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2 years ago

A ball rolls 60 centimeters along a sidewalk in 5 seconds what is the speed of the ball.

Physics

2 answers:

Reika [66]2 years ago

8 0

Answer:

12 cm/second

Explanation:

To calculate the speed of an object, simply obtain the distance traveled by the ball and divide it by the total time it took to travel 60 centimeters.

⇒ Distance/Time = Speed

In this case, the ball traveled 60 centimeters in 5 seconds.

<u>Therefore, the speed of the ball is;</u>

60 centimeters (Distance)/5 seconds (Time) = 12 cm/second

meriva2 years ago

6 0

Answer:

12 cm/s

Explanation:

Quite simply, you are looking for cm/s

so 60 cm / 5s = 12 cm/s

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Answer:

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3 years ago

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2 years ago

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3 years ago

Protons and neutrons grouped in a specific pattern

alexgriva [62]

Answer b protons and electrons

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3 years ago

What are (a) the charge and (b) the charge density on the surface of a conducting sphere of radius 0.20 m whose potential is 240

Lady bird [3.3K]

Answer:

(a) charge q=5.33 nC

(b) charge density σ=10.62 nC/m²

Explanation:

Given data

radius r=0.20 m

potential V=240 V

coulombs constant k=9×10⁹Nm²/C²

To find

(a) charge q

(b) charge density σ

Solution

For (a) charge q

$V_{potential}=kq/r\\ q=rV_{potential}/k\\q=\frac{(0.20)(240)}{9*10^{9} }\\ q=5.333*10^{-9}C\\or\\ q=5.33nC$

For (b) charge density

As charge density σ is given as:

σ=q/(4πR²)

σ=(5.333×10⁻⁹) / (4π×(0.20)²)

σ=10.62 nC/m²

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3 years ago