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2 years ago

What is the scientific notation that best represents the

Physics

2 answers:

attashe74 [19]2 years ago

7 0

Answer:

First question its D 6.84 x 10^9 m Second is B 1.43 x 10^-10 g

Explanation:

avanturin [10]2 years ago

5 0

6.84 x 10^9 m is your answer :)

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Why do most objects tend to contain nearly equal numbers of positive and negative charges?

mart [117]

<span>Most objects tend to contain the same numbers of positive and negative charge because this is the most stable situation. In fact, if an object has an excess of positive charge, it tends to attract an equal number of negative charges to balance this effect and restore neutrality: the attracted negative charges combine with the excess of positive charges, leaving the object electrically neutral.</span>

3 0

3 years ago

Read 2 more answers

A car travels a distance of 74 meters in 7 seconds. What is the average speed of the car?

Nuetrik [128]

Answer:

Explanation:

The average speed of the car can be found by using the formula

$s = \frac{d}{t } \\$

d is the distance

t is the time taken

From the question we have

$s = \frac{74}{7} \\ = 10.571428...$

We have the final answer as

Hope this helps you

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2 years ago

1 st QUESTION: In the raisin experiment what was your first step of the scientific method?

d1i1m1o1n [39]

Answer: A. ask a question

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2 years ago

Assume we’re able to travel to your planet and decide to take some fireworks with us to celebrate our journey.

julia-pushkina [17]

Answer:

The horizontal distance covered by the firework will be $\frac{1876.8}{g}$

Explanation:

Let acceleration due to gravity on the planet be g, initial velocity of the firework be u and angle made with the horizontal be ∅.

writing equation of motion in vertical direction:

$v_{y}=u_{y}+(-g) t$

$u_{y}= u\sin \phi$

and $v_{y}=0$

therefore $\frac{u\sin \phi }{g} =t$

writing equation of motion in horizontal direction:

$s_{x}=u_{x}t$

$u_{x} = u\cos \phi$

therefore the equation becomes $s_{x}=\frac{u^{2} \sin \phi \cos \phi}{g}$

therefore horizontal distance traveled = $\frac{u^{2}\sin 2\alpha \phi }{2g}=\frac{1876.8}{g}\frac{m}{s}$

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3 years ago

A meteor moving 468 km per minute traveling in a south-to-north direction passed near Earth in 2013. Does this statement describ

Thepotemich [5.8K]

Answer:

this statement describes meteor's velocity,

because velocity is a vector quantity which has both magnitude as well as a specific direction and here the meteor's direction is specified in the statement hence we conclude that this statement describes meteor's velocity as well as speed too.

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3 years ago