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3 years ago

12

lighting rods are used on houses because they allow lighting to go to the ground instead of inside the house this means the ligh

ting rods are

1 answer:

joja [24]3 years ago

3 0

The lighting rod is a conductor

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A. 2kg<br><br> B. 6kg<br><br> C. 8kg<br><br> D. 14kg

Sati [7]

Answer:

A

Explanation:

We know the force is (16N-12), which is 4N, and we know the acceleration is 2 m/s^2. Meaning, we can solve the formula m = F / a (mass equals force divided by acceleration), and we get 2kg.

7 0

3 years ago

a flashlight bulb with a potential difference of 6.0 v across it has a resistance of 8.0 how much current is the bulb filament

Andreas93 [3]

Answer:

<em>I = 0.75 Amp</em>

Explanation:

<u>Ohm's Law</u>

Ohm's law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points. The constant of proportionality is called the Resistance (R) of the conductor.

The formula can be expressed as:

V = I.R

The intensity of the current through a resistor can be calculated by solving the equation for I:

$\displaystyle I=\frac{V}{R}$

A flashlight bulb is an example of a resistor with the specific task to emit light when it's hot enough.

The potential difference (or voltage) is V=6 V and the resistance is R=8Ω, thus the current is:

$\displaystyle I=\frac{6~V}{8~\Omega}$

I = 0.75 Amp

3 0

3 years ago

A certain material has a high melting point and is malleable and shiny. It is most likely a _____.

Sonbull [250]

The answer is metal

4 0

3 years ago

Read 2 more answers

If the coefficient of kinetic friction between the puck and the ice is 0.05, how far does the puck slide before coming to rest?

Mariana [72]

According to newton's 3rd law of motion,

For every action, there is equal and opposite reaction. So if we move a body against a rough surface, there were be reaction against the force applied.

So using conservation of energy, we know:

Work done to move a body = Work done against Friction
So, Force applied * distance moved = coefficient of Friction * Normal Reaction * distance moved

For a body moving against a normal surface, Normal Reaction (R) = mg

or, mass * acceleration * distance (s) = ∪ * R * distance(s)
or, mass * (v^2/2s) = ∪ * mass * gravity

Now, s = stopping distance = v²/ 2∪g
so, using given value,∪=0.05,

s = v2/2*0.05*g

We know, g = 10, so s = v²/(2*0.05*10) = v²

where v = initial velocity

8 0

3 years ago

Read 2 more answers

A skydiver has a PE of 607,600 J. Their plane is at an altitude of 1000m. What is their mass?

yKpoI14uk [10]

PE=mgh

607,600=m*9.8*1000

m=607,600/(9.8*1000)

7 0

3 years ago