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3 years ago

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What happens when you decrease the thrust on your scooter? A. You stop B. Nothing happens C. You fall over D. You speed up Reset

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1 answer:

mars1129 [50]3 years ago

4 0

Answer:

D. You speed up

Explanation:

hope it helps

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Two coils are wound around the same cylindrical form. When the current in the first coil is decreasing at a rate of -0.245 A/s ,

Airida [17]

Answer:

Complete question:

c.If the current in the second coil increases at a rate of 0.365 A/s , what is the magnitude of the induced emf in the first coil?

a. $M= 6.53\times10^{-3} H$

b.flux through each turn = Ф = $4.08\times10^{-4} Wb$

c.magnitude of the induced emf in the first coil = e= $2.38\times10^{-3} V$

Explanation:

a. rate of current changing = $\frac{di}{dt}=[tex]M=\frac{1.60\times10^{-3} V}{0.240\frac{A}{s} }}$ [/tex]

Induced emf in the coil =e= $1.60\times10^{-3} V$

For mutual inductance in which change in flux in one coil induces emf in the second coil given by the farmula based on farady law

$e=-M\frac{di}{dt}$

$M=\frac{e}{\frac{di}{dt} }$

$M=\frac{1.60\times10^{-3} }{-0.245}$

$M= 6.53\times10^{-3} H$

b.

Flux through each turn=?

Current in the first coil =1.25 A

Number of turns = 20

using MI = NФ

flux through each turn = Ф = $\frac{6.53\times10^{-3}\times1.25}{20}$

flux through each turn = Ф = $4.08\times10^{-4} Wb$

c.

second coil increase at a rate = 0.365 A/s

magnitude of the induced emf in the first coil =?

using $e=-M\frac{di_{2} }{dt}$

$e= 6.53\times10^{-3} \times 0.365$

magnitude of the induced emf in the first coil = e= $2.38\times10^{-3} V$

4 0

3 years ago

No one falls out during a loop on a<br> rollercoaster because of _____.

Roman55 [17]

Answer:

Seatbelts

Explanation:

Resistance to change in motion. it presses tour body outside of the loop, keeping you inside the cart

8 0

3 years ago

Read 2 more answers

What do you notice about the way energy is transferred between objects with different masses?

Galina-37 [17]

I notice that the energy how it’s transferred it goes down slowly and the heat waves slowly rise up when conducting air

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3 years ago

Three struts are pinned together at A, B, and C to form a triangular

ZanzabumX [31]

Answer:

a. Fab = 3000 N tension

Fac = 1500 N compression

Fbc = 3000 N compression

b. Aluminum for AB, titanium for AC and BC.

c. Fc = 4000 N

Explanation:

a. Draw free body diagrams of the pins at A and B, assuming that all internal forces are in tension (pulling away from the pin).

Sum of the forces on A in the x direction:

∑F = ma

H − Fab sin 60° = 0

Fab = H / sin 60°

Fab = 2600 / sin 60°

Fab = 3000 N

Sum of the forces on A in the y direction:

∑F = ma

-Fab cos 60° − Fac = 0

Fac = -Fab cos 60°

Fac = -H / tan 60°

Fac = -2600 / tan 60°

Fac = -1500 N (it's negative, so it's actually in compression).

Sum of the forces on B in the x direction:

∑F = ma

Fab cos 30° + Fbc cos 30° = 0

Fbc = -Fab

Fbc = -H / sin 60°

Fbc = -3000 N (it's negative, so it's in compression)

b. AB is in tension, so it should be aluminum.

AC and BC are in compression, so they should be titanium.

c. Draw a free body diagram of the entire triangle ABC. Assume there is both a horizontal and vertical reaction force at C, and assume they point in the +x and +y directions.

Sum of the forces in the x direction:

∑F = ma

Fcx + H = 0

Fcx = -H

Fcx = -2600 N

Sum of the forces in the y direction:

∑F = ma

Fcy − V = 0

Fcy = V

Fcy = 3000 N

The magnitude of the net force is:

Fc² = Fcx² + Fcy²

Fc² = (-2600 N)² + (3000 N)²

Fc = 4000 N

4 0

3 years ago

Testable hypotheses that lead to experiments usually describe a relationship between

Harlamova29_29 [7]

a measurable variable and a subjective opinion.

Explanation:

Testable hypothesis that leads to experiments usually describes a relationship between a measurable variable and a subjective opinion.

In testing a hypotheses through experiments, we often design our work to suit the use of two variables which are the measurable variable and the subjective opinion.

This often takes the shape of dependent and independent variables in an experiment.
Measurable variables can either be dependent, independent or controlled variables.
The subjective opinion is the scientific logic that governs hows two or more variables are related.

learn more:

Experiments brainly.com/question/5096428

#learnwithBrainly

5 0

3 years ago