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Studentka2010 [4]

2 years ago

6

Two parallel circular plates with radius carrying equal-magnitude surface charge densities of are separated by a distance of How

much stored energy do the plates have? A. 120 B. 360 C. 12 D. 37

2 answers:

Paha777 [63]2 years ago

8 0

I’m thinking it’s a but I’m not that smart

SpyIntel [72]2 years ago

6 0

Answer:

I guess it is A. I am not sure

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g calculate the effectiveness radiation dosage in sieverts for a 79 kg person who is exposed 6.8x10^9

Elza [17]

Answer:

The answer is " $\bold{dosage = 0.031 rem}$ "

Explanation:

please find the complete question in the attached file.

Given value:

$m = 79\ kg \\\\n = 3.4 \times 10^9 \\\\E = 5.5 \times 10^{-13} \\\\ RBE = 15$

$\to E = n E\\$

$= 3.4 \times 10^9 \times 5.5 \times 10^{-13} \\\\ = 1.87 \times 10^{-3}$

$\to E(absorbed) = 1.87 \times 10^{-3} \times 0.87 = 1.63 \times 10^{-3}$

calculating the radiation absorbed per kg:

$= \frac{1.63 \times 10^{-3}}{79} \\\\ = 2.06 \times 10^{-5} \\\\ = 0.00206 \ rad$

$\to Dosage = 0.00206 \times 15 \\$

$= 0.031 \ \ rem$

4 0

2 years ago

1. How much work is done by a person if he lifts a load of 500 kg upto a height of 2m?

iren [92.7K]

Explanation:

if we take g=9.8m/s^2

F=mg

m=500

F=500×9.8=4900N

h=2

so w=mgh

w=4900×2

=9800j

3 0

2 years ago

The length (L) of a simple pendulum is directly proportional to the square of the time period (T). Which type of graph can best

iris [78.8K]

L=T^2 so that would be a parabola

8 0

3 years ago

Read 2 more answers

A spool of thread, free to unwind, is on a horizontal surface (with friction) and pulled directly upward (+y) at all times. The

k0ka [10]

Answer:

The Correct Answer is "D"

Explanation:

For Detail of this answer Please see the attached file.

6 0

2 years ago

zhenek [66]

Answer:

Acceleration of the bullet while moving into the clay is -312500 ms⁻²

Explanation:

Given data

Initial velocity (v₁) = 250 m/s Final velocity (v₂) = 0 m/s

Distance (s)= 0.1 m acceleration (a) = ?

Using 3rd equation of motion

2as = v₂²- v₁²

2 × a × 0.1 = 0² - 250²

0.2 × a = -62500

a = -62500/0.2

a = -312500 m/s²

Here negative sign indicate that bullet slow down and it is deceleration i.e negative acceleration.

3 0

2 years ago