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Anni [7]
4 years ago
7

Density of some metals

Physics
2 answers:
Fudgin [204]4 years ago
6 0
That's tin
d = m/v
42.5/ 5.8
which comes around 7.3 g/ml and matches with the density of the tin metal
Maslowich4 years ago
4 0
D) Tin

D=m/v
42.5/55.8
=0.76 -> tin
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artcher [175]

Answer:

The magnetic field is 14.08 T.

Explanation:

Given that,

Speed of electron v=2.2\times10^{6}\ m/s

Distance d =0.5\times10^{-10}\ m

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Using formula of magnetic field

B = \dfrac{\mu_{0}I}{2r}....(I)

Using formula of current

I=\dfrac{q}{T}

Using formula of time

T= \dfrac{2\pi r}{v}

Put the value of current and time in equation (I)

B=\dfrac{\mu \times q\times v}{2\pi r\times2r}

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B=\dfrac{4\pi\times10^{-7}\times1.6\times10^{-19}\times2.2\times10^{6}}{4\pi\times(0.5\times10^{-10})^2}

B=14.08\ T

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3 0
3 years ago
The electric output of a power plant is 716 MW. Cooling water is the main way heat from the powerplant is rejected, and it flows
Stels [109]

Answer:

(a) 83475 MW

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mass of water, m = Volume  x density = 1.35 x 10^8 x 10^-3 x 1000

                                                               = 1.35 x 10^8 kg

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T1 = 25.4° C, T2 = 30.7° C

Specific heat of water, c = 4200 J/kg°C

(a) Total energy, Q = m x c x ΔT

Q = 1.35 x 10^8 x 4200 x (30.7 - 25.4) = 3 x 10^12 J

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Power input = P = \frac{3 \times 10^{12}}{3600}=8.35 \times 10^{8}W

Power input = 83475 MW

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\eta =\frac{716}{83475}=0.858

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7 0
3 years ago
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True [87]

Answer:

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