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Question 1: Qualitatively, if all the are the same brightness, how can you use temperature measurements of the to tell you which bulb is most efficient?
Question 2: Using conservation of energy and continuity of energy flow, if you sum the light power output (light energy each second) and the thermal power output (heat energy each second), how does this relate to the electrical power consumption (required electrical energy input each second)?
The vector shows the weight of the stone. Complete the vector diagram showing another vector that results in zero net force on the stone. Illustrate what is the conventional name of the vector you have drawn?
Refer to the drawing that accompanies this problem. Suppose that the voltage of the battery in the circuit is 4.33 V, the magnitudeof the magnetic field (directed perpendicularly into the plane ofthe paper) is 0.578 T, and the length of the rod be..
A puck slides across a smooth, level tabletop at height H at a constant speed vo. What is the algebraic relationship between the distances x and H
A beam of light incident at 35o to the surface normal from the air side (n = 1.00). If the refracted medium is water (n = 1.33).
A baseball pitcher throws a ball horizontally at a speed of 39.8 m/s. A catcher is 19.0 m away from the pitcher. Find the magnitude of the vertical distance that the ball drops
A bullet with mass m = 20.0 g is fired horizontally towards the center of mass of the disk with a speed of v0 = 500m/s. In unit vector notation, what is the angular momentum L of the bullet with respect to point P just before it collides with the ..
As part of a carnival game, a 0.503-kg ball is thrown at a stack of 15.8-cm tall, 0.383-kg objects and hits with a perfectly horizontal velocity of 10.8 m/s. what is the moment of inertia of the object
Monochromatic light from a distant source is incident on a slit 0.730mm wide. Calculate the wavelength of the light
A boat takes 4h to travel down a 30km river, then 6.0h to return. How fast is the river flowing
In coming to a stop, a car leaves skid marks 85 m long on thehighway. Assuming a deceleration of 4.0 m/s2,estimate the speed of the car just before braking.
A rock climber throws a small first aid kit to another climber who is higher up the mountain. What is the vertical height between the two climbers
A 3.09-kHz tone is being produced by a speaker with a diameter of 0.234 m. The air temperature changes from 0 to 22oC. find the change in the diffraction angle
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