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Kobotan [32]
3 years ago
9

How do helmets protect your head? a. By creating a large area to spread out the pressure of a blow to your head. b. By focusing

the pressure of a blow into a small area. c. By creating a vacuum that protects your head. d. By creating a pressure gradient that traps energy away from your skull.
Physics
2 answers:
vagabundo [1.1K]3 years ago
8 0
I think its c.by creating a pressure gradient that traps energy away from your skull.

Andru [333]3 years ago
5 0
Your answer is A.

I hope this helps
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3 years ago
We intend to measure the open-loop gain (LaTeX: A_{open}A o p e n ) of an actual operational amplifier. The magnitude of LaTeX:
Korvikt [17]

Answer:

voltage divider,  R₂ = 1000 R₁

measuring the output in the resistance R₁

Explanation:

Let's analyze the situation, in an op amp in open gain loop, the gain is maximum G = 10⁶ V / V

in this case the signal generator gives a minimum wave of 1 10⁻³ V, after passing through the amplified it becomes 10³ V which saturates the oscilloscope.

To solve this problem we must use a simple voltage divider, for this we use the fact that in a series circuit the voltage is the sum of the voltages of each element.

If we use two resistors whose relationship is

            R₂ / R₁ = 10³

            R₂ = 1000 R₁

When measuring the output in the resistance R₁ we have the desired divider, with a tolerance range, for the minimum output of the generator (1 10⁻³V) we have a reading of V = 1 V in the oscilloscope, for which we can use voltage up to 10V on the generator

8 0
3 years ago
A meteorologist tracks the movement of a thunderstorm with Doppler radar. At 8:00pm the storm was 55 mi northeast of her station
Rus_ich [418]
At 8:00 pm, the velocity of the storm is 55 mi northeast. Assuming that the direction is exactly northeast, the angle is 45°
At 11:00 pm, the velocity is 75 mi north. The angle is 90°
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and
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What part of an atom is involved in electricity and magnetism?*
-BARSIC- [3]

Answer:

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I hope this helps!

6 0
3 years ago
Read 2 more answers
40 Points!!!!!!!
marshall27 [118]
D. Ted associated being asked a question with embarrassment.
7 0
3 years ago
Read 2 more answers
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