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
serg [7]
2 years ago
12

describe the difference between a physical and a chemical change and explain what happens during a chemical reaction

Physics
1 answer:
BARSIC [14]2 years ago
4 0

There are several differences between a physical and chemical change in matter or substances. A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed.

You might be interested in
The name used to describe the range of EM waves
Nimfa-mama [501]

Answer: the electromagnetic spectrum

Explanation:

I’m not sure but I think this is it!

8 0
3 years ago
Apply the concept of density to explain why oil floats on water.
Sauron [17]
Anything less dense than water will float, like oil. Anything more dense than water will sink, like rock.
6 0
3 years ago
Two resistors, of R1 = 3.11 Ω and R2 = 6.15 Ω, are connected in series to a battery with an EMF of 24.0 V and negligible interna
Firlakuza [10]
Part (a):
1- Since the resistors are in series, therefore, the total resistance is the summation of the two resistors.
Therefore:
Rtotal = R1 + R2 = 3.11 + 6.15 = 9.26 ohm

2- Since the two resistors are in series, therefore, the current flowing in both is the same. We will use ohm's law to get the current as follows:
V = I*R
V is the voltage of the battery = 24 v
I is the current we want to get
R is the total resistance = 9.26 ohm
Therefore:
24 = 9.26*I
I = 24 / 9.26
I = 2.59 ampere

Part (b):
To get the voltage across the second resistor, we will again use Ohm's law as follows:
V = I*R
V is the voltage we want to get
I is the current in the second resistor = 2.59 ampere
R is the value of the second resistor = 6.15 ohm
Therefore:
V = I*R
V = 2.59 * 6.15
V = 15.9285 volts

Hope this helps :)
7 0
3 years ago
I need a quick way to answer a question on graphs in physics grade12
DIA [1.3K]
For you to answer a question on graphs, you have to first, identify the variables and coefficients given in the problem. Then, assess the Problem what is required given the <span>variables and coefficients. Lastly, develop a solution that would answer the required variables in the problem.</span>
6 0
2 years ago
What type of energy is energy in the form of motion.
Alisiya [41]

Answer:

the answer is kinetic energy

5 0
2 years ago
Other questions:
  • Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...
    15·2 answers
  • A physics student throws a ball straight up. The student catches the ball in exactly the same place from which it was released.
    15·1 answer
  • Develop a power point presentation to which you explain how convection works by using ocean water as an example. In your present
    13·1 answer
  • Which is happening when humans control the breeding of living things to favor certain desired features?
    15·1 answer
  • Dans un tube en U contenant du mercure ,on verse de l'autre côté de l'acide sulfurique de densité 1,84 et de l'autre côté de l'a
    6·1 answer
  • you push a box across the floor with a force of 30n you it 15 meters in 8 seconds. how much work did you do how much power did y
    5·2 answers
  • Describe how light is used in modern forms of communication.
    5·1 answer
  • The sine of the incident angle is 0.217; the sine of the refracted angle is 0.173. Calculate the index of refraction.
    7·2 answers
  • A 45.0-kg girl stands on a 13.0-kg wagon holding two 18.0-kg weights. She throws the weights horizontally off the back of the wa
    8·1 answer
  • Two waves travel at the same speed, but one has a larger period. What other parameter/s would be affected by this? (Check all th
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!