james wants to lower the pitch coming from an electronic sound generator. how would he achieve that? a. he should increase the a
2 answers:
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Explanation:
It is given that,
Voltage of the battery, V = 12 V
Current, I = 100 ampere-hours
Energy stored is given by the product of power and time taken. So,
P is the power,
P = 1200 watts
This power can be used for 1 hour or 3600 seconds
Energy,
E = 4320000 J
So, the energy stored in this battery is 4320000 J. Hence, this is the required solution.
Answer:
43.41 mm
Explanation:
Given:
thickness of sheet, t = 6 mm
Force exerted by punch, F = 45 KN
Average shearing stress, T = 55 MPa
From average shearing stress T = Force F / Area A
Hence area = force/stress =45000/ 55 =
From area = pi*diameter*thickness
diameter = area/(pi* thickness)
= 818.18/(3.142*6)
= 43.41 mm