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Maslowich
3 years ago
15

Mars was once similar to Earth in that

Physics
1 answer:
Nataly_w [17]3 years ago
6 0
B. liquid water flowed on its surface
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Someone please help me will give BRAILIEST!!!!!
nataly862011 [7]
It uses C. Kinetic Energy
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3 years ago
A roller coaster is stopped on a track. When the engineer presses a launch button on the coaster, the coaster moves forward. Exp
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A roller coaster is stopped on a track. When the engineer presses a launch button on the coaster, the coaster moves forward. Explain this change in terms of balanced and unbalanced forces.
5 0
3 years ago
A gray kangaroo can bound across a fl at stretch of ground 810 with each j ump can-ying it 10 m from the takeoff point. if the k
ivanzaharov [21]
The formula for maximum distance is 
X = (V^2 / g) * sin (2 * theta) 
10 = (V^2 / 9.8) * sin (2 * 20) 
10 = (V^2 / 9.0) * sin(40) 
10 = (V^2 / 9.8) * 0.324 
v^2 = (10 / 0.324) * 9.8 
V^2 = 302.47
v = 17.39 meters/sec (takeoff speed) 

The horizontal speed is  = Takeoff Speed * Cos(20) = 17.39 * 0.910 = 16.341 meters / sec 
6 0
4 years ago
Two stars in a faraway part of the Milky Way are orbiting each other as a binary star system. By
natita [175]

Answer: M_{total}= 1.85

Explanation: Estimate the total mass of a binary system is done by a reformulation of <em>Kepler's Third Law</em>, which states that the square of the period of a planet's orbit is proportional to the cube of its semimajor axis, i.e.:

a^{3}=(M_{1}+M_{2})P^{2}

where

a is semimajor axis in astronomical units (AU);

P is period measured in years;

M_{1}+M_{2} is total mass of the two-stars system;

For the two stars faraway in the Milky Way:

1 year is equivalent of 365 days, so period in years:

P=\frac{594}{365}

P = 1.63 years

Calculating total mass:

a^{3}=(M_{total})P^{2}

M_{total}=\frac{a^{3}}{P^{2}}

M_{total}=\frac{1.7^{3}}{1.63^{2}}

M_{total}= 1.85

<u>The total mass of the two-object system is 1.85 mass units.</u>

3 0
4 years ago
An object of mass 10 kg is at rest when a net force of 20 N acts on it in a direction east. The acceleration produced on the obj
torisob [31]
It's a since a = F / m
6 0
3 years ago
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