Magnitude of centripetal acceleration of the car question
A car travels at a constant speed around a circular track whose radius is 2.0 km. The car goes once around the track in 360 s. What is the magnitude of the centripetal acceleration of the car?
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A 0.075 kg toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.33 m/s in a horizontal circle of radius 0.47 m, as illustrated in Figure 6-40. Find the angle the string makes
Assuming the resistance of the resistors to be normally distributed with mean 100 ohms and standard deviation 2 ohms, what percentage of resistors will have resistance between 98 ohms to 102 ohms.
The formation constant for Cu(CN)43- is 2.0 x1030. What is the standard free energy change for the process (in kJ/mol)? (Express your answer to 3 significant figures.)
A simple random sample of size 400 was taken from the population of all manufacturing establishment in a certain stat: 64 establishments in the sample had 100 employees or more. Choose the proper interpretation of the 90% confidence interval for t
If the helix descends 8 ft for every one revolution, determine the speed of the car in t=4 s. Also, how far has the car descended in this time? Neglect friction and the size of the car.
A town has 20, 000 registered voters, of whom 8,800 are democrats. A survey organization takes a simple random sample of 900 registered voters. The upper confidence limit of 95% interval for the sample percentage is what?
The cylinder is subjected to a force of 60 N, which is always directed as shown, determine the speed of the cylinder when t = 2 s. The cylinder has a speed v = 2 m/s when t = 0.
The coefficient of kinetic friction between the sledge and surface is 0.500. What is the mechanical energy lost due to friction?
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