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3 years ago

2. Neutrons have a ____ charge. a. positive b. negative c. neutral

Physics

2 answers:

IRISSAK [1]3 years ago

7 0

C netural because it has no charge

AnnyKZ [126]3 years ago

3 0

Answer:

b. negative

Explanation:

neutrons have a negative charge and protons have a proton has a positive charge

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17 copper wires of length l and diameter d are connected in parallel to form a single composite conductor of resistance R. What

Lubov Fominskaja [6]

Answer:

$\frac{D}{d} = 4.12$

Explanation:

As we know that resistance of one copper wire is given as

$r = \rho \frac{L}{a}$

here we know that

$a = \pi (\frac{d}{2})^2$

now we have

$r = \rho \frac{L}{\pi (\frac{d^2}{4})}$

$r = \rho \frac{4L}{\pi d^2}$

now we know that such 17 resistors are connected in parallel so we have

$R = \frac{r}{17}$

$R = \rho \frac{4L}{17 \pi d^2}$

Now if a single copper wire has same resistance then its diameter is D and it is given as

$R = \rho \frac{4L}{\pi D^2}$

now from above two equations we have

$\rho \frac{4L}{\pi D^2} = \rho \frac{4L}{17 \pi d^2}$

$D^2 = 17 d^2$

now we have

$\frac{D}{d} = 4.12$

3 0

3 years ago

Which of these will cause the highest tides? A. when the Sun, Moon and Earth are in a straight line B. when all of the planets a

marusya05 [52]

Answer:

A. when the Sun, Moon and Earth are in a straight line

Explanation:

The highest tide is formed when the sun, moon, and also the earth are in alignment. This high tide is known as spring tides.

Spring tides happen when we have a new moon or a full moon. With the earth, sun and moon aligning. We have lunar and solar tide forming a reinforcement with each other causing high tides or extreme tides. we have collectively, their gravitational pull on water of the earth to become stronger

5 0

3 years ago

Solar panels allow us to harness ___________ energy and convert it to __________ energy to heat water.

vichka [17]

Solar energy
thernal energy

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4 years ago

A student has two 150kΩ resistors and two 200ߤF capacitors from which to create an RC circuit. Determine each of the possible ci

FrozenT [24]

Answer:

The time constants 30 seconds and the can form an RC Charging circuit.

Explanation:

Time constant, τ, is measured in terms of τ = R x C, in seconds, where R is the value of the resistor in ohms and C is the value of the capacitor in Farads

If R = 150 kΩ = 150000Ω

and C = 200 μF = 0.0002 F

τ = 150,000 × 0.0002

<u>= 30 seconds.</u>

A capacitor, (C) connected in series with a resistor, (R) forms a RC Charging Circuit connected across a DC battery supply (Vs) via a mechanical switch, with transient time (time required to charge capacitor) = 5τ

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3 years ago

One alternative to burning non-renewable fuels, which harm the environment, could be to burn?

Rashid [163]

Answer:

The answer to that is C. natural gas

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3 years ago

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