An electric field is set up between two parallel plates, each of area 2.0 m 2, by putting 1.0 μC charge on one plate and a -1.0 μC charge on the other. The plates are separated by 4.0 mm. What is the magnitude of the electric field between the plates at a distance of 1.0 mm from the positive plate?

Three resistors of 12, 12, and 6.0 Ω are connected in parallel. A 12-V battery is connected to the combination. What is the current through the 6.0-Ω resistor?

If the voltage between the plates of a parallel-plate capacitor is doubled, the charge on the capacitor

A 4.0-μF capacitor is charged to 6.0-V. It is then connected in series with a 3.0-MΩ resistor and connected to a 12-V battery. How long after being connected to the battery will the voltage across the capacitor be 9.0 V?

The limiting angle of resolution for the eye is 1.4 × 10 -4 rad. What is the minimum separation between two point sources of light that the eye can distinguish if they are at a distance of 40 m from the observer?

A light ray, traveling parallel to the axis of a thin concave lens, strikes the lens near its midpoint. After traveling though the lens, this ray emerges traveling obliquely to the axis of the lens

An astronomical telescope has an objective of diameter 20 cm with a focal length of 150 cm. The telescope is used with an eyepiece of focal length 3.0 cm. What is the magnifying power of the telescope?

Draw a neat labelled diagram of how the image of a coin placed at the bottom of a container with water in it, appears to an observer.

An object is placed on an optical bench. A lens with a focal length of 15 cm is placed 30 cm from the object. A diverging lens with a focal length of -10 cm is placed 7.0 cm beyond that. Where is the final image formed, relative to the second lens?

A 4.0-cm-tall object is placed 50.0 cm from a diverging lens of focal length 25.0 cm. What is the nature and location of the image?