How much potential energy does a 40-N medicine ball gain when it is lifted 5 m?
1 answer:
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Answer:
It corresponds to a distance of 100 parsecs away from Earth.
Explanation:
The angle due to the change in position of a nearby object against the background stars it is known as parallax.
It is defined in a analytic way as it follows:
Where d is the distance to the star.
(1)
Equation (1) can be rewritten in terms of d:
(2)
Equation (2) represents the distance in a unit known as parsec (pc).
The parallax angle can be used to find out the distance by means of triangulation. Making a triangle between the nearby star, the Sun and the Earth (as is shown in the image below), knowing that the distance between the Earth and the Sun (150000000 Km), is defined as 1 astronomical unit (1AU).
For the case of ():
Hence, it corresponds to a distance of 100 parsecs away from Earth.
<em>Summary:</em>
Notice how a small parallax angle means that the object is farther away.
Key terms:
Parsec: Parallax of arc second
Answer:
The snail travel at the end of 5 s with a velocity of 12 m/s and the distance of the snail is 22.5 m.
Explanation:
Given that, the initial velocity of the snail is,
And the acceleration of the snail is,
And the time taken by the snail is,
Now according to first equation of motion,
Here, u is the initial velocity, t is the time, v is the final velocity and a is the acceleration.
Now substitute all the variables
Therefore, the snail travel at the end of 5 s with a velocity of 7 m/s.
Now according to third equation of motion.
Here, u is the initial velocity, a is the acceleration, s is the displacement, v is the final velocity.
Substitute all the variables in above equation.
Therefore the distance of the snail is 22.5 m.