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
BARSIC [14]
3 years ago
15

How much heat is needed to raise the temperature of 5g of water by 20oC?

Physics
1 answer:
Ratling [72]3 years ago
5 0
Required Heat = Q

Q = Mass * specific heat of water * change in temp.

Q = 5g * 1g/cal*degC * 20degC

Q = 100 cal of heat is required

To convert calories to Joules,
1 cal = 4.184 Joules

100cal = 418.4 J of heat is needed
You might be interested in
The 75.0 kg hero of a movie is pulled upward with a constant acceleration of 2.00 m/s2 by a rope. What is the tension on the rop
lutik1710 [3]

Use Newton's second law. The net force on the hero is

∑ <em>F</em> = <em>T</em> - <em>m g</em> = <em>m</em> (2.00 m/s²)

where

• <em>T</em> = tension in the rope

• <em>m</em> = 75.0 kg = mass of the hero

• <em>g</em> = 9.80 m/s² = acceleration due to gravity

Solve for <em>T</em> :

<em>T</em> = (75.0 kg)<em> </em>(<em>g</em> + 2.00 m/s²) = 885 N

7 0
3 years ago
Dock walls sometimes have pillars replaced with rubber car tyres.explain how this reduces the possibility of damage what a boat
ra1l [238]
The rubber absorbs the kinetic energy from the impact of a boat hitting the tires
8 0
3 years ago
When the man inside the treadmill steps up, what force pulls home back? In what direction does this force move him?
poizon [28]
These image should help you out

4 0
3 years ago
The condition of a country’s depends on its people’s ability to exchange money for goods and services.
vaieri [72.5K]

Answer;

-Economy

The condition of a country’s economy depends on its people’s ability to exchange money for goods and services.

Explanation;

Economy is the state of a country or region in terms of the production and consumption of goods and services and the supply of money.

An economy encompasses all activity related to production, consumption and trade of goods and services in an area. An economy applies to everyone from individuals to entities such as corporations and governments.

There are four different types of economies; traditional economy, market economy, command economy and mixed economy. Each type of economy has it’s own strengths and weaknesses.


6 0
3 years ago
Read 2 more answers
What does 3F means?<br><br>Please help me with this.....​
Debora [2.8K]

Answer: Fitness, Fun & Friendship

Explanation:

5 0
2 years ago
Other questions:
  • A 7.0- g bullet is fired into a 1.5- kg ballistic pendulum.The
    6·1 answer
  • Moving a Slinky up and down will create a(n) _______ wave.
    8·2 answers
  • The frequency of a given region of the electromagnetic spectrum ranges from 3 × 1016 − 3 × 1019 hertz. Which type of wave is fou
    13·1 answer
  • A man runs for an hour and a half at 8 miles an hour due south. He then continues south on a bus traveling at 55 miles an hour f
    11·1 answer
  • When does fertilization take place
    10·1 answer
  • How long must a simple pendulum be if it is to make exactly one swing per second? (That is, one complete vibration takes exactly
    6·1 answer
  • NEED HELP ASAP!! I AM MARKING BRAINLIEST!!
    9·1 answer
  • Does a more efficient car have a larger or smaller LPK number? Explain how you know..
    12·2 answers
  • The Chair o
    11·1 answer
  • When a rigid body rotates about a fixed axis, all the points in the body have the same
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!