3 years ago

Question 13 (1 point)

Physics

1 answer:

Zolol [24]3 years ago

7 0

The correct answer is C: 2!

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A physicist performing a sensitive measurement wants to limit the magnetic force on a moving charge in her equipment to less tha

lawyer [7]

Answer:

Maximum charge will be $6.66\times 10^{-9}C$

Explanation:

We have given force ion the moving charge $F=10^{-12}N$

Maximum speed of the moving charge v = 30 m /sec

Magnetic field $B=5\times 10^{-5}T$

We have to fond the charge

Force on moving charge is given by

$F=qvB$

So $10^{-12}=q\times 30\times 5\times 10^{-5}$

$q=6.66\times 10^{-9}C$

Maximum charge will be $6.66\times 10^{-9}C$

5 0

4 years ago

What is the total capacitance in units of mF, of the two capacitors connected in series, as shown in the diagram, when C1 = 45 m

elena-14-01-66 [18.8K]

Answer:

16.7 mF

Explanation:

The total capacitance of two capacitors connected in series is given by the formula:

$\frac{1}{C}=\frac{1}{C_1}+\frac{1}{C_2}$

in our problem, we have:

C1 = 45 mF is the capacitance of the first capacitor

C2 = 26 mF is the capacitance of the second capacitor

Substituting into the equation, we find:

$\frac{1}{C}=\frac{1}{45 mF}+\frac{1}{26 mF}=0.06 mF^{-1}\\C=\frac{1}{0.06 mF^{-1}}=16.7 mF$

7 0

3 years ago

Read 2 more answers

Experimental tests have shown that hammerhead sharks can detect magnetic fields. In one such test, 100 turns of wire were wrappe

Triss [41]

B = µo*N*I/2r

So B = 4πx10^-7*150*1.6/2*3.5 = 4.31x10^-5T

7 0

3 years ago

Potassium-41 has 19 protons. How many neutrons does this isotope have ?<br>

AysviL [449]

Answer:

20 neutrons

Explanation:

This will get you the mass number of the most abundant potassium isotope. You now know that the most abundant isotope of potassium contains 20 neutrons. All isotopes of potassium will have the same number of protons inside their nucleus, i.e. 19 protons.

I hope this helps you.

3 0

3 years ago

A ball is thrown horizontally from a cliff at a speed of 10 m/s. you predict that its speed 1 s later will be slightly greater t

Veseljchak [2.6K]

The horizontal component of speed remains constant at 10 m/s.
After 1 s, a vertical component of speed = gt = 9.8(1) = 9.8 m/s is added to the horizontal speed.
The size of the total speed of the ball after 1 s = √(10²+9.8²) = √196.04 ≈ 14.0 m/s <=
You are correct.

6 0

3 years ago

Read 2 more answers