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
Rufina [12.5K]
2 years ago
10

Imagine we cook an egg by immersing it into water which is boiled by an electric heater. The heater utilizes a current I =10 A a

t a voltage V = 120 volts for a time t = 120 s lf the change in energy of the newly-cooked egg over its raw torm is given by ΔEngg = 28.8 kJ, what is the amount of energy wasted in the process?
Physics
1 answer:
tatuchka [14]2 years ago
8 0

Answer:

Q' = 115.2 KJ

Explanation:

Given that

Current I = 10 A

Voltage = 120 V

Time t= 120 s

The energy supplied Q= V I t

Q= 10 x 120 x 120 J

Q= 144 x 1000 J

Q= 144 KJ

The change in the energy ΔEngg = 28.8 kJ

By using energy conservation

Q= Q' +  ΔEngg

Q'=Wasted energy

Now by putting the values in the above equation

144 = Q' + 28.8 KJ

Q' = 115.2 KJ

Therefore the waste energy will be 115 kJ.

You might be interested in
Shotguns are examples of
tankabanditka [31]
The answer would be {B}
6 0
3 years ago
The left face of a biconvex lens has a radius of curvature of magnitude 11.7 cm, and the right face has a radius of curvature of
SIZIF [17.4K]

Answer:

Explanation:

R1 = + 11.7 cm

R2 = - 18.7 cm

n = 1.52

(a) Use lens maker formula

\frac{1}{f}=\left ( n-1 \right )\left ( \frac{1}{R_{1}}-\frac{1}{R_{2}} \right )

\frac{1}{f}=\left ( 1.52-1 \right )\left ( \frac{1}{11.7}}+\frac{1}{18.7} \right )

\frac{1}{f}=\frac{0.52\times 30.4}{218.79}

f = 13.84 cm

(b)

R1 = + 18.7 cm

R2 = - 11.7 cm

n = 1.52

(a) Use lens maker formula

\frac{1}{f}=\left ( n-1 \right )\left ( \frac{1}{R_{1}}-\frac{1}{R_{2}} \right )

\frac{1}{f}=\left ( 1.52-1 \right )\left ( \frac{1}{18.7}}+\frac{1}{11.7} \right )

\frac{1}{f}=\frac{0.52\times 30.4}{218.79}

f = 13.84 cm

5 0
3 years ago
(DESPERATE WILL GIVE BRAINLIST AND THANKS PLZ HURRY)
DaniilM [7]

Answer:

i think its A. hope this helps!

4 0
2 years ago
Read 2 more answers
What is the force that can cause two pieces of iron to attract each other?
Rudiy27

Answer:

B. Magnetic Force

Explanation:

two pieces of irons cannot attract each other unless at least one of them is magnetize. That force is called magnetism.

6 0
3 years ago
Read 2 more answers
What is the resultant displacement? Explain please to
frutty [35]
The resultant<span> is the vector sum of 2 or more vectors. It is the conclusion of adding 2 or more vectors together. If </span>displacement <span>vectors A, B, and C are added together, the result will be vector R.</span>
8 0
3 years ago
Other questions:
  • This can best be explained due to A) density. B) friction. C) gravity. Eliminate D) inertia.
    7·2 answers
  • How much horsepower does a camaro ss have?
    8·2 answers
  • Please help on this question​
    13·1 answer
  • What happens to light that shines on an object but is not transmitted?
    9·1 answer
  • The environment between the outer and inner nuclear membranes is most accurately referred to as the:
    11·1 answer
  • What type of reaction is being shown in this energy diagram?
    12·1 answer
  • The Grand Canyon is more than 400 km long and in some places almost 2 km deep. Which model best represents the main process that
    13·1 answer
  • What the energy transformation of an solar panel?
    13·1 answer
  • Write the examples of unit​
    11·1 answer
  • 8 kg cat is running with a velocity of 4 m/s. What is the cat's momentum?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!