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tatyana61 [14]
3 years ago
6

A glass ball weighs 188 g in air, 116 g when immersed in water, and 125 g when immersed in turpentine. Calculate the density of

the glass and the density of the turpentine. Density of glass 2.61 g/cm; density of turpentine 0.875 g/cm
Physics
1 answer:
Amanda [17]3 years ago
5 0
 <span>volume of a sphere = 4/3pi*r^3, so if you double the diameter (same as doubling the radius) it's 2^3 times bigger,</span>
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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

Length of wire l = 84 cm = 0.84 m

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

Tension in the wire T = 25 N

Frequency f = 120 Hz

So angular frequency \omega =2\pi f=2\times 3.14\times 120=753.6rad/sec

And amplitude A = 1.6 mm = 0.0016 m

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

So if amplitude is halved then power will be \frac{1}{4} times

So power will be equal to \frac{0.2023}{2}=0.0505watt

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Products in which titanium is used
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What happens when a star blows up and it is next another star will it blow up too?
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bezimeni [28]

Answer: a = 1.32 * 10^18m/s² due north

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a = 11906.6 * 10^-16 / 9.019 * 10^-31

a = 1.19 * 10^-12 / 9.019 * 10^-31

a = 0.132 * 10^19

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As stated in the question, the direction of the electric field is due north hence, the direction of it force will also be north thus making the electron experience a force due north ( according to Newton second law of motion)

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