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3 years ago

14

The theory of plate tectonics suggests that about 200 million years ago, all of Earth's land was confined to a single continent

called
A. Laurasia.
B. Eurasia.
C. Gondwanaland.
D. Pangaea

2 answers:

miss Akunina [59]3 years ago

8 0

The answer is D Pangaea

goblinko [34]3 years ago

8 0

The people at that time called their continent "Pangaea". We see it everywhere in their books, newspapers, mp3s and movies.

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How is newtons third law of motion demonstrated on a roller coaster?

butalik [34]

<span>Newton's Third Law of Action-Reaction is that for each and every action that happens, there is an equal and opposite reaction to it. In the scenario of a roller coaster, this is when you push down on the seat of the roller coaster as it flies along and the seat pushes back against you.</span>

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3 years ago

How much water can be held by a cylindrical tank with a radius of 12 feet and a height of 30 feet? A. 2,260.8 cubic feet B. 13,5

MakcuM [25]

Answer:

Volume, V = 13564.8 cubic feet

Explanation:

It is given that,

Radius of the cylindrical tank, r = 12 feet

Height of the tank, h = 30 feet

We need to find the water that can be held by a cylindrical tank i.e. we need to find the volume of the tank. It is given by :

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$V=3.14\times (12)^2\times 30$

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So, the water held by the tank is 13564.8 cubic feet. Hence, this is the required solution.

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3 years ago

A baseball hit just above the ground leaves the bat 27 m/s at 45° above the horizontal. A) How far away does the ball strike the

Sedbober [7]

Answer:

A) The ball hits the ground 74.45 m far from the hitting position.

B) Maximum height of the ball = 18.57 m

Explanation:

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Horizontal velocity = 27cos45 = 19.09 m/s

Vertical velocity = 27sin45 = 19.09 m/s

Time to reach maximum height,

v = u + at

0 = 19.09 - 9.81 t

t = 1.95 s

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2 years ago

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s2008m [1.1K]

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