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3 years ago

Lithium is more active than aluminium A.True B.false

Physics

2 answers:

Tema [17]3 years ago

6 0

True is more reactive

WITCHER [35]3 years ago

5 0

A:True because Lithium is the lighest solid and metal and the third lightest element.

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Through which material does the light travel the fastest?

eimsori [14]

The answer is A because it gives you a straight line which would make it easy for you go just go to end fast as a car .

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3 years ago

In our first example we will consider a very simple application of Newton’s second law. A worker with spikes on his shoes pulls

sweet-ann [11.9K]

Answer:

Acceleration= $0.5m/s^2$

Speed=0.67 m/s

Explanation:

We are given that

Horizontal force=F=20 N

Mass of box=m=40 kg

We know that

Acceleration= $a=\frac{F}{m}$

Using the formula

Acceleration of box= $\frac{20}{40}=0.5m/s^2$

The acceleration of the box= $0.5m/s^2$

Initial velocity=u=0

Force=F=30 N

Distance=s=0.3 m

$a=\frac{30}{40}=\frac{3}{4} ms^{-2}$

$v^2-u^2=2as$

Substitute the values

$v^2-0=2\times \frac{3}{4}\times 0.3=0.45$

$v^2=0.45$

$v=\sqrt{0.45}=0.67m/s$

Hence, the speed of the box after it has been pulled a distance of 0.3 m=0.67 m/s

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3 years ago

thr koppean climate map of arizona and three different pictures of cities in arizona describe how ari pressure, temperature and

Sonbull [250]

Answer:

the tempature and the map and climate

Explanation

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3 years ago

What are 3 types of white sugar chemical changes?

iragen [17]

Answer:

glucose ,fructose, sucrose,maltose,lactose etc... are some types of sugar.

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3 years ago

What is the final velocity of the ball that is dropped from a height of 200m?

Hoochie [10]

The final velocity of the ball that is dropped from a height of 200m is v = 44.73 m/s .

<h3>What is velocity with example?</h3>

The rate at which an object is travelling in one direction is referred to as its velocity. an automobile traveling north on a highway, or a rocket taking off. Its velocity vector's absolute value always is equal to the motion's speed because it is a scalar.

<h3>Briefing:</h3>

Given the initial velocity of the ball (u) = 0

Distance travelled by the ball (s) = 200m

Acceleration (a) = 10 m/s²

As we know:

v² = u² + 2as

Putting values:

v² = 0+2 × (10 m/s²) × (200 m)

v = 44.73 m/s.

To know more about Velocity visit:

brainly.com/question/18084516

#SPJ9

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1 year ago