Answer:
Decay's theory explains that memory, by the mere passage of time, fades. As time passes the information is less available for later retrieval. So that the information is not lost over time it is necessary to rehearse it.
Frequency, , is defined as the rate of rotation, or the number of rotations in some unit of time. Angular frequency, , is the rotation rate measured in radians. These three quantities are related by f = 1 T = ω 2 π .
Answer:
Explanation:
frequency of tuning fork = 440 Hz
wave length λ = velocity of sound / frequency
= 343 / 440 m
= .7795 m
= 77.95 cm
λ = 77.95 cm
Let length of rod having fundamental wavelength of 77.95 cm be L
L = λ /2
L = 77.95 / 2
= 38.975 cm .
length of rod = 38.975 cm .
= 0. 39 m
Protista, fungi, plantae and animalia