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miskamm [114]
3 years ago
5

An electric lamp creates light by forcing electrons through the filament of its light bulb. The kinetic energy of the moving ele

ctrons comes directly from? electric kinetic energy. electric potential energy. chemical potential energy. thermal kinetic energy.
Physics
2 answers:
ollegr [7]3 years ago
6 0

electric potential energy..electrons get the the kinetic energy from the voltage applied across the conductor

Triss [41]3 years ago
3 0

the correct answer is electric potential energy.


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Explanation:

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low freezing point. high vapour pressure.

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What happens in a tug of war if the net forces are balanced and why?
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Answer:

Balanced forces are responsible for unchanging motion. Balanced forces are forces where the effect of one force is cancelled out by another. A tug of war, where each team is pulling equally on the rope, is an example of balanced forces. The forces exerted on the rope are equal in size and opposite in direction.

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3 years ago
Consider an old-fashion bicycle with a small wheel of radius 0.17 m and a large wheel of radius 0.92 m. Suppose the rider starts
Gala2k [10]

Answer:

10259.6 m

Explanation:

We are given that

Radius of small wheel,r=0.17 m

Radius of large wheel,r'=0.92 m

Initial velocity,u=0

Time,t=2.7 minutes=162 s

1 min=60 s

Velocity,v=10m/s

Time,t'=13.7 minutes=822 s

Time,t''=4.1 minutes=246 s

v=u+at

Substitute the values

10=0+162a=162a

a=\frac{10}{162}=0.0617m/s^2

s=ut+\frac{1}{2}at^2

Substitute the values

s=\frac{1}{2}(0.0617)(162)^2=809.6 m

s'=vt'=10\times 822=8220 m

a'=\frac{v}{t''}=\frac{10}{246}

s''=\frac{1}{2}a't''^2=\frac{1}{2}\times \frac{10}{246}(246)^2=1230 m

Total distance traveled by rider=s+s'+s''=809.6+8220+1230=10259.6 m

6 0
3 years ago
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barxatty [35]

r1 = 5*10^10 m , r2 = 6*10^12 m

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0.5v1^2 - GM/r1 = 0.5v2^2 - GM/r2

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G = 6.67*10^-11 N.m^2/kg^2

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v2 = 5.35*10^4 m/s

4 0
3 years ago
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