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A roller coaster seat exerts a normal force of 120N on a 40kg passenger at the apex of a vertical loop. what is the speed of the coaster
A 13-kg block rests on a level floor. A 300-g glob of putty is thrown at the block so that the putty travels horizontally, hits the block, what is the initial speed of the putty
Using the following data for the specific volume of mercury, estimate the error in a temperature reading from a mercury-in-glass thermometer when the actual temperature is 600C
When he was first thinking about relativity (and before he developed his theory), find the your friend's speed relative to your reference frame
In 1989, the Exxon Valdez ran aground and spilled 240,000 barrels of crude oil off the coast of Alaska, leaving a 0.5 mm thick layer of oil covering the waters of Prince William Sound. Using the con
Find the total time in minutes for a class that lasted 2.76 hours, 353 minutes and 45,980 seconds. Please show me every step.
given an electric dipole moment p, in a region of uniform Eo. determine the torque of the dipole moment
When a metal at higher temperature is transfer to water at a lower temperature, heat is inevitably lost to the calorimeter. Will this unmeasured heat loss increase or decrease the calculated value o
a)Calculate the final temperature for Cv,m=3R/2.b)Calculate q for Cv,m=3R/2 .c)Calculate w for Cv,m=3R/2 d)Calculate delta H for Cv,m=3R/2 e)Calculate delta U for Cv,m=3R/2
If 61.9 g of sugar (glucose) is fermented, what is the maximum volume of pure ethanol that could be produced? (density = 0.789 g/mL)
An iron bar 40 cm long is braised to a copper bar 50 cm long and of the same diameter. determine the temperature of the junction point
In ethanol, with an absorbance of 1.210 (no units) at a wavelength of 530 nm. At this wavelength, the extinction coefficient of rhodamine 6G in EtOH is 116,000M^-1 cm^-1. If I have a 0.100 M solutio
A 109-rad dose of radiation is administered to a cancer patient (mass = 73) kg). how much energy is absorbed
The largest fusion bomb ever detonated (called the Tsar Bomba) was tested by the Soviet Union in 1961. If this bomb used the deuterium-deuterium fusion reaction, how many kilograms of deuterium were r
Calculate the pH at the equivalence point for the following titration: 0.10 M HCN versus 0.10 M NaOH. The Kb of CN- = 2.0 x 10-5.
welding machine draws a 18A of current at 240V. When it is inadvertently connected to a 120V outlet, the current in it is 10A. Is the machine's resistance ohmic
A saturated aqueous solution of lead(II) iodate, Pb(IO3)2, contains 3.1 x 10-5 M Pb+2 at 25°C. Assuming an ideal solution, and assuming no reaction of the ions with water, calculate the Ksp of l
A 2.0kg block of wood sits on a table. A 3.0 g bullet, fired horizontally at a speed of 360m/s, find the speed of the block immediately after the bullet exits
Consider the following data and select the best buffer system below to make a buffer with a pH of 10.00.
Consider the pH range for the following indicators and select the most appropriate indicator for the titration of an HCN solution with a NaOH titrant.
In a television set the power needed to operate the picture tube comes from the secondary of a transformer. Find the turns ratio Ns/Np of the transformer
A vacuum cleaner is plugged into a 120.0-V socket and uses 2.4 A of current in normal operation, Find the coil resistance of the motor
An air conditioner removes 5.0 * 105 J/min of heat from a house, What is the air conditioner's coefficient of performance
A copper wire has a 25-m ohm resistance at 20 degrees C. When the wire is carrying a current, What is the change in the wire's resistance
A 4.0 kg ball is traveling at 3.0 m/s and strkes a wall. The 4.0 kg ball bounces off the wall with a velocity of 4.0 m/s. determine the average force on the ball