All categories

3 years ago

I need it now aaaasssssaaaappp!!!!

Physics

1 answer:

Vera_Pavlovna [14]3 years ago

5 0

A) Pitch depends on the frequency of a sound wave. The higher the pitch, the higher the frequency and the lower the pitch, the lower the frequency. Sound waves have different pitches due to varying frequency levels.

B) Sound is created as the pen vibrates. This vibrations also interacts with the air atoms and molecules, causing them to vibrate too, therefore, creating sound waves. The reason the brain grows annoyed at this continual sound is because the brain will focus on this sound only, causing the brain to go into overdrive, creating annoyance.

C) Sound waves are travelling vibrations of particles. Space does not have any atoms or particles for the sound vibrations to interact with, therefore creating zero sound waves to travel.

Hope this helps!! :))

You might be interested in

Human activities can have positive and negative effects on the environment. Humans can benefit natural areas by

svp [43]

The answer would be D , the rest are ways humans basically destroy nature

4 0

4 years ago

A person slaps her leg with her hand, which results in her hand coming to rest in a time interval of 2.75 ms from an initial spe

bazaltina [42]

Answer:

1350N

Explanation:

$2.75 ms = 2.75*10^{-3}s$

The force exerted on the hand would be the momentum divided by the duration of contact.

As the hand is coming to rest, final velocity would be 0

$F = \frac{\Delta P}{\Delta t} = \frac{m(0 - v)}{\Delta t} = \frac{1.65*(2.25 - 0)}{2.75 * 10^{-3}} = -1350 N$

The magnitude of the force would be 1350N

5 0

3 years ago

Select the statements that describe a vector. Check all that apply.

DerKrebs [107]

By definition, vectors are quantities that have magnitude (positive or negative) and direction.
Graphically, they are illustrated by directed line segments, with arrows that indicate the direction.

Evaluate the given statements.
1. Vectors have a size only. FALSE
2. Vectors have a size and a direction. TRUE
3. Vectors are indicated with arrows. TRUE
4. Vectors can have only positive values. FALSE
5. Vectors can have positive or negative values. TRUE

3 0

3 years ago

Read 2 more answers

Two objects are being lifted by a machine. One object has a mass of 2 kg, and is lifted at a speed of 2

kicyunya [14]

Answer:

Kinetic energy = (1/2) (mass) (speed²)

First object: (1/2) (2 kg) (2 m/s)² = 4 joules .

Second object: (1/2) (4 kg) (3 m/s)² = 18 joules .

The second object had more kinetic energy than the first one had.

Explanation:

8 0

3 years ago

Can anybody please help me with this

guajiro [1.7K]

Hey all you can do is type the question on the internet and click on the one that has the same title as yours and the answers will be there im taking physics and i do that all the answers will be there

8 0

3 years ago