Answer:
15660.712J
Explanation:
Q = m × c × del T
Q(energy) = ?
m (mass) = 98.5g
c = 4.184J
del T = 75-37 = 38 °C
Q = 98.5 × 4.184 × 38
Q = 15660.712 J
What is the kinetic energy of a 100 kg bear running at 3 m/s
Answer:
The answer is 450 JExplanation:
The kinetic energy of a body can be found by using the formula
[tex]KE = \frac{1}{2} m {v}^{2} \\ [/tex]
where
m is the mass
v is the velocity
From the question
m = 100 kg
v = 3 m/s
We have
[tex]KE = \frac{1}{2} \times 100 \times {3}^{2} \\ = 50 \times 9[/tex]
We have the final answer as
450 JHope this helps you
Do you guys have viruses wit this website
please help this is due in 30 minutes!!
Answer:
Hello. The answer is A (10)
Explanation:
If you memorize the periodic table it will be very easy to answer.
But if you don't know،
The solution is to count the electrons number
In an atom usually electrons number is equal with protons number
In this shape there are 10 electrons
So there are 10 protons in nucleus.
How does Newton’s laws explain motion
Explanation:
Newton's second law is a quantitative description of the changes that a force can produce on the motion of a body. It states that the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it.
what is atomic mass
Answer:
the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.
Answer:
The atomic mass is the mass of an atom.
Explanation:
ultraviolet radiation has a higher frequency than visible light. which type of light wave carries more energy?
a=they carry the same amount of energy
b=visible light
c= ultraviolet radiation
Answer:
The answer to this question is C; ultraviolet radiation
Explanation:
The the reason for this is because it carries more energy per photon than visible light does. Light travels at a speed of 299,792 kilometers per second (about 186,282 miles per second).
what is meant by hydrogen bond
Answer:
The attraction between two atoms that already participate in other chemical bonds is a hydrogen bond
A train in Japan can travel 813.5 miles in 5 hours
Answer:
162.7miles/hr
Explanation:
Given parameters:
Distance covered by the train = 813.5miles
Time taken = 5hours
Unknown:
Speed of the train = ?
Solution:
Speed is a physical quantity.
It is mathematically expressed as;
Speed = [tex]\frac{distance}{time}[/tex]
So, input parameters and solve;
Speed = [tex]\frac{813.5}{5}[/tex] = 162.7miles/hr
If the reaction force is _____, a net force is created and will accelerate the object.
Answer:
directly proportional
Explanation:
have a good day
Answer:
Unbalanced is the answer
the elements boron, silicon, germanium, and arsenic be classified into? *
Two examples of silicate minerals are
Answer:
who know
Explanation:
Add 92.2 km to 9426 m and report the answer in
km.
92.2 km + 9426 m =
km
Help me plz
to convert m into km we have to divide it by 1000.so,
9426/1000=9.426km
92.2km+9.426km=101.626km.
Answer:101.6
Explanation:
how to determine the atomic mass?
Answer: To calculate the atomic mass add up the mass of protons and neutrons.
I hope I helped!
A total of eighteen electrons can be placed into the 3rd energy level.
Explain WHY?
Answer:
each principal energy level above the second contains, in addition to one s orbital and three p orbitals, a set of five d orbitals, called the d sublevel. The five d orbitals can hold up to 10 electrons. Thus, the third level holds a maximum of 18 electrons: 2 in the s orbital, 6 in the three p orbitals, and 10 in the five d orbitals.
Explanation:
is ice forming and then melting back into water a physical change
yes it isssss abcdefghijk
Which statement desrcribes an intensive property of matter? -it is the same for every sample of a single substance -it depends on how a substance was formed -it is the same for every sample of every substances -it depends on the amount of substances present
Answer:
The statement which describes an intensive property of matter is - :
it is the same for every sample of a single substance.
Explanation:
It is the same for every sample of a single substance. -: Since a substance 's intense property does not depend on either mass or volume, it is the same for each sample of a single substance. Hence , this statement is correct .It depends on how a substance was formed -: Intensive property do not depend upon the amount of the substance or the formation of the sample . Therefore this statement ifs wrong about intensive property .It is the same for every sample of every substances -: This is not possible to be for every sample of the substance , a every substance have different qualities. Hence this statement is also incorrect.it depends on the amount of substances present -: This is the characteristic of a extensive property of matter that relies on the amount of the material/substance. This assertion is, therefore, not valid.Hence , the correct option is A (it is the same for every sample of a single substance).
