Answer:
a and b
water has a higher surface tension than veg oil
isopropyl alcohol boils more esier than water
Explanation:
just did the test trust me :)
A and B statement is true about the substances in this experiment.
A. Water has a higher surface tension than vegetable oil.
B. Isopropyl alcohol boils more easily than water.
What is substance?A substance is a specific type of stuff with specific features. A substance is any pure compound or element. Water is a pure material and a hydrogen-oxygen combination.
A. Water has a higher surface tension than vegetable oil.
Reason:
The force operating at a border between two phases is measured as surface tension. Surface tension at liquid-air interfaces is caused by the higher attraction of liquid molecules to each other than air molecules.
Due to the relatively strong attraction of water. Hence molecules of water have high surface tension.
B.. Isopropyl alcohol boils more easily than water.
Reason:
isopropyl alcohol is a highly flammable liquid that evaporates significantly faster than water, especially when heated. The boiling point of isopropyl alcohol is lower than that of water.
Alcohol is more volatile than water. Hence Isopropyl alcohol boils more easily than water.
To learn more about the substance refer to the link;
https://brainly.com/question/24372098
A crate is pulled by a force (parallel to the incline) up a rough incline. The crate has an initial spped shown in the figure below. The crate is pulled a distance of 8.24m on the incline by a force of 150N force. b) What is the speed of the crate after it is pulled the 8.24M? Answer in units of m/s.
Answer:
(a) Kinetic energy of the cart is 648.32 J.
(b) Speed of the cart is 11.44 m/s.
Explanation:
From the attached below figure we came to know that,
Mass of the crate is 10 kg (m)
Initial speed of the crate is 1.2 m/s (v)
Coefficient of friction on a rough plane is 0.286 (µ)
Force on the cart is 150 N (F)
The distance which crate is moved (d) is 8.05 m.
Calculation of kinetic energy:
Acceleration of the cart:
We know that,
F = F – m × g × sinθ - µ × m × g × cosθ (F = ma)
m × a = F – m × g × sinθ - µ × m × g × cosθ
10 × a = 150 – (10 × 9.8 × sin 27) – (0.286 × 10 × 9.8 × cos 27)
10 × a = 150 – 44.49 – 24.97
10 × a = 80.54
Calculation of speed:
Change in kinetic energy = m × a × d
Change in kinetic energy = 10 × 8.054 × 8.05
Change in kinetic energy = 648.32 J
Explanation:
How high can a human throw a ball if he can throw it with initial velocity 90 mph.
a144.3 m
b 91.82 m
c 82.45 m
d99.82 m
e45.52 m
Answer:
c 82.45 m
Explanation:
To solve this problem, we have to apply the right motion equation.
Given parameter;
Initial velocity = 90mph
So;
Using;
V² = U² - 2gh ; we can solve this problem
V is the final velocity = 0mph
U is the initial velocity
g is the acceleration due to gravity
h is the height
Now insert the parameters and solve;
We need to convert from mph to m/s
1 mph = 0.45m/s
90mph = 40.5m/s
0² = 40.5² - (2 x 9.8 x h)
0 = 1640.25 - 19.6h
-1640.25 = -19.6h
h = 83.7m
PLZ HELP NOW
A boy has a mass of 55 kg. He climbs 15 m up a tree. What is his gain in
GPE? (Don't forget your units)
Answer: mass x height x gravitational field strength (g)
note: gravitational field strength (g) = 10 N/Kg
55 x 15 x 10 = 8250
gpe = 8250j
Explanation:
Which of these charges has the greatest magnitude?
a charge of -5
a charge of -2
a charge of +4
O a charge of +1
Answer:
a charge of +4
that's how I could understand
Help I'm confused basic atom stuff
2. 11
The answer is 11 since there is always the same amount of protons as electrons.
3. 12
4. 13
5. 15
The answer is 15 since the number of protons has to be equal to the amount of electrons.
The addition of electron shells results in _____
from the nucleus.
shielding of electrons
Answer here
Answer:
shielding of electrons
Explanation:
The addition of electrons shells results in the shielding of electrons away from the nucleus, most importantly the nuclear pull resulting from the charge.
The nucleus pulls electrons to itself due to the net positive charge on it. As more electronic shell is added, the effect of the pull weakens outward. The inner shell experiences the nuclear pull more than the outer shell electrons.The effect is responsible for a wide range of properties of elements.
