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
AlekseyPX
3 years ago
8

What is true about coal as an energy source

Physics
1 answer:
seropon [69]3 years ago
6 0
Nonrenewable............................
You might be interested in
A 42 Watt light bulb is connected to a 12 volt source of potential
abruzzese [7]

Answer:

The natural medium emanating from the Sun and other very hot sources (now recognised as electromagnetic radiation with a wavelength of 400-750 nm), within which vision is possible.

Explanation:

just the way it is

8 0
4 years ago
When steam condenses
9966 [12]
A is the correct answer
3 0
3 years ago
Read 2 more answers
A farsighted boy has a near point at 2.3 m and requires eyeglasses to correct his vision. Corrective lenses are available in inc
tino4ka555 [31]

Answer:

P = 3.5 D

Explanation:

As we know that convex lens is to be used to make the near point of eye to be correct

So we will have

\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}

here we have

d_i = 2.3 m = 230 cm

d_o = 25 cm

now plug in all values into the formula

-\frac{1}{230} + \frac{1}{25} = \frac{1}{f}

f = 28 cm

now for power of lens

P = \frac{1}{f}

P = \frac{1}{0.28} = 3.5 D

so the power in dioptre is

P = 3.5 D

5 0
3 years ago
A box with a mass of 2 kg accelerates in a straight line
mihalych1998 [28]

Answer: 16N

Explanation:

Given that:

mass of box M= 2 kg

Initial speed V1 = 4 m/s

Final speed V2 = 8 m/s

Time taken T= 0.5 s

Average strength of this force F = ?

Now, recall that Force is the rate of change of momentum per unit time

i.e Force = momentum / time

Hence, F = M x (V2 - V1)/T

F = 2kg x (8 m/s - 4 m/s) / 0.5s

F = 2kg x (4 m/s / 0.5s)

F = 2kg x 8 m/s/s)

F = 16N

Thus, the average strength of this

force is 16 newton.

7 0
3 years ago
A ball is thrown straight upward on the Moon. Is the maximum height it reaches less than, equal to, or greater than the maximum
IgorC [24]
The maximum height on moon is HIGHER than the maximum height on earth
6 0
3 years ago
Read 2 more answers
Other questions:
  • The 0.8-Mg car travels over the hill having the shape of a parabola. When the car is at point A, it is traveling at 9 m/s and in
    12·1 answer
  • What color is the sky?
    7·2 answers
  • if the speed of sound through the air is rounder 80 meters per second what will be the change in temperature of the air​
    10·1 answer
  • Sound
    7·2 answers
  • A parallel-plate capacitor is connected to a battery. The space between the two plates is empty. If the separation between the c
    14·1 answer
  • An electromagnetic wave of wavelength
    13·1 answer
  • Identify some sports or activities you can do to improve your overall health and explain how physical activity can improve your
    12·1 answer
  • Explain the difference between the terms "rotation" and "revolution"
    13·2 answers
  • Which mathematically describes the wave properties of electrons?.
    8·2 answers
  • 5.1 What is the nucleus composed of ?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!