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3 years ago

What is a watt a unit of? light time distance power

Physics

2 answers:

weeeeeb [17]3 years ago

6 0

Answer:

power...............m....

Len [333]3 years ago

5 0

Answer:

The dimension of power is energy divided by time. In the International System of Units (SI), the unit of power is the watt (W), which is equal to one joule per second.

SI unit: watt (W)

In SI base units: kg⋅m2⋅s−3

Explanation:

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If an R = 1-kΩ resistor, a C = 1-μF capacitor, and an L = 0.2-H inductor are connected in series with a V = 150 sin (377t) volts

fgiga [73]

Answer

given,

R = 1-kΩ = 1000 Ω

C = 1-μF

L = 0.2-H

V = V_max sin( ω t)

comparing

V = 150 sin ( 377 t)

ω = 377

$\chi_c = \dfrac{1}{\omega C}$

$\chi_c = \dfrac{1}{377 \times 1 \times 10^{-6}}$

$\chi_c = 2652.5\Omega$

$\chi_L =377 \times 0.2$

$\chi_L =75.4\ \Omega$

Impedance,

$Z = \sqrt{R^2+(\chi_L-\chi_c)^2}$

$Z = \sqrt{1000^2+(75.4 -2652.5)^2}$

Z = 2764.3 Ω

now,

V_{max} = 150 V

$I_{max} = \dfrac{V}{Z}$

$I_{max} = \dfrac{150}{2764.3}$

$I_{max} = 0.0543$

$I_{max} = 54.3\ mA$

3 0

3 years ago

Which type of image is formed on a cinema screen?

Taya2010 [7]

Answer:

A real image is formed on a cinema screen.

Explanation:

It is a type of image that is formed when light rays coming from an object meet each other in actual after reflection or refraction. A real image can be easily obtained on the screen. It is always inverted

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3 years ago

Which is an example of making a qualitative observation?

Alisiya [41]

"Describing how copper changes color in chlorine" is the answer I think is right. Hope this helped!

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4 years ago

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Greeley [361]

Answer:

Explanation:

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babymother [125]

Answer:

Explanation:

momentum = mass ×velocity

A. mv = 200

B. mv = 300

C. mv= 400

D. mv= 200

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3 years ago