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3 years ago

What type of potential energy is a 9 volt battery an example of?

Physics

2 answers:

Ulleksa [173]3 years ago

5 0

Answer:

potential energy

Explanation:

Sonbull [250]3 years ago

5 0

Answer:

It is electrical potential energy

Explanation:

because any sort of battery produces energy making it electrical. I hope this helps

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A sealed test tube traps 25.0 cm3 of air at a pressure of 1.00 atm and temperature of 18°C. The test tube’s stopper has a diamet

puteri [66]

Answer:

180° C

Explanation:

First we start by finding the area of the stopper.

A = πd²/4, where d = 1.5 cm = 0.015 m

A = 3.142 * 0.015² * ¼

A = 1.767*10^-4 m²

Next we find the force on the stopper

F = (P - P•)A, where

F = 10 N

P = pressure inside the tube,

P• = 1 atm

10 = (P - 101325) * 1.767*10^-4

P - 101325 = 10/1.767*10^-4

P - 101325 = 56593

P = 56593 + 101325

P = 157918 Pascal

Now, remember, in an ideal gas,

P1V1/T1 = P2V2/T2, where V is constant, then we have

P1/T1 = P2/T2, and when we substitute the values, we have

101325/(273 + 18) = 157918/ T2

101325/291 = 157918/ T2

T2 = (157918 * 291)/101325

T2 = 453 K

T2 = 453 - 273 = 180° C

3 0

4 years ago

a pulley system has an efficiency of 74.2%. If you perform 200 J of work how much useful work does the pulley perform

oksian1 [2.3K]

Answer:

148.4 J

Explanation:

We are given that the efficiency of a pulley system is 74.2% and we are to calculate the useful work done if we perform 200 J of work

We know that efficiency is basically the measure of how efficient a process is.

The formula of efficiency is given by:

Efficiency = useful energy output / total energy input

So substituting the given values in the above formula:

0.742 = Useful energy / 200 J

Useful energy = 148.4 J

3 0

3 years ago

A visitor to a lighthouse wishes to determine the height of the tower. She ties a spool of thread to a small rock to make a simp

Wittaler [7]

Answer:

l = 10.16 m

Explanation:

In this case, we have the period of oscillation of the pendulum is 6.4 s. It is required to find the height of the tower.

We know that the pendulum executes SHM. Let l is the height of the tower. The time period of simple pendulum is given by :

$T=2\pi \sqrt{\dfrac{l}{g}}$

g is acceleration due to gravity

We need to rearrange the above equation such that,

$l=\dfrac{T^2g}{4\pi ^2}\\\\l=\dfrac{(6.4)^2\times 9.8}{4\pi ^2}\\\\l=10.16\ m$

So, the height of the tower is 10.16 m.

4 0

4 years ago

Calculate her average speed between t = 0 and t = 10 s. Show your working.

Oksana_A [137]

Explanation:

Average velocity: 6.01×103 m/s.

Velocity at time t=0 s : 0 m/s.

Velocity at t=10 s : 2.40×104 m/s.

7 0

3 years ago

Why does the pattern of colors repeat in a thin soap film? Please use 2 content related sentences

alexgriva [62]

Answer:

1) Some light waves bounce off the inner part of the film.

2) In doing so they travel a bit than the waves bouncing off the outer waves.

so we see colors repeat in pattern in a thin soap film

Explanation:

A colorful interference pattern is observed when light is reflected from the top and bottom boundaries of a thin oil film. The different bands form as the film's thickness diminishes from a central runoff-point.

When white light shines on a bubble, strange things happen. When light waves hit a bubble, some of them bounce straight back off the outer part of the soap film. Others carry on through but then bounce off the inner part of the film. So one set of light rays shine into a soap bubble, but two sets of rays come back out again. When they emerge, the waves that bounce off the inner film have traveled a tiny bit further than the waves that bounced off the outer film. So we have two sets of light waves that are now slightly out of step. Like two sets of ripples on a pond, these waves start merging. Just like on a pond, some add together and some cancel out. The overall effect is that some of the colors in the original white light disappear altogether, leaving other colors behind. These are the colors you see in soap bubbles.

5 0

4 years ago