Answer:
Wavelength of AM radio wave = 0.125 meter
Explanation:
Given:
Frequency of AM radio wave = 24 Hz
Velocity of AM radio wave = 3 m/s
Find:
Wavelength of AM radio wave
Computation:
Wavelength = Velocity / Frequency
Wavelength of AM radio wave = Velocity of AM radio wave / Frequency of AM radio wave
Wavelength of AM radio wave = 3 / 24
Wavelength of AM radio wave = 0.125 meter
Answer:
50% of it .
Explanation:
50% of it is illuminated by the Sun.
Answer:
A rotating fan completes 1200 revolutions every minute. Consider the tip of a blade, at a radius of 0.15 m.
Explanation:
11.2 = 0.550u + 1/2 * 9.8 * (0.550)^2
u = 17.67 m/s
Answer:
Explanation:
Using the first law of thermodynamics:
Where is the change in the internal energy of the system, in this case , is the heat tranferred, and is the work, with a negative sign since the work is done by the system.
From the previous equation we solve for heat, because it is the unknown variable in this problem
And replacing the known values:
The negative sign shows us that the heat is tranferred from the system into the surroundings.