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3 years ago

12

Why is the sign of the emf of the second peak opposite to the sign of the first peak?

1 answer:

eimsori [14]3 years ago

7 0

Because AC emf is a sine wave

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A flea jumps straight up to a maximum height of 0.400 m . what is its initial velocity v0 as it leaves the ground?

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For an object`s motion, the Kinematic equation is,

$v^2=v_{0}^2+2ah$

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As according to question,

$v=0m/s,a=g-9.8 m/s^2$ and $h = 0.400 m$

Thus, putting these values in above equation, we get

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3 years ago

Read 2 more answers

1. Calculate the total binding energy of 12

ahrayia [7]

Answer:

1. B = 79.12 MeV

2. B = -4.39 MeV/nucleon

3. B = 2.40 MeV/nucleon

4. B = 7.48 MeV/nucleon

5. B = -18.72 MeV

6. B = 225.23 MeV

Explanation:

The binding energy can be calculated using the followng equation:

$B = (Zm_{p} + Nm_{n} - M)*931 MeV/C^{2}$

<u>Where</u>:

Z: is the number of protons

$m_{p}$ : is the proton's mass = 1.00730 u

N: is the number of neutrons

$m_{n}$ : is the neutron's mass = 1.00869 u

M: is the mass of the nucleus

1. The total binding energy of $^{12}_{6}C$ is:

$B = (Zm_{p} + Nm_{n} - M)*931.49 MeV/u$

$B = (6*1.00730 + 6*1.00869 - 12.011)*931.49 MeV/u = 79.12 MeV$

2. The average binding energy per nucleon of $^{24}_{12}Mg$ is:

$B = \frac{(Zm_{p} + Nm_{n} - M)}{A}*931.49 MeV/u$

<u>Where</u>: A = Z + N

$B = \frac{(12*1.00730 + 12*1.00869 - 24.305)}{(12 + 12)}*931.49 MeV/u = -4.39 MeV/nucleon$

3. The average binding energy per nucleon of $^{85}_{37}Rb$ is:

$B = \frac{(Zm_{p} + Nm_{n} - M)}{A}*931.49 MeV/u$

$B = \frac{(37*1.00730 + 48*1.00869 - 85.468)}{85}*931.49 MeV/u = 2.40 MeV/nucleon$

4. The binding energy per nucleon of $^{238}_{92}U$ is:

$B = \frac{(92*1.00730 + 146*1.00869 - 238.03)}{238}*931.49 MeV/u = 7.48 MeV/nucleon$

5. The total binding energy of $^{20}_{10}Ne$ is:

$B = (Zm_{p} + Nm_{n} - M)*931.49 MeV/u$

$B = (10*1.00730 + 10*1.00869 - 20.180)*931.49 MeV/u = -18.72 MeV$

6. The total binding energy of $^{40}_{20}Ca$ is:

$B = (Zm_{p} + Nm_{n} - M)*931.49 MeV/u$

$B = (20*1.00730 + 20*1.00869 - 40.078)*931.49 MeV/u = 225.23 MeV$

I hope it helps you!

8 0

3 years ago