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
elena55 [62]
3 years ago
10

You are asked to explain what happens to individual atoms when a chemical change takes place in lab you are doing in class. What

is the best explanation?
A. Some are created.
B. They are rearranged.
C. Some are destroyed.
D. Some are destroyed and some are created.
Physics
2 answers:
seraphim [82]3 years ago
7 0

Answer:

whle they cannot be destroyed or created they can be moved around or REARRANGED

Explanation:

B

ss7ja [257]3 years ago
3 0

B. They are rearranged.

The First Law of Thermodynamics states that matter and energy can not be created or destroyed.

You might be interested in
A support crossbeam on a high speed train is made from a titanium rod that has a length of 0.650m when measured by an observer o
Vilka [71]

Answer:

A) The crossbeam is moving relative to the observer on the platform so the height appears contracted.

Explanation:

The observer on the train and the beam are in the same reference frame. That means observer on the train will measure the proper length of the beam not the contracted length . the observer is outside and the plank is in the moving system,it will appear to be moving.

3 0
3 years ago
What is this?<br> Picture
miss Akunina [59]

Answer:

may be upside down alphabet :"T"

Explanation:

8 0
3 years ago
Read 2 more answers
You’ve made the finals of the science Olympics. As one of your tasks you’re given 1.0 g of copper and asked to make a cylindrica
Pani-rosa [81]

Answer:

Length = 2.92 m

Diameter = 0.11 mm

Explanation:

We have m = dl D \ \ \& \ \ \ R = \frac{\rho l}{A} , where:

l is the length

m = 1.0 g = 1 \times 10^{-3} \ kg\\R = 1.3 \ \Omega\\\rho = 1.7 \times 10^{-8} \Omega m\\d = 8.96 \ g/cm^3 = 8960 kg/m^3

We divide the first equation by the second equation to get:

\frac{m}{R} = \frac{d A^2}{\rho}

A^2 = \frac{m \rho}{dR} \\\\A^2 = \frac { 1 \times 10^{-3} \times 1.7 \times 10^{-8}}{8960 \times 1.3}\\\\A^2 = 1.5 \times 10^{-15}\\\\ A= 3.8 \times 10^{-8}   \ m^2

Using this Area, we find the diameter of the wire:

D = \sqrt{\frac{4A}{\pi}}

D = \sqrt{\frac{4 \times 3.8 \times 10^{-8} }{\pi}}

D = 0.00011 \ m = 1.1 \times 10^ {-4} = 0.11 \ mm

To find the length, we multiply the two equations stated initially:

mR = d\rho l^2\\\\l^2 = \frac{mR}{d\rho} \\\l^2 = \frac {1.0 \times 10^{-3} \times 1.3}{8960 \times 1.7\times 10^{-8}}

l^2 = 8.534\\l =   2.92 \ m

8 0
3 years ago
Read 2 more answers
The _____ of a mechanical wave is a direct measure of its energy.
KiRa [710]

I think it's amplitude

6 0
3 years ago
Which subatomic particle has the smallest mass?
spin [16.1K]

Answer:

quark

Explanation:

neutrón= 1.675 x 10-27 kg

proton=1,673 x 10-27 kg

electron=9,11 x 10-31 kg

quark=7,13 - 14,26 · 10−30 kg

3 0
2 years ago
Other questions:
  • A diver can reduce her moment of inertia by a factor of about 3.5 when changing from the straight position to the tuck position.
    12·1 answer
  • Distinguish between concave mirror and convex mirror ​
    7·1 answer
  • If you go back in time to kill your grandfather, you would pop out of existence, but if you pop out of existence your grandfathe
    10·2 answers
  • A box of oranges which weighs 83 N is being pushed across a horizontal floor. As it moves, it is slowing at a constant rate of 0
    7·2 answers
  • A pendulum with a period of 1 s on earth where the acceleration
    11·1 answer
  • Could someone explain to me how to got the answer B, thank you very much​
    5·1 answer
  • Why do yall not hate us country people?
    15·1 answer
  • How has technology changed farming?
    6·1 answer
  • Which property do the elements in each column of the representative elements series of the periodic table have in common?(1 poin
    12·2 answers
  • are their final velocities necessarily equal? explain. yes, the final velocity is the instantaneous velocity at the moment a spr
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!