What is the wavelength of these waves?

Answers

Answer 1

Answer: it measure the distance between two consecutive waves within the phase.

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2 ways friction is helpful and 2 ways it does not

Answers

Benefits of friction.

1. Walking. Friction between the soles of our shoes and the ground enables us to walk. The sole of the shoe is held to the ground through friction. This is what is termed as "grip" of the shoe. The more grip a shoes offers, the better and faster we can walk.

2. Writing. Writing using a pen requires friction. It is impossible to hold a pen in the hand without friction because it would slip out. Also the graphite point of the pencil would not make a mark on the paper without friction.

Drawbacks of friction

1. Drag. An aircraft taking off experiences significant friction between it and the air resulting in drag, so much fuel has to be used to create energy to overcome the wind resistance.

2. Surface hindrance. Friction makes moving something heavy from one part of a room to another very difficult. Sliding a large box across the flour takes a lot of energy due to friction between the box and the floor.

Which of the following is true of an effective scientific model? A.)It seldom needs refining because of its detailed accuracy.
B.)It clearly depicts the particular set of characteristics being modeled.
C.)It is an exact visual representation of the characteristics being modeled.
D.)It is the same size and color as the scientific phenomena being demonstrated.

Answers

CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC IDK

This runner completed a 100 meter race with a time of 13.75 seconds. what was her average speed

Answers

Taking into account the definition of speed, you get that the average speed of the runner is 7.27 $(m)/(s)$ .

It is necessary to know that speed is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it.

In other words, speed can be defined as the amount of space traveled per unit of time with which a body moves and can be calculated using the expression:

$Speed= (distance traveled)/(time)$

In this case:

distance traveled= 100 meters
time= 13.75 seconds

Replacing these values in the speed definition:

$Speed= (100 m)/(13.75 s)$

Solving:

Speed= 7.27 $(m)/(s)$

In summary, the average speed of the runner is 7.27 $(m)/(s)$ .

Learn more about average speed:

Answer: 7.27 m/s

Explanation: The average speed of an object in an interval of time is the distance traveled by the object divided by the duration of the interval.

Distance traveled= 100 m

Time taken = 13.75 s

Average speed= $\frac{\text {distance traveled}}{\text {Time taken}}$

Average speed= $(100m)/(13.75s)=7.27m/s$

What is a beaker? can you also post a picture of what it ;looks like for me?

Answers

It's a piece of glassware used for handling liquids, usually in a laboratory,
although I use one as a coffee cup.

They have markings on the side, like a kitchen measuring cup, so you can
measure different amounts of liquid, and they have a lip for pouring.

They're also usually made of a special type of glass (borosilicate) so that
they won't crack when very hot liquids are poured in.

Here's a picture of a beaker with 200 milliliters of some blue stuff in it.

it looks like a bottle with a pointed tip

What is meant by the word acid

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an acid typically has a ph. of under 7 and neutralises alkali

noun1.a chemical substance that neutralizes alkalis, dissolves some metals, and turns litmus red; typically, a corrosive or sour-tasting liquid of this kind."rainwater is a very weak acid"2.CHEMISTRYa molecule or other entity that can donate a proton or accept an electron pair in reactions.adjective1.containing acid or having the properties of an acid; in particular, having a pH of less than 7."poor, acid soils"2.sharp-tasting or sour that from google .

Our solar system consists of the sun, planets, moons, asteroids, rock particles, dust, and gases that orbit the sun. From a scientific perspective, which makes the solar system a system?

Answers

A solar system is made up of objects that interact with one another

The sun and planets makes our solar system

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You want to prepare a solution with a concentration of 200.0μM from a stock solution with a concentration of 500.0mM. At your disposal, you have 5-mL and 10-mL transfer pipets and volumetric flasks of sizes 100, 250, 500, and 1000mL. Which of the following serial dilutions will give you the 200.0μM solution?