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zavuch27 [327]
3 years ago
11

An electric filament lamp is connected to a power supply and switched on.

Physics
1 answer:
ladessa [460]3 years ago
7 0
This is because of of the heating effect of a current. The glow is a result of current passing through the filament. The current experiences resistance as a result heat is generated. When resistance is at zero, there potential differences is not needed hence temperature generated will be at a constant.
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One billiard ball is shot east at 1.8 m/s . A second, identical billiard ball is shot west at 0.80 m/s . The balls have a glanci
ycow [4]

Answer:

Velocity of ball1 after the collision is 0.35 m/s at 53.87° due south of east.

Explanation:

By conservation of the linear momentum:

m*V_{1o}+m*V_{2o}=m*V_{1f}+m*V_{2f}  Since both masses are the same, and expressing the equation for each axis x,y:

V_{1ox}+V_{2ox}=V_{1fx}      eqX

0=V_{1fx}+V_{2fx}                 eqY

From eqX:  V_{1fx}=1m/s

From eqY:  V_{1fy}=-1.37m/s

The module is:

V_{1f}=\sqrt{1^2+(-1.37)^2}=0.35m/s

The angle is:

\theta=atan(-1.37/1)=-53.87\°   This is 53.87° due south of east

8 0
3 years ago
The tenth pair of cranial nerves is the longest in the body and leaves by way of the jugular foramen. These nerves are called th
tekilochka [14]

Answer:

Vagus nerves

Explanation:

The vagus nerves are the tenth pair of cranial nerves

4 0
3 years ago
How do you think scientists figure out what they think the population will be in 2050?
laila [671]
They would most likely use statistics on the increase/decrease in population from previous decades and centuries. In addition to these statistics, they could use the birth and death rate and ultimately predict the increase within these next 30 years. They must also take climate change and other environmental factors into consideration when formulating such a bold prediction.
4 0
3 years ago
As the temperature increases, materials with
Andrews [41]

Answer:large

Explanation:

As the temperature increases, materials with large coefficients of linear expansion increases a lot in size

7 0
3 years ago
HELP
Free_Kalibri [48]

Answer:

Explanation:

Although there is absolutely NO regard for significant digits, I can help you with this, nonetheless.

The equation for Potential Energy is PE = mgh. We have everything but the height of the ball. We have to solve for that using a one-dimensional motion equation:

v² = v₀² + 2aΔx, where Δx is our displacement (the height we need for PE). Filling in and keeping in mind that at the max height of parabolic travel, the final velocity of the object is 0:

0 = (21.5)² + 2(-9.8)Δx and

0 = 462.25 - 19.6Δx and

-462.25 = -19.6Δx so

Δx = 23.58 m. Using this as the h in our PE equation:

PE = .19(9.8)(23.58) so

PE = 43.9 J, choice C.

8 0
3 years ago
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