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
Studentka2010 [4]
3 years ago
6

What is perfect machine ​

Physics
2 answers:
Jlenok [28]3 years ago
7 0
A perfect machine is when nothing Of the components break over time and last over long periods of use and over long periods of years used!
Fittoniya [83]3 years ago
5 0

Answer:

Explanation:

A machine is which no part of the work done on the machine is wasted, is called an ideal or perfect machine

You might be interested in
A circuit contains two resistors in series. The voltage drop across the first is 10 V. The voltage drop across the second is als
Norma-Jean [14]

Hi there!

Voltage in a series can be expressed by the following:

V_T = V_1 + V_2

In words, the total voltage is equal to the sum of the individual voltage drops in a SERIES circuit.

We can solve for the total voltage:

V_T = 10 + 10 = \boxed{\text{ D. 20 V}}

6 0
2 years ago
5. A current of 3.00 A flows through a resistor when it is connected
viktelen [127]
I think it is D
Hope my answer help you?
7 0
2 years ago
A jewellery melts 500g of Silver to pour into a mould. Calculate how much energy was released as the silver solidified.
irga5000 [103]

When silver is poured into the mould the it will solidify

In this process the phase of the Silver block will change from liquid to solid.

This phase change will lead to release in heat and this heat is known as latent heat of fusion.

The formula to find the latent heat of fusion is given as

Q = mL

here given that

m = mass = 500 g

L = 111 kJ/kg

now we can find the heat released

Q = 0.5 * 111 kJ

Q = 55.5 kJ

So it will release total heat of 55.5 kJ when it will solidify

8 0
3 years ago
What cause earthquakes?
KengaRu [80]
Question; what causes earthquakes? 
Answer; what causes earthquakes are mainly when rocks are underground and then suddenly break along a fault. 
6 0
3 years ago
Read 2 more answers
Earth is about 150 million kilometers from the Sun, and the apparent brightness of the Sun in our sky is about 1300 watts/m2. Us
nalin [4]

Answer:

13 W/m^2

Explanation:

The apparent brightness follows an inverse square law, therefore we can write:

I \propto \frac{1}{r^2}

where I is the apparent brightness and r is the distance from the Sun.

We can also rewrite the law as

\frac{I_2}{I_1}=\frac{r_1^2}{r_2^2} (1)

where in this problem, we have:

I_1 = 1300 W/m^2 apparent brightness at a distance r_1, where

r_1 = 150 million km

We want to estimate the apparent brightness at r_2, where r_2 is ten times r_1, so

r_2 = 10 r_1

Re-arranging eq.(1), we find I_2:

I_2 = \frac{r_1^2}{r_2^2}I_1 = \frac{r_1^2}{(10r_1)^2}(1300)=\frac{1}{100}(1300)=13 W/m^2

5 0
3 years ago
Other questions:
  • Give a physical description of radio waves and compare and contrast it with the frequency, wavelength, energy and wave speed wit
    6·1 answer
  • The angle of reflection is the angle the _____ to the reflecting surface.
    6·2 answers
  • Are mushrooms, producers, consumers, or decomposers?
    7·1 answer
  • Two beams of coherent light travel different paths, arriving at point P. If the maximum destructive interference is to occur at
    6·1 answer
  • Which is an example of speed?
    10·2 answers
  • A series RLC circuit is connected to a 3.80 kHz oscillator with a peak voltage of 3.80 V. It consists of a 3.50 mH inductor, a 2
    8·1 answer
  • A finite resource in the environment that keeps a population from steadily increasing is known as
    13·1 answer
  • A machine has mechanical advantage 2.What does that mean​
    12·2 answers
  • If you have completely polarized light of intensity 150 W/m2, what will its intensity be after passing through a polarizing filt
    10·1 answer
  • Jxjxjfjfjfknfnfnnfmfgmmmmmmmm(xmpqitexsy.)​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!