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
FromTheMoon [43]
3 years ago
8

What element are the cores of massive stars made of when a supernova occurs?

Physics
1 answer:
Studentka2010 [4]3 years ago
8 0
I think its C. Oxygen 
You might be interested in
A helium-filled balloon occupies a volume of 15 cubic meters at sea level. the balloon is released and raises to a point in the
Elena L [17]

According to Boyle’s law, For a fixed amount of an ideal gas kept at a fixed temperature, P (pressure) and V (volume) are inversely proportional.

Therefore,

P_{1} V_{1} =P_{2} V_{2}

Given P_{1} = 1 atm , V_{1} = 15 \ cubic \ meter and P_{2} = 0.75\ atm.

Thus,

V_{2} = \frac{P_{1}\times V_{1}  }{ P_{2} } = \frac{1\times 15}{0.75} =20 m^3

5 0
3 years ago
When it comes to how ray lines are drawn, what makes the convex lens and concave mirror similar to each other?
Advocard [28]

Answer:

Convex lens and convex mirrors are similar that

1. They have the same image characteristics at various object positions

2. They possess a positive focal length

3. Both their ray lines converge to a particular focal point

4 0
3 years ago
Plz answer this! I am stumped
Gwar [14]
MgCl2
Mg = magnesium
Cl = chlorine

Magnesium + chlorine = magnesium chloride.

This is because compounds are always written with the METAL FIRST and the NON METAL SECOND. the non metal ends in - ide when it reacts with a metal.

So ur answer would be magnesium chloride. :)
6 0
4 years ago
How do you find the change in potential energy
ratelena [41]

P.E = mgh

This is the formula for potential energy.

This is where m is mass, g is the acceleration due to gravity, and h is height.

All you have to do is multiply all these numbers together.

3 0
3 years ago
An infinite line of charge with linear density λ1 = 6 μC/m is positioned along the axis of a thick insulating shell of inner rad
Anna11 [10]

Answer: λ2= 2.34 * 10^-6 C/m

Explanation: In order to calculate the value of the  linear charge density of the insulating shell we have to multiply ρ* Volume of the hollow cylinder, so

Volume of cylinder:2*π*b*L *(b-a)  where (b-a) is the thickness, then

λ2=Q/L = 634 *10^-6 C/m^3* 2*π*0.042 m*(0.042-0.26)== 2.34 μ C/m

5 0
3 years ago
Other questions:
  • In an arcade game a 0.099 kg disk is shot across a frictionless horizontal surface by compressing it against a spring and releas
    10·1 answer
  • When you push something what is that force called
    8·1 answer
  • What is the basic unit for volume
    14·2 answers
  • How far will a runner travel if she had an average speed of 10 km/hour and runs for 2.1 hours?
    13·2 answers
  • Ice floats in water at 0°C. Why is this an example of physical equilibrium? a)The system is closed; nothing leaves the system. b
    15·1 answer
  • Which colors are contained in white light?
    7·2 answers
  • Suppose you discovered a new element with 120 protons and 2 electrons in its outer lever. In what group does this new element be
    5·2 answers
  • Explain the steps of electric power transmission
    11·1 answer
  • Can someone see if it's right? thank you. ​
    13·1 answer
  • Give an example of how a bicycle rider would accelerate? Explain the three different ways a bicyclist could
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!