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sasho [114]
4 years ago
10

3 light bulbs with resistances of 20, 15, and 45 are powered by a 9v battery. What type of circuit should the light bulbs be pla

ced in for the most power
Physics
1 answer:
Katyanochek1 [597]4 years ago
8 0

Answer:The light bulb with the 15ohm resistance will have more power

Explanation:

Resistance is inversely proportional to current, so as the resistance increases the current decreases,so there 15ohm resistance bulb will be powered more because of it low resistance

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What conditions must be met in order for work to be done?
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Answer:

i think the answer is D

Explanation:

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4 0
3 years ago
Define density and give its SI unit​
3241004551 [841]

Answer:

Density is defined as mass per unit volume. its SI unit is: kg/m³

Explanation:

8 0
2 years ago
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a car travels from station A to B at 30kmph during its return trip A it travels 30 km pH for the first half distance and it 70 k
8_murik_8 [283]

Explanation:

If you cannot visualize it, just assume that the distance from station A to B is 420km. Each half is 210km.

When the car travels from A to B, it takes 420/30 = 14 hours.

When the car travels from B to the halfway point, it takes 210/30 = 7 hours.

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3 0
3 years ago
A charged particle moves in a circular path in a uniform magnetic field.Which of the following would increase the period of the
Bond [772]

Answer:

Increasing its charge

Increasing the field strength

Explanation:

For a charged particle moving in a circular path in a uniform magnetic field, the centripetal force is provided by the magnetic force, so we can write:

qvB = m\frac{v^2}{r}

where

q is the charge

v is the velocity

B is the magnetic field

m is the mass

r is the radius of the orbit

The period of the motion is

T=\frac{2\pi r}{v}

Re-arranging for r

r=\frac{Tv}{2\pi}

And substituting into the previous equation

qvB = m \frac{Tv^3}{2\pi}

Solving for T,

T=\frac{2\pi q B}{m v^2}

So we see that the period is:

- proportional to the charge and the magnetic field

- inversely proportional to the mass and the square of the speed

So the following will increase the period of the particle's motion:

Increasing its charge

Increasing the field strength

4 0
3 years ago
What did you include in your description? Check all that apply
Alexeev081 [22]
I included things
Hope this helps!
7 0
3 years ago
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