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
kotykmax [81]
3 years ago
9

The core of a star must be at temperature of _____ degrees Celsius for hydrogen fusion to take place. 10,000 100,000 1,000,000 1

0,000,000 100,000,000
Physics
1 answer:
disa [49]3 years ago
6 0
The core of a star must be at the temperature of 10,000,000 degrees Celsius for hydrogen fusion to begin. 
You might be interested in
If an electric current of 8.50 A flows for 3.75 hours through an electrolytic cell containing copper-sulfate (CuSO4) solution, t
muminat

Answer:

75.5g

Explanation:

From the ionic equation, we can write

CU^{2+}+SO^{2-}_{4}\\

next we find the number of charge

Note Q=it

for i=8.5A, t=3.75 to secs 3.75*60*60=13500secs

hence

Q=8.5*13500\\Q=114750C

Since one faraday represent one mole of electron which equal 96500C

Hence the number of mole produced by 114750C is

114750/96500=1.2mol

The mass of copper produced is

mol=\frac{mass}{molar mass} \\mass=mole*molar mass\\mass=1.2*63.5\\mass=75.5g

Hence the amount of copper produced is 75.5g

7 0
3 years ago
Read 2 more answers
An object travels at a speed of 7500 cm/sec . how far will it travel in kilometers in one day
DiKsa [7]

Answer:

6480 km

Explanation:

The speed of the object is

v = 7500 cm/sec

We need to convert centimetres into kilometers and seconds into days. We have:

1 cm = 1\cdot 10^5 km

1 s = \frac{1}{60\cdot 60 \cdot 24}d

Using these conversion factors, we find:

v=7500 \frac{cm}{s} \cdot 1\cdot 10^{-5} \frac{km}{cm}\cdot (24)(60)(60) \frac{s}{d}=6480 km

3 0
3 years ago
What’s the power if a student does 2240j of work for 2.8 seconds
Alex787 [66]

Answer:

800 Watts

Explanation:

Power = Work/time

Working in SI units, Power = Watts, Work = Joules, Time = seconds.

Power = 2240J/2.8s = 800 Watts.

7 0
3 years ago
Suppose Group A runs their experiment 3 times and calculates that the best estimate of the distance slid by red blocks is 15 + 3
Alex73 [517]
Sorry I just need points
7 0
3 years ago
Answer 4 and I’ll give brainlist
Sedbober [7]

Answer:

Answer C

Explanation:

The closer two masses are, the greater the gravity force between them.

This is shown in the formula

Fg = GMm/R²

Smaller distance R means greater force Fg

4 0
3 years ago
Other questions:
  • What do microwaves have in common with light waves?
    10·2 answers
  • A 4 kg and 6 kg bowling ball are dropped from the same height at the same time. The two balls strike the ground at the same time
    14·2 answers
  • A commuter airplane starts from an airport and takes theroute. The plane first flies to city A, located 175 km away in a directi
    11·1 answer
  • Which is the equivalent resistance of the circuit<br><br> shown below?
    11·1 answer
  • A mass is hung from a spring and set in motion so that it oscillates continually up and down. The velocity v of the weight at ti
    11·1 answer
  • Based on the table above, _______ planets are made of the same things as _______ moons.
    6·1 answer
  • A 10 kg block is attached to a light cord that is wrapped around the pulley of an electric motor, as shown above. If the motor r
    9·1 answer
  • X=Y=MC scourer that would be the answer for you mam or sir
    14·2 answers
  • How much energy must be absorbed by water with a mass of 0.5 kg in order to raise the temperature from 30°C to 65°C? Note: Water
    15·1 answer
  • What type of foods do bodyguards eat give 5 examples
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!