Explanation:
It is given that,
The signal to a speaker causes 0.5 amps of current, 
The signal level is increased to 2.5 amps, 
We need to find the gain to the nearest decibel. The decibel gain formula of the speaker is given by :
db = 13.97 db
or
db = 14 db
So, the gain pf the speaker is 14 db. Hence, this is the required solution.
Answer:
An unconformity shows where some rock layers have been lost because of erosion. To date rock layers, geologists first give a relative age to a layer of rock at one location and then give the same age to matching layers at other locations. Certain fossils, called index fossils, help geologists match rock layers.
Explanation:
Answer:
The answer is 150,000
Explanation:
I got my answer by solving 10^5 which is 100,000 then you just multiply 1.5 to get 150,000
Answer:
73.6 minutes
Explanation:
relative time = time interval / √(1 - observer velocity² / speed of light²)
we have relative time. we want time interval.
rearrange
time interval = relative time x √(1 - observer velocity² / speed of light²)
convert 85 mins into seconds
85 x 60 = 5100
1.5 x 10⁸ as a number is 150000000
for c = 299 792 458
time interval = 5100 x √(1 - 150 000 000² / 299 792 458²)
for c = 3 x 10⁸
time interval = 5100 x √(1 - 150 000 000² / 300 000 000²)
time interval = 5100 x 0.866
time interval = 4415.71
divide by 60 for back into minutes
time = 73.6 minutes
