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2 years ago

9

As the wavelength of a wave increases on the electromagnetic spectrum,

2 answers:

posledela2 years ago

8 0

Answer:

C

Explanation:

Waves can be measured using wavelength and frequency. The distance from one crest to the next is called a wavelength. The number of complete wavelengths in a given unit of time is called frequency. As a wavelength increases in size, its frequency, and energy decrease.

pishuonlain [190]2 years ago

4 0

Answer:

C

Explanation:

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I don’t even know I’m so dumb.

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3 years ago

How long does it took for 1000-watt microwave oven to do 20000 joules of work

svp [43]

Answer:

20 seconds

Explanation:

The equation for Power is:

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Which means...

$Time=\frac{Work}{Power}$

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2 years ago

A box with a mass of 2 kg accelerates in a straight line

mihalych1998 [28]

Answer: 16N

Explanation:

Given that:

mass of box M= 2 kg

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Final speed V2 = 8 m/s

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i.e Force = momentum / time

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F = 2kg x 8 m/s/s)

F = 16N

Thus, the average strength of this

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2 years ago

What are plants and animals that get their energy from eating other things?

Zanzabum

Answer:

B. Consumers.

Explanation:

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3 years ago

Read 2 more answers

A disk of radius 25 cm spinning at a rate of 30 rpm slows to a stop over 3 seconds. What is the angular acceleration? B. How man

Ne4ueva [31]

Answer:

A. α = - 1.047 rad/s²

B. θ = 14.1 rad

C. θ = 2.24 rev

Explanation:

A.

We can use the first equation of motion to find the acceleration:

$\omega_f = \omega_i + \alpha t$

where,

ωf = final angular speed = 0 rad/s

ωi = initial angular speed = (30 rpm)(2π rad/1 rev)(1 min/60 s) = 3.14 rad/s

t = time = 3 s

α = angular acceleration = ?

Therefore,

$0\ rad/s = 3.14\ rad/s + \alpha(3\ s)$

<u>α = - 1.047 rad/s²</u>

B.

We can use the second equation of motion to find the angular distance:

$\theta = \omega_it +\frac{1}{2}\alpha t^2\\\theta = (3.14\ rad/s)(3\ s) + \frac{1}{2}(1.04\ rad/s^2)(3)^2$

<u>θ = 14.1 rad</u>

C.

θ = (14.1 rad)(1 rev/2π rad)

<u>θ = 2.24 rev</u>

6 0

3 years ago