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jeyben [28]
3 years ago
10

10 POINTSSS

Physics
2 answers:
kakasveta [241]3 years ago
7 0

Answer:

Direction & accelerate

pshichka [43]3 years ago
5 0

Answer:

unbalanced forces cause an object to accelerate

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Suppose that a comet that was seen in 563 A.D. by Chinese astronomers was spotted again in year 1951. Assume the time between ob
Mars2501 [29]

Answer:

a=2.77*10^{13}m

R_a=5.49*10^{13}m

Explanation:

The period of the comet is the time it takes to do a complete orbit:

T=1951-(-563)=2514 years

writen in seconds:

2514years*\frac{3,154*10^7s}{1year}=7.93 *10^{10}s

Since the eccentricity is greater than 0 but lower than 1 you can know that the trajectory is an ellipse.

Therefore, if the mass of the sun is aprox. 1.99e30 kg, and you assume it to be much larger than the mass of the comet, you can use Kepler's law of periods to calculate the semimajor axis:

T^2=\frac{4\pi^2}{Gm_{sun}}a^3\\ a=\sqrt[3]{\frac{Gm_{sun}T^2}{4\pi^2} } \\a=1.50*10^{6}m

Then, using the law of orbits, you can calculate the greatest distance from the sun, which is called aphelion:

R_a=a(1+e)\\R_a=2.77*10^{13}(1.986)\\R_a=5.49*10^{13}m

8 0
3 years ago
A rigid tank A of volume 0.6 m3 contains 5 kg air at 320K and the rigid tank B is 0.4 m3 with air at 600 kPa, 360 K. They are co
neonofarm [45]

Answer:

the internal energy of the mixture at final state = 238kJ/kg

Explanation:

Given

V= 0.6m³

m=5kg

R=0.287kJ/kg.K

T=320 K

from ideal gas equation

PV = nRT

where P is pressure, V is volume, n is number of mole, R is ideal gas constant , T is the temperature.

Recall, mole = mass/molar mass

attached is calculation of the question.

6 0
3 years ago
Ball A is dropped from the top of a building of height h at the same instant that ball B is thrown vertically upward from the gr
bixtya [17]
I would answer but it is too long
7 0
3 years ago
Please Help!! This is very tough for me. Try you best to answer these problems!!Pleaseee
Andrews [41]

Answer:

everyone else does this to me so lol

Explanation:

7 0
3 years ago
Read 2 more answers
the mass of a proton is 1.6726 * 10^-24 and the mass of a electron is 9.1093 * 10^-28. What is the difference between the mass o
crimeas [40]
Proton : 0.00000000000000000000000161726

Electron : 0.00000000000000000000000000091093

Take them away =
1.616349e−24
(that's what it gave me on the calculator when I did proton - electron)
3 0
3 years ago
Read 2 more answers
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