Answer:
The answer to your question is Q = 10.5 J
Explanation:
Data
C = 4.180 J/kgK
mass = 50 g
Temperature 1 = 298°K
Temperature 2 = 348°K
Formula
Q = mCΔT
Process
1.- Calculate ΔT
ΔT = Temperature 2 - Temperature 1
ΔT = 348 - 298
ΔT = 50°K
2.- Convert g to kg
1000 g -------------- 1 kg
50 g ------------- x
x = (50 x 1)/ 1000
x = 0.05 kg
3.- Substitution
Q = (0.05)(4.180)(50)
4.- Simplification
Q = 10.45 J
5.- Result
Q = 10.5 J
Answer:
The length and the magnification of this telescope are 41 cm and 0.108.
Explanation:
Given that,
Focal length of first lens f= 4.0 cm
Focal length of other lens f'= 37 cm
We need to calculate the length of the telescope
Using formula of length
Put the value into the formula
We need to calculate the magnification of the telescope
Using formula of the magnification
Put the value into the formula
Hence, The length and the magnification of this telescope are 41 cm and 0.108.
Answer:
48.26 m
Explanation:
time to goes up (till stop for a while in the air - maximum height)
vt = vo + a t
0 = 15 + g . t
0 = 15 + (-9.8) . t
9.8t = 15
t = 1.531 s
so the time left to goes down is
4.0 - 1.531 = 2.469 s
height from the top of building can find it by using
vo =√(2gh)
15 = √(2)(9.8).h
15² = 19.6h
h = 225/19.6 = 11.48 m
so the distance of maximum height to the ground is
t = √(2H/g)
2.469 = √(2H/9.8)
2.469² = 2H/9.8
6.096 = 2H/9.8
2H = 6.096 x 9.8 = 59.74 m
so the vertical distance of the building (or the building height's is)
H - h = 59.74 - 11.48 = 48.26 m
The ecological footprint finds the person demand on natural demand.
<h3>What is ecological footprint?</h3>
The ecological footprint is the method promoted by the Global Footprint Network to find human demand on natural capital. The quantity of nature it takes to support people or an economy. It tracks this demand through an ecological accounting system.
Some things which could do to reduce your footprint is Reduce Your Use of Single-Use, Disposable Plastics, Switch to Renewable Energy, Eat Less Meat, Reduce your Waste, Recycle Responsibly, Drive Less, Reduce Your Water Use, Support Local.
Thus, the ecological footprint is to find person demand on natural demand.
Learn more about ecological footprint.
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Answer:
Explanation:
Using the law of the convervation of energy E:
so:
where is the constant of the spring 1, the compressed of the first spring, is the constant of the second spring and is the compressed of the second spring.
Replacing values, we get:
Solving for :