Answer:
Explanation:
Given
When we drop an object from height , suppose h
it takes time T
using equation of motion
where
here because it dropped from a certain height
When height is increases to three times of original height
i.e.
then time period becomes
Answer:
B.
340meters per second x 2 seconds = 680 meters away
divided by 2coming back = 340
Hope this helps
Explanation:
Answer:
z = 0.8 (approx)
Explanation:
given,
Amplitude of 1 GHz incident wave in air = 20 V/m
Water has,
μr = 1
at 1 GHz, r = 80 and σ = 1 S/m.
depth of water when amplitude is down to 1 μV/m
Intrinsic impedance of air = 120 π Ω
Intrinsic impedance of water =
Using equation to solve the problem
E(z) is the amplitude under water at z depth
E_o is the amplitude of wave on the surface of water
z is the depth under water
now ,
taking ln both side
21.07 x z = 16.81
z = 0.797
z = 0.8 (approx)
Answer:
If you are coming from study island the real answer is "decrease the rate of heat flow to the outside air."
Explanation:
I just answered it.
Answer:
a). <u>Silver</u><u>,</u><u> </u><u>Ag</u>
b). <u>Iron</u><u>,</u><u> </u><u>Fe</u>
c). <u>Copper</u><u>,</u><u> </u><u>Cu</u>
d). <u>Aluminium</u><u>,</u><u> </u><u>Al</u>
e). <u>Gold</u><u>,</u><u> </u><u>Au</u>