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A dentist uses a mirror to examine a tooth that is 0.75 cm in front of the mirror. The image of the tooth is formed 14.0 cm behind the mirror.
(a) Determine the mirror's radius of curvature. _________cm
(b) Determine the magnification of the image.
A house painter is standing on a uniform, horizontal platform that is held in equilibrium by two cables attached to supports on the roof. How large is the force exerted by th
A uniform plank of length 5.9 m and weight 212 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support .To what distance x can a person wh
An airplane is flying with a velocity of 90 m/s at an angle of 25 above the horizontal. When the plane is a distance 126 straight above a dog that is standing on level groun
The first part asked for voltage across the capacitor at t=0.011s which is -11V. What is the capacitive reactance? Xc=1/(2pi*f*c) but what is f? Is this the right approach?
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. The intensity level of these sounds
An electron is released from rest in a weak electric field given by -1.9 x 10-10N/C. After the electron has traveled a vertical distance of 1.4 µm, what is its speed? (Do no
Due to concerns about the salt water content in the estuary, the discharge in the channel needs to be varied to mimic tidal effects. This means that for 12 hours a day, the
A gymnast with mass m1 = 49.0 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 119.0 kg and length L = 5.0 m. Each support
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