I’m stuckkkkkk please help

Answer:

transverse and longitudinal

Answer:

Its constructive and destructive

Explanation:

Explanation:

And this is y I should of paid attention in that one science class in middle school that taught this...

(￣▽￣;)

Answer: Neutrons

Explanation:

Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons. The difference in the number of neutrons between the various isotopes of an element means that the various isotopes have different masses.

Answer:

neutrons

Explanation:

isotopes has the same proton number but different nucleon number because there's different numbers of neutrons in isotopes

Answer: 6

Explanation: none needed lol

Answer:In the picture

Explanation: None

Answer:A

Explanation:

To do the experiment

The experimental setup is the part of the scientific method that is done to prove the hypothesis. The test variable of the experiment is the height of the tray as it may cause an effect. Thus, option C is correct.

The independent variable has been the test variable that does not depends on other variables and is manipulated by the researcher. It has no fixed value and parameter and is subject to alteration so as to cause an effect on the other variable.

The height of the tray is the independent variable and the mass of the sand is the dependent variable. The height affects the mass of the sand eroded at the bottom. The speed and amount of water have been the controlled variable.

Therefore, option C. the height of the tray with the sand is the independent variable.

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Answer:

a = 6 m/s².

Explanation:

If we have the object with mass of 75 kg and force on it is 50 N then according to given statement its acceleration is 3m/s².

When we double the force on same object by keeping the mass constant then the acceleration will also double. It means force will be 100 N and acceleration will be 6 m/s².

But if we we increase the mass then acceleration goes to decrease.

So,

mass = 75 kg

F = 50 N

a = 3m/s²  then by double the amount of force,

mass = 75 g

F = 100 n

a = 6 m/s².

This is actually explain the newton second law. This law stated that the acceleration of object is depend upon its mass and force acting on it.

F=  m. a

a = F/m

Thus acceleration is directly proportional to the force and inversely  proportional to the mass.

Answer:

The correct answer is A.

Explanation:

The acids with hydrogen atoms in them are the ones that dissolve best in water and when they do, they get diluted, raising their pH level by releasing hydrogen ions (H+) into the solutions.

So when acids get dissolved in water, positively charged hydrogen atoms are released.

The answer is A.

I hope this helps.

Answer:Whereas weather refers to short-term changes in the atmosphere, climate describes what the weather is like over a long period of time in a specific area. Different regions can have different climates. ... Weather tells you what to wear each day. Climate tells you what types of clothes to have in your closet.

Explanation:well bc i am in 10th grade this kinda easy lol hoped i helped

Answer:

Explanation:

Weather is the current state of weather while, climate is the most common weather of that region over a time of 30 years.

Given parameters:

Distance of ATV  = 60miles

Time = 2hrs

Unknown:

Speed  = ?

Solution:

Speed is a scalar quantity. It has magnitude but no direction. Mathematically, speed is distance divided by time.

                      Speed  = [tex]\frac{distance}{time}[/tex]

 Input the parameters;

              Speed  = [tex]\frac{60}{2}[/tex]  = 30miles/hr

The speed of the ATV is 30miles/hr

Answer:

Just Try ur best ok

Explanation:

Answer:

Explanation:

Heat moves from hot sand to the bottoms of your feet by conduction. Conduction is the transfer of heat between objects that touch each other.

Heat moves from hot sand to the bottoms of your feet by conduction.Hence Option (A) is correct.

Heat conduction is a phenomenon that occurs through the interaction of neighbouring atoms and molecules, transferring their energy/heat (partially) to their neighbours.

This is the most significant means of heat transfer within a solid and between solid objects in thermal contact.

Conduction is the transfer of heat between objects that touch each other.

Therefore, Heat moves from hot sand to the bottoms of your feet by conduction.Hence Option (A) is correct.

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Answer:

Friction is a force that occurs whenever two objects rub against each other, such as a slide and a person's backside. Without friction, a slide would accelerate the rider too quickly, resulting in possible injury. Certain materials called lubricants can reduce the effects of friction. This is why water park slides are much faster than playground slides; the water acts as a lubricant. Sitting on wax paper can also reduce the amount of friction.

Explanation:

Answer:

1) 5 protons, 2) 5, 3) boron, 4) 6 Neutrons, 5) 10.811 ≈ 11, 6) Boron-9

Answer:

mercury or Hg

Explanation:

i looked at the periodic table haha

hope this helps and is right <3

Volume displaced by jewelry, V = 278 - 200 = 78 ml

Also, 1 ml = 1 cm³

We know, by water displacement method the volume of water displaced by an object it equals to its own volume.

So, volume of jewelry, V = 78 ml = 78 cm³.

Also, weight of jewelry is , w = 122 gm.

Now, we know density is given by :

[tex]d=\dfrac{w}{V}\\\\d=\dfrac{122\ gm}{78\ cm^3}\\\\d=1.56\ gm/ cm^3[/tex]

Hence, this is the required solution.

Answer:

Fe2O3

Explanation:

if we have to answer whether it is wrong or correct then it is wrong because the correct answer would be Fe (s) + O2 (g) = Fe2O3 (s) because the valences will be exchanged

Answer:

Explanation:

Thank you ☺️☺️

Answer:

The movement is random

Explanation:

Answer:

Air from the trumpet moved it

Explanation:

Answer:

- Failed internal wiring

- reaching a hard to get metal item

- keeping a item on a metal surface

Explanation:

Please give me BRAINLIEST :))

Answer:

Nitrogen = 15

Hydrogen = 60

Phosphorus = 5

Answer: uh

Explanation:

Answer: 50 kg

Explanation: formula is

m= p/v

m=800 kg m/s : 16m/s

m= 50kg

idk tho hope this helps

Answer:

40233.6

hope this helps

plz mark brainleist

Compounds are made of the various elemental atoms joined together. Water and salt are compounds that can be present in their pure form. Thus, option A is false.

A compound is a substance formed by the bond between the atoms of the elements that shares, transfers, donates, or gains electrons to join and interlink chemically.

The pure substance is characterized by the presence of only a single type atom of the element. They have invariability and can exist in various phases with constant composition.

Water and salt are compounds made of two or more atoms of different elements that have specific physical properties and distinct chemical properties.

Therefore, option A. the compounds cannot be pure substances is false.

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Answer:

a. [Ar] 4s2 3d7

Explanation: