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The water skier has a mass of 73 kg. Find the magnitude of the netforce acting on the skier when
A) she is accelerating from rest toa speed of 11m/s in 8.0s (she is being pulled by a boat)
B) shelets go of the tow rope and glides to a halt in 21s.
A 245 kg person lays on board that is supported only on the ends and that has a mass of 12.0 kg. what is the force on either side where the board is supported
A balloon of volume 4.4 m3 contains argon gas at a pressure of 4.4 105 Pa and room temperature (20°C). What is the total internal energy of the gas? J
A solenoid of length 4.5 cm and diameter 0.85 cm is wound with 181 turns per cm. The current is decreasing at a rate of 36.6 A/s. What is the induced emf in one of the windings
A ball has a diameter of 3.77 cm and average density of 0.0842 g/cm3. What force is required to hold it completely submerged under water
zorch, an arch enemy of superman, decides to slow earth's rotation to once per 27.0 h by exerting an opposing force at, How long must zorch push with this force to achieve his goal
A transverse wave on a string is described by the following wave function. y = 0.105 sin [(?/12)x + 5?t] where x and y are in meters and t is in seconds. (a) Determine the transverse speed at t = 0.290 s for an element of the string located at x = 1...
A wave pulse travels down a slinky. The mass of the slinky is m = 0.94 kg and is initially stretched to a length L = 7.5 m. What is the speed of the wave pulse
A space craft with a mass equal to .25 x Mmoon is in orbit about the sun with a period of 3 years. What force would the space craft exert on the Earth
To determine the specific heat of an object, a student heats it to 100 in boiling water. She then places the 68.5 object in a 196 aluminum calorimeter containing 135 of water. The aluminum and water are initially at a temperature of 19.5, and are ..
A spherical brass shell has an interior volume of 2.00 x 10-3 m3. Within this interior volume is a solid steel ball that have a volume of 0.86 x 10-3 m3. The space between the steel ball and the inner surface of the brass shell is filled completely w..
A 4µF and 10uF capacitor are connected in series across a potential difference of 40 V. Find the charge on each capaacitor and the potential difference across each
A thyroid cancer patioent is given a dosage of 131I, What faction of the dosage will still be in the patient's thyroid
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