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
mestny [16]
3 years ago
14

How much energy will it take to heat a 8kg object with a specific heat capacity of 820J/kg℃ from 15℃ to 50℃

Physics
1 answer:
professor190 [17]3 years ago
8 0

Explanation:

h=mc∆¶

where ∆¶ means change in temperature

h=8×820×(50-15)

=8×820×35

=229600j

=229.6kj

You might be interested in
The record height of a man to date is 8 feet 11 inches​ (107 inches). If all men had identical body​ types, their weights would
Alisiya [41]

Answer:

679.08 lbs

Explanation:

Here it is given that

m\propto h^3

m_1 = Mass of first person = 175 pounds

h_1 = Height of first person = 70 inches

m_2 = Mass of second person

h_2 = Height of second person = 110 inches

\frac{m_1}{m_2}=\frac{h_1^3}{h_2^3}\\\Rightarrow m_2=\frac{m_1h_2^3}{h_1^3}\\\Rightarrow m_2=\frac{175\times 110^3}{70^3}\\\Rightarrow m_2=679.08\ lb

The weight of the second person would be 679.08 lbs

5 0
4 years ago
How big is this restoring force compared with the tensile force stretching the spring?
madam [21]

The restoring force on the spring is found to have exactly the same magnitude as the stretching force. Option D

<h3>What is the restoring force?</h3>

The restoring force is the force that seeks to restore the spring to its equilibrium position. It has the same magnitude as the stretching force but acts in opposite direction.

Thus, the restoring force on the spring is found to have exactly the same magnitude as the stretching force.

Learn more about restoring force:brainly.com/question/12162527

#SPJ1

4 0
2 years ago
Is a negatively ionized lithium paste a conductor or insulator
Elenna [48]

Answer:

A negatively ionized lithium paste is a conductor.

Explanation:

A conductor is a material that conducts electricity. In other words, a conductor has little resistance to the movement of electric charge or electrons when an electric field is applied.

Insulating materials for electricity are those that offer a certain resistance to the movement of electrons or electric current. In other words, an electrical insulator is a material with a low capacity for conducting electricity.

The best conductors of electric current are metals due to the free electron clouds that favor the circulation of electric current through them.

So, <u><em>a negatively ionized lithium paste is a conductor. </em></u>

5 0
3 years ago
Two sheets of polarizing material are placed such that their polarizing axes are 90° to each other and no light passes through t
nekit [7.7K]

Answer:

Explanation:

Polarization In this case angle of incidence is not equal to angle of polarization, hence reflected light is partially polarized and transmitted light is also partially polarized.  by reflection is explained by Brewster's law,  

According to this when unpolarized light incident on glass plate at an angle is called as angle of polarizing the reflected light is plane polarized, and transmitted light is partially polarized. The plane of vibration of polarized light is having plane of vibrations perpendicular to plane of incidence.

4 0
3 years ago
Does an Atom of different elements have different number of protons
Murrr4er [49]
Atoms from two different elements may have the same number of neutrons, but never the same number of protons. The number of protons is unique to the element and represents the atomic number.
3 0
3 years ago
Other questions:
  • A good confirmatory test for free halogen is: Select one: a. their volatility b. their odor c. their color in water solution d.
    12·1 answer
  • Avi, a gymnast, weighs 40 kg. She is jumping on a trampoline that has a spring constant value of 176,400 . If she compresses the
    12·2 answers
  • Given:A=6x-2y B:-4x-8y C:-3x+9y. Commute A+B-C
    5·1 answer
  • WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!
    11·1 answer
  • If the temperature increases in a sample of gas at constant volume, then its. . a. volume increases. b. pressure decreases. c. p
    11·2 answers
  • What is one standards kilogram​
    13·1 answer
  • Nerf this hbhbhbbhbbhbhbhbhbhbhb
    11·2 answers
  • Give me some of the best anime movies !!!!
    15·2 answers
  • write the difference between the fall of a parachute on the earth and its fall on the moon? On what condition does a body have f
    10·1 answer
  • 6. How much heat is absorbed by a persons hand if 100 grams of liquid water at 100°C is poured on his hand? (Assume the final te
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!