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3 years ago

A tuning fork is vibrating the air around it. What best describes the waves produced by the tuning fork?

Physics

2 answers:

never [62]3 years ago

9 0

The answer is B on the quiz

Ksenya-84 [330]3 years ago

7 0

Answer: B.mechanical, because the vibrating tuning fork makes air molecules around it vibrate

Explanation:

<u>Mechanical waves require medium to transfer energy. It transfers energy due to vibration of medium particles. </u>The medium it self does not transport. The change in pressure of the medium particles causes transfer of energy through it.

Electromagnetic waves are produced by the electric field and magnetic field vibrating perpendicular to each other. Electromagnetic waves can travel through space and medium.

<u>A tuning fork vibrates the air around it. The vibrating fork produces mechanical waves. </u>

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Which famous scientist is associated with the force of gravity?

jenyasd209 [6]

Answer:

Isaac Newton

Explanation:

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3 years ago

Andy finds a gold colored "rock" in a stream in California. It has a mass of 96.6 grams and a volume of 5.0 cm3. Using the mass

Komok [63]

Answer:

Density

Explanation:

Density is a property that will allow for a possible identification of a material. Different materials have different densities. The unit for density is g/cm^3

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3 years ago

Greg throws a 2.8-kg pumpkin horizontally off the top of the school roof in order to hit Mr. H's car. The car has parked a dista

Igoryamba

Answer:

The horizontal velocity is $v = 9.2 m/s$

Explanation:

From the question we are told that

The mass of the pumpkin is $m = 2.8 \ kg$

The distance of the the car from the building's base is $d = 13.4 \ m$

The height of the roof is $h = 10.4 \ m$

The height is mathematically represented as

$h = \frac{1}{2} gt^2$

Where g is the acceleration due to gravity which has a value of $g =9.8 \ m/s^2$

substituting values

$10.4= 0.5 * 9.8 * t$

making the time taken the subject of the formula

$t = \frac{10.4}{0.5 * 9.8 }$

$t = 1.457 \ s$

The speed at which the pumpkin move horizontally can be represented mathematically as

$v = \frac{d}{t}$

substituting values

$v =\frac{13.4}{1.457}$

$v = 9.2 m/s$

7 0

3 years ago

The center of mass of a cow and the center of mass of a tractor are 208 meters apart. The magnitude of the gravitational force o

hjlf

Answer:

$4.5\times 10^{-10}\ N$

Explanation:

The gravitational force between two masses is inversely proportional to the square of the distance between them such that,

$\dfrac{F_1}{F_2}=\dfrac{r_2^2}{r_1^2}$ .....(1)

We have,

r₁ = 208 m, $F_1=1.8\times 10^{-9}\ N$ , r₂ = 416 m, F₂ = ?

Put all the values in relation (1) such that,

$F_2=\dfrac{F_1r_1^2}{r_2^2}\\\\F_2=\dfrac{1.8\times 10^{-9}\times 208^2}{416^2}\\\\F_2=4.5\times 10^{-10}\ N$

So, the required force is $4.5\times 10^{-10}\ N$ . Hence, the correct option is (d).

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4 years ago

Define bond length using your own words

Brut [27]

Answer:

the free encyclopedia. In molecular geometry, bond length or bond distance is defined as the average distance between nuclei of two bonded atoms in a molecule. It is a transferable property of a bond between atoms of fixed types, relatively independent of the rest of the molecule.

Explanation:

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3 years ago