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
Novay_Z [31]
3 years ago
14

How much work do you do on a 15 N book in lifting it straight up for a distance of 0.40 meters?

Physics
1 answer:
astra-53 [7]3 years ago
7 0

Answer:

Work done, W = 6 J

Explanation:

It is given that,

Force of gravity acting on the book, weight of the book is 15 N

We need to find the work done in lifting the book straight up for a distance of  0.4 meters.

The weight of the book is acting in downward direction and the book is lifted straight up, it means angle between them is 180 degrees. Work done is given by :

W=Fd\cos180\\\\W=15\times 0.4\times \cos180\\\\W=-6\ J

So, the magnitude of work done in lifting the book is 6 joules.

You might be interested in
Which of the following is not a reason that coral reefs are important?
Brut [27]
My Answer: They contain a high diversity of organisms.

Hope I helped! :D
3 0
3 years ago
Which statements describe the Mercalli scale? Check all that apply.
konstantin123 [22]
<h3><u>Full question:</u></h3>

Which statements describe the Mercalli scale? Check all that apply.

A. This scale measures seismic waves based on their size.

B. This scale rates an earthquake according to how much damage it causes.

C.This scale produces a single rating for earthquakes that reach the surface.

D. This scale uses Roman numerals to rank the damage caused by an earthquake.

E.This scale measures the magnitude of an earthquake based on the size of seismic waves.

<h3><u>Answer:</u></h3>

The Mercalli scale : This scale rates an earthquake according to how much damage it causes and This scale uses Roman numerals to rank the damage caused by an earthquake.

<h3><u>Explanation:</u></h3>

The Modified Mercalli scale is intended to illustrate the consequences of an earthquake, at a contracted station, on tangible characteristics, on modern fittings and human beings.

The Modified Mercalli Intensity value ascribed to a particular site subsequent an earthquake has an extra significant means of severity to the nonscientist than the magnitude because intensity assigns to the outcomes really encountered at that position. This scale is comprised of 12 growing levels of intensity, denoted by Roman numerals, arranging from gradual shaking to catastrophic impairment.

3 0
3 years ago
What happens to potential energy when a skier goes down the hill? <br> A. Decrease <br> B. Increase
luda_lava [24]

Question: What happens to potential energy when a skier goes down the hill?

Answer: Decrease

Explanation: As the skier begins the descent down the hill potential energy is lost and kinetic energy is going to start acting

question answered by

(jacemorris04)

4 0
3 years ago
A singer raises his pitch one octave. what quality of the sound wave has changed?
Keith_Richards [23]
I think the amplitude changed 
3 0
3 years ago
a bear has a mass of 500kg and 100,000 J of mechanical kinetic energy. what is the speed of the bear?
3241004551 [841]

Answer: v = 20 m/s

Explanation: Solution:

Use the formula of Kinetic Energy and derive for v:

KE = 1/2 mv²

To find v:

v = √ 2 KE / m

  = √ 2 ( 100000 J ) / 500 kg

  = √ 400 m/s

  = 20 m/s

7 0
3 years ago
Other questions:
  • What is the momentum of a 50-kilogram ice skater gliding across the ice at a speed of 5 m/s? (1 point)
    7·2 answers
  • When performing an.experiment similar to Millikan's oil drop, a student measured the following load magnitudes: 3.26x10 ^-19 C 5
    12·1 answer
  • A student drew the following model:
    5·2 answers
  • How does the frequency of sound relate to its pitch?
    5·1 answer
  • Please help answer #14!!!!!!!
    8·1 answer
  • In orbit, gravity:
    9·1 answer
  • A wave is traveling through a string and six waves pass a point in three seconds what is the frequency of the wave
    8·1 answer
  • What name is given to the property of an object to resist changes in motion
    5·1 answer
  • I NEED HELP!!! PLS HELP ME MARK U BRAINLIEST!!
    7·1 answer
  • 0.5-lbm of a saturated vapor is converted to asaturated liquid by being cooled in a weighted piston-cylinder device maintained a
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!