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3 years ago

When conduction electrons pass through a device with resistance, which describes their energy?

Physics

1 answer:

Aleksandr-060686 [28]3 years ago

3 0

Answer:

a) their potential energy increases.

Explanation:

Ohm's Law is

R= V/I

Where R= Resistance

V= potential difference or potential energy

I= current or conduction electron flow rate

Clearly R and V are directly proportional i-e Potential energy increases with resistance.

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Which one does not affect the gravitational force between the 1 point

Zinaida [17]

Answer:

D. The net electrical charge of the Earth.

Explanation:

All the other three choices affect the gravitational force. I remember from middle school.

6 0

3 years ago

malfutka [58]

Answer:

The penny will hit the ground at 6.39 seconds

Explanation:

Free Fall

The penny is dropped from a height of y=200 m. The equation of the height on a free-fall motion is given by:

$\displaystyle y=\frac{gt^2}{2}$

Where $g=9.8\ m/s^2$ , and t is the time.

Solving for t:

$\displaystyle t=\sqrt{\frac{2y}{g}}$

Using the value y=200:

$\displaystyle t=\sqrt{\frac{2*200}{9.8}}$

t=6.39 sec

The penny will hit the ground at 6.39 seconds

4 0

3 years ago

A car traveling at 60 mph has how much more energy than a car going at 15 mph?

Liono4ka [1.6K]

4. KE increases by a factor of 16 is the answer

Explanation:

Kinetic energy = (1/2)mv² = 0.5 mv²

where

m = mass, and v = velocity.

So at 15 mph,

K E = 0.5 m (15) ² = 112.5 m

And at 60 mph,

K E = 0.5 m (60)² = 1800 m

m is the mass, and not meters.

So, 1800 m/112. 5 m = 16

16 times the Kinetic Energy.

6 0

3 years ago

A star near the visible edge of a galaxy travels in a uniform circular orbit. It is 41,200 ly (light-years) from the galactic ce

Ronch [10]

The total mass of the galaxy is 443.4 Solar mass

Orbital velocity ( $v$ ) = $\sqrt{\frac{MG}{R} }$

where M= weight of galaxy

G= gravitational constatnt = $6.674*10^-^1^1$ (given)

R = distance from centre = $41200$ Light years (given)= $4.12*9.5*10^1^6$ km (1 ly= $9.5*10^3$ billion km)

v= orbital velocity = $275$ $km/s$ (given)

∴ According to the formula

$(2.75*10^2)^2$ = $\frac{M*6.674*10^-^1^1}{4.12*9.5*10^1^6}$

⇒ $7.56*10^4*4.12*9.5*10^1^6=M*6.674*10^-^1^1$ (cross multiplying and expanding)

⇒ $29.59*10^2^1=M*6.674*10^-^1^1$

⇒ $\frac{29.59*10^2^1*10^1^1}{6.674}=M$

⇒ $4.434*10^3^2=M$

1 solar mass = $1.989*10^3^0 kg$

⇒ Mass in solar mass =443.4 Solar mass

⇒ M = 443.4 Solar mass

Learn more about Orbital velocity here :

brainly.com/question/22247460

#SPJ10

6 0

2 years ago

Chemical bonds are formed from the attractive force of Atoms for electrons. What is the force called.

Nikolay [14]

The answer is C
Chemical bonding

5 0

4 years ago