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3 years ago

Anastasia constructed a simple circuit with a battery and a light bulb. She knows that the resistance of the light bulb is 10

Physics

1 answer:

Yuki888 [10]3 years ago

5 0

Answer:

Simple Single Loop Circuits. J. E σ. = ∆V = IR ... To find the current, use the total voltage and equivalent resistance: S. V ... A circuit contains a 48-V battery and two 240Ω light bulbs.

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What is the dimensional formula of thermal conductivity?

Inga [223]

Answer:

The dimension of thermal conductivity is M1L1T−3Θ−1, expressed in terms of the dimensions mass (M), length (L), time (T), and temperature (Θ). Other units which are closely related to the thermal conductivity are in common use in the construction and textile industries.

Explanation:looked it up for ya

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3 years ago

A horizontal board of negligible thickness and area 2.0 m2 hangs from a spring scale that reads 80 N when a 4.0 m/s wind moves b

ki77a [65]

Answer:

Scale reading for no wind $W'=60N$

Explanation:

From the question we are told that

Area $A= 2.0 m^2$

Weight of board $W=80$

Velocity $V=4.0m/s$

Density of air $\delta= 1.25 kg/m3 .$

Generally the equation for pressure difference by Bernoulli equation is mathematically given by

$dP=\frac{1}{2}pv^2$

$dP=10Pa$

Generally force acting on the board by air is mathematically given by

$F=\triangle PA$

$F=(10)2=>20N$

Therefore

Scale reading for no wind W'

$W'=W-F\\W'=80-20$

$W'=60N$

Scale reading for no wind W'=60N

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3 years ago

How are sound waves similar to light waves?

Tom [10]

Answer:

Sound and light are similar in that both are forms of energy that travel in waves.

Explanation:

They both have properties of wavelength, freqency and amplitude. ... Sound can only travel through a medium (substance) while light can travel through empty space. Sound is a form of mechanical energy caused by vibrations of matter.

6 0

3 years ago

Read 2 more answers

Help me please I’m begging u!!

Yakvenalex [24]

The speed of a wave, c, is given by the length of the wave, λ, times the frequency (times per second a cycle passes). Since frequency has units of inverse seconds, the units will then be m/s as we expect.
$c= \lambda f=2m * 140Hz=280m/s$

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3 years ago

Answer to question a

frutty [35]

0.3 is your answer, good luck!!!!

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3 years ago