What maximum distance is clearly visible
The near and far points of a person are at 40cm and 250cm respectively. Find the power of the lens he/she shoeld use while reading at 25cm. With this lens on the eye. what maximum distance is clearly visible?
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Consider fully developed laminar flow between parallel plate. The heat flux through the walls of the chanel is uniform. Derive the analytical expresion for the fully developed temperature profile, and show that the Nusselt number based on Dh=2D is
Unpolarized light passes through two polarizers. The inensity of light coming out from the second polarizer is S2=33% of the intensity of te unpolarized light S0. What is the angle between the transmission axes of the polarizers.
Calculate the magnitude of the force required to give a 0.145-kg baseball an acceleration a=1.00m/s2 in the direction of the baseball's initial velocity when this velocity has a magnitude of 0.900c.
A pysics lab instructor wants to estimate the time required for physic students to complete a required experiment. From a previous study she found the population standard deviation to be 16 mins.
Steam enters an adiabatic turbine at 10 MPa and 500 °C and leaves at 10 kPA with a quality of 90%. Neglecting potential, kinetic and potential energy effects determine the mass flow rate required for a power output of 5MW.
A 513 - uF capacitor is discharged through a resistor, whereby its potential difference decreases from its initial value of 82.9 V to 20.7 V in 4.43 s. Find the resistance of the resistor in kilohms.
Determine the time dependent temperature distribution in the fluid in the immediate vicinity of the wall for t>t1. Note that the temperature does not change along the plate; it is only changes with time and perpendicular to the plate.
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Question: Identify a true statement about validity as applied to a test. Multiple choice question
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