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
zavuch27 [327]
3 years ago
12

A 2.5-kg book slides horizontally and falls from a shelf 3.0 m above the floor. How much work does the force of gravity do on th

e book as it falls 3.0 m?
Physics
1 answer:
frutty [35]3 years ago
7 0

Answer:

73.5 N

Explanation:

W = PE = mgh = 2.5 * 9.8 * 3.0 = 73.5 N

You might be interested in
it is a science question and the question is that which type of cloud would most likely produce a thunderstorm
Vika [28.1K]
A cumulonimbus cloud most likely would.
4 0
4 years ago
Read 2 more answers
Help me yall it due in a few minutes :((()
vaieri [72.5K]

Answer:

B. blocks 2 & 3.

Explanation:

Block 1 has equal & opposite forces acting on it.

Block 2 has 5N on one side, 3N on the other. It will move in the direction the 5N of force is pushing.

Block 3 has no opposing force.

6 0
3 years ago
How do we know that salt mixing with water is not a chemical change?
taurus [48]

Explanation:

In contrast, dissolving a covalent compound like sugar does not result in a chemical reaction. When sugar is dissolved, the molecules disperse throughout the water, but they do not change their chemical identity.

5 0
3 years ago
Read 2 more answers
An ideal gas in a sealed container has an initial volume of 2.50 L. At constant pressure, it is cooled to 21.00 ∘C, where its fi
goblinko [34]

<u>Answer:</u> The initial temperature of the system comes out to be 147 °C

<u>Explanation:</u>

To calculate the initial temperature of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{V_1}{T_1}=\frac{V_2}{T_2}

where,

V_1\text{ and }T_1 are the initial volume and temperature of the gas.

V_2\text{ and }T_2 are the final volume and temperature of the gas.

We are given:

V_1=2.50L\\T_1=?K\\V_2=1.75L\\T_2=25^oC=(25+273)K=294K

Putting values in above equation, we get:

\frac{2.50L}{T_1}=\frac{1.75L}{294K}\\\\T_1=420K

Converting the temperature from kelvins to degree Celsius, by using the conversion factor:

T(K)=T(^oC)+273

420=T(^oC)+273\\T(^oC)=147^oC

Hence, the initial temperature of the system comes out to be 147 °C

6 0
4 years ago
What symbol would best represent an electric fan in an electric circuit?
ladessa [460]

For this case we have, by definition, that:

Resistance is a component that is responsible for limiting the amount of current that can pass through a circuit, converting excess heat.

Consume energy.

Option A represents a swicth, option B represents a luminaire and option D represents a voltage source.

So, the correct option is C,

Answer:

Option C

3 0
3 years ago
Read 2 more answers
Other questions:
  • Josh starts at a position of x=0 meters at the left side of the front of the classroom. Over the course of the class he walks ba
    14·1 answer
  • The energy emitted from the sun is a product of ________.
    9·1 answer
  • When frequency division multiplexing (FDM) is used to aggregate several modulated channels together, no separation between chann
    7·1 answer
  • If the building absorbed so much heat that it turned into a liquid, then it would have undergone a phase change known as _____.
    5·2 answers
  • Two particles are attracted to each other by the gravitational force between them. Particle 1 has a mass of 12kg, Particle 2 has
    5·1 answer
  • Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0 m/s
    9·1 answer
  • A woman drives a golf ball off the tee to a speed of 28 m/s. The mass of the ball is 45 g and tIf the angle of the flight was in
    6·1 answer
  • What type of wave is a sound wave?
    6·1 answer
  • Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. Each step is of unifo
    7·1 answer
  • The angle of reflection is the angle between the normal line and the _____.A.imageB.mirrorC.reflected rayD.incident ray
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!