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
abruzzese [7]
3 years ago
9

Why is copper a pure substance

Physics
1 answer:
belka [17]3 years ago
5 0

Any true element (including copper) is by definition a "pure" substance. As there are no other elements in it, if you were to include any other elements it would become a compound or mixture of elements.

You might be interested in
Why is gravitational acceleration almost always a factor in determining pressure?
Scorpion4ik [409]

Explanation:

Newton's law of universal gravitation states that every object attracts every other object with a force. For any two objects, this force is directly proportional to the mass of each object. The greater the masses, the greater the force of attraction between them. Newton also deduced that this force decreases as the square of the distance between the centers of the objects increases. The farther away the objects are from each other, the less the force of attraction between them.

7 0
3 years ago
Since force is dp/dt, the force due to radiation pressure reflected off of a solar sail can be calculated as 2 times the radiati
QveST [7]

Answer:

8.67×10⁻⁶ N/m²

Explanation:

p = Momentum of a photon

E = Energy of a photon

c = Speed of light

I = Intensity of light

Force = dp/dt

p=\frac{E}{c}

\\\Rightarrow F=\frac{\frac{dE}{dt}}{c}

As given in question

F=2\frac{\frac{dE}{dt}}{c}

Now F/A = Pressure

P=\frac{2I}{c}\\\Rightarrow P=\frac{2\times 1300}{3\times 10^{8}}\\\Rightarrow P=8.67\times 10^{-6}\ N/m^2

∴ Magnitude of the pressure on the sail is 8.67×10⁻⁶ N/m²

4 0
4 years ago
check the file.........................................................................................................
White raven [17]

What is meant by the number of complete oscillation made by an oscillating body in 10 seconds is 500 complete oscillations is that the  frequency of the oscillating body is 50Hz

<h3>What is frequency?</h3>

Frequency of an oscillating body can be defined as the number of complete oscillations per unit time

Frequency is measured in hertz (Hz).

Also, the frequency of 1Hz is one oscillation per second.

frequency = number of oscillations/ time taken

frequency = 500/10 = 50 Hz

Thus, what is meant by the number of complete oscillation made by an oscillating body in 10 seconds is 500 complete oscillations is that the  frequency of the oscillating body is 50Hz

Learn more about frequency here:

brainly.com/question/1199084

#SPJ1

6 0
2 years ago
How many electrons will there be in 5 coulombs of charge?
zysi [14]
There's no physics or electronics to this question.
It's just arithmetic.

The last part of the question TELLS you how many 'coulombs per electron'.

If you just flip that fraction (divide ' 1 ' by it, take its reciprocal), then
you'll have 'electrons per coulomb',  and 5 of those will answer the question.

I got 31,250,000,000,000,000,000 .  I could be wrong.  You should check it.
7 0
3 years ago
A rectangular coil with sides 0.130 m by 0.250 m has 513 turns of wire. It is rotated about its long axis in a uniform magnetic
Sonbull [250]
Voltage = N * Δ(BA)/Δt 
<span>BA = 0.57*0.16*0.22 = 2.0064e-2 </span>
<span>N = 505 </span>
<span>115/505 = Δ(BA)/Δt = 23/101 </span>
<span>When the top of the coil rotates to the bottom (1/2 half cycle) BA changes from max to min and when the bottom rotates back to the top BA changes from min to max. So Δ(BA) is twice per cycle </span>
<span>So 2*101Δ(BA)=23Δt and Δt = 1/f </span>
<span>202*2.0064e-2/23 =Δt = 1/f => f =5.675Hz</span>
3 0
3 years ago
Other questions:
  • Large helium–filled balloons are used to lift scientific equipment to high altitudes. What is the pressure inside such a balloon
    6·1 answer
  • Why is my blood coming out cold?
    11·1 answer
  • The solar system is 25,000 light years from the center of our Milky Way galaxy. One light year is the distance light travels in
    13·1 answer
  • The small piston of a hydraulic lift has a cross-sectional of 3 00 cm2 and its large piston has a cross-sectional area of 200 cm
    14·1 answer
  • Why does a shaded-pole motor run at constant speed?
    8·1 answer
  • Space objects that are small chunks of rock and debris that are smaller than 1 km
    10·2 answers
  • If the magnets are brought close together, they will
    14·2 answers
  • What is the total distance that Mr.Watson travels every day?
    7·1 answer
  • What is the unit for electrical power?
    13·2 answers
  • Itzel travels south 4 miles and then goes east 2 miles and then north 10 miles. What is her displacement? Round your answer to t
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!