1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ymorist [56]
3 years ago
9

A student has a block of wood. She places it on a wooden desk. She uses a spring scale to measure how much force is needed to sl

ide the block of wood across the desk. The student then places the block of wood on a piece of sandpaper and repeats the process. The type of force
the student is investigating is _______.

A. gravitational
B. magnetic
C. electricity
D. friction
Chemistry
2 answers:
yarga [219]3 years ago
6 0
D:friction



Reason:because they are trying different types of things to rub against it and see if it will slow it down



Please give me the bran list answer !
Firdavs [7]3 years ago
4 0
D: i know this is correct not much behind that tho
You might be interested in
How many kilowatt-hours of electricity are used to produce 4.50 kg of magnesium in the electrolysis of molten mgcl2 with an appl
ratelena [41]
First, we need to determine the half reaction of magnesium. It would be expressed as:

Mg2+ + 2e- = Mg

Given the mass of magnesium metal that is produced, we calculate the total charge of the electrolysis by the relations we can get from the half reaction. We do as follows:

4.50 kg Mg ( 1000 g / 1 kg ) ( 1 mol / 24.305 g ) ( 2 mol e- / 1 mol Mg ) ( 96500 C / 1 mol e- ) = 35733388.2 C

We are given the applied EMF in units of V. This value is equal to J/C. So, 5 V is equal to 5 J/C.

35733388.2 C (5 J/C) = 178666941 J
178666941 J ( 1 kW-h / 3.6x10^6 J ) = 49.63 kW-h
3 0
3 years ago
Fatty acids are carboxylic acids with a long, unbranched hydrocarbon chain. There are three main classes of fatty acids. Classif
LuckyWell [14K]

Answer:

Coconut oil, Olive oil and Sunflower oil

Explanation:

Fatty acids are carboxylic acids with a long unbranched chain of carbon and hydrogen atoms.

There are three main classes of fatty acids which are explained as under:

1. Saturated Fatty acids: These fatty acids have long carbon chain with two hydrogen atoms bonded to each carbon atom. This saturation of fatty acids make the fatty acids more stable towards high temperature. These fatty acids becomes solid at room temperature. Coconut oil and butter are the examples of saturated fatty acids.

2. Monounsaturated Fatty Acids: In a long carbon chain, if there is a carbon atom which is double bonded with another carbon atom and rest is saturated with hydrogen atoms, because of this single double-bond, the fatty acid is termed as monounsaturated fatty acids. These fatty acids are liquid at room temperature but solidify in refrigerator. Olive oil is an example of such fatty acids.

3. Polyunsaturated Fatty Acids: In a long carbon chain, if there are two or more than two carbon atoms which are double bonded with each other and rest is saturated with hydrogen atoms, because of multiple double bonds, such fatty acids are termed as polyunsaturated fatty acids. Because of higher unsaturation, these fatty acids are liquid in both normal room temperature and in refrigerator. Such unsaturation also make them unfit for cooking purposes. Sunflower oil, Soyabean oil and Flaxseed oil are examples of polyunsaturated fatty acids.

8 0
4 years ago
Write short note on
WITCHER [35]

I hope it helps you ❤️❤️❤️❤️

4 0
3 years ago
Read 2 more answers
How do the functions of the two groups of peripheral nerves differ?
gizmo_the_mogwai [7]

Answer:

One moves the arm one moves the legs???

Explanation:

8 0
3 years ago
Read 2 more answers
Chemistry screen shot below plzzzzzzz help i've been stuck forever
Oxana [17]

Answer:

True

Explanation: Imagine the Electrons is by the nucleus which give more energy.

8 0
3 years ago
Read 2 more answers
Other questions:
  • How many atoms of hydrogen are represented by the formula below? 4H2SO4 A. 1 B. 4 C. 8 D. 28
    13·2 answers
  • What is the mass, in grams, of 1.20×1021 molecules of aspirin, c9h8o4?
    9·2 answers
  • In relation to chemical solutions, which term does not express a degree of saturation?
    8·2 answers
  • What were the characteristics of global independence<br>movements after WWII?​
    11·1 answer
  • The word "atom" means:
    7·1 answer
  • Which essential amino acid helps to alleviate insomnia and can be found in turkey?
    7·2 answers
  • 50 points please do this In your OWN WORDS DO NOT COPY FROM SOMEWHERE ELSE!
    6·1 answer
  • PLS SOMONE PLS FILL OUT I WILL GIVE BRAINLIEST HURRYYY
    5·1 answer
  • How many grams of calcium are in 2.65 g of CaCO3?
    9·1 answer
  • When gravity is the only force acting on an object, the object is said to be in__.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!