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777dan777 [17]
4 years ago
9

For refraction to occur in a wave, the wave must

Physics
2 answers:
UNO [17]4 years ago
6 0
Enter a new medium at an angle.
fgiga [73]4 years ago
3 0

The answer is:

C - enter a new medium at an angle

Hope this helps :)

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Action potentials _______.(A) are only found at the axon hillock and along the axon.(B) Two of the answers are correct.(C) are v
MAXImum [283]

Answer:

A

Explanation:

Action potentials are generated at axon hillock because it contains higher density of Na+ channels.From here it is conducted down the axon with equal intensity. It initially depolarizes then polarizes, the order is strict. However, its not affected by the distance they travel.

4 0
3 years ago
What does a lighting bolt and getting shocked by a doorknob have in common?
Marina86 [1]
They both are objects u can get chocked by
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3 years ago
Advantages of solid expansion​
bulgar [2K]

Answer:

One of the most useful use of expansion by heat is for swiches onmany tyes of machinery and home appliancesThemostats in the millions of cars are poerated by using the eaxpansion of metal Themometers arre another example,

5 0
3 years ago
A student hooks up a voltmeter and an ammeter in a circuit to find the resistance of a light bulb. The ammeter read 3 amps and t
yuradex [85]

Answer:

2\Omega

Explanation:

(Assuming the cell in the circuit has 0 internal resistance)

Ohm's Law is given as:

V=IR

Voltage is Current multiplied by Resistance.

We can rearrange this formula to give us:

R=\frac{V}{I}

Now we can plug in our values

R=\frac{6}{3}=2\Omega

7 0
3 years ago
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What is true about the force between charges?
shusha [124]

Answer:

The statements A and D are true

The statements B and C are false

Explanation:

The force between charges can be explained by the Coulomb's Law.

According to Coulomb:

1 - Like charges always repel each other

2- Unlike or opposite charges always attrack each other

3- Force between 2 charges is given by:

F=k\frac{q_1q_2}{r^2}

where F is the force between 2 charges and r is the distance between 2 charges.

We can see that Force F is inversely proportional to the distance r

Which means that when F increase, r decreases and when F decreases, r increases

5 0
4 years ago
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