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slava [35]
2 years ago
7

A wave takes 0.5 seconds to complete one cycle. Which characteristic of the wave does this description represent? A. period B. w

avelength C. amplitude D. frequency​
Physics
1 answer:
trasher [3.6K]2 years ago
5 0

Answer:

period

Explanation:

A wave takes 0.5 seconds to complete one cycle. It is called the time period of the wave. It is the time taken by the wave to complete one cycle.

The relation between the time period and the frequency is given by :

T = 1/f

Where

f is frequency of the wave

Hence, the correct option is (a) "period".

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For this exercise, use the position function s(t) = −4.9t2 + 250, which gives the height (in meters) of an object that has falle
nignag [31]

Answer:

t=7.14s

v=-69.972 m/s

Explanation:

Position function

s(t)=-4.9*t^{2}+250

Velocity is the derivative of position function

V(t)=\frac{dx}{dt}\\V(t)=-2*4.9*t\\V(t)=-9.8*t

The time the object hit the ground can be find by the given function know that the position is going to be 0m

s(t)=-4.9*t^{2}+250

s(t)=0\\0=-4.9*t^{2} +250\\t=\sqrt{\frac{250}{4.9}}\\t=7.14s

Check:

s(7.14)=-4.9*(7.14s)^{2}+250\\ s(7.14)=-250+250\\s(7.14)=0m

So the velocity can be find using the time discovery before and using the same function but with the derivate

V(t)=-2*4.9*t\\V(7.14)=-2*4.9*(7.14)\\V(7.14)=-69.972 \frac{m}{s}

The velocity is negative because the object is moving downward

6 0
3 years ago
When saturated air is cooled what happens to its dew point
Eddi Din [679]


When saturated air is cooled, it simply reaches its dew point. Dew point is simply the temperature at which dew begins to form.

Dew point of saturated air is already pre-determined by how much water vapor the air contains. A  state of saturation exists when the air is holding the maximum amount of water vapor possible at the existing temperature and pressure. The higher the dew point, the higher the moisture content of the air. Cooling does not change the dew point of saturated air, rather its the level of saturation. 

So if the air has more moisture, dew will form at a higher temperature and vice versa, but dew point is NEVER EVER GREATER than the air temperature.

6 0
3 years ago
How did you figure that out? (think of FORMULA!)
Minchanka [31]

Answer:

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5 0
3 years ago
The witch in "Hansel and Gretel" owns a house made of cookies and candy for the ___ reason that she is sweet and kind, but actua
hichkok12 [17]
The answer would be A. Ostensible
8 0
3 years ago
Sophia is planning on going down an 8-m water slide. Her weight is 50 N. She knows that she has gravitational potential energy (
RideAnS [48]

Answer:

Explanation:

graph would be a straight line from (0, 0) to (400, 8)

Plot points are

PE = mgh

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4 0
2 years ago
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