To what value should the launch angle be adjusted
A projectile is launch from the ground level at an angle of 12.0 degrees above the horizontal. It returns to ground level. To what value should the launch angle be adjusted, without changing the launch speed, so that the range doubles?
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You are keeping pace with another runner, at 6 minutes per mile, but are 10 m behind her when she is 100m from the finish line. What constant acceleration do you need to catch her at the finish if she maintains a constant speed?
Determine the thermal efficiency of a heat engine that receives 660kJ of heat from a source at 217 Celcius and produces 280 kJ of net work while rejecting the waste heat to a sink at 27 Celcius.
For the binomial sample sizes and null-hypothesized values of p in each part, determine whether the sample size is large enough to meet the reuquired conditions for using the normal approximation to conduct a valid large sample hypthesis test of t
Initially the nitrogen is at 110kPa and 25 celcius and then it is compressed slowly in a polytropic process during which PV^1.2=constant until the volume is reduced by one-half. Determine the work done on the system and the heat loss.
At a height of about 150km, the atmospheric pressure is 3*10^-6 torr and the temp is 420K. What is the concentration of the atmosphere in molecules per milliliter at 150km?
A company that produces DVD drives has a 12% defective rate. Let X represent the number of defectives in a random sample of 53 of their drives.
Refrigerant-134a is gaining heat at a rate of 4 kw/s as it passes trough the diffuser. Determine the mass flow rate of the refrigerant.
Energy could be taken as heat from the atmosphere(assume 30degrees celcius) and rejected as heat as heat to the Hudson River (10degrees celcius). What is the maximum efficiency of such an engine for the conversion of thermal energy into mechanical
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