3 years ago

Magnetic fields are produced by particles that are

Physics

1 answer:

Marina86 [1]3 years ago

8 0

Magnetic fields are produced by particles that are moving and charged.

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the answer is A or 900

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what u have to do is add all the forces together and then u get ur answer.

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Freida stands on a hill with a slope of 12 degrees. If her mass is 65 kg, what is the magnitude of the normal force acting on he

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When two equal forces act on the same object in opposite directions, what is the net force?

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(a) $V_{avg}=2.868m/s$

(b) $V_{avg}=5.352m/s$

Explanation:

Given data

x(t)=αt²-βt³

α=1.53m/s²

β=0.0480m/s³

First we need to find distance x at these time so

x(t)=1.53t²-0.0480t³

at t=0

x(0)=1.53(0)²-0.0480(0)³=0m

at t=2

x(2)=1.53(2)²-0.0480(2)³=5.736m

at t=4s

x(4)=1.53(4)²-0.0480(4)³=21.408 m

For(a) Average velocity at t=0s to t=2s

The average velocity is given as

Vavg=Δx/Δt

$V_{avg}=\frac{x_{f}-x_{i} }{t_{f}-t_{i}}\\ As\\x(0)=0m\\x(2)=5.736m\\V_{avg}=\frac{5.736m-0m }{2s-0s}\\V_{avg}=2.868m/s$

For(b) Average velocity at t=0s to t=4s

The average velocity is given as

Vavg=Δx/Δt

$V_{avg}=\frac{x_{f}-x_{i} }{t_{f}-t_{i}}\\ As\\x(0)=0m\\x(4)=21.408m\\V_{avg}=\frac{21.408m-0m }{4s-0s}\\V_{avg}=5.352m/s$

For(c) Average velocity at t=2s to t=4s

The average velocity is given as

Vavg=Δx/Δt

$V_{avg}=\frac{x_{f}-x_{i} }{t_{f}-t_{i}}\\ As\\x(2)=5.736m\\x(4)=21.408m\\V_{avg}=\frac{21.408m-5.736m }{4s-2s}\\V_{avg}=7.836m/s$

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Kinetic energy is the energy of an object in motion. Potential energy is the energy associated with an object

Charra [1.4K]

True!!!!!!!!!!!!!!!!!!!!!!

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