Compute the magnification of the image
A dentist uses a small mirror of radius 55 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 20 mm from the tooth, what is the magnification of the image?
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A soccer player applies a force of 72 N to a soccer ball while kicking it. If the ball has a mass of 0.48 kg, what is the acceleration of the soccer ball?
An electron e is released from rest on the central axis of a uniformly charged disk of radius R. Initial acceleration if it is released at distance:
What is the wavelength of a sound having a frequency of 237 Hz travels through air at 485 m/s.
It is then pulled down 6.00 and released. What is the time constant if the ball's amplitude has decreased to 2.80 after 48.0 oscillations?
The nitrogen molecules at any one place in our atmosphere are at the same temperature. How do the root-mean-square speeds of the two molecules compare?
Two point charges each have a value of 30.0mC and are separated by a distance of 4.00cm. What is the electric field midway between two charges?
Two devices with capacitances of 18 µF and 7.4 µF are each charged with separate 120 V power supplies. Calculate the total energy stored in the two capacitors.
A car is driven 155 km west and then 75 km southwest. What is the displacement of the car from the point of origin (magnitude and direction)?
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