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Anton [14]
3 years ago
14

Some help please physics

Physics
2 answers:
salantis [7]3 years ago
3 0
My best guess is A  There is missing a time unit in the question.  I know that 4.4 *5 = 21 so that would be my best guess.
REY [17]3 years ago
3 0
The car's AVERAGE speed is (21/2)=10.5 m/s. (Zero at the beginning, 21 at the end.). In order to cover 50m at an average speed of 10.5 m/s, it takes (50/10.5)=4.76 seconds. It took 4.76 seconds to accelerate to 21 m/s^2, so the average acceleration is (21/4.76)=4.2 seconds. You probably had a formula in class that would take you to 4.4, but this is the way I think it through without a lot of formulas.
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8 0
2 years ago
I need help with question 4 please​
Yuki888 [10]

Answer:

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4 0
2 years ago
PLEASE HELP! DUE DATE IS TODAY
g100num [7]

Answer:

<u>Question 2</u>

<u>Part (a)</u>

Chlorine:  type of compound = chloride

Oxygen:  type of compound = oxide

<u>Part (b)</u>

The iron reacts with water and oxygen to form rust.

A water molecule is made up of two hydrogen atoms joined to one oxygen atom:  Di-hydrogen oxide.

<u>Question 3</u>

This circuit is in parallel.

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As the lamps have <u>equal resistance</u>, the current splits equally:

A₂ = 0.4 A

A₃ = 0.4 A

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A₄ = 0.8 A

4 0
2 years ago
A swing has a period of 10 seconds. What is its frequency ?
kow [346]

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2 years ago
TIME REMISE
SCORPION-xisa [38]

Answer:

It is conserved

Explanation:

5 0
3 years ago
Read 2 more answers
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