Standing waves of frequency 57 Hz are produced on a string that has mass per unit length 0.0160 kg/m. With what tension must the string be stretched between two supports if adjacent nodes in the standing wave are to be 0.71 meters apart?
What will be an ideal response?
Question 2
The intensity of sunlight falling on the earth is about 1.4 kW/m2 (before any gets absorbed by our atmosphere). At what rate does the sun emit light energy? (The earth-sun distance = 1.5 108 km and the earth's radius = 6.4 103 km.)
A) 4.0 1026 W
B) 3.2 1022 W
C) 7.2 1014 W
D) 7.6 108 W
Question 3
Find the speed of an ocean wave whose vertical displacement y as a function of time t is given by y(x,t) = 3.7 cos(2.2x - 5.6t), where all quantities are in SI units.
A) 2.5 m/s
B) 1.9 m/s
C) 3.5 m/s
D) 4.5 m/s
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
The greatest bone mass is found around age 30 for both men and women, with the later decline being f
Characteristics of Sound: Frequency and Amplitude
Body mass index table.
Record the AC frequency as shown on the meter and subtract 50 from the reading (e.g., 60.50 -50.00 = ...
Gravitational Force Due to a Distribution of Mass Problem 1