Coefficient of kinetic friction-skier and snow
A skier slides horizontally along the snow for a distance of 23 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is µk = 0.030. Initially, how fast was the skier going?
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If the temperature at which a certain compound melts is a random variable with mean value 120 degree Celsius and standard deviation 2 degree Celsius, what are the mean temperature and standard deviation measured in degree Fahrenheit?
Steam at 35 bar and 600 degree K enters a throttling valve that reduces the steam pressure to 7 bar. Assuming there is no heat loss from the valve, what is the exit temperature of the steam and its change in entropy?
Calculate the deltaHrxn for the combustion of glucose (C6H12O6) using deltaHf values. You will have to calculate the deltaHf of glucose using the following information. 6CO2(g)+6H2O(l)->C6H12O6(s)+6O2(g) deltaHrxn=2826 KJ.
Let A be the number of rounds until Lionel wins his first stuffed animal. What is the distribution and parameters of A? Also, find the expected value and variance of A.
In a cogeneration scheme, a Diesel engine-generator is used. The Diesel engine-generator is rated at 2000 kWe. What is the total efficiency of the cogeneration scheme?
A 5.20 x 102 kg hot-air balloon takes off from rest at the surface of the earth. The nonconservative wind and lift forces take the balloon up, doing +9.70 x 104 J of work on the balloon in the process.
If the specific ratio is the same, what is the pressure ratio for the air-standard Brayton cycle that will provide the same efficiency as the Otto cycle?
If the specific ratio is the same, what is the compression ratio for the air-standard Otto cycle that will provide the same efficiency as the Brayton cycle?
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