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4 years ago

How many neutrons does an element have of its atomic number is 50 and its mass number is 156?

Physics

1 answer:

pshichka [43]4 years ago

3 0

Ok so I think you would first subtract

156 - 50 = 106

Since atomic number is based on the number of protons, you should subtract the 50 from 156

106 should be your answer

Hope this helps!

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if a ball on a string swung in a circles and string suddenly breaks.the ball will move into what direction?

horrorfan [7]

Answer:

The ball will swing in the direction it was going once the string breaks.

Explanation:

8 0

3 years ago

A metal ring 4.60 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpend

telo118 [61]

Answer:

A. Ein = 8.05*10^-4 V/m

B. Clockwise sense

Explanation:

A. the magnitude of the electric field induced in the ring is obtaind by using the following formula:

$\int E_{in} \cdot ds=-\frac{d\Phi_B}{dt}$ (1)

Ein: induced electric field

ds: differential of a path of the ring

ФB: magnetic flux in the ring

The Ein vector is parallel to ds in the complete ring. Furthermore, the area of the ring is constant, hence, you have in the equation (1):

$\int E_{in}ds=E_{in}(2\pi r)=-A\frac{dB}{dt}\\\\E_{in}=-\frac{A}{2\pi r}\frac{dB}{dt}$ (2)

dB/dt = -0.280T/s (it is decreasing)

A: area of the ring = π(r/2)^2= (π/4) r^2

r: radius of the ring = 4.60/2 = 2.30 cm

Then, you replace the values of all variables in the equation (2):

$E_{in}=-\frac{(\pi/4)r^2}{2\pi r}\frac{dB}{dt}=\frac{r}{8}\frac{dB}{dt}\\\\E_{in}=-\frac{0.0230m}{8}(-0.280T)=8.05*10^{-4}\frac{V}{m}$

hence, the induced electric field is 8.05*10^-4 V/m

B. The induced current in the ring produced a magnetic field that is opposite to the magnetic field of the magnet. The, in this case you have that the induced current is in a clockwise sense.

6 0

4 years ago

Which component in a nuclear power plant actually produces the electrical energy?

taurus [48]

How a nuclear reactor works is that a nuclear reaction goes on in basically a very big tank of water, it acts like a kettle it heats up water which turns into steam to power a turbine so the actual component would either be the turbine or the steam.

3 0

3 years ago

Read 2 more answers

The spaceship Enterprise 1 is moving directly away from earth at a velocity that an earth-based observer measures to be 0.62c. A

podryga [215]

Answer:

The answer is "0.92 c"

Explanation:

$v_1\ (earth) = 0.62 \ c \\\\v_2\ ( enterprise ) = -0.30$