Determine the equivalent resistance in the circuit below. Assume R1 = 5 ohms, R2 = 12 ohms, R3 = 9 ohms, and R4 = 16 ohms

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.