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vesna_86 [32]
3 years ago
10

If a ball is rolling across a floor at a constant speed is it accelerating

Physics
1 answer:
KATRIN_1 [288]3 years ago
8 0

You already told us that its speed is constant. That's one part of acceleration.

The other part of acceleration is the direction it's moving.

If it's rolling in a straight line, then there's no acceleration.

If it's curving left or right, then that's acceleration.

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A few of the positive particles aimed at a gold foil seemed to bounce back.

Explanation:

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A car travels 30 km north in 25 min. and 40 km east in 35 min. What is the total time in hours? Be careful to carry over the pro
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25+35=60mins so 1.0 hours
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10. According to Newton's First Lawy , if a box is pushed with no external resistance, what will the action of the box be ?
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Explanation:

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A piano wire with mass 2.60g and length 84.0 cm is stretched with a tension of 25.0 N. A wave with frequency 120.0 Hz and amplit
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Answer:

Power will be 0.2023 watt

And when amplitude is halved then power will be 0.0505 watt

Explanation:

We have given mass of the Piano wire m = 2.60 gram = 0.0026 kg

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So mass density \mu =\frac{m}{l}=\frac{0.0026}{0.84}=0.0031kg/m

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We have to find the generated power

Power is given by P=\frac{1}{2}\sqrt{\mu T}\omega ^2A^2=\frac{1}{2}\times \sqrt{0.0031\times 25}\times 753.6^2\times 0.0016^2=0.2023watt

From the relation we can see that power P\ \propto\ A^2

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A tank circuit consists of an inductor and a capacitor. Give a simple explanation for why the magnetic field in the induc- tor i
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Answer:

If you pull a permanent magnet rapidly away from a tank circuit, what is likely to happen in that circuit?

Charge will oscillate in the tank's capacitor and inductor.

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