PLEASE HELP. I WILL MARK BRAINIEST Mrs. Kucalaba uses a spoon to tap a glass of water three times. All three taps created sound waves. The first tap could not be heard. The second tap could be heard faintly. The third tap could be heard loudly. How did the sound waves produced by the three taps differ?

A. they differ by the amount of energy carried by each wave

B. They differ by the type of sound waved produced

C. They differ by the speed of sound waves produced

D. They differ by the form of energy produced by each tap

Aparticle of mass m is projected with an initial velocity v0 in a direction making an angle α with the horizontal level ground as shown in the figure. the motion of the particle occurs under a uniform gravitational field g pointing downward. (a) write down the lagrangian of the system by using the cartesian coordinates (x, y). (b) is there any cyclic coordinate(s). if so, interpret it (them) physically. (c) find the euler-lagrange equations. find at least one constant of motion. (d) solve the differential equation in part (c) and obtain x and y coordinates of the projectile as a function of time. (e) construct the hamiltonian of the system, h, and write down the hamilton’s equations (canonical equations) of motion.

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1

Arrange the images in order to show how lake-effect snow occurs.