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
Westkost [7]
2 years ago
13

Hola alguien pa hablar!!!!!!!!!!!​

Physics
1 answer:
pentagon [3]2 years ago
4 0

Answer:

I m getting bored? is there anyone? Join Zom Meeting S3X CHÁT

4591664195

7076

You might be interested in
If a machine has an efficiency of 94% and you apply 574J of work, how much work do you get out of the machine
Mariana [72]
<h3>Answer:</h3>

539.56 Joules

<h3>Explanation:</h3>
  • Efficiency of a machine is the ratio of work output to work input expressed as a percentage.
  • Efficiency = (work output/work input) × 100%
  • Efficiency of a machine is not 100% because so energy is lost due to friction of the moving parts and also as heat.

In this case;

Efficiency = 94%

Work input = 574 Joules

Therefore, Assuming work output is x

94% = (x/574 J) × 100%

0.94 = (x/574 J)

<h3>x = 539.56 J</h3>

Thus, you get work of 539.56 J from the machine

7 0
3 years ago
A resonance tube can be used to measured the speed of sound in air. A tuning fork is held above the opening of the tube and stru
LenaWriter [7]

Answer:

330.24 Hz

Explanation:

Given:

Frequency, f = 320 Hz

L1 = 25.8 cm

L2 = 78.4 cm

L3 = 131.1 cm

Let the wavelength be λ

Then, L1 which is the length of the column of air is  λ/4.

λ/4 = 25.8 cm

λ = 25.8 × 4 = 103.2 cm = 1.032 m

Then, speed of sound in air is:

v = λ f

⇒ v = 1.032 × 320 Hz

⇒ v = 330.24 m/s

7 0
3 years ago
Nonmetals in the periodic table have a negative oxidation number. Which statement best explains why?
Tema [17]
They have a negative oxidation number because nonmetals gain electrons, thus making them negatively charged ions (anions). Metals become cations and have a positive charge because they lose electrons.
7 0
3 years ago
An example of constant velocity
pashok25 [27]
Some examples of constant velocity (or at least almost- constant velocity) motion include (among many others): • A car traveling at constant speed without changing direction. A hockey puck sliding across ice. A space probe that is drifting through interstellar space.
4 0
2 years ago
4: Question 2 - 10.0 pts possible
Orlov [11]

Answer:

5. All of the statements are true; non is false

Explanation:

8 0
2 years ago
Other questions:
  • If a fast-moving car making a loud noise approaches and moves past the person, what will happen as the distance between the two
    10·2 answers
  • If an object gains an additional 5 m/s of speed every second, the object is?
    8·2 answers
  • How did the Planck mission help scientists learn about the age of the universe
    8·1 answer
  • WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!
    11·1 answer
  • What is the minimum work needed to push a 920-kg car 310 m up along a 6.5 ∘incline? Ignore friction.Express your answer using tw
    12·1 answer
  • The density of atmosphere (measured in kilograms/meter3) on a certain planet is found to decrease as altitude increases (as meas
    6·1 answer
  • Do the conduction electrons in a copper wire act quantum mechanically or not? Roughly speaking, quantum mechanics comes in when
    7·1 answer
  • A 52–newton bird feeder is tied to a cord, which is attached to a tree branch. Describe the tension force of the rope.
    8·2 answers
  • Which formula describes Boyle's law?
    5·1 answer
  • How can you find the area of a regular room?​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!