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
never [62]
3 years ago
10

If 150 kcal of heat raises the temperature of 2.0 kg of a material by 400 F°, what is the specific heat capacity of the material

?
0.75 kcal/kg ∙ C°
1.35 kcal/kg ∙ C°
0.19 kcal/kg ∙ C°
0.34 kcal/kg ∙ C°
Physics
2 answers:
const2013 [10]3 years ago
6 0

Answer:

this result can approximate 0.34Kcal/kg.ºC

Explanation:

As during the process the material only changes its temperature we use the sensible heat formula

sensible heat formula

Q=m.ce.\Delta t

Data

Q= 150Kcal\\m= 2.0kg\\ce=?\\\Delta t=400\ºF

The options given to us by the unit of temperature is celsius, so we must transform from F to celsius

\ºC=(\ºF-32)/1.8

\ºC=(400-32)/1.8\\\ºC= 204.44\ºC

Now we clear the specific heat of the sensible heat formula

Q=m.ce.\Delta t\\\frac{Q}{m\Delta t}=ce\\\frac{150Kcal}{2Kg.204.44\ºC}=ce\\0.36Kcal/g.\ºC

this result can approximate 0.34Kcal/kg.ºC

Mariulka [41]3 years ago
4 0

it would be 0.338 kcal, which would round off to 0.34.

You might be interested in
A satellite with a mass of 110 kg and a kinetic energy of 3.0 ´ 109 J must be moving at a speed of
djverab [1.8K]

Answer: A satellite with a mass of 110 kg and a kinetic energy of 3.08×10^9 J must be moving at a speed of 7483 m/s.

Explanation: To find the answer we need to know about the kinetic energy of a body.

<h3>How to solve the problem the equation of kinetic energy?</h3>
  • We have the expression for kinetic energy of a body as,

                                   KE=\frac{1}{2}mv^2

  • Given that,

                                   m=110kg\\KE=3.08*10^9J\\

  • We have to find the speed of the satellite,

                               v=\sqrt{\frac{2KE}{m} } =\sqrt{\frac{2*3.08*10^9}{110} } =7.483*10^3 m/s

Thus, we can conclude that, the velocity of the satellite will be 7438m/s.

Learn more about Kinetic energy here:

brainly.com/question/28105739

#SPJ4

8 0
1 year ago
Read 2 more answers
All are examples of electric forces except _________. A. a neutron pushing on another neutron B. an electron pushing on a proton
Contact [7]

Answer:

A) a neutron pushing on another neutron.

Explanation:

Neutrons have no charge, therefore, there is no electric force among them. Protons and electrons on the other hand do have electric charge (electrons negative charge and protons positive charge) that generate electric forces between them that can be repelling forces (if the charges are of the same sign), or attractive forces (if the charges are of opposite signs).

6 0
3 years ago
Which of the following occurs when a covalent bond forms?
Eddi Din [679]

Your answer is...

<em>B) Electrons in valence shells are shared between nuclei.</em>

<em />

Explanation:

The simple definition of a covalent bond is a strong force when two atoms share one or more pairs of electrons.

Popular examples of covalent bonds would be:

Carbon Monoxide (CO)

Methane (CH_{4})

Water (H_{2} O)

4 0
3 years ago
Electromagnetic waves can transfer energy without a(n)
Anna71 [15]
Some waves can travel without a -medium-, a channel like telephone power lines, lenses, or even particles in the air or in water.
7 0
2 years ago
A soccer ball is kicked from point Pi at an angle above a horizontal field. The ball follows an ideal path before landing on the
Nutka1998 [239]

Answer:

A. The horizontal velocity vector points to the right & equals v cos θ.

Explanation:

The motion describes a parabolic path, where the horizontal speed is constant and the horizontal velocity vector always points to the right and equals v*cos θ.

8 0
3 years ago
Other questions:
  • _______ do not have definite size or always take the shape of their container?
    13·2 answers
  • A cart traveling at 0.3 m/s collides with stationary object. After the collision, the cart rebounds in the opposite direction. T
    12·1 answer
  • A long cylindrical rod of diameter 200 mm with thermal conductivity of 0.5 W/m⋅K experiences uniform volumetric heat generation
    15·1 answer
  • A thin spherical shell of radius R has a total charge +Q uniformly distributed over its surface. Of the following distance r fro
    7·1 answer
  • Three liquids that will not mix are poured into a cylindrical container. The volumes and densities of the liquids are
    7·1 answer
  • 6. An earthquake releases two types of traveling seismic waves, called transverse and longitudinal waves. The average speed of t
    12·1 answer
  • I need an answer ASAP .....
    14·2 answers
  • A truck’s engine produces 20,000 N of force. It dumps its load and its mass is reduced to 10,000 kg. What is the acceleration of
    9·1 answer
  • 1) Complète les phrases suivantes en remplaçant
    7·1 answer
  • Explain why white light splits up into the different colours when it goes through a prism
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!