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3 years ago

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

Physics

1 answer:

Art [367]3 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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Mass number of an atom with 11 protons

Ratling [72]

The atomic mass of sodium (Na) is 22.98977

8 0

3 years ago

After touchdown a fighter jet passes a marker on the runway at an instantaneous speed of 100 m/s and constant negative accelerat

daser333 [38]

Given that,

Deacelectration = -15 m/s²

Negative sign shows the declaration

Slowly speed = 25 m/s

Acceleration = 35 m/s²

Speed = 170 m/s

We need to calculate the time

Using equation of motion

$v=u+at$

Where, v = final velocity

u = initial velocity

a = acceleration

t = time

Put the value into the formula

$25=0+15\times t$

$t=\dfrac{25}{15}$

$t=1.66\ sec$

We need to calculate the distance from the original runway

Using equation of motion

$s=ut+\dfrac{1}{2}at^2$

$s=0+\dfrac{1}{2}\times35\times(1.66)^2$

$s=48.2\ m$

Hence, The distance from the original runway is 48.2 m.

3 0

4 years ago

What is the anomalous expansivity of water

lora16 [44]

Answer:

The anomalous expansion of water is an abnormal property of water whereby it expands instead of contracting when the temperature goes from 4o C to 0o C, and it becomes less dense. The density is maximum at 4 degree centigrade and decreases below that temperature as shown in graph.

Explanation:do you want me to explain it more??

6 0

3 years ago

Which statement is true?

saveliy_v [14]

Statement A is true.

When two resistors are connected in series, they result in an equivalent resistance greater than their individual values. A larger resistance causes lesser current to flow.

When two resistors are connected in parallel, they result in an equivalent resistance lesser than their individual values. A lesser resistance causes more current to flow.

So statement A is the correct answer.
When two resistors are connected in series, there is less total current in the circuit than if the two resistors were connected in parallel.

7 0

4 years ago

A 200 g hockey puck is launched up a metal ramp that is inclined at a 30° angle. The coefficients of static and kinetic friction

Xelga [282]

Answer:

the vertical height reached by the puck is 580.47 m

Explanation:

given,

mass of hockey puck = 200 g

angle of inclination (θ )= 30°

μs = 0.40

μk = 0.30

initial velocity = 93 m/s

acceleration of pluck upwards,

a = - g (cosθ × μk +sin θ)

a = - 9.81 × (0.3 × cos 30° +sin 30°)

a = -7.45 m/s²

now,

s = $\dfrac{u^2}{2a}$

s = $\dfrac{93^2}{2\times 7.45}$

s = 580.47 m

the vertical height reached by the puck is 580.47 m

7 0

3 years ago