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Naily [24]
4 years ago
10

Two astronauts are playing catch with a ball in space. The first astronaut throws the ball;and

Physics
1 answer:
seraphim [82]4 years ago
3 0

recoils and must be tethered or he's gone.

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A satellite orbiting the moon very near the surface has a period of110 min. What is free-fall acceleration on the surface of the
Norma-Jean [14]

Answer:

1.54 m/s²

Explanation:

The free-fall acceleration is calculated as

g = w²r

Where w is the angular velocity of the satellite and r is the radius of the moon.

The angular velocity can be calculated as

w=\frac{2\pi}{T}

Where T is the period, so

T = 110 min = 110 x 60 s = 6600 s

Then,

w=\frac{2\pi}{6600\text{ s}}=9.52\times10^{-4}\text{ rad/s}

Finally, the radius of the moon is r = 1.7 x 10⁶ m, so the free-fall acceleration is

\begin{gathered} g=w^2r \\ g=(9.52\times10^{-4})^2(1.7\times10^6) \\ g=1.54\text{ m/s}^2 \end{gathered}

Therefore, the answer is 1.54 m/s²

5 0
1 year ago
What was the first car fitted with an alternator, rather than a direct current dynamo?.
ehidna [41]

Answer:

The first vehicles fitted with an alternator was vehicles during WWll.

Chrysler Corporation fitted an alternator on the Valiant 1960 as standard equipment

Explanation:

7 0
2 years ago
Read 2 more answers
What causes high and low tides?
Paladinen [302]
The gravitational effect of the moon causes both the high tide and low tides.
4 0
4 years ago
Read 2 more answers
Help with these three
Elenna [48]
The first: alright, first: you draw the person in the elevator, then draw a red arrow, pointing downwards, beginning from his center of mass. This arrow is representing the gravitational force, Fg.
You can always calculate this right away, if you know his mass, by multiplying his weight in kg by the gravitational constant
g = 9.81 \frac{m}{s {}^{2} }
let's do it for this case:
f_{g}  = m \times g \\ f _{g}  = 65kg \times 9.81 \frac{m}{s {}^{2} }  = 637.65
the unit of your fg will be in Newton [N]
so, first step solved, Fg is 637.65N
Fg is a field force by the way, and at the same time, the elevator is pushing up on him with 637.65N, so you draw another arrow pointing upwards, ending at the tip of the downwards arrow.
now let's calculate the force of the elevator
f = m \times a \\ f = 65 \times 5 \frac{m}{s {}^{2} }  \\ f = 325n
so you draw another arrow which is pointing downwards on him, because the elevator is accelating him upwards, making him heavier
the elevator force in this case is a contact force, because it only comes to existence while the two are touching, while Fg is the same everywhere
8 0
3 years ago
What is the name of the process the puts adenosine diphosphate (ADP) and phosphate (P) together to reform ATP?
hoa [83]
I think the correct answer is hydrolysis. The name <span>of the process that puts adenosine diphosphate (ADP) and phosphate (P) together to reform ATP is called hydrolysis. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
6 0
3 years ago
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