Which of the following lenses has at least one plane surface?

a. double-convex lens

b. converging concavo-convex lens

c. double-concave lens

d. plano-convex lens

Describes james chadwickÍs discovery

A. Of the three experiments that are used to confirm the Big Bang theory, which is the most interesting to you and why?

Which describes the elements in any given period of the periodic table? A. They have common chemical properties, such as reactivity. B. They are in the same family. C. Their properties change according to a pattern as you go from left to right l. D.

What should you do if you see lightning while you are outside exercising? Head inside Stay under a tree Lie in the grass Move quickly

A 113 kg man sits on the stern of a 6.3 m long boat. The prow of the boat touches the pier, but the boat isn't tied. The man notices his mistake, stands up and walks to the boat's prow, but by the time he reaches the prow, it's moved 3.

Which best explains why the acoustics underwater affect the Doppler effect? Sound waves can not transfer energy through water. Sound waves can not travel through water. The speed of sound is less in water than in air.

What is the part of the cell that stores food?

2. A circuit consists of a 10.0-ohm resistor, a 15.0-ohm resistor, and a 20.0-ohm resistor connected in parallel across a 9.00-volt battery. What is the equivalent resistance of this circuit? (1) 0.200 12 (3) 4.62 1 (2) 1.95.22 (4) 45.012

What technology makes up the transducer? a. A phased array c. A PET scan b. An x-ray d. A laser

Explain how birthrates and death rates influence the size of population.