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3 years ago

7

Your class decides to build a circuit to make a light bulb shine. When you are finished, you have a setup with wires, a light bu

lb and a battery.
What role does the battery play in this circuit design?
A) The battery works as the system's wires.
B) The battery is the electrical power supply.
C) The battery is the circuit's main conductor.
D) The battery works as the system's electrical switch.

2 answers:

Evgesh-ka [11]3 years ago

6 0

The answer to this question would be B (the battery is the electrical power supply)

Makovka662 [10]3 years ago

4 0

Answer:

B

Explanation:

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If your motorcycle runs out of fuel while you are driving, the engine stops but you do not come to an immediate stop. The concep

mrs_skeptik [129]

Answer:

D. Inertia

Explanation:

inertia is another word for newtons first law of motions

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3 years ago

nirvana33 [79]

#1

As per work energy theorem work done by all forces must be equal to change in its kinetic energy

so correct answer will be

$W_{net}$ = change in kinetic energy

#2

Torque is defined as

$\tau = r \times F$

$\tau = rFsin\theta$

so here torque will be maximum when applied force is perpendicular to the rod

so first figure of rod is correct for maximum torque

#3

When car makes turn then its passengers moves outwards which is due to the property of inertia because due to this property passengers has tendency to move in same direction and hence it feels to move outwards

So correct answer will be

<em>inertia</em>

#4

As per energy conservation we can say

initial potential energy = final kinetic energy

$PE = KE$

$KE = mgH$

$KE = 0.5(9.8)(0.5)$

$KE = 2.5 J$

7 0

3 years ago

What is occurring in the umbra?

matrenka [14]

Answer:

A. a total solar eclipse

Explanation:

During a solar eclipse,the moon comes between the sun and Earth, casting its shadow over the Earth

3 0

3 years ago

What is the threshold velocity vthreshold(ethanol) for creating Cherenkov light from a charged particle as it travels through et

AnnZ [28]

Explanation:

The velocity of light in a medium of refractive index $n[tex] is given by,
[tex]v=\frac{c}{n}$

$v \text { is the velocity of light in the medium }$

$c \text { is speed of light in vacuum }$

The exact value of speed of light in vacuum is $299792458 \mathrm{m} / \mathrm{s}$ .

For Cherenkov radiation to be emitted, the velocity of the charged particle traversing the medium must be greater than this velocity. Thus, the threshold velocity of for creating Cherenkov radiation is,

$v_{\text {Cherenkov }} \geq \frac{c}{n}$

$v_{\text {threshod }}=\frac{c}{n}$

For water $n=1.33,[tex] thus the threshold velocity for producing Cherenkov radiation in water is,
[tex]v_{\text {threatold }(\text { water })} &=\frac{299792458 \mathrm{m} / \mathrm{s}}{1.33}$

$=225407863 \mathrm{m} / \mathrm{s}$

$=2.254 \times 10^{8} \mathrm{m} / \mathrm{s}$

For ethanol $n=1.36[tex], thus the threshold velocity for producing Cherenkov radiation in water is,
[tex]v_{\text {threstold }( \text { ettanol) } } &=\frac{299792458 \mathrm{m} / \mathrm{s}}{1.36}$

$=220435630 \mathrm{m} / \mathrm{s}$

$=2.204 \times 10^{8} \mathrm{m} / \mathrm{s}$

6 0

3 years ago

Read 2 more answers

A train starts from rest and leaves Greenburg station with an acceleration of 1.20 meters per second2. How long does it take the

AURORKA [14]

Answer:

Time, t = 28.87 seconds

Explanation:

Given the following data;

Acceleration = 1.20 m/s²

Distance = 500 meters

Initial velocity = 0 m/s

To find the time to cover the distance, we would use the second equation of motion;

$S = ut + \frac {1}{2}at^{2}$

Where;

S represents the displacement or height measured in meters.

u represents the initial velocity measured in meters per seconds.

t represents the time measured in seconds.

a represents acceleration measured in meters per seconds square.

Substituting into the equation, we have;

$500 = 0*t + \frac {1}{2}*(1.2)*t^{2}$

$500 = 0 + 0.6*t^{2}$

$500 = 0.6t^{2}$

$t^{2} = \frac {500}{0.6}$

$t^{2} = 833.33$

Taking the square root of both sides, we have;

$t = \sqrt{833.33}$

Time, t = 28.87 seconds

4 0

3 years ago