Convert the temperatures -30c 10c and 50c to Kelvin and Fahrenheit
Answers
To convert from Celcius to Kelvin just add 273
-30C + 273 = 243 Kelvin
10C + 273 = 283 Kelvin
50C + 273 = 323 Kelvin
To convert from Celcius to Fahrenheit is C * 1.8 +32
-30C * 1.8 + 32 = -22F
10C * 1.8 + 32 = 50F
50C * 1.8 + 32 = 122F
Hope that helps!
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Compare relative age with absolute age.
Answers
The height of the steel beam is 30.9 m
Explanation:
The gravitational potential energy of an object is the energy possessed by an object due to its position in the gravitational field. Near the Earth's surface, the gravitational potential energy of an object is given by
where
m is the mass of the object
g is the acceleration of gravity
h is the height of the object above the ground
For the steel beam in this problem, we have:
U = 100,000 J is the potential energy
m = 330 kg is the mass
Solving for h, we find the height of the steel beam:
Learn more about gravitational potential energy:
#LearnwithBrainly
100° C
212°C
373°C
Answers
100° Cshe can expect once the water begins to boil.
Option: B
Explanation:
The boiling point for water at 1 pressure atmosphere of sea level is 212 ° F or 100 ° C. That value isn't a fixed. Water's boiling point is dependent on the ambient pressure, which varies based on elevation. At a lower temperature, water boils as one gains altitude like getting higher on a hill, and boils at a higher temperature if one increases the atmospheric pressure of returning to or below sea level.
It also relies upon the water's purity. Water containing contaminants like salted water boils at a level higher than pure water. This effect is called acceleration of the boiling point and is one of the material's colligative features.
Answer:
option b) 100°
Explanation:
Answers
Let's get started:
1. a rusting bicycle
This is NOT a physical change because a new substance is formed.
3Fe+ 2O2 -> Fe3O4
2. breaking glass
This is a physical change.
3. melting butter
This is a physical change.
You just change the phase of butter from solid to liquid, but still there is no new substance formed.
4. burning leaves
When you burn something organic, CO2 will be formed.
Therefore, this is NOT a physical change.
5. cutting your hair
This is a physical change.
6. frying an egg
When you fry an egg, iron (Fe) in the yolk reacts with hydrogen sulfide (H2S) in the white to form iron sulfide (FeS).
Therefore, this is NOT a physical change.
7. water evaporating
With the same reason as 3, this is a physical change.
8. mixing salt and water
This is a physical change (with the same reason as 3).
NaCl (s)+ H2O -> NaCl (aq)
Hope this helps~
Answer:-
- breaking glass
- melting butter
- cutting your hair
- water evaporating.
- mixing salt and water
Answers
Answer:
because a complete equation must have all the elements present on the left hand side of the arrow on the right hand side of the arrow as well, and to be balanced there must be the same number of each type of atom, so both A and C are full equations, but A is not balanced because although there are two oxygen atoms on each side of the arrow, there is only one hydrogen atom on the left and two on the right, thus the right hand side is 'heavier' than the left and the equation is unbalanced.
Explanation:
Answers
Answer: 0.6m
Explanation:
Given that:
force = 4.5 N
Work done = 2.7J
Distance moved by the book = ?
Since work is done when force is applied on an object over a distance, apply the formula:
work = force x distance
2.7J = 4.5N x distance
Distance = (2.7J / 4.5N)
Distance = 0.6 m
Thus, the book was moved 0.6 metres far
Answers
an example is a coin
An insulator is something which cannot allow electricity to pass through it
an example is plastic (or plastic cotton reel, plastic container ect.)
Static electricity is when you rub two things together to create static
I'm not sure if i helped on the last question but i am definitely sure of the first ones