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
anygoal [31]
3 years ago
8

Old-fashioned pendulum clocks are powered by masses that need to be wound back to the top of the clock about once a week to coun

teract energy lost due to friction and to the chimes. One particular clock has three masses: 4.0 kg, 4.0 kg, and 6.0 kg. They can drop 1.3 meters. How much energy does the clock use in a week?
Physics
1 answer:
Andreyy893 years ago
6 0

Answer:

Energy, E = 178.36 J

Explanation:

It is given that,

Mass 1, m_1=4\ kg

Mass 2, m_2=4\ kg

Mass 3, m_3=6\ kg

Height from which they are dropped, h = 1.3 m

Let m is the energy used by the clock in a week. The energy is equal to the gravitational potential energy. It is given by :

E=(m_1+m_2+m_3)gh

E=(4+4+6)\times 9.8\times 1.3

E = 178.36 J

So, the energy used by the clock in a week is 178.36 Joules. Hence, this is the required solution.

You might be interested in
How does a generator work?
insens350 [35]

An electric generator is a device that converts mechanical energy obtained from an external source into electrical energy as the output.

It is important to understand that a generator does not actually ‘create’ electrical energy. Instead, it uses the mechanical energy supplied to it to force the movement of electric charges present in the wire of its windings through an external electric circuit. This flow of electric charges constitutes the output electric current supplied by the generator. This mechanism can be understood by considering the generator to be analogous to a water pump, which causes the flow of water but does not actually ‘create’ the water flowing through it.

The modern-day generator works on the principle of electromagnetic induction discovered by Michael Faraday in 1831-32. Faraday discovered that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field. This movement creates a voltage difference between the two ends of the wire or electrical conductor, which in turn causes the electric charges to flow, thus generating electric current.

8 0
4 years ago
If the velocity is 50 and the time is 5 seconds what is the acceleration?
disa [49]

Just divide the both, you will get the answer!

does it sound rude?

im sorry for that!

3 0
3 years ago
Please can some one explaine fore me What is work done
olga nikolaevna [1]
In Physics, 'work' has a very clear definition:

It's (strength of a force) times (distance through which the force acts).

'Work' has the units of Energy.

If you push against a shopping cart with 30 newtons of force, and
you keep pushing while the cart moves 4 meters, then you have
done (30 x 4) = 120 newton-meters of work = 120 "Joules". 
5 0
3 years ago
What factor affects sensation
Gnesinka [82]

Answer:

D physiological condition

Explanation:

Sensation and perceptions are complimentary to each other but have different roles within the brain. Sensations are the process of experiencing the world with the five senses and sending that information to the brain. Perceptions are the way we interpret sensations.

8 0
3 years ago
Which measurements are equal to 321 decimeters
vlabodo [156]
You are currently converting Distance and Length units from Centimeters to Feet 321 Centimeters (cm) = 10.5315 Feet (ft) This is a hard one but see if this helps if not let me now and i can try again..
7 0
4 years ago
Other questions:
  • Tala wants to create a sound echo. She can create the echo using a pane of glass or a carpet square. Which one does she choose?
    14·1 answer
  • The orientation of which of the following does not influence the phases of the moon? a. Earth c. Sun b. the moon d. Stars Please
    8·1 answer
  • Pressure increases with depth towards the center of earth. In which layer would you expect pressure to be the greatest.
    10·2 answers
  • What is the maximum number of primary partitions that gpt supports?
    5·1 answer
  • Please help! I dont get it!
    9·1 answer
  • In your own words, describe two conditions that are necessary for an eclipse to occur.
    12·1 answer
  • How do magnets loose their magnetism when stored without keepers​
    15·1 answer
  • What do signal trainees do
    12·1 answer
  • Two balls, ball A and ball B, are dropped from the same height onto the same surface. If ball A rebounds to a higher height than
    15·1 answer
  • If My mom is 40 and my goldfish died what is my favorite color ?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!