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
spayn [35]
3 years ago
13

What is a machine that continues to work without adding additional energy

Physics
1 answer:
Gwar [14]3 years ago
3 0

Answer:

That would be a perpetual motion machine

Explanation:

You might be interested in
How do you calculate the coefficient of kinetic friction
Semenov [28]

The formula to calculate the coefficient of friction is μ = f÷N. The friction force, f, always acts in the opposite direction of the intended or actual motion, but only parallel to the surface.

HOPE THIS HELPS :)

7 0
3 years ago
Which is true about a surface wave?
sergejj [24]
A  because it doesn't have  properties of transverse waves or longitudinal.
7 0
3 years ago
Read 2 more answers
Calculate the sum of the following numbers to the appropriate number of significant figures.
NeX [460]
2026.8678
first well then you align the decimals together and then go down like you normally do
7 0
3 years ago
Which of the following is a graph of the velocity of an object as it falls fromrest if drag is not ignored? Explain your choice
MariettaO [177]

The air drag is a force that depends on the speed of an object relative to the wind. Under certain conditions, it can be modeled as:

F=-bv

Where b is a constant.

As a falling object reaches a speed so that its weight is cancelled out by the air drag, the object will reach a maximum velocity.

In a speed vs time gaph, the speed would approach the maximum speed like an asymptote.

On the other hand, since the object falls from rest, the initial speed on the graph must be zero.

Taking these considerations into account, the correct graph for the movement of an object that falls from rest if air drag is not ignored, is option B.

7 0
1 year ago
A 200-g block is pressed against a spring of force constant 1.40 kN/m until the block compresses the spring 10.0 cm. The spring
Diano4ka-milaya [45]

Answer:

L = 3.35 m

Explanation:

given,

mass of the block = 0.2 Kg

spring constant = 1.40 kN/m

until spring compressed = 10 cm

inclination of ramp = 60°

now,

initial potential energy of spring = (work done by friction) + (final gravitational potential energy of block)

\dfrac{kx^2}{2} = \mu NL + mg y

\dfrac{kx^2}{2} = \mu mg cos \theta + mg L sin \theta

L = \dfrac{kx^2}{2mg(\mu\ cos \theta + sin \theta)}

L = \dfrac{1400\times 0.1^2}{2\times 0.2 \times 9.8(0.4\ cos 60^0 + sin 60^0)}

L = 3.35 m

4 0
3 years ago
Other questions:
  • An astronaut finds herself in a predicament in which she has become untethered from her shuttle. She figures that she could get
    14·1 answer
  • The Pacific Giant Kelp grows at a rate of 18 in/day. How many centimeters per hour is this?
    10·1 answer
  • What should you do when fueling an outboard boat with a portable tank?
    8·2 answers
  • When a puddle dries up what are the particles really doing
    8·1 answer
  • g If the interaction of a particle with its environment restricts the particle to a finite region of space, the result is the qu
    14·1 answer
  • We cannot consider something to be work unless
    12·2 answers
  • Need help with physics! Please provide explanation.
    12·1 answer
  • What is one exsample of a closed economy​
    5·2 answers
  • The sound level in a certain seat at the movie theater is higher than the level in the surrounding seats. Which wave interaction
    15·2 answers
  • Pls answer fast and correct i will give brainlest who ever gets it correct
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!