A wave with a period of 0.008 second has a frequency of

Answers

Answer 1

Answer:
The frequency of a wave is the reciprocal of its period.

A period of 0.008 sec means a frequency of

1 / 0.008 sec = 125 per sec . (125 Hz)

Answer 2

Answer:

A wave with a period of 0.008 second has a frequency of

1 /.008 = 125 Hz

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When a force is exerted on an object, does a large force always produce a larger change in the object's momentum than a smaller force does?
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Why voltmeter and resistence are parallel in ohm's law.

Answers

Never mind Ohm's Law. A voltmeter measures the difference in electrical potential
between two points. So if you want to measure the difference in electrical potential
between two points, you touch one probe of the meter to each point, and somehow
the internal guts of the meter are able to sense the difference in electrical potential
between the two points.

If the two points have non-reactive impedance (a resistance) between them, then the
difference in electrical potential between the two points, as indicated by the meter,
will be close to (resistance between the two points) x (current flowing between them).

9. Which of the following is true regarding current in an external circuit? A. A direct current constantly switches direction of flow to match the change of charge at each terminal.
B. Direct current always moves from the positively charged terminal to the negatively charged terminal.
C. Alternating current always moves from the positively charged terminal to the negatively charged terminal.
D. The flow of an alternating current switches direction when a generator's terminals change its charge.

Answers

The statement that best describes an external circuit is "D. The flow of an alternating current switches direction when a generator's terminals change its charge." The main difference between direct and alternating current is the direction of flow. Direct current follows only one direction from negatve to positive, while alternating current changes direction periodically.

Answer: D. The flow of an alternating current switches direction when a generator's terminals change its charge.

Explanation: I JUST TOOK THE PF EXAM AND GOT IT CORRECT!!!

A rectangular in-ground pool is 45 feet long, 15.5 feet wide and 5.5 feet deep. How many cubic feet of water does the pool hold?

Answers

Answer: 3836.25 cubic ft.

Explanation: Simply find the volume of the pool. In this case it's a rectangular prism so we use the volume equation for a rectangular prism:

1) Volume = length x width x height

2) Volume = 45 ft x 15.5 ft x 5.5 ft

3) 3836.25 cubic ft.

Fill in the blank with the correct response.Employing the use of a(n)
will help you manage a STEM project.

Answers

Answer:

technicians

Explanation:

An isometry preserves
orientation
distance
direction

Answers

Answer:

Distance

Explanation:

Isometry preserves the distance while transformation is made in between metric spaces. When a metric space is mapped on to another or itself, the distance between two points remains same in the images in the mapped space as well. Example: rotation and translation.

Thus, isometry preserves the distance.

Answer:

distance

Explanation:

What type of reaction is shown below? Ba(OH)2 + 8H20 + 2NH4NO3 + heat ?10H2O + 2NH3 + Ba(NO3)2

Answers

Double Displacement Reaction

An element from each of two compounds switch places.
Example: compound + compound ⇒ compound + compound

Chemical reactions are processes in which substances change into other substances. A chemical reaction takes place if one or more of these occur:
Color changes - Different combinations of molecules reflect light differently. A color change indicates a change in molecules.
Heat content changes- In all chemical reactions, the heat content of the reactants and the heat content of the products is never the same. Sometimes the difference is great and can be easily detected. At other times, the difference is slight and more difficult to detect.
Gas produced - Whenever a gaseous product forms in a liquid solution, bubbles can be seen. A colorless gas produced in a reaction of solids is much harder to detect.
Precipitate forms- Precipitates are insoluble products formed by a reaction taking place in a liquid solution. This insoluble product will eventually settle to the bottom, but might immediately appear by turning the clear solution cloudy.

Answer:

Endothermic.

Explanation:

I took the same test and this was the correct answer.

I hope this helps you!

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Which of the following statements is an accurate description of vibrations? A. Neither ultrasonic nor infrasonic vibrations can be heard by humans. B. The frequency of infrasonic vibrations is much too high to be heard by humans. C. Ultrasonic vibrations have a frequency lower than the range for normal hearing. D. Infrasonic vibrations are used in sonar equipment as well as to detect flaws in steel castings.