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MArishka [77]
3 years ago
11

Direct current is the flow of an electric charge?

Physics
1 answer:
RUDIKE [14]3 years ago
3 0
Direct current is the unidirectional flow of an electric charge.

The term 'unidirectional' in the statement means that direct current only moves in one direction. Direct current usually produced by things such as batteries, dynamos, and power supplies

hope this helps <span />
You might be interested in
If you dive underwater, you notice an uncomfortable pressure on your eardrums due to the increased pressure. The human eardrum h
irinina [24]

Answer:

h=10m

Explanation:

From the question we are told that:

Area a=70 x 10^{-6}

Force F=7N

Generally the equation for Pressure is mathematically given by

Pressure = Force/Area

P=\frac{F}{A}

P=\frac{ 7}{(70 * 10^{-6})}

P= 1*10^{5} Pa

Generally the equation for Pressure is also mathematically given by

P=hpg

Therefore

h=\frac{P}{hg}

h=\frac{10000}{1000*9.8}

h=10m

6 0
2 years ago
A child and sled with a combined mass of 48.8 kg slide down a frictionless hill that is 7.05 m high. If the sled starts from res
nexus9112 [7]

Answer:

Speed at bottom of the hill (v) = 11.74 m/s

Explanation:

Given:

Combined mass = 48.8 kg

Height h = 7.05 m

Find:

Speed at bottom of the hill (v)

Computation:

v² = 2gh

v = √2 x 9.8 x 7.05

v = √138.18

v = 11.74 m/s

Speed at bottom of the hill (v) = 11.74 m/s

7 0
3 years ago
Consider a 3 m long string, clamped at both ends. The string has a mass of 60 g and waves travel at v = 100 m/s. The third harmo
PilotLPTM [1.2K]

Answer:

a) λ = 2 m

, c)  f = 50 Hz

Explanation:

When a string is fixed at the ends the wave is reflected at each end, giving rise to a standing wave.

Since we extract them are fixed we have nodes at these points, the wavelength in the string is

fundamental       λ = 2L

2nd harmonic      λ= 2L / 2

3 harmonica         λ= 2L / 3

a and b) from aui we can find the wavelength

             λ = 2 3/3

             λ = 2 m

c) the speed of the wave is related to the frequency and wavelength

          v = λ f

          f = v / λ

          f = 100/2

          f = 50 Hz

d) the acceleration can be found with the equations

         a = d²y / dt²

the standing wave equation is

          y = 2A sin kx cos wt

          a = -2A w² sin kx cos wt

the acceleration is maximum when the cosine is ±1

          A = 2A w² sin kx

the oscillatory part indicates that the wave moves, if we make this maximum vine, they relate it to

          a = 2A w²

          w = 2πf

          A = 0.2 cm = 0.002 m

         a = 2 0.002 (2π 50)²

         a = 98.7 m / s

8 0
3 years ago
This is a test oooppps
san4es73 [151]

Explanation:

First of all friend attach a picture with the question then only I can Solve......

hope you might understood..

8 0
2 years ago
Read 2 more answers
After running, your friend lies down on a tile floor because he says the "coolness" of the tile transfers to his body. Is this s
GrogVix [38]

Answer:

oh this is tricky

Explanation:

this is false because the warmth of his body will transfer to the cool tiles

4 0
2 years ago
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