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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If the Earth rotated more slowly about its axis, your apparent weight would

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<span>If the Earth rotated more slowly about its axis, your apparent weight would
A) increase.
B) decrease.
C) stay the same.
D) be zero.

</span>A) increase.

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What is true about energy that is added to a closed system?

Setler [38]

The correct answer is B

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Consider a situation of simple harmonic motion in which the distance between the endpoints is 2.39 m and exactly 8 cycles are co

aivan3 [116]

Answer:

1.195 m

2.8375 s

2.21433 rad/s

Explanation:

d = Distance = 2.39 m

N = Number of cycles = 8

t = Time to complete 8 cycles = 22.7 s

Radius would be equal to the distance divided by 2

$r=\frac{d}{2}\\\Rightarrow r=\frac{2.39}{2}\\\Rightarrow r=1.195\ m$

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Time period would be given by

$T=\frac{t}{N}\\\Rightarrow T=\frac{22.7}{8}\\\Rightarrow T=2.8375\ s$

Time period of the motion is 2.8375 s

Angular speed is given by

$\omega=\frac{2\pi}{T}\\\Rightarrow \omega=\frac{2\pi}{2.8375}\\\Rightarrow \omega=2.21433\ rad/s$

The angular speed of the motion is 2.21433 rad/s

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3 years ago

Why do most amphibians return to the water to reproduce?

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C. amphibian eggs do not contain a protective shell

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If a spring has a spring constant of 5 N/m and it is stretched 20 cm, what is the force of the Spring

Nastasia [14]

Answer:

1 N

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First the equation is momentum = Force / distance

20 cm = 0.2 m

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