Does the speed increase, decrease or remain constant when a planet comes closer to the sun?

A lift is accelerated upward. Will the apparent weight of a person inside the lift increases, decreases or remains the same relative to its real weight? If the lift is going with uniform speed, then?

Name the characteristics of e.m waves that (i) increases, (ii) remains constant as one moves from radio wave to ultraviolet regions in electromagnetic spectrum

A comet orbits the Sun in a highly elliptical orbit. Does the comet have a constant (a) linear speed, (b) angular speed, (c) angular momentum, (d) kinetic energy, (e) potential energy, (f) total energy throughout its orbit? Neglect any mass loss of the comet when it comes very close to the Sun.

Let the resistance of an electrical component remains constant while the potential difference across the two ends of the component decreases to half of its former value. What change will occur in the current through it?

When a body moves with constant speed along a circle

Work Problem on Geometry The area of a rectangle remains the same if the length is increased by 7m and breadth decreased by 5m . Determine the dimension of the rectangle.

f the radius of a circle increases at a constant rate 1/(2pi) unit per second, then find the rate of increase of its area, when the radius is 1 unit.