Motion in a Plane — Physics STD 11 Science — Question

Why does a pendulum clock not work in an artificial earth satellite?

NaCl molecule is bound due to the electric force between the sodium and the chlorine ions when one electron. of sodium is transferred to chlorine. Taking the separation between the ions to be 2.75 × 10cm, find the force of attraction between them· State the assumptions (if any) that you have made.

Usually a good conductor of heat is a good conductor of electricity also. Give reason.

The plates of a parallel-plate capacitor are given equal positive charges. What will be the potential difference between the plates? What will be the charges on the facing surfaces and on the outer surfaces?

What is the condition for there to be a difference in the lengths of a brass rod and an iron rod at all temperatures?

A graph was plotted taking gravitational force (F) along y-axis and the square of the distance (d²) along x-axis, what is the nature of graph?

A mass of 2kg is attached to the spring of spring constant 50Nm^–1 . The block is pulled to a distance of 5cm from its equilibrium position at x = 0 on a horizontal frictionless surface from rest at t = 0. Write the expression for its displacement at anytime t.

A monkey climbs up a slippery pole for 3 seconds and subsequently slips for 3 seconds. Its velocity at time t is given by v(t) = 2t(3 - t); 0 < t < 3 and v(t) = -(t - 3)(6 - t) for 3 < t < 6s in m/s. It repeats this cycle till it reaches the height of 20m.
At what time is its acceleration maximum in magnitude?

Find the area of the circle of radius 3.458cm upto correct significant figures.

Explain why :
The climate of a harbour town is more temperate than that of a town in a desert at the same latitude.