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
defon
3 years ago
8

The output work of a machine compared to the input work is the efficiency of the machine.

Physics
1 answer:
CaHeK987 [17]3 years ago
6 0

Answer:

True

Explanation:

Efficiency of machine is determined by dividing the work output by the work input and normally expressed as a percentage hence the above statement is true. Normally, the efficiency of a machine is not always 100% due to energy losses within machine parts. The energy losses are mainly attributed to friction hence methods of reducing friction within mechanical parts such as oiling and greasing are recommended to achieve higher mechanical efficiency.

You might be interested in
Students who embrace an innate mindset might view their poor performance in math as inevitable or beyond their control
PilotLPTM [1.2K]

Answer:

True

Explanation:

4 0
4 years ago
Read 2 more answers
We can model a lightning bolt as a very long, straight wire. If a lightning bolt carries a current of 30 kA, and you are unfortu
Liula [17]

Answer:

Magnetic field experienced = 4.5 × 10⁻⁴ T

Explanation:

The magnetic field around an infinite straight current-carrying wire at a distance r from the wire is given by

B = (μ₀I)/(2πr)

B = ?

I = 20 KA = 20000 A

r = 8.9 m

μ₀ = magnetic permeability = 1.257 × 10⁻⁶ T.m/A

B = (1.257 × 10⁻⁶ × 20000)/(2π×8.9) = 4.5 × 10⁻⁴ T

8 0
4 years ago
How many amps of current are there in a system with 12 volts and 6 ohms?
Gemiola [76]
V = IR
I = V/R
I = 12/6
I = 2 amps
7 0
3 years ago
Read 2 more answers
If the temperature of a gas is increased by 10x, what will happen to the volume?
xxMikexx [17]

The volume of a gas will increase by ten times if the temperature is increased by ten times.

<h3>Relationship between the volume of a gas and temperature</h3>

The relationship between the volume of a gas and its temperature is explained in Charles' law of gases which states that:

  • The volume of a fixed mass of gas is directly proportional to its temperature provided the pressure of the gas is kept constant.

This means that if the temperature of a gas is increased by any given factor, the volume increases by the same factor proportionally.

Therefore, if the volume of a gas will increase by ten times if the temperature is increased by ten times.

Learn more about gas volume and temperature at: brainly.com/question/18706379

8 0
3 years ago
Rounded to the nearest whole number, how many neutrons, on average, are in an atom of osmium?
andrey2020 [161]

Answer: 114

Explanation:

The mass number of an element gives the sum of the protons and the neutrons inside the nucleus of one atom of that element, while the atomic number of an element gives the number of protons inside one atom of that element.

We can infer the number of neutrons inside one atom of Osmium from its mass number and atomic number.

The atomic number of osmium is 76, so each atom of osmium has 76 protons

The (average) mass number of osmium is 190, so each atom of osmium has (on average) 190 protons+neutrons

So, in order to find the average number of neutrons, we can subtract the atomic number from the mass number:

N=A-Z=190-76=114

4 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the Schwarzschild radius (in kilometers) for each of the following.1.) A 1 ×108MSun black hole in the center of a quas
    5·1 answer
  • Electricity is the movement of _____ from one atom to another along a conductor.
    13·1 answer
  • A lion has a mass of 45 kg. Answer the following questions about it, using correct units. a. The lion runs at a speed of 14.2 m/
    14·1 answer
  • A child pushes her toy across a level floor at a steady velocity of 0.50 m/s using an applied force of 2.0 N. If the weight of t
    5·2 answers
  • What is the smallest particle of the element iron (fe) that can be as iron ?
    9·1 answer
  • Suppose you observe that at night, the air just above the ground feels cooler than the air above it. then in the middle of a sun
    15·1 answer
  • Charlie pulls horizontally to the right on a wagon with a force of 37.2 N. Sara pulls horizontally to the left with a force of 2
    11·2 answers
  • Si está probando u motor para un nuevo modelo de coche ; este es capaz de pasar de 0 a 100 km/h en 7,5 segundos . Si el coche ti
    14·1 answer
  • What was john philip career​
    15·1 answer
  • Reflect on your new experiences, what made you uncomfortable and what encouraged you. Did you learn anything new about yourself
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!