3 years ago

Why will the bulb remain off if the switch is open

1 answer:

5 0

That's because if it's a series circuit, the current only has one path to go through. If the switch is off, or the wire is broken, the current can't travel anywhere and the bulb will remain off.
Hope this helps!

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A toy rocket is launched straight up by using a spring. The rocket is initially pressed down on the spring so that the spring is

Delvig [45]

Answer:

B.6.86 m

Explanation:

Given that

Compression in spring ,x= 9 cm

Spring constant ,K= 830 N/m

Mass of the rocket ,m= 50 g = 0.05 kg ( 1 kg = 1000 g)

Now by applying energy conservation

$\dfrac{1}{2}Kx^2=mgh$

$h=\dfrac{1}{2\times mg}kx^2$

Now by putting the values ( we are taking g= 9.81 m/s²)

$h=\dfrac{1}{2\times 9.81\times 0.05}\times 830\times 0.09^2$

h= 6.853 m

Therefore the answer is B.

B.6.86 m

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3 years ago

Electromagnet Fluctation

Tems11 [23]

Answer:

answer choice B

Explanation:

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3 years ago

a 2 kg laptop sits on the floor near a 4 kg jar of pennies. if the force of gravity between them is 3.42× 10⁻¹⁰ , how far apart

MissTica

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3 years ago

What is the Force in Newtons exerted by cart with a mass of 0.75 kg and an Acceleration of 6m/s2?

denis-greek [22]

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 0.75 × 6 = 4.5

We have the final answer as

Hope this helps you

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3 years ago