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
mrs_skeptik [129]
3 years ago
4

The table shows the specific heat capacities of various substances. An iron block of mass 2kg is heated. Calculate the amount of

energy needed to raise its temperature from 20°C to 30°C. Use the table to help you.
Physics
1 answer:
goldenfox [79]3 years ago
4 0

Answer:

8960 J

Explanation:

specific heat of iron is 448 J/kg.°C

c = Q/m∆T

c -----> specific heat of iron

Q ----> energy

m-----> mass

∆T -----> temperature change

then Q = m∆T . c

= 2×(30-20)× 448

= 8960 J

You might be interested in
Weber theorized that we would eventually get stuck in ______, where we move from one formalized structure to the next, unable to
dsp73

Answer:

The correct answer is

d. An iron cage

Max Weber is well known for developing the theoretical concept of the iron cage

Explanation:

The theory of the iron was first presented by the sociologist Max Weber in the work  The Protestant Ethic and the Spirit of Capitalism.

Here Weber clarified that with the diminishing effect of Protestantism within our social life the capitalist system remained as well as the bureaucratic principles and social structures that came about along with came along with it, such the worldviews and values becomes major controlling factors in socil life which is tantamount to living in a strong house maade of steel

8 0
3 years ago
7) The acceleration of gravity on the Moon is only one-sixth of that on Earth. If you hit a baseball on the Moon with the same e
rusak2 [61]

Answer:

The acceleration of gravity on the Moon is only one-sixth of that on Earth. If we hit a baseball on the moon with the same effort(and at the speed and angle)that we would on earth, the ball would land 6 times as far. The ball on the moon will cover 6 times more distance than Earth.

Explanation:

Speed=distance travelled/Time required speed

Speed=d/t

Acceleration of gravity on earth=9.8 m/s^2

Acceleration of gravity on Moon=1.62 m/s^2

So the maximum height of ball will be the ration of these both gravity.

4 0
3 years ago
What transfer of energy is occurring between magnetism and electricity
ioda
I believe its air particles 
6 0
4 years ago
Just a quick joke but…. Why are apartments called A-P-A-R-T-M-E-N-T-S if they are so close together??????
Dominik [7]

Answer:

why?

Explanation:

Do you need any help on anything else?

4 0
1 year ago
The energy stored by any pair of positive charges is inversely proportional to the distance between them, and directly proportio
denpristay [2]

Answer:

 U = 25 J

Explanation:

The energy in a set of charges is given by

          U = k \sum \frac{q_i}{r_i}

in this case we have three charges of equal magnitude

          q = q₁ = q₂ = q₃

with the configuration of an equilateral triangle all distances are worth

          d = a

          U = k ( \frac{q_1q_2}{ r_1_2 } + \frac{q_1q_3}{r_1_3} + \frac{q_2q_3}{r_2_3} )

we substitute

           15 = k q² (3 / a)

            k q² /a = 5

For the second configuration a load is moved to the measured point of the other two

          d₁₃ = a

The distance to charge 2 that is at the midpoint of the other two is

          d₁₂ = d₂₃ = a / 2

           U = k (\frac{q_1q_2}{ r_1_2 } + \frac{q_1q_3}{r_1_3} + \frac{q_2q_3}{r_2_3})

            U = k q² (  \frac{2}{a} + \frac{1}{a} + \frac{2}{a} )

            U = (kq² /a) 5

substituting

            U = 5 5

            U = 25 J

5 0
3 years ago
Other questions:
  • This procedure has been used to "weigh" astronauts in space: A 42.5 kg chair is attached to a spring and allowed to oscillate. W
    8·1 answer
  • Will Upvote!!!
    13·1 answer
  • How many valence electrons does strontium (Sr) have? 1 2 5 6
    15·2 answers
  • An object is propelled along a straight-line path by a force. If the net force were doubled, the object's acceleration would be_
    11·1 answer
  • What's the mass of a bag of apples
    11·1 answer
  • You feel a static electric shock when free electrons build up on your body then you touch a
    12·1 answer
  • a 45kg box of books is lifted o a bookself 1.75 m above the floor. how much work was done to lift the books?
    9·1 answer
  • 8432.0 L = ? ML (Megaliters)
    13·1 answer
  • Fruits and vegetables should take up half you plate at a meal.<br> A. <br> True<br> B. <br> False
    14·2 answers
  • What is the magnitude of a vector that has the following components: x = 32 m y = -59 m
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!