Questions from Modern Physics

Q: A fisherman notices that his boat is moving up and down periodically

A fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. It takes 2.5 s for the boat to travel from its highest point to its lowest, a total di...

Q: A simple pendulum is mounted in an elevator. What happens to

A simple pendulum is mounted in an elevator. What happens to the period of the pendulum (does it increase, decrease, or remain the same) if the elevator (a) accelerates upward at 5.0 m/s2 ; (b) moves...

Q: Transverse waves on a string have wave speed 8.00 m

Transverse waves on a string have wave speed 8.00 m/s, amplitude 0.0700 m, and wavelength 0.320 m. The waves travel in the −x-direction, and at t = 0 the x = 0 end of the string has its maximum upward...

Q: A certain transverse wave is described by /

A certain transverse wave is described by Determine the wave’s (a) amplitude; (b) wavelength; (c) frequency; (d) speed of propagation; (e) direction of propagation.

Q: Which of the following wave functions satisfies the wave equation, Eq

Which of the following wave functions satisfies the wave equation, Eq. (15.12)? (a) y(x, t)= A cos (kx + vt); (b) y(x, t)= A sin(kx + vt); (c) y(x, t)= A(cos kx + cos vt). (d) For the wave of part (b)...

Q: A water wave traveling in a straight line on a lake is

A water wave traveling in a straight line on a lake is described by the equation where y is the displacement perpendicular to the undisturbed surface of the lake. (a) How much time does it take for...

Q: A sinusoidal wave is propagating along a stretched string that lies along

A sinusoidal wave is propagating along a stretched string that lies along the x-axis. The displacement of the string as a function of time is graphed in Fig. E15.11 for particles at x = 0 and at x = 0...

Q: (a) Show that Eq. (15.3)

(a) Show that Eq. (15.3) may be written as (b) Use y(x, t) to find an expression for the transverse velocity vy of a particle in the string on which the wave travels. (c) Find the maximum speed of a...

Q: A transverse wave on a string has amplitude 0.300 cm

A transverse wave on a string has amplitude 0.300 cm, wavelength 12.0 cm, and speed 6.00 cm/s. It is represented by y(x, t) as given in Exercise 15.12. (a) At time t = 0, compute y at 1.5-cm intervals...

Q: A wave on a string is described by y1x, t2 =

A wave on a string is described by y1x, t2 = A cos (kx – vt). (a) Graph y, vy, and ay as functions of x for time t = 0. (b) Consider the following points on the string: (i) x = 0; (ii) x = p/4k; (iii)...