Will a homemade telephone made of two cans and a string work better with a tightly-woven string or a loosely-woven string? a) a tightly woven string because it will not come apart as easily b) a loosely woven string because the sound waves have more room to move c) a tightly woven string because sound waves travel best through dense materials d) a loosely woven string because sound waves travel best through less dense materials

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?