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A concave cosmetic mirror has a focal length of 22 . A 4.0 -long mascara brush is held upright 11 from the mirror.
A. Use ray tracing to determine the location of its image in cm
B. Use ray tracing to determine the height of its image in cm
C. Is the image upright or inverted? D. Is the image real or virtual?
Two identical cylinders (except for their volumes) at the same temperature each contain the same kind of gas and the same numberof moles of gas. If the volume of cylinder A is 6 times greater than the volume of cylinder B,what can you say about the r..
A copper bar is moved to the right while its axis is maintained in a direction that is perpendicular to a magnetic field. what is the direction of the magnetic field
When Apollo 11 landed on the moon, the time delay for Neil Armstrong's voice to travel from the moon to Earth would be equivalent to the delay from hearing a speaker 439.5 m away. how far away is the moon
A piece of radium has an activity of 10 mCi. What is the mass of the radium
An airplane is flying with a velocity of 93at an angle of 25 above the horizontal. When the plane is a distance 103 directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
A 260 g block is dropped onto arelaxed vertical spring that has a spring constant of k =2.5 N/cm. The block becomes attachedto the spring and compresses the spring 11 cm before momentarily stopping.
A pendulum has a length L = 1.11m. It hangs straight down in a jet plane about to take off as shown by the dotted line, Calculate the magnitude of the plane's acceleration
Two point charges of +20.0 ?C and -8.00 ?C are separated by a distance of 20.0 cm. What is the intensity of electric field E midway between these two charges
A stationary particle of charge q = 2.4 × 10-8 C is placed in a laser beam (an electromagnetic wave) whose intensity is 2.7 × 103 W/m2. Determine the maximum magnitude of the electric force
Each of the three helicopter rotor blades shown in Fig. 10-67 is5.20 m long and has a mass of 153 kg. The rotor is rotating at 202rev/min. (a) What is the rotational inertia of the rotor assembly about the axis of rotation
A charging RC circuit controls the intermittent windshield wipers in a car. The emf is 12.0 V. What resistance should be used in the charging circuit
The length of a certain wire is doubled and at the same time it's radius is reduced by a factor of 2
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