2 years ago

As the change in speed at the boundary of two materials is greater what happened to the angle of refraction (please help )

Physics

1 answer:

Studentka2010 [4]2 years ago

7 0

The answer is B.
Hope this helps.

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A rowboat has a momentum of 241.5 kg*m/s. if the rowboat has a mass of 115kg, what its it's speed?

Lera25 [3.4K]

Momentum = mass*velocity(or speed)

241.5 kg*m/s = 115 kg * v
v = 241.5 kg*m/s / 115 kg = 2.10 m/s

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2 years ago

The electric potential difference across the membrane of a body cell is 0.070 V (higher on the outside than on the inside). The

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Answer:

The electric field is $8.75 \times 10^{6}~v~m^{-1}$ and the ditection is from outer to inner side of the membrane.

Explanation:

We know the electric field ( $\vec{E}$ ) is given by $\vec{E} = - \nabla V$ , 'V' being the potential.

In 1-D, it can be written as

$E=\dfrac{V}{d}$

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Given, $V = 0.070~V~$ and the thickness of the cell membrane is $d = 8.0 \times 10^{-9}~m$ .

Therefore the created electric field through the cell membrane is

$E = \dfrac{0.07~V}{8 \times 10^{-9}~m} = 8.75 \times 10^{6}~m~s^{-1}$

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3 years ago

In the nucleus, the a)...... have b)...... charge.

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A plate in a parallel-plate capacitor has an area of 0.03 m2 and is 0.5 × 10–3 m from the other plate. The space between the pla

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4 x 10^-9F

Explanation:

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3 years ago

If you had an unlimited amount of mass to hang, what would be the range of possible accelerations for the system?

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The entire cart/hanging mass system follows the same law, ΣF = ma. This means that plotting force vs. acceleration yields a linear relationship (of the form y = mx).

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