« previous next »

Author Question: If we increase the brightness of violet light shining on a photosensitive surface we also increases ... (Read 35 times)

melina_rosy

  • Hero Member
  • *****
  • Posts: 531
on: Jul 29, 2018
If we increase the brightness of violet light shining on a photosensitive surface we also increases the
 
  A) number of electrons ejected per second.
  B) kinetic energy of the ejected electrons.
  C) threshold frequency.
  D) time lag between the absorption of blue light and ejection of electrons.
  E) none of the above

Question 2

A 400-g piece of metal at 120C is dropped into a cup containing 450 g of water at 15.0C. The final temperature of the system is 40.0C. What is the specific heat of the metal, assuming no heat is exchanged with the surroundings or the cup?
 
  A) 1470 J/(kgK)
  B) 2830 J/(kgK)
  C) 3420 J/(kgK)
  D) 3780 J/(kgK)
  E) 4280 J/(kgK)


carolinefletcherr

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Analogy for How Magnetic Field Strengths Increase Analogy for How Magnetic Field Strengths Increase
Color mixtures of refracted light—additive process. Color mixtures of refracted light—additive process.
Sample Diet for a College-Aged Female Weighing 132 Pounds, Assuming Light to Moderate Daily ... Sample Diet for a College-Aged Female Weighing 132 Pounds, Assuming Light to Moderate Daily ...
Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ... Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ...
Schematic of an IgG molecule: Two heavy and 2 light chains are linked together by disulfide bonds. ... Schematic of an IgG molecule: Two heavy and 2 light chains are linked together by disulfide bonds. ...
Animated Light-independent reactions in CAM plants. Animated Light-independent reactions in CAM plants.
Video: Neurosynapse Animation

For a complete list of videos, visit our video library