If we increase the speed of rotation of wheel then the sound produced by cardboard touching the spokes of the wheel will become
a) shrill (b) grave (c) remains the same

Aforce of 34n stretches a very light ideal spring 0.73 m from equilibrium, what is the force constant (spring constant) of the spring? (a) 47n/m (b) 38n/m (c) 53n/m (d) 25n/m

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

If frequency goes up, what happens to wavelength? does it get shorter or longer?