Force causes an object to move in the same direction that the force is applied. Friction reduces efficiency<span> when two surfaces slide past each other, also </span>friction<span> resists their motion, and in </span>machines<span>, some input work is always used to overcome </span>friction<span>.
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Answer:
b)The haystack changes your momentum over a longer time
because:
We know that,
impulse = force x t = m (v2 - v1)
f = m (v2 - v1)/t
force will be less and u will likely to be safe. Momentum change will be the same in both the cases.
The magnitude of a vector represents its<u> </u><u>direction</u>. The phrase also refers to a quantity's mathematical or geometrical representation.
<h3 /><h3>What is a vector?</h3>
A vector is a quantity or phenomena with magnitude and direction that are independent of one another. The phrase also refers to a quantity's mathematical or geometrical representation.
If no vector can be written as a linear combination of the others, a set of vectors is said to be linearly independent.
If no vector in a collection of vectors can be written as a linear combination of the ones mentioned before it, the set is said to be linearly independent.
Hence, the magnitude of a vector represents its<u> </u><u>direction.</u><u> </u>
To learn more about the vector refer to the link;
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Answer:
Resistance of the circuit is 820 Ω
Explanation:
Given:
Two galvanometer resistance are given along with its voltages.
Let the resistance is "R" and the values of voltages be 'V' and 'V1' along with 'G' and 'G1'.
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Concept to be used:
Conversion of galvanometer into voltmeter.
Let be the resistance of the galvanometer and the maximum deflection in the galvanometer.
To measure maximum voltage resistance is connected in series .
So,
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We have to find the value of we know that in series circuit current are same.
For For
⇒ equation (i) ⇒ equation (ii)
Equating both the above equations:
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⇒ Plugging the values.
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The coil resistance of the circuit is 820 Ω .
You can easily tell by shaking the envelope by making the sheets inside it overlap then flip it around then start feeling then you can feel 4 sheets