We know, U = mgh
Substitute the known values,
19.6 = m * 9.8 * 8
m = 19.6 / 78.4
m = 1/4
In short, Your Answer would be 1/4 Kg
Hope this helps!
Answer:
Explanation:
a ) wave length of waves in water
= velocity / frequency
= 1482 / (18 x 1000)
= .0823 m
= 8.23 cm
b ) Applying Doppler's effect relation
frequency of reflected wave
= 18000 [ 1482 / (1482 - 4.95 ) ]
= 18000 x 1.003385
= 18061
Difference in frequency= 61 Hz
Answer: Reduction in skin resistance as a result of increased perspiration leading to conduction.
Explanation:
A lie detector is a machine used to detect when someone is lying.
This is so because when an individual lies, there is an increase in heart beat which causes an increase in sweating. As the the individual sweats there is a reduction in the resistance at skin surface leading to current conduction across the connected cables.
Answer:
first blank is chemical second blank is kinetic energy
