Answer:
(7.8) x (9.8 m/s) = 76.44 m/s
during the time he spent falling.
Since his falling speed was zero when he 'stepped' off of the top,
he hit the ground at 76.44 m/s.
That's about 170 miles per hour.
I'll bet he left one serious crater!
I hope this helps too! :D
Explanation:
Answer:Copper
Explanation:
Given
mass of copper sphere ![m_{cu}=50 gm](https://tex.z-dn.net/?f=m_%7Bcu%7D%3D50%20gm)
mass of Aluminum sphere ![m_{Al}=25 gm](https://tex.z-dn.net/?f=m_%7BAl%7D%3D25%20gm)
Specific heat of copper ![c_{cu}=0.4 J/g-^{\circ}C](https://tex.z-dn.net/?f=c_%7Bcu%7D%3D0.4%20J%2Fg-%5E%7B%5Ccirc%7DC)
Specific heat of Aluminium ![c_{Al}=0.9 J/g-^{\circ}C](https://tex.z-dn.net/?f=c_%7BAl%7D%3D0.9%20J%2Fg-%5E%7B%5Ccirc%7DC)
Heat require to reach body temperature
suppose temperature difference is ![\Delta T](https://tex.z-dn.net/?f=%5CDelta%20T)
![Q_{cu}=m_{cu}\cdot c_{cu}\cdot \Delta T](https://tex.z-dn.net/?f=Q_%7Bcu%7D%3Dm_%7Bcu%7D%5Ccdot%20c_%7Bcu%7D%5Ccdot%20%5CDelta%20T)
![Q_{cu}=50\cdot 0.4\cdot \Delta T=20\Delta T](https://tex.z-dn.net/?f=Q_%7Bcu%7D%3D50%5Ccdot%200.4%5Ccdot%20%5CDelta%20T%3D20%5CDelta%20T)
So Copper sphere will come to body temperature first because it has less specific heat .
Answer: 4.17 m
Explanation: According to the law of conservation of energy, the elastic potential energy of the elastic material is used in launching the mass hence giving the body it potential energy.
Elastic potential energy = kx²/2
Potential energy = mgh
Where m = mass of object = 0.24kg
g = acceleration due to gravity = 9.8 m/s²
h = height =?
k = spring constant = 850 N/m
x = compression = 31cm = 0.13m
kx²/2 = mgh
kx² = 2× mgh
850 ×(0.31)² = 2 × 9.8 × h
h = 850 × (0.31)²/ 2 × 9.8
h = 81.685 / 19.6
h = 4.17 m
Answer:
A body will become positively charged when some electrons will come out from the body.Thus, positive charge is due to deficiency of electrons.
1. A dead organism is different from a non-living organism due to the fact that a non-living organism has never lived so it has not died. In the past the dead organism was alive to which it may be dead now.
2. No, the linnaeus system of classification can always change. Due to a new species being found or something not fitting certain descriptions. The Linnaeus system is based off of these important elements. <span>domain, kingdom, phylum, class, order, family, genus, species.
3. I'm sorry but I just don't understand number 3 the most. Do you mean Tigers in general, Tiger goldfish, tiger barbs? If you could clarify it I might be able to help.</span>