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PtichkaEL [24]
2 years ago
14

Question 12 A wave has a wavelength of 7.96 m and travels at 30.67 m/s. What is the frequency of the wave?​

Physics
1 answer:
KonstantinChe [14]2 years ago
7 0

Answer:

0.2597hertz

Explanation:

first of all we have to calculate time.

time is given by speed/distance

hence=30.67/7.96

=3.85s

frequency is given by 1/time

=1/3.85

=0.2597hertz

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The internal pressure increases as the gas is heated

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A grating with 250 grooves mm is used with an incandescent light source. Assume the visible spectrum to range in wavelength from
NeTakaya

The number of orders that one can see the entire visible speed is 5 orders.

<h3>How to calculate the orders?</h3>

From the information given, it should be noted that the grating spacing will be:

d = (1.00 × 10^-4) / 250

d = 4000nm

Therefore, the number of times that are needed to complete the order will be the same as the number of orders which the long wavelength time will be visible. This will be:

= (4000 × sin 90°)/700

= 5.71

Therefore, the maximum orders will be 5.

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7 0
1 year ago
Which of the following statements about neurons are NOT true?
emmasim [6.3K]

Answer:

The correct answers to the question are

The following statements about neurons are NOT true

A. The resting membrane potential is generally in the range of -40 mv to -75 mv.

C. Neurons repolarize by opening chloride channels on the membrane.

D. An action potential can occur when the neuron's sodium gates open.

Explanation:

A. The resting membrane potential is generally in the range of -40 mv to -75 mv.

Not true the resting potential for neurons range from -70 to -80 mv

B. Maintaining resting membrane potential requires the use of energy from ATP True

The potential of the membrane arises from the splitting of potassium ions from the intracellular anions by agents powered by ATP

C. Neurons repolarize by opening chloride channels on the membrane

Not True

Repolarization occurs by the outward transit of the positively charged K⁺ from the cell

D. An action potential can occur when the neuron's sodium gates open.

Not True

An action potential takes place once the neuron transmits information along an axon. An action potential results when different ions pass through the membrane of the neuron

5 0
3 years ago
A certain gasoline engine has an efficiency of 35.3%. What would the hot reservoir temperature be for a Carnot engine having tha
levacccp [35]

Answer:

The temperature of hot reservoir is 669.24 K.

Explanation:

It is given that,

Efficiency of gasoline engine, \eta=35.3\%=0.353

Temperature of cold reservoir, T_C=160^{\circ}C=433\ K

We need to find the temperature of hot reservoir. The efficiency of Carnot engine is given by :

\eta=1-\dfrac{T_C}{T_H}

T_H=\dfrac{T_C}{1-\eta}

T_H=\dfrac{433}{1-0.353}

T_H=669.24\ K

So, the temperature of hot reservoir is 669.24 K. Hence, this is the required solution.

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3 years ago
World class swimmers can swim the 100 meter in about 55 seconds what is their approximate average speed
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About 1.8181 meters per second

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