A monochromatic beam of light has a frequency

of 7.69 * 10^14 hertz. What is the energy of a

photon of this light?

(1) 2.59 * 10^-40 J (3) 5.10 * 10^-19 J

(2) 6.92 * 10^-31 J (4) 3.90 * 10^-7 J

What determines the chemical properties of an element? A. the number and arrangement of the electrons in an atom B. the number of neutrons and protons in an element C. the arrangement of all the neutrons, protons, and electrons D.

Folded mountains are formed at convergent boundaries as a result of lava outflows from pressure pushing up on a plate with a cone on top

Computers are fast and do not make errors when doing calculations. Does this mean that computer models are always correct? Explain your answer.

On a sky coaster (human pendulum) that reaches 10 meters from it's equilibrium position, a man of 120 kg is able to reach a maximum speed of 18m/s 14m/s 1200m/s 11m/s

Electronegativity a. increases across a period and increases down a group. b. decreases across a period and increases down a group. c. increases across a period and decreases down a group. d. decreases across a period and decreases down a group.

Reimbursement means that a client is A. able to apply for healthcare insurance and refunded for a partial sum of the payment plan by the state. B.

Meg runs a 10km race in 45 minutes (0.75 hours). What was her speed in kilometers per hour? a. 22 km/hr b. 7.5 km/hr c. 4.5 km/hr d. 13 km/hr

If you are an astronaut slowly drifting away from the space station, you might be able to drift back to the station by throwing a 555-kg tool rapidly in the direction that you are traveling (away from the station) A. False B. True C. Don't ask me D.

The loss of an electron from a neutral helium atom results in

What happens during the intake and compression strokes of a four stroke engine?