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
den301095 [7]
3 years ago
12

Please help there is a picture below.

Chemistry
1 answer:
Mila [183]3 years ago
7 0

Answer:

A is its answer

Explanation:

Fan uses electrical energy and makes it to mechanical energy by rotating

Same is with the drill

Trampoline does not use electrical energy

Lamp uses electrical energy but it converts it into light energy and heat energy

So A is the answer

You might be interested in
1. What are three examples of Properties of Matter?
Alona [7]

Answer:

1. liquid, gas, and solid

2. Liquid, solid, and gas particles are different by volume, and shapes they take in containers. Solid is tightly packed, liquid takes the shape of anything, and gas has neither volume or shape

Explanation:

Hope this helps!

5 0
3 years ago
A person's weight changes as he travels from the earth to space, but his mass remains the same.
alina1380 [7]
When a man travels from earth to space, the mass of the person, defined as the amount energy a matter has remains constant. However, when he moves to space, gravity decreases until such time that there is no gravity that acts on the person. Weight thus changes or decreases until the point of state called weightlessness.
7 0
3 years ago
1.Which statement best describes scientific laws
gtnhenbr [62]
In a way, all of the answers could be argued for (for example: in the first option: if the scientists' opinions are understood to be "informed understanding of the causes of events"), but one of the options is the best:
Scientific laws describe specific relationships in nature without offering
an explanation.

The reason why  I think this is true is that many laws are phased too short and too concise to provide comprehensive explanations, instead they describe the relationships that must hold.


One of the options is pplain false:
Scientific laws explain why natural events occur. -"Scientific laws were theories that have been tested, proven, and adopted as laws." - since they are not adopted as laws. 



6 0
3 years ago
The accepted density of copper is 8.96 g/mL. Calculate the percent error of a student’s measurement which resulted in a density
uranmaximum [27]

Answer:

<h3>The answer is 1.12 %</h3>

Explanation:

The percentage error of a certain measurement can be found by using the formula

P(\%) =  \frac{error}{actual \:  \: number}  \times 100\% \\

From the question

actual density = 8.96 g/mL

error = 8.96 - 8.86 = 0.1

We have

p(\%) =  \frac{0.1}{8.96}  \times 100 \\  = 1.1160714...

We have the final answer as

<h3>1.12 %</h3>

Hope this helps you

8 0
3 years ago
g Suppose you are titrating vinegar, which is an acetic acid solution of unknown concentration, with a sodium hydroxide solution
Elza [17]

Answer: The molar concentration of acetic acid in the vinegar is 0.539 M.

Explanation:

The formula used is:

M_1V_1=M_2V_2

where,

M_1 and V_1 are the concentration and volume of base.

M_2 and V_2 are the concentration and volume of an acid.

Given:

Molar concentration of NaOH = 0.1798 M

Volume of NaOH = 30.01 mL

Volume of acetic acid = 10.0 mL

Now putting all the given values in the above formula, we get:

M_1V_1=M_2V_2\\\\0.1798M\times 30.01mL=M_2\times 10.0mL\\\\M_2=0.539M

Thu, the molar concentration of acetic acid in the vinegar is 0.539 M.

4 0
3 years ago
Other questions:
  • Which of the following does not illustrate a complete circuit?
    12·1 answer
  • Which of the following describes the Milky Way Galaxy? an irregular universe containing billion of galaxies a spiral galaxy cont
    6·1 answer
  • Can someone please help me??? Please!!!???
    14·1 answer
  • How many carbon atoms are in the smallest cyclic hydrocarbon?
    14·2 answers
  • Can someone please explain why Agcl is more soluble than Agbr and Agi
    11·1 answer
  • What is the wavelength frequency and energy of a wavelength of 580
    8·1 answer
  • It was found that a reversible inhibitor and a substrate bind an enzyme, but at different sites. The inhibitor was quite potent
    12·1 answer
  • What is an example of conduction
    14·1 answer
  • What time of the year can you see Scorpius
    8·2 answers
  • What Is The Use Of Sulpurdioxide​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!