal diatomic gas goes from 20?C to 57?C at a constant volume. What is the change in entropy
A photoflash unit makes a very bright light for a very short time. Discuss differences in the exposure of the film with and without a flash unit. Consider the f-stop and shutter speed in your deliberation.
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