1. A 9.4×1021 kg moon orbits a distant planet in a circular orbit of radius 1.5×108 m. It experiences a 1.1×1019 N gravitational pull from the planet. What is the moon’s orbital period in earth days?

The orbital period of the moon in Earth days is 26 days.

The given parameters;

The centripetal force experienced by the planet is given as;

The orbital period of the moon in Earth days is calculated as follows;

Thus, the orbital period of the moon in Earth days is 26 days.

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in physics zero. in muscle fatigue could be high

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards