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What is the steady state rate of heat flow through a pane of glass that is 40.0 cm by 30.0 cm with a thickness of 4.00 mm when the outside temperature of the glass is -10.0oC and its inside temperature is 25.0oC? The thermal conductivity of glass is 0.105 W/(mΩK), the specific heat of glass is 0.180 cal/(gxoC), and 1 cal = 4.190 J.
Discuss what is meant by line spectra and what information can be gathered from a line spectrum plot
When light of wavelength 378 nm falls on a potassium surface, electrons are emitted that have a maximum kinetic energy of 1.9 eV. What is the threshold frequency
Determine the magnitude and direction for the resultant
A pilot having mass M(kg) flies a plane in a vertical loop with a radius of 800m at a constant speed of 500 km/h. Determine the force exerted on the pilot by the seat at both the top and bottom of the loop
A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak
One car mass 750 g is moving 36 km/hr to the right on track collides with a car of mass of 500g, Find the velocity and direction of the heavier car after collision
To withstand "g-forces" of up to 10 g's, caused by suddenly pulling out of a steep dive, fighter jet pilots train on a "human centrifuge." at what speed is the rider moving when she experiences 10 g's
Calculate the ratio of the drag force on a jet flying at 1140 km/h at an altitude of 10 km to the drag force on a prop-driven transport flying at half that speed and altitude.
Monochromatic light strikes a diffraction grating at normal incidence before illuminating a screen 2.17 m away. What is the distance between the two second-order maxima
q1. a mountain climber in the process of crossing between two cliffs by a rope pauses to rest. she weighs 550 n. as
Explain why the VOLTS/DIV knob of an oscilloscope doesn't have to be calibrated and the TIME/DIV button must be calibrated when measuring time-constants
At a rock concert, the engineer decides that the music isn't loud enough. He turns up the amplifiers so that the amplitude of the sound, By what percentage does the intensity increase
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