A 10.04-g block of solid tin at 14.77 °C is immersed in a 24.11-g pool of liquid ethylene glycol with a temperature of 63.52 °C. When thermal equilibrium is reached, what is the temperature of the tin and ethylene glycol? Specific heat capacities: tin = 0.213 J/g °C; ethylene glycol = 2.36 J/g °C
Answer:
61.75 °C
Explanation:
According to the law of conservation of energy,
Qtin = - (Qliquid)
(m×c×∆T)tin = -(m×c×∆T) ethylene glycol
Where; m = mass
c = specific heat capacity
∆T = change in temperature
According to the information given in this question;
For tin: m= 10.04g, c= 0.213 J/g °C, initial temperature= 14.77 °C, final temperature=?
For ethylene glycol: m= 24.11g, c= 2.36 J/g °C, initial temperature= 63.52 °C, final temperature=?
Hence; (m×c×∆T)tin = -(m×c×∆T) ethylene glycol
10.04 × 0.213 × (T - 14.77) = - {24.11 × 2.36 × (T - 63.52)}
2.139 (T - 14.77) = - {56.899 (T - 63.52)}
2.139T - 31.59 = -56.899T + 3614.225
2.139T + 56.899T = 31.59 + 3614.225
59.038T = 3645.815
T = 3645.815/59.038
T = 61.75 °C
The final temperature of tin and ethylene glycol is 61.75 °C
What is the volume of kristas rock
Answer:
30
Explanation:
Measure the water rised in the beaker which is 180 and subtract 150 and you get 30
Which statement about the masses of subatomic particals is true?
A. Electrons and neutrons have similar masses.
B. Neutrons and protons have similar masses.
C. Electrons, protons and neutrons have similar masses.
D. Electrons, protons and neutrons have very diffren´t masses.
You put a drop of food coloring into a container of room temperature water and watched as the color spread out in the water. Describe what caused the color to spread. (You do NOT stir it)
Answer:the dye is heavier than the water so the substances fuse together instead of sitting at the top much like the phenomenon with oil and water combination
Have a good day!
what makes a substance a molecule? it’s 7th grade science
Answer:
Molecular substances are made when two or more atoms join together by covalent bonds.
Explanation:
I hope this helps. I took the same class.
How do I do this problem???
Answer:
i believe it's c
Explanation:
my reason is that if you look at the electrons 2 is the most comm
1. What happens to the height of the skater over time?
Answer:
if their genes want to grow any more, they'll grow.
Explanation:
How would you arrange the objects below from greatest to least volume?
A balloon
A water bottle
A bottle of soda
A rock
Answer:
A balloon
A bottle of soda
A rock
A water bottle
Explanation:
If the black dot is sound, which direction is the sound in the picture moving? *
Answer:
Left or up, either one of those
Explanation:
Answer:
isnt the answer RIGHT
Explanation:
is the volume of a coffee cup closer to 300 cm cubed or 300 dm cubed
Answer:
It is closer to 300 cm cubed
Explanation:
The volume of a coffee cup is closer to 300 cm cubed because their american volumes are around 10 ounces, and 10 ounces equals about 300 cm cubed. Hope it helps!
can u see water vapour by a microscope?
Answer:
It can be formed either through a process of evaporation or sublimation. Unlike clouds, fog, or mist which are simply suspended particles of liquid water in the air, water vapour itself cannot be seen because it is in gaseous form
Explanation:
hope it help
Answer:
No. Unlike clouds, fog, or mist which are simply suspended particles of liquid water in the air, water vapour itself cannot be seen because it is in gaseous form
Identify the heterogeneous mixtures.
Group of answer choices
salad
water
vegetable soup
apple juice
trail mix
brass
Two people are pulling on a rope, like in the picture below. The person on the left pulls at 5 N and the person on the right pulls 5 N. What is the net force on the rope?
Answer:
The net force is 0
Explanation:
because both people on either side are pulling the rope with the same force
What do these two changes have in common?
sauce burning on a stove
dry ice sublimating and becoming a gas
Select all that apply.
Both are caused by heating.
Both are only physical changes.
Both conserve mass.
Both are chemical changes.
Answer:
Both are caused by heating and both are physical and chemicals.
Explanation:
The similarity between the two changes that have common things are
A. Both are caused by heating.
C. Both conserves mass.
D. Both are chemical changes.
What are chemical and physical changes?The term “physical change” refers to a change in an object's appearance. When there is a change in the surroundings of the object, such as a rise in temperature or pressure, a physical change takes place.
When candles are burned, the wax melts, but as soon as the temperature drops, the wax hardens and solidifies once more.
Here, chemical changes happen because these changes can not be undone again. When a substance changes their appearance, they always have the same mass.
Thus, the correct options are A. Both are caused by heating, C. Both conserve mass, and D. Both are chemical changes.
To learn more about chemical and physical changes, refer to the link:
https://brainly.com/question/8632035
#SPJ2