3 years ago

Plsss help me with physics

1 answer:

8 0

When you are on a roller coaster you feel like you way less when you are going down the ride. you feel heavier when you are going up the hill. :)

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The energy source used to produce most of the electrical energy in the United States______________.

Olegator [25]

The most used energy is coal i believe.

5 0

4 years ago

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A copper wire 12 cm long and a mass of 16 g is in a magnetic field of 1.2 T oriented perpendicular to the wire. What current wou

Ugo [173]

Answer:

Current, I = 1.08 A

Explanation:

Given that,

Length of the copper wire, l = 12 cm = 0.12 m

Mass of the wire, m = 16 g = 0.016 kg

Magnetic field, B = 1.2 T

The magnetic field is oriented perpendicular to the wire. We need to find the current in the wire.

Magnetic force, F = BIL

Force of gravity, F' = mg

F' = F

$BIL=mg$

$I=\dfrac{mg}{BL}$

$I=\dfrac{0.016\times 9.8}{1.2\times 0.12}$

I = 1.08 A

So, the current through the wire is 1.08 A. Hence, this is the required solution.

8 0

4 years ago

Which state of matter contains particles that move slightly in a fixed posistion

Pavlova-9 [17]

Solid moves slightly in a fixed position

6 0

4 years ago

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Calculate the mechanical advantage if a machine allows you to move a 60 newton rock by only exerting 15 newtons of force.

murzikaleks [220]

Answer:

4 Newtons

Explanation:

I think it's 4 because mechanical advantage = output force/input force
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6 0

3 years ago

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A crate is sliding down a ramp that is inclined at an angle 30.6 ° above the horizontal. The coefficient of kinetic friction bet

Vlada [557]

Answer: $1.95 m/s^2$

Explanation:

Given

inclination $\theta =30.6^{\circ}$

coefficient of kinetic friction $\mu =0.36$

As crate is moving Down therefore friction will oppose the motion

using FBD

$mg\sin \theta -f_r=ma$

$f_r=\mu N$

$f_r=\mu mg\cos \theta$

$mg\sin \theta -\mu mg\cos \theta =ma$

$a=g\sin \theta -\mu g\cos \theta$

$a=g(\sin (30.6)-0.36\cdot \cos (30.6))$

$a=9.8\times 0.199$

$a=1.95 m/s^2$

6 0

3 years ago