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3 years ago

Which combination of vectors would form the resultant vector 6.5 m 18° N of E when added together?

Physics

1 answer:

Vaselesa [24]3 years ago

4 0

r = (x, y) + (6.5*cos(18°)-x, 6.5*sin(18°)-1)

v1= (x, y), v2=(6.5*cos18°-1, 6.5*sin18°-1)

You can choose any real numbers for x and y. See attached for a little more depth.

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Transformers will not work on ______ electrical systems.

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Transformers only work with AC.

If you put DC into a transformer, all that comes out is smoke.

(a)

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3 years ago

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If you travel for three hours of a speed of 30 km/h, how far will you go?

lesya692 [45]

Answer:

90km

Explanation:

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3 years ago

Car B has the same mass as Car A but is going twice as fast. If the same constant force brings both cars to a stop, how far will

evablogger [386]

Answer:four times

Explanation:

Given

mass of both cars A and B are same suppose m

but velocity of car B is same as of car A

Suppose velocity of car A is u

Velocity of car B is 2 u

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using to find the distance traveled

where, v=final velocity

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a=acceleration(offered by force)

s=displacement

final velocity is zero

For car A

$0-(u)^2=2\times a\times s$

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For car B

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3 years ago

A point charge of 9.00 × 10−9 C is located at the origin of a coordinate system. A positive charge of 3.00 × 10−9 C is brought i

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A point charge is located at the origin of a coordinate system. A positive charge is brought in from infinity to a point. The charges are at distance for given electrical potential energy is 3.34 x 10⁷ m.

<h3>What is electric potential energy?</h3>

The electric potential energy is the work done by a test charge to bring it from infinity to a particular location.

The electric potential energy is given by the relation,

V = kQ/r

where k = 9 x 10⁹ J.m/C ,Q = 3 x 10⁻⁹ C, V =8.09 × 10⁻⁷ J.

Substitute the values into the expression to get the distance between the charges.

8.09 × 10⁻⁷ = 9 x 10⁹ x 3 x 10⁻⁹ / r

r =3.34 x 10⁷ m

Thus, the distance between the charges will be 3.34 x 10⁷ m.

Learn more about electric potential energy.

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2 years ago

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Molodets [167]

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