10. The following are the statements regarding the human ear
i. P- Outer ear detects sound from the surroundings
ii. Q – Ear drum converts sound into a sensory impulse
iii. R - Inner ear receives vibrations from the ear drum
and sends it to the brain
iv. S - Damaged ear drum can impair hearing
Which of the following are true regarding human ear?
a. Only P and Q
b. Only P, Q and S
c) Only P, R and S
d) All P, Q, R and S​

In what direction does an applied force move an object

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates