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
GaryK [48]
4 years ago
9

elaborate on the difference between a chemical change and a physical change. a) a physical change is irreversible where as a che

mical change is reversible. b) a physical change does form new substances and a chemical change does not break any bonds. c) a physical change rearranges atoms but a chemical change causes a substance to remain the same. d) a physical change does not break any bonds while a chemical change does form new substances.
Physics
2 answers:
Ulleksa [173]4 years ago
6 0

remember the difference in effect between slicing bread and toasting bread, but the option is d

lozanna [386]4 years ago
4 0
I think the correct answer from the choices listed above is option D. The difference between a chemical change and a physical change is lies in the fact that a physical change does not break any bonds while a chemical change does form new substances. Hope this answers the question.
You might be interested in
QUIZZ <br><br>12 + 14 + 66 - 87
svet-max [94.6K]

12 + 14 + 66 - 87

26+66-87

92-87

5

6 0
3 years ago
Read 2 more answers
The two forces acting on a boat or some other floating object _______are and gravity​
lubasha [3.4K]

Answer:

The two forces acting on a boat or some other floating object are buoyancy and gravity

7 0
4 years ago
Read 2 more answers
Question: How is the energy in the food we eat an example of chemical potential energy?
Elanso [62]

Answer: D

Explanation: The chemical bonds in the food store energy that is released when we eat it.

3 0
3 years ago
Place the charge q= 2.10-5c at the origin o of the oxy-axis system. consider two points a(6;0) and b(3;4) on the axes with unit
laila [671]

The work done by the electric field when moving the charge from a to b is 0.0378 J.

<h3>Distance between a and b</h3>

r = √[(a₂ - a₁)² + (b₂ - b₁)²]

r = √[(3 - 6)² + (4 - 0)²]

r = 5 m

<h3>Work done in moving the charge</h3>

W = Fr

W = kq₁q₂/r

W = (9 x 10⁹ x 2.1 x 10⁻⁵ x 1 x 10⁻⁶)/(5)

W = 0.0378 J

Thus, the work done by the electric field when moving the charge from a to b is 0.0378 J.

Learn more about work done here: brainly.com/question/8119756

#SPJ1

4 0
2 years ago
A mass of 5.00 kg pulls down vertically on a string that is wound around a rod of radius 0.100 m and negligible moment of inerti
Vladimir79 [104]

Answer:

The angular acceleration of the rod is 2 rad/s².

(a) is correct option.

Explanation:

Given that,

Mass of string = 5.00 kg

Radius = 0.100 m

Mass of disk = 125 kg

Radius of disk = 0.2 m

We need to calculate the acceleration

Using balance equation

mg-T=ma

Put the value of m

5g-T=5a....(I)

We need to calculate the tension

Using balance equation

T\times r=I\times \alpha

T=\dfrac{I\times\alpha}{r}

T=\dfrac{\dfrac{mr^2}{2}\times\alpha}{r}

T=\dfrac{\dfrac{mr^2}{2}\times\dfrac{v}{r}}{r}

Put the value into the formula

T=\dfrac{\dfrac{125\times(0.2)^2}{2}\times a}{(0.1)^2}

T=250a....(II)

From equation (I) and (II)

255a=5g

Put the value into the formula

a=\dfrac{5\times9.8}{255}

a=0.2\ m/s^2

We need to calculate the  angular acceleration of the rod

Using formula of angular acceleration

\alpha=\dfrac{a}{R}

Put the value into the formula

\alpha=\dfrac{0.2}{0.1}

\alpha=2\ rad/s^2

Hence, The angular acceleration of the rod is 2 rad/s².

4 0
3 years ago
Other questions:
  • On a riding lawn mower how long does it take to cut 5 acres
    13·1 answer
  • What is a solution a special type of mixture
    9·2 answers
  • A train car moving along at 3 m/s runs into another train car at rest on the track. The cars attach together and continue moving
    11·2 answers
  • 1. What is weather?
    9·2 answers
  • Select the correct answer.
    14·2 answers
  • In vacuum all electro magnetic wave have the same
    13·2 answers
  • As radiation is passed through the electrical field (above), it is observed that this radiation does not change direction as it
    14·2 answers
  • Which substance can be separated by physical means and it is not the same throughout.
    11·2 answers
  • 2. A marble is rolling at a velocity of 1.5 m/s with a momentum of 3.0 kg×m/s. What is its mass?
    8·1 answer
  • How do the properties of waves correspond with observations of waves?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!