How can you determine the mass number of the daughter product after alpha decay has taken place?
Answer:
Reduce the mass number of the parent by 4
Explanation:
To determine the mass number of the daughter product after alpha decay has taken place, reduce the mass number of the parent by 4.
An alpha particle reduces the mass number of the parent by 4 and the atomic number by 2.
It has the the same structure as an helium atom.
So, since helium has mass number of 4 and atomic number of 2, it reduces the daughter product by this number.
The mass of a meteoroid was found to be 1.24 × 107 kilograms. Write the mass in standard notation.
Answer:
The value we are given in the question is 1.24 * 10^7. This form of writing number is called scientific notation. The standard notation is the normal, regular way of writing numbers. Scientific notation and standard notations are interchangeable.
1.24 * 10^7 written in standard notation will be = 1.24 * 10000000 = 12400000.
Thus, the mass of the meteoroid was 12400000 kg.
Explanation:
In the reaction below, how would adding more of reactant A affect the equilibrium of the system? (2 points) A + B ⇄ C + D a Shift it to the right toward the products. b Shift it to the left toward the reactants. c Equally create more products and reactants. d It would have no effect.
Answer:
It wouldn't effect, sir/maam
For the more produce of product, it will
Depend upon
No of molesPressure TemperatureBut,
I think question is not enough to provide answer
6th grade science If you answer this your the brainiest
Answer:
8. sketches and models helped the astronauts in their training program as they prepare for their missions
9. before building the Mars lander , students need to sketch their design
Solar-powered cars use energy from the Sun to work. A panel on the car absorbs light energy from the Sun, which
then generates an electric current. This electric current, in turn, allows the car to move. Which shows the correct
order of energy transformations that take place in a solar-powered car?
electrical, chemical, kinetic
electrical, kinetic, radiant
radiant, chemical, electrical
radiant, electrical, mechanical
Answer: I Believe Its radiant, electrical, mechanical!
Explanation:
Please correct me if i'm wrong!
Answer:
D) radiant, electrical, mechanical Is correct!
Explanation:
Hope this helps! :)
an object is moving at a constant speed of 5mph and the net force = 0 N. which statement is true
Answer:5mph
Explanation:
As defined in physics "work" is
Answer:
in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement.
Explanation:
Boost your own ______
by living your life, not watching others live their fake ones!
O intelligence
O weight
o self-confidence
O wealth
Answer:
Self-confidence
Explanation:
Boost your own self-confidence by living your life, not watching others live their fake ones!
The other choices do not fit as well as self-confidence does, but it's also a common phrase to say "boost your own self-confidence."
How many significant figures are in 107 moles of sodium
Answer:
3 significant figures
Explanation:
here zero is counted as one of the significant figures since it lies next to an integer.
hence the number has 3 sfg
Calculate the average atomic mass of caarbon given the following information: Carbon-12 12.000 amu 98.89%
Carbon-12 13.003 amu 1.11%
Answer:
12.01
Explanation:
Given parameters:
Abundance of C-12 = 98.89%
mass of isotope = 12amu
Abundance of C - 12 = 1.11%
mass of isotope = 13.003
Unknown:
Average atomic mass of carbon = ?
Solution:
The average atomic mass ;
R.A.M = (mass of isotope x abundance of isotope)-12 + (mass of isotope x abundance of isotope)- 13
Insert the parameters and solve;
R.A.M =( 12 x 98.89%) + (1.11% x 13.003)
R.A.M = 11.87 + 0.14 = 12.01
A basketball with a mass of 0.5 kilograms is accelerated at 2
meters per second2. The net force acting on the mass is
A) 0.5 N
B) ON
C) 1N
D) 2N
Answer: 1N
Explanation: its not 0N.
If a basketball with a mass of 0.5 kilograms is accelerated at 2 meters per second². The net force acting on the mass is 1 Newton, therefore the correct answer is option C.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
As given in the problem, if a basketball with a mass of 0.5 kilograms is accelerated at 2 meters per second², then we have to find out the force acting on the basketball.
The net force acting on the basketball = 0.5 × 2
= 1 N
Thus, the net force acting on the mass is 1 Newton, therefore the correct answer is option C .
