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4 years ago

Amplitude means that a note has a high pitch. true or false

Physics

2 answers:

melisa1 [442]4 years ago

6 0

Amplitude does not mean a note has a high pitch

vladimir2022 [97]4 years ago

3 0

False, it is the volume

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In the 2008 Olympics, Jamaican sprinter Usain Bolt shocked the world as he ran the 100-meter dash in 9.69 seconds. Determine Usa

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Answer:

His average speed was 10.3199 m/s.

Explanation:

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4 years ago

The value 10.00 has____ significant figures

natka813 [3]

Answer:

Explanation:

You assume that when they were writing two zeroes after the decimal point, they wanted to show that these are significant in determining the precision of this number.

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4 years ago

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A baseball is thrown at an angle of 20° relative to the ground at a speed of 25 m/s if the ball was caught 50 m from the thrower

scoray [572]

Answer:

2.1 s

Explanation:

The motion of the ball is a projectile motion. We know that the horizontal range of the ball is

$d = 50 m$

And that the initial speed of the ball is

$u=25 m/s$

at an angle of

$\theta=20^{\circ}$

So, the horizontal speed of the ball (which is constant during the entire motion) is

$u_x = u cos \theta = 25 \cdot cos 20^{\circ} = 23.5 m/s$

And since the horizontal range is 50 m, the time taken for the ball to cover this distance was

$t=\frac{d}{u_x}=\frac{50}{23.5}=2.1 s$

which is the time the ball spent in air.

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3 years ago

What are the examples of pulley? Plz tell the answer as fast as possible plz.

kifflom [539]

Answer:

elevators

Theatre system

construction pulley

lifts

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3 years ago

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In proton beam therapy, a beam of high-energy protons is used to kill cancerous cells in a tumor. In one system, the beam, which

Thepotemich [5.8K]

The number of protons that strike the tumor each second is $1.75 \times 10^8$ protons.

<u>Given the following data:</u>

Energy of proton = $2.8 \times 10^{-11}$ Joules.

Current = 84 nA to A = $84 \times 10^{-9}$ Ampere.

Energy of total dose = $3.4 \times 10^{-3}$ Joules.

<u>Scientific data:</u>

Charge of proton = $1.602 \times 10^{-19}$ C.

To determine the number of protons that strike the tumor each second:

<h3>How to determine the number of protons.</h3>

Mathematically, the quantity of charge per unit time is given by this formula:

$Q =It=Ne\\\\N = \frac{Q}{e}$

<u>Where:</u>

N is the number of protons.

t is the time measured in seconds.

I is the current.

e is the charge of protons.

Substituting the parameters into the formula, we have;

$N=\frac{2.8 \times 10^{-11} }{1.602 \times 10^{-19}} \\\\N = 1.75 \times 10^{8}$ protons.

Read more on charges here: brainly.com/question/14372859

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3 years ago