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2 years ago

What do scientists use to study the patterns and impacts of climate change over time?

Physics

1 answer:

Art [367]2 years ago

7 0

Scientists use the following to study the patterns and impacts of climate change over time :

Tree rings and ice formed thousands of years ago

Fossilized pollen and tree rings

Chemical isotopes in foraminifera shells and fossilized pollen

<h3>What is Climate?</h3>

This is defined as the atmospheric condition of a place over a long period of time.

Scientists use physical, chemical and biological methods to study impacts of climate change which makes option A the most appropriate.

Read more about Climate here brainly.com/question/17922964

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A mass free to vibrate on a level, frictionless surface at the end of a horizontal spring is pulled 35 cm from its equilibrium p

saul85 [17]

Answer:

0.67 s

Explanation:

This is a simple harmonic motion (SHM).

The displacement, $x$ , of an SHM is given by

$x = A\cos(\omega t)$

A is the amplitude and $\omega$ is the angular frequency.

We could use a sine function, in which case we will include a phase angle, to indicate that the oscillation began from a non-equilibrium point. We are using the cosine function for this particular case because the oscillation began from an extreme end, which is one-quarter of a single oscillation, when measured from the equilibrium point. One-quarter of an oscillation corresponds to a phase angle of 90° or $\frac{\pi}{4}$ radian.

From trigonometry, $\sin A =\cos B$ if A and B are complementary.

At $t = 0$ , $x = 3.5$

$3.5 = A\cos(\omega \times0)$

$A =3.5$

$x = 3.5\cos(\omega t)$

At $t = 0.12$ , $x = 1.5$

$1.5 = 3.5\cos(0.12\omega)$

$\cos(0.12\omega)=\dfrac{1.5}{3.5}=0.4286$

$0.12\omega =\cos^{-1}0.4286$

$0.12\omega = 1.13$

$\omega = 9.4$

The period, $T$ , is related to $\omega$ by

$T = \dfrac{2\pi}{\omega} = \dfrac{2\times3.14}{9.4}=0.67$

5 0

2 years ago

A force is represented by a ____ the choice of a ____ is necessary

Vlad [161]

Answer:

a force is represented by a<u> vector </u>the choice of a <u>reference frame</u> is necessary

Explanation:

3 0

2 years ago

Determine the wavelength of incident electromagnetic radiation required to cause an electron transition from the n = 5 to the n

ollegr [7]

The correct answer is: wavelength = 4562 nm

Explanation:

Rydberg's formula is given as:
$\frac{1}{\lambda} = R[ \frac{1}{n_1^2} - \frac{1}{n_2^2} ]$ --- (1)

Where
R = Rydberg's constant = 1.096 * 10^7 per meter
$n_1$ = 5
$n_2$ = 7

λ = Wavelength

Plug in the values in (1):

(1)=> $\frac{1}{\lambda} = (1.096 * 10^7)[ \frac{1}{5^2} - \frac{1}{7^2} ]$

$\frac{1}{\lambda} = (1.096 * 10^7)[ 0.04 - 0.020 ] \\ \lambda = \frac{1}{(1.096 * 10^7)[0.020 ]} \\ \lambda = 4562 nm$

8 0

3 years ago

What two forms of energy are associated with mechanical energy?

Katen [24]

Potential energy and kinetic energy.
Hope this helps

7 0

3 years ago

Read 2 more answers

Name the proces by which heat flows in solids

Solnce55 [7]

Answer:

conduction

Explanation:

conduction is the movement of heat from one point to another on a metal.

Hope it helps.

6 0

3 years ago