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
Sergeu [11.5K]
3 years ago
7

Someone help pleaseeee

Physics
1 answer:
SSSSS [86.1K]3 years ago
5 0

Answer:

C. resonating

an object being forced to vibrate at its natural frequency creates resonance

You might be interested in
It is hot outside, but your parents have been sitting outside of school with the car's engine running. The door handle on the ca
shutvik [7]

Answer:

closed

Explanation:

Idkidkidkidkidkidk

4 0
3 years ago
Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.0
Tema [17]

Answer:

841.5 Hz

Explanation:

Given

y = 50 cm = 0.5 m

d = 5.00 m

L = 12.0 m away from the wall

v = speed of sound = 343 m/s

The image of the scenario is presented in the attached image.

When destructive interference is being experienced from 50 cm (0.5 m) parallel to the wall, the path difference between the distance of the two speakers from the observer is equal to half of the wavelength of the wave.

Let the distance from speaker one to the observer's new position be d₁

And the distance from the speaker two to the observer's new position be d₂

(λ/2) = |d₁ - d₂|

d₁ = √(12² + 3²) = 12.3693 m

d₂ = √(12² + 2²) = 12.1655 m

|d₁ - d₂| = 0.2038 m

(λ/2) = |d₁ - d₂| = 0.2038

λ = 0.4076 m

For waves, the velocity (v), frequency (f) and wavelength (λ) are related thus

v = fλ

f = (v/λ) = (343/0.4076) = 841.5 Hz

Hope this Helps!!!

7 0
3 years ago
Read 2 more answers
Tom used 75 N of force to push a box 3 meters across the floor. How much work did he do?
yuradex [85]

Answer:

It must be 225 J.

Explanation:

According to

Work done = Force × distance travelled

                    =  75      × 3

                    = 225 J

This answer is taken so since no angles are stated in the question.

3 0
3 years ago
Suppose you have a cylinder filled with diatomic oxygen (O2) and it is running low. The cylinder is shown above, is made of stee
Rudiy27

Answer:

The number of O₂ molecules that are left in the cylinder is 1.70x10²⁴.

Explanation:

The number of oxygen molecules can be found using the Ideal Gas law:

PV = nRT        

Where:

P: is the pressure = 100 psi

V: is the volume = 10 L

n: is the number of moles =?

T: is the temperature = 20 °C = 293 K

R: is the gas constant = 0.082 L*atm/(K*mol)

Hence, the number of moles is:

n = \frac{PV}{RT} = \frac{100 psi*\frac{1 atm}{14.7 psi}*10 L}{0.082 L*atm/(K*mol)*293 K} = 2.83 moles

Now, the number of molecules can be found with Avogadro's number:

n_{m} = \frac{6.022 \cdot 10^{23}\: molecules}{1\: mol}*2.83 moles = 1.70 \cdot 10^{24} \: molecules

Therefore, the number of O₂ molecules that are left in the cylinder is 1.70x10²⁴.

I hope it helps you!              

3 0
3 years ago
I need help with and english 11 assignment. the assignment is to write 8 well written sentences about your walk to your next cla
Elena-2011 [213]

Answer:

This question can only be answered by you.

Explanation:

This question must be tailored specificly to you. whatever your next class is you must write 8 sentences on your walk to it. You  can try going into detail about who you saw on the walk. where you went.what people were doing in the hallway. Did you look out a window? what did you see? how long did it take you to walk there? do you usually stop at your locker?

Also dont forget to use a colon ( : ): This can be used when listing things

semicolon (;) : is used as a pause (Seperation) in a long sentence.

Try incorperating some of the five senses in your sentences.

Good luck!

3 0
3 years ago
Other questions:
  • A person who weighs 625 N is riding a 98-N mountain bike. Suppose that the entire weight of the rider and bike is supported equa
    13·1 answer
  • What is conduction ​
    10·2 answers
  • Why are all machines not 100% efficient<br> A. Mass<br> B. Gravity <br> C. Friction <br> D. Distance
    12·2 answers
  • I just need some help with these im really struggling with these.
    9·1 answer
  • According to the law of refraction, what is the relationship between the angle of incidence and the angle of reflection
    10·2 answers
  • What acceleration is imparted to a football when the player kicked it with a force of 25 N? mass of football=0.40 kg
    11·1 answer
  • A student was given a sample of crude acetanilide to recrystallize. The initial mass of the the crude acetanilide was 166 mg. Th
    12·1 answer
  • 3. an observer is at the midpoint between two coherent in-phase sources of sound of frequency 780 hz. what is the minimum distan
    6·1 answer
  • Jxjsjsjisisjsjsjsjksiwkskisiiwiiwisiiisikwiiisisiskisisisiisksksis
    15·1 answer
  • When you take your 1900-kg car out for a spin, you go around a corner of radius 55 m with a speed of 15 m/s. The coefficient of
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!