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jeyben [28]
3 years ago
11

One astronomical unit, or one AU is defined as the: A. Distance traveled by light in one year B. Mean distance between the Sun a

nd the Earth C. Distance from which Earth-Sun distance will D. Distance traveled by light in one second. Sun distance will sublend an angle of one arcsecond
Physics
1 answer:
Ne4ueva [31]3 years ago
4 0

Answer:

Option (B)

Explanation:

To measure the distance between two objects we use the units of length.

To measure small distances we use, mm or cm or m. But if we measure large distances between two objects we use large units such that kilometer or miles.

To measure the very large distances between two objects we use large units such as Astronomical unit or Parsec.

The Astronomical unit is defied as the distance between earth and Sun.

Thus, the distance between earth and the sun is defined as 1 Astronomical unit.

1 Astronomical unit = 1 A.U. = 1.5 x 10^8 km = 1.5 x 10^11 m

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If an organism can not reproduce,is it still considered living?why?
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The ability to reproduce is essential for a species, but not for an individual. There are some people that can't reproduce, but they're still alive!
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3 years ago
Can lamp that works on a 2.5 v work on a 1.12 v ?​
12345 [234]

Answer:

Explanation:

Thinking about the logics it can but it may be dim because 1.12 is lower than 2,5v so this will mean u lamp may not work or may work very dimely due to the low voltage it is receiving.

5 0
2 years ago
The top of the pool table is 0.810 m from the floor. the placement of the tape is such that 0 m is aligned with the edge of the
8090 [49]
Compute first for the vertical motion, the formula is:

y = gt²/2 

0.810 m = (9.81 m/s²)(t)²/2 

t = 0.4064 s 


whereas the horizontal motion is computed by: 

x = (vx)t 

4.65 m = (vx)(0.4064 s) 

4.65 m/ 0.4064s = (vx)

(vx) = 11.44 m / s
So look for the final vertical speed. 

(vy) = gt 

(vy) = (9.81 m/s²)(0.4064 s) 

(vy) = 3.99 m/s 


speed with which it hit the ground: 

v = sqrt[(vx)² + (vy)²] 

v = sqrt[(11.44 m/s)² + (3.99 m/s)²] 

v = 12.12 m / s
6 0
3 years ago
Which is a way to improve self esteem?
erik [133]

Answer: Positive Talk

Explanation:

5 0
3 years ago
A satellite of Mars, called Phobos, has an orbital radius of 9.4 ✕ 106 m and a period of 2.8 ✕ 104 s. Assuming the orbit is circ
FromTheMoon [43]

Answer:

6.27*10^{23}kg

Explanation:

assume

M= mass of Mars

m=mass of phobos

r=orbital radius

T=period

we can apply F=ma to this orbital motion (considering the cricular motion laws)

where,

F=\frac{GMm}{r^{2} }  and a=rω^2

where ω=\frac{2\pi }{T} and G is the universal gravitational constant.

G = 6.67 x 10-11 N m2 / kg2

F=ma\\\frac{GMm}{r^{2} }=mr(\frac{2\pi }{T} )^{2}\\  M=\frac{r^{3}}{G}  (\frac{2\pi }{T} )^{2}\\M=\frac{(9.4*10x^{6} )^{3}*(2\pi )^{2} }{(2.8*10^{4}) ^{2} *6.67*10^{-11} } \\M=6.27*10^{23}kg

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3 years ago
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