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4 years ago

HELP QUICK which image shows the correct way of lining up vectors to add them together?

Physics

1 answer:

alex41 [277]4 years ago

6 0

Answer:

C is correct.

When vectors are to be added the correct order is head to ail.

This is opposed to subtraction where the vectors are connected tail to tail.

(D) shows 2 vectors how would be subtracted and the result would the sum of the lengths of the vectors (since they are shown as being colinear).

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A pilot drops a bomb from a plane flying horizontally. Where will the plane be located when the bomb hits the ground

kumpel [21]

Answer:

The plane will be located directly above the bomb because they both have the same horizontal speed.

3 0

3 years ago

Help me understand why 5G cell phones and cell phone towers do not cause cancer even with prolonged exposure and are not harmful

Nat2105 [25]

Answer:

I'm not really sure as far as cell phone towers, but 5G hasn't published any safety tests, so we don't know for sure whether or not this would be harmful/cancer causing. The lack of evidence in either direction may be why we can't say definitively that it is safe or not harmful. Hope this helps.

Explanation:

7 0

3 years ago

An inductive circuit contains resistance of 20 ohm and an inductance of 20 H. If an ac voltage of 120 V and frequency 60 Hz is a

elena-s [515]

Answer:

answer : option (b) 0.016 amp

explanation : resistance of resistor , R = 10 Ω

inductance of inductor , X_LX

= 20H

voltage of AC circuit , V = 120volts

frequency, ff =60Hz

so, angular frequency, \omega=2\pi fω=2πf = 2 × π × 60 = 120π rad/s

now, current , i=\frac{V}{\sqrt{R^2+\omega^2L^2}}i=

+ω

= 120/√{10² + (120π)² × 20²}

= 120/√{100 + 14400π² × 400}

after solving this we get, i = 0.016 amp

8 0

3 years ago

In a lecture demonstration, a 3.0-m-long vertical string with ten bolts tied to it at equal intervals is dropped from the ceilin

sleet_krkn [62]

<span>First of all, the bolts wont hit the ground at equal time intervals because each bolt is constantly increasing. Therefore, the top will have different velocity with the bottom bolt at all times. this means that the bolts will speed up more as they are higher which will make the interval time shorter. therefore, the time will decrease</span>

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4 years ago

The light from many stars can be seen from earth. but there is a time delay between the time the light is emitted from the star

mrs_skeptik [129]

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1 light year = 9460730472580<span>800 metres
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4 0

4 years ago