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How much heat in kcal must be added to 0.68 kg of water atroom temperature ( 20 C) to raise its temperature to 39 C?______kcal
A quantity of steam ( 450 g) at 115 C is condensed, and theresulting water is frozen into ice at 0 C. How much heat was removed? _______kcal
An electron with kinetic energy 2.20 keV circles in a plane perpendicular to auniform magnetic field. The orbit radius is 26.0 cm. obtain the frequency of circling
Water flows trough a normal garden hose at 2 m/s. If a nozzle at the end of the hose reduces the cross sectional area to 5% of its original value, how fast does the water emerge from the hose nozzle
An 8m, 200 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and ladder makes a 50.0° angle with the ground. How far up the ladder can an 800 N person climb before the ladde..
A pendulum hangs from an inclined wall. Suppose that this pendulum is released at an initial angle of 10 degrees and it bounces off the wall elastically when it reaches an angle of -5 degrees
in amusement park ride magic mountain superman powerful magnets accelerate a car rides rest 45 ms about 100 mih a time
An inductor has inductance of 0.240H and carries a current that is decreasing at a uniform rate of 19.0mA/s. Find the self-induced emf in this inductor
A 3.2-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,045oC is placed on top of a 2.4-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC
The sound of a truck horn, observed when the truck is stationary, is 440 Hz. A drunk is sitting in the middle of the road at night. How rapidly is the truck approaching him, in m/s2
A stunt man whose mass is 70 kg swings from the end of a 3.7-m long rope along arc of a vertical circle. Presume he starts from rest when the rope is horizontal.
you have book a 6 kg which sits on top of book b 15 kg which sits on top of a table 30 kg.a. draw a free body diagram
Consider the 30N weight held by two cables shown below. The left-hand cable is horizontal. What is the tension in the cable slanted
A conducting sphere 10cm in diameter is first charged and left isolated at a potential of 100volts. calculate the charge (in coulombs) on the sphere and on the capacitor after being connected
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