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3 years ago

Help Please

Physics

1 answer:

andriy [413]3 years ago

6 0

Explanation:

define speed because change in motion is known as it is also the definition of speed and if there is change in motion then there will be increase of speed or decrease of speed so the answer is speed

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Why do flames go upwards

BabaBlast [244]

Answer:

Easy search it on g o o g l e

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3 years ago

The resistanceless inductor is connected across the ac source whose voltage amplitude is 24.5 V and angular frequency is 850 rad

timurjin [86]

Answer:

Part A 2.88 A, PART B 28.82 mA PART C 0.288 mA

Explanation:

We have given angular frequency $\omega =850rad/sec$

Voltage source has an amplitude of 24.5 V, So V= 24.5 volt

Part A

We have given inductance $L=10^{-2}H$

So inductive reactance $X_L=\omega L=850\times 10^{-2}=8.5ohm$

So current $i=\frac{V}{X_L}=\frac{24.5}{8.5}=2.8823A$

Part B

We have given inductance $L=1 H$

So inductive reactance $X_L=\omega L=850\times 1=850ohm$

So current $i=\frac{V}{X_L}=\frac{24.5}{850}=28.82mA$

Part C

We have given inductance $L=100 H$

So inductive reactance $X_L=\omega L=850\times 100=85000ohm$

So current $i=\frac{V}{X_L}=\frac{24.5}{85000}=0.288mA$

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3 years ago

The divisions of time in the Geologic Time Scale represent:

qaws [65]

Major changes in biodiversity

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3 years ago

How can an electron in an atom lose energy to go from a higher energy level to a lower energy level? select one:

Romashka-Z-Leto [24]

I belive that the answer is b.

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3 years ago

Stars produce their own light but planets do not. Even then we can see them. explain

PilotLPTM [1.2K]

Planets are not hot enough, and that's because they lack the internal energy sources that stars have: thermonuclear fusion (They do emit a little light, mainly infrared light, but nothing compared to the sun)

Planets don't have their own light, so simply they do not emit light, this phenomena goes back to their information. When they are formed, they are much, much less hotter than the stars. In stars, fusion reaction always goes on, in which energy, as well as light is formed, so, there is light for stars to emit for a long time.

4 0

4 years ago