1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Varvara68 [4.7K]
3 years ago
8

You need to measure the brightness of a light bulb using the metric system. In which unit do you express your measurement?

Chemistry
1 answer:
kherson [118]3 years ago
7 0
Candela is the correct answer. In measuring the brightness or luminosity of the bulb and you want to use the metric system, candela is the unit to be used. You are correct that candela is the unit of light intensity. The term candela is the Latin for candle which signifies light.<span> </span>
You might be interested in
Wich has more energy rolling down a hill - a bowling ball or soccer ball? Explain your answer
goldfiish [28.3K]

Answer:

Bowling ball

Explanation:

They are traveling at the same speed, but the bowling ball has more mass.  The bowling ball has more kinetic energy because more force is needed to stop the rolling bowling ball. Two balls with different masses moving at the same speed have different amounts of kinetic energy.

6 0
2 years ago
Read 2 more answers
7g of gold is heated from 17 degrees C to 42 degrees C. How much energy (heat) was used? The specific heat capacity of gold is .
wel
Heat needed=mcθ
=7×0.031×(42-17)
=5.425cal
7 0
2 years ago
Two 10g blocks, one of copper and one of iron, were heated from 300 K to 400K (a temperature difference of 100 K).
vova2212 [387]

Energy absorbed by Iron block E (iron) = 460.5 J

Energy absorbed by Copper block E (Copper) = 376.8 J

<u>Explanation:</u>

To find the heat absorbed, we can use the formula as,

q = m c ΔT

Here, Mass = m = 10 g = 0.01 kg

ΔT = change in temperature = 400 - 300 = 100 K = 100 - 273 = -173 °C

c = specific heat capacity

c for iron = 460.5 J/kg K

c for copper = 376.8 J/kg K

Plugin the values in the above equation, we will get,

q (iron) = 0.01 kg × 460.5 J/kg K × 100 K

            = 460.5 J

q (copper) = 0.01 kg ×  376.8 J/kg K × 100 K

                 = 376.8 J

3 0
3 years ago
What is the average speed of a car that travels 540 miles in 6 hours?
Vitek1552 [10]
90 miles per hour. just divide 540 by 6
3 0
2 years ago
Read 2 more answers
Explain the five economic benefits of water​
mario62 [17]

Answer:

Improved water supply and sanitation and improved water resources management boost countries' economic growth and contributes greatly to poverty eradication. ... National economies are more resilient to rainfall variability, and economic growth is boosted when water storage capacity is improved

Explanation:

3 0
3 years ago
Other questions:
  • Which of the following is an example of how a scientist might use a model?
    5·1 answer
  • Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas fo
    11·1 answer
  • What is the attractive force that occurs between the sun and the earth called? friction magnetism weight gravity
    6·2 answers
  • What can you conclude from the fact that electrons orbit far away from atomic nuclei?
    11·1 answer
  • How many valence electrons are these ​
    13·1 answer
  • Water is produced from the reaction of hydrogen and oxygen gas, according to the equation below. What is the excess reactant in
    11·2 answers
  • The work function of an element is the energy required to remove an electron from the surface of the solid. The work function fo
    10·1 answer
  • What Happens When extra Solute is added to unsaturated ,saturated and supersaturated solution​
    11·1 answer
  • Which is the best example of the law of conservation of energy?
    13·2 answers
  • Acetone (nail polish remover) has a density of 0.7857 g &gt;cm3.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!