To learn more about Newton's second law here, refer to the link given below ;
brainly.com/question/13447525
#SPJ2
What is molasses?
dye
sugar
brown candy
brown syrup
I need help fast please I will give you extra points
Answer: Brown syrup
Explanation:
Answer:
syrup
Explanation:
In a pressure cooker, a lid is screwed tightly onto a pot so that the air pressure in the pot is increased. What effect, if any, will this have on the boiling point of water in the pot?
Answer: the boiling pint will increase
Explanation:
A 60 kg person walks up a 75 m tall hill. How much gravitational
potential energy do they have at the top of the hill?
Answer:
45,000 JExplanation:
The gravitational potential energy of a body can be found by using the formula
GPE = mgh
where
m is the mass
h is the height
g is the acceleration due to gravity which is 10 m/s²
From the question we have
GPE = 60 × 10 × 75
We have the final answer as
45,000 JHope this helps you
A group of friends push a van, using a total force of 220 N. The van moves a distance of 0.2 m. How much work have they done?
Answer:
44
Explanation:
Work = Force X Distance
Which tool can be used to measure the mass of a package being mailed
Answer:
A SCALE
Explanation:
What is the benefit of using simple computational models in a spreadsheet application, like the one used in this course, to predict mechanical energy and related values?
(1 point)
It is easy to calculate new scenarios.
It is easy to learn new concepts.
It is easy to compare different cases.
It is easy to detect calculation errors.
Answer:
Option C would be the correct alternative.
Explanation:
An integrated programming program for arranging, evaluating, and saving analytical results seems to be a spreadsheet. Spreadsheets have been established as computerized analogs to worksheets for manual banking. There are various variables in something like a theoretical model that describes the structure being analyzed. By changing the variables as well as sometimes throughout combination while evaluating the outcome, analysis is performed.The other choices offered aren't relevant to the existing contract below in the description section.
Answer:
c
Explanation:
How did later chemists change Mendeleev’s periodic table?
A. They included physical properties such as melting point and density.
B. They used atomic number instead of atomic mass to organize the elements.
C. They used atomic mass instead of atomic number to organize the elements.
D. They included chemical properties such as bonding power.
what is the dimension of resistivity
Answer:
Are you looking for the formula? because if so:
M L^2 T^-3 I^-2
Explanation:
May I have brainliest please? :)
When ionic bonds form compound structures in a solid state, they arrange in latticed, crystalline patterns.
What does this say about the structure of the compound on the molecular level? What does it say about
the properties of that compound?
Answer:
Structures are determined by two principal factors: the relative sizes of the ions and the ratio of the numbers of positive and negative ions in the compound.
Ionic compounds at a molecular level are arranged in definite patterns to give a crystalline structure leading to a high melting point, high boiling point and high density in ionic compounds.
In ionic bond is formed when a metal transfers electrons to a nonmetal and an ion pair is formed. The ions are held together by strong electrostatic interaction as described by Coulomb's law.
However, the smallest unit of an ionic substance is called the formula unit. The compound arranges itself in definite patterns to form a crystalline lattice. Hence, the structure of ionic compound is highly ordered. This leads to a high melting point, high boiling point and high density in ionic compounds.
Learn more: https://brainly.com/question/14191541
How many forces are used in a catapult ( please help me asap I have a presentation due tomorrow and. I need help starting
Answer:
Hey buddy, here is your answer.Hope it helps you.
Explanation:
A catapult is a launching device that allows us to experimentally observe projectile motion. Once the ball is launched, the only forces acting are gravity and air resistance.
An empty can of mass 120g rests on top of a fire and explodes into three fragments. One fragment travels east at 60m/s and another goes south at 100m/s. Calculate the velocity of the third piece.
Answer:
the answer to your question is B
What time is it in Orlando, FL when it is 10:00 a.m. in Los Angeles, CA?
7:00 a.m.
1:00 p.m.
2:00 p.m.
10:00 a.m.
Answer:
1:00 pm
Explanation:
CA is pacific time zone
FL is Eastern
pacific time is 3 hours less
Answer:
1:00 p.m.
Explanation:
Los Angeles, CA is in the Pacific Standard Time zone which is 3 hours behind the Eastern Standard Time zone, the time zone that Orlando, FL is in.
A substance burns in the presence of oxygen.
Which answer choice names a chemical property in this scenarlo?
O density
O boiling point
solid formation
O flammability
Answer:
D. flammability
Explanation:
I took the test and got it right
