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
labwork [276]
2 years ago
15

How much thermal energy is required to raise the temperature of 5 kg of water 50℃? The specific heat of water is 4168 J/kg*C.

Physics
1 answer:
sasho [114]2 years ago
3 0

Answer/solution:

Given :

Mass =5kg

T 1 =20 C,T 2  =100 ∘C

ΔT=100−20=80 ∘C

Q=m×C×ΔT

where C= specific heat capacity of water

=4200J/(kgK)

Q=5×4200×80

=1680000 Joule.

=1680KJ

You might be interested in
A forklift lifts 5 boxes from the ground to a height of 2 meters (m). The boxes push down with a force of 1000 newtons (N). How
Nata [24]
Hello!

Answer:

2000 J

Explanation

Work equation is expressed as:

W=F.d.Cos \alpha

Where:

F: Applied force
d: traveled distance
α: Angle between the direction of the force and the direction of the movement. (in this case, both of the direction are the same, so the angle is 0°)

By substituting:

F=1000N.2m.Cos(0)=2000N.m=2000 J

Have a nice day!
8 0
3 years ago
You are riding your bike at 9 km/h twn minutes later your speed is 6 km/h
gtnhenbr [62]

De-celleration because speed is lower as time goes on


5 0
3 years ago
Read 2 more answers
175 in expanded form​
hjlf

Answer:

In expanded notation the answer is 100,70 5

Explanation:

Hope this helps

4 0
3 years ago
Which apparatus Is used to determine the volume of a small block of unknown material
Aleks04 [339]

Options are;

A: measuring cylinder, metre rule

B: measuring cylinder, stopwatch

C: metre rule, balance

D: metre rule, stopwatch

Answer:

A: measuring cylinder, metre rule

Explanation:

Usually, when measuring volume of a small material, we make use of a piece of laboratory apparatus known as measuring cylinder which is also known as graduated cylinder.

Since it is a graduated cylinder, it means we will make use of metre rule.

Thus, the correct option is option A.

8 0
3 years ago
Which of the following is the reason why the magnetic flux through the bracelet is changing?
charle [14.2K]

Answer:

a. The magnitude of the magnetic field is changing.

b. The magnetic field is changing direction with respect to the bracelet.

c. The bracelet is moving in the magnetic field.

Explanation:

Magnetic flux is a measure of the total magnetic field that passes through a given area. The value of the flux depends on the magnitude of the magnetic field, the area it crosses and its orientation relative to the magnetic field. Therefore, all three reasons are valid.

4 0
3 years ago
Other questions:
  • What is happening in the picture?
    13·2 answers
  • How will the frequency of a wave appear to change if the source of the wave is moving toward an observer
    14·2 answers
  • What helps determine how easily magma flows?
    6·1 answer
  • The __________-second rule applies to any speed in ideal weather and road conditions.
    9·1 answer
  • Examples of angular motion<br>​
    13·2 answers
  • In a simple machine, the energy input is 120 J. If the efficiency of the machine is 80%, calculate the energy output
    12·1 answer
  • A bus travels north on some busy city streets for 2.5 km, and a trip
    14·1 answer
  • Kyle runs 20 m north, 20 m west and then 20 m south, what is Kyles’s total displacement?
    9·1 answer
  • A 20 cm square frame that can rotate about the 00' axis is placed in a homogeneous magnetic field with 0.5T induction directed v
    15·1 answer
  • One reason the landscapes on the moon do not change as fast as earth's landscapes is because:_____.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!