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sattari [20]
3 years ago
15

Hello could yall answer my question ​

Physics
1 answer:
Rus_ich [418]3 years ago
8 0
Density is a physical property derived from mass devided by volume (first part of the question)




m=v*p (p is rho)
m=9.5*60 =570 g
Density of water is 1g/cm^3 (centimeter cubed)
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Your friend decides to generate electrical power by rotating a 100,000 turn coil of wire around an axis in the plane of the coil
MakcuM [25]

Answer:

a) I=35mA

b) P=1.73W

Explanation:

a) The max emf obtained in a rotating coil of N turns is given by:

emf_{max}=NBA\omega

where N is the number of turns in the coil, B is the magnitude of the magnetic field, A is the area and w is the angular velocity of the coil.

By calculating A and replacing in the formula (1G=10^{-4}T) we get:

A=\pi r^2 =\pi(0.23m)^2=0.16m^2

emf_{max}=(100000)(0.3*10^{-4}T)(0.166m^2)(140\frac{rev}{s})=69.72V

Finally, the peak current is given by:

I=\frac{emf}{R}=\frac{69.72V}{1400\Omega}=49.8mA

b)

we have that

I_{rms}=\frac{I}{\sqrt{2}}=\frac{0.0498A}{\sqrt{2}}=0.035A

P_{rms}=I^2{rms}R=(0.035A)^2(1400\Omega)=1.73W

hope this helps!!

6 0
3 years ago
What is the speed of a bobsled whose distance-time graph indicates that it traveled 123m in 28s?
Irina18 [472]
4.39 seconds per meter
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The current through inductance L is given by I=I0e−t/τ
ohaa [14]
ΔVl = L di/dt
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b. 15mm, i₀ = 36mA, T = 1.1m
t= Os
ΔVl = 0,491V
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t = 2ms
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E. t = ms
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3 years ago
How do snowflakes form?
posledela

Answer:

in the air the freeze when it’s freezing outside

Explanation:

I hope this helps

6 0
3 years ago
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Because you don’t have it
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