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A student does 1,000 J of work when she moves to her dormitory. Her internal energy is decreased by 3,000 J. Determine the heat during this process. Does she gain or lose her heat?
Suppose you have two equal mass objects both on a gentle incline. One is a glider on an air track while the other is a ball on a straight slope. Explain what type of energy both objects have
A flywheel in the form of a uniformly thick disk of radius 1.23 m, has a mass of 45.1 kg, Calculate the constant torque required to stop it in 1.25 min
On the moon the surface temperature ranges from 397 K during the day to 92.0 K at night. What are these temperatures on the Fahrenheit scale
Two 11 centimeter diameter charged disks face each other, 22 centimeter apart. Both disks are charged to -20 nC. Find what is the electric field strength a point
Your toaster has a power cord with a resistance of 2.2×10?2 connected in series with a 9.9 nichrome heating element. How much power is dissipated in the heating element
A 64kg human sprinter can accelerate from rest to 10 m/s in 3.0s . During the same time interval, a 28kg greyhound can go from rest to 20 m/s. What is the average power output of the human
Waves of frequency 198 Hz and amplitude 1.48 cm move along a 21.0 m string that has a mass of 0.046 kg and a tension of 48.0 N
A helicopter 8.20m above the ground and descending at 4.40m/s drops a package from rest (relative to the helicopter). find the velocity of the package relative to the helicopter
Two glass plates 10cm long are in contact at one end and seperated at the other end by a thread .050 mm in diameter. Light containing two wavelengths 400nm and 600nm is incident perpendicularly. At what distance from the contact point is the next ..
Describe the roots and significance of the Stamp Act controversy. Minimum 120 words.
A stone is thrown from the top a tall building with initial velocity of 25 m/s, directed at an angle of 30 degrees above the horizontal. how tall is the building
Capacitors C1 = 6.10 µF and C2 = 2.95 µF are charged as a parallel combination across a 250 V battery. Calculate the resulting charge on each capacitor
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