Obtain the focal length of the lens
An object is placed at a distance of 1.5 m from a screen and a convex lens is interposed between them. The magnification produced is 4. What is the focal length of the lens?
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A man dives horizontally and to the right off the end of a 220 kg boat. The boat is initially at rest and the man weighs 110 kg. If the man dives so that his relative horizontal velocity with respect to the boat is 7.0 m/s, determine the magnitude
A rail gun accelerates a projectile from rest by using the magnetic force on a current-carrying wire. The wire has radius r = 5.77·10-4 m and is made of copper having a density of 8960 kg/m3. The gun consists of rails of length L = 1
Find a vector that models the resulting direction and speed of the airplane. Find the ground speed and bearing of the airplane in the wind. Show all steps.
A spherical bowling ball of mass m = 7 kg and radius r = 0.2m is projected along a horizontal bowling alley surface (μ = 0.1) with a linear velocity va= 2.8 m/s but with no angular velocity (ω0 = 0).
Suppose that water at room temperature of 27°C is put into an ideal refrigerator that maintains an inside temperature of -2°C. What is the cost of making 112 lb (50.4 kg) of ice if electricity costs $0.06 per kilowatt-hour?
Methane at 1 MPa, 300 K is throttled through a valve to 100 KPa. Assume no change in kinetic energy and ideal gas behavior. What is the specific entropy generation?
What is the amount of recycle gas (in mol) per 100 kg of P if the concentration of water in the gas stream entering the dryer is 5.20% Draw and label a flow chart and perform degree of freedom analysis.
A differential thermocouple with sensors at the inlet and exit of a pump indicates that the temperature of water rises 0.072 degrees F as it flows through the pump at a rate of 1.5 ft^3/s.
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