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
Iteru [2.4K]
2 years ago
9

1 If appliance G is 30 % efficient, and 45J is transferred in total, how much energy is transferred to useful energy

Biology
1 answer:
Tju [1.3M]2 years ago
4 0

Answer:

only 30% of total energy will be useful ..

So, Useful energy =

\frac{30}{100}  \times 45

13.5J energy is useful

You might be interested in
The unit of measurement in an ecological footprint is the _______.
elena-14-01-66 [18.8K]
The unit of measurement in an ecological footprint is the global hectare.
7 0
3 years ago
How does one determine the number of protons, neutrons, electrons in an atom
KengaRu [80]

Remember that the number of electrons are equal to the number of protons, and to find the number of protons you have to look and see the atomic mass of the atom is equal to the number of protons, and to find the number of neutrons you have too subtract the atomic mass to the atomic number.

Example:

You want to find out how many protons, neutrons, and electrons are in Platinum:

  • Atomic number is equal to the number of protons:
  • 78 = 78
  • So platinum has 78 protons and electrons.
  • Subtract atomic mass to atomic number:
  • 195 - 78 = 117 (forgetting about the decimals)

So platinum has "78 protons, and electrons, and has 117 neutrons."

Hope this helps!

5 0
3 years ago
Many scientists agree that the universe is about _____ years old.
Rashid [163]
Many scientists agree that the universe is about 13 billion years old.
3 0
3 years ago
Read 2 more answers
Who long does a seal live for
Korvikt [17]
30 years the age is 45 years old
3 0
3 years ago
Read 2 more answers
A genetic mutation causes disease when the blank the DNA encodes is altered such that it no longer functions properly
Savatey [412]

Answer:

protein

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • What are all the reasons why ketone bodies are produced in the body?
    13·2 answers
  • What are the two main types of ocean currents
    9·2 answers
  • Question 2<br> The solid portion of Earth is made up of oxygen and this element is _____.
    13·1 answer
  • What is a open system ?
    8·2 answers
  • All of the following statements are true. Decide which of the examples of molecular biology give evidence for evolution. Check a
    13·2 answers
  • What are the two ways that carbon enters into the atmosphere?
    14·2 answers
  • Which type of limiting factor affects a large population more than it affects a small population?
    6·2 answers
  • Which is the best evidence that continental plates continue to move?
    14·1 answer
  • How big is the forehead of a chimpanzee
    12·2 answers
  • Why is it important to study people of color and their significance to scientific discovery?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!