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
Variation in shape and length of nerve cells.
A functional renal unit.
How to convert one unit of measurement to another unit (Part 1)
A 2.10-kg hammer is transported to the Moon. The radius of the Moon is 1.74 × 106 m, its mass ...
What nuclide is produced when K-43 decays by beta emission?
Gravitational Force Due to a Distribution of Mass problem 2