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
Alja [10]
3 years ago
12

The formula shown below is used to calculate the energy released when a specific quantity of fuel is burned. Calculate the energ

y released by a burning sample of fuel if the temperature of 100g of water was raised by 20 °C. (Specific heat capacity of water = 4200J/kg °C)
Physics
1 answer:
mafiozo [28]3 years ago
5 0

Answer: 8400 J

Explanation:

The formula referenced in the question is:

Q=m. c. \Delta T  

Where:

Q  is the thermal energy

m=100g \frac{1 kg}{1000 g}=0.1 kg is the mass  of the water sample

c=4200 \frac{J}{kg\°C}  is the specific heat capacity of  water

\Delta T=20\°C  is the variation in temperature

Solving:

Q=(0.1 kg)(4200 \frac{J}{kg\°C})(20\°C)  

Q=8400 J  This is the thermal energy released

You might be interested in
Define the term potential energy of a body? <br> How is it measured
DENIUS [597]

Answer:

potential energy. noun. the energy of a body or system as a result of its position in an electric, magnetic, or gravitational field. It is measured in joules (SI units), electronvolts, ergs, etcSymbol: E p, V, U, φ Abbreviation: PE.

Explanation:

4 0
2 years ago
Read 2 more answers
Can you make sunglasses from new 3D-glasses???
katen-ka-za [31]
Yes you can make sunglasses from 3d glasses

5 0
3 years ago
Read 2 more answers
Which statement is true for electric field lines?
KiRa [710]
The best answer is D. field lines should always be crossing each other.
8 0
3 years ago
Read 2 more answers
A person jogs eight complete laps around a quarter-mile track in a total time of 13.1 minutes
ExtremeBDS [4]
Speed and velocity have the same magnitudes. The only difference is that speed is a scalar quantity and velocity is a vector quantity. In other words, speed is just a magnitude, while velocity is a magnitude with direction. They're essentially the same.

Let's convert miles to meters and minutes to seconds

1/4 mile = 402.34 meters ( 1 mile = 1609 m)
13.1 minutes = 786 seconds (1 minute = 60 seconds)

Speed is calculated as distance over time, thus,

Speed = (402.34 meters)*8/786 seconds
a.) Speed = 4.1 m./s
b.) Velocity = 4.1 m/s

5 0
3 years ago
URGENT!! <br>Question in attachment. <br>thanks ​
Roman55 [17]

Answer:9

Explanation:beacause

6 0
3 years ago
Read 2 more answers
Other questions:
  • Potential energy is _____ energy. A. heat B. stored C. released
    6·2 answers
  • A 0.060-kg tennis ball, moving with a speed of 5.50m/s , has a head-on collision with a 0.090-kg ball initially moving in the sa
    8·1 answer
  • Can anyone give me the description of the element mercury is positioned on the periodic table of elements and a list of other el
    15·1 answer
  • I NEED HELP ASAP!!!
    9·1 answer
  • Scientific models have two basic types. Please select the best answer from the choices provided T F
    12·2 answers
  • the law of conversation of energy and describe the energy transformations that occur as you coast down a long hill on a bicycle
    13·1 answer
  • It's urgent can someone please help me!!
    8·1 answer
  • Is it possible for a system to have negative potentialenergy?
    11·1 answer
  • How can we measure electromotive force of a battery illustrated answer with the help of circuit diagram
    8·1 answer
  • There is a small hole of radius r in a hollow sphere, which is immersed in a liquid. Upto what maximum depth it can be immersed
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!