The batteries are 1.5 VDC and each lamp has a resistance of 1.1 ohm. When the switch is closed, what is the current
through each lamp and what is the power dissipated in each lamp?

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.

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?