3 years ago

Which quantity is a vector quantity?

Physics

1 answer:

inn [45]3 years ago

8 0

Answer:

displacement is a vector quantity

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1. The speed of sound in air is roughly 1,484 m/s. How far, in meters, would a sound wave travel in 3 seconds?

kobusy [5.1K]

Speed = distance/time taken

1484 = distance/3

Distance = 1484 x 3

Distance = 4452 m

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3 years ago

A rocket is fired upwards with an acceleration of 32 m/s2 . If the 200kg rocket experiences an air resistance force of 12000N, w

shutvik [7]

Answer: 20360 N

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3 years ago

A thin film of cooking oil ( n = 1.47 ) is spread on a puddle of water ( n = 1.35 ) . What is the minimum thickness D min of the

zlopas [31]

Answer:

The minimum thickness of the oil is 77.55 nm

Explanation:

Given:

Refractive index of oil $n_{o} = 1.47$

Refractive index of water $n_{w} = 1.35$

Wavelength of light $\lambda= 456 \times 10^{-9}$ m

From the equation of thin film interference,

The minimum thickness is given by,

$2n_{o} t = (n+\frac{1}{2}) \lambda$

Where $n = 0,1,2,3.........$ , $t =$ thickness

Here we have to find minimum thickness so we use $n = 0$

$2n_{o} t =( 0+\frac{1}{2} )\lambda$

$t = \frac{\lambda }{4 n_{o} }$

$t = \frac{456 \times 10^{-9} }{4 \times 1.47}$

$t = 77.55 \times 10^{-9}$ m

$t = 77.55$ nm

Therefore, the minimum thickness of the oil is 77.55 nm

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4 years ago

Which type of graph uses wedges to show the amount of data points in a category?

Umnica [9.8K]

A pie chart uses wedges to show the amount of data points in a category.

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4 years ago

Read 2 more answers

Which ball has the greater acceleration at the instant of release?

yuradex [85]

They're equal.

Ignoring air resistance, any object you're not holding onto has the same, constant acceleration ... 9.8 m/s^2 down ... from the moment it leaves your hand until the moment it hits the ground.

It doesn't matter how heavy the object is, and it doesn't matter whether you throw it up, down, or sideways, or just let go and let it drop.

6 0

3 years ago