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4 years ago

The Earth-centered model of the Solar System contains____planets.

Physics

2 answers:

Liula [17]4 years ago

8 0

Answer:

Explanation:

the geocentric and heliocentric models of the solar system contained the movements of the Sun, the Moon, and the five known planets. Which were Mercury, Venus, Mars, Jupiter, and Saturn.

andreyandreev [35.5K]4 years ago

5 0

Explanation:

The Solar System is the gravitation bound system.
In this system sun is the head of family along with many kids named as planets the largest are the eight planets and the remainder kids named as dwarf planets and small Solar System bodies.
The Solar System formed about 4.6 billion years back from the gravitational collapse of a giant interstellar molecular cloud.
The majority of the system's mass is enclosed by the Sun, with the majority of the remaining mass occupied by Jupiter.

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vladimir2022 [97]

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3 years ago

Relative motion can best be defined as

creativ13 [48]

Relative motion is the motion of an object relative to another object,
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3 years ago

A machine exerts a 100 N force to the right over a 5.00 meter length in 4.00 seconds. Calculate the power output of this machine

bixtya [17]

125 W is the power output of this machine.

Answer:

Explanation:

Power is defined as the amount of work done on the system to move that system from its original state within the given time interval. So it can be determined by the ratio of work done with time interval. As work done is the measure of force required to move a system to a certain distance. Work done is calculated as product of force with displacement.

So in the present case, the force is given as 100 N, the displacement is given as 5 m and the time is given as 4 s, then power is

$Power = \frac{Work done}{Time}$

As Work done = Force acting on the machine × Displacement

So $Power = \frac{(Force * Displacement)}{Time}$

Power = $\frac{(100*5)}{4}$ =125 W

So, 125 W is the power output of this machine.

6 0

3 years ago

What is meant by the term law of conservation?

GalinKa [24]

Answer:

Explanation:

any law stating that some quantity or property remains constant during and after an interaction or process, as conservation of charge or conservation of linear momentum.

4 0

3 years ago

Read 2 more answers

A skateboarder travels on a horizontal surface with an initial velocity of 4.0 m/s toward the south and a constant acceleration

Alenkinab [10]

Answer:

a) 0.32 m b) -2.4 m c) 1.08 m/s d) -4 m/s

Explanation:

As the x and y axes (as chosen) are perpendicular each other, the movements along these axes are independent each other.
This means that we can use the kinematic equations for displacements along both axes.
In the x direction, as the only initial velocity is in the south direction (-y axis), the skateboarder is at rest, so we can write:

$x =\frac{1}{2}*a*t^{2} (1)$

In the y-direction, as no acceleration is acting on the skateboarder, we can write the following displacement equation:

$y = v_{0y} * t (2)$

For t = 0.6s, replacing by the givens, we get the position (displacement from the origin) on the x-axis, as follows:

$x =\frac{1}{2}*a*t^{2} =\frac{1}{2} * 1.8 m/s2*(0.6s)^{2}\\ x = 0.32 m$

From (2) we can get the position on the y-axis (displacement from the origin) as follows:

$y = v_{0y} * t = -4 m/s * 0.6 s = -2.4 m$

In the x- direction, we can find the component of the velocity along this direction, as follows:

$v_{fx} = a*t$

Replacing by the values, we have:

$v_{fx} = a*t = 1.8 m/s2 * 0.6 s = 1.08 m/s$

As the skateboarder moves along the y-axis at a constant speed equal to her initial velocity, we have:

vfy = voy = -4 m/s

8 0

4 years ago