(+105) + (+80) = 185 units.
The resultant amplitude of the wave is 185 units.
the purpose of fuses and circuit breakers is (first answer)
The best and most correct answer among the choices provided by your question is the first choice.
<span>The movement of the large box shows more work because the box moved a longer distance.</span>
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Answer:
The speed of the wave on the longer wire is 580m/s
Explanation:
The velocity possessed by a stretched string is directly proportional to the tension in the string and inversely proportional to the mass per unit length of the string. Mathematically,
V = √T/m
Where V is the velocity of wave in the wire
T is the tension in the wire
M is the mass per unit length of the wire
Let m1 and m2 be the mass per unit length of the wires
Let T1 and T2 be their respective tensions
Since the tension and mass of the wire is the same
m1= m2= m.
T1=T2=T
Let m1 =M/l
m2 =M/4l( since the second is tour times as far apart)
V1 = 290m/s(velocity in shorter wire)
V2 is the velocity of the longer wire.
V1 = √T/(m/l)
290 = √Tl/m
290² = Tl/m... 1
V2 = √4Tl/m
V2²= 4Tl/m... 2
Dividing equation 1 by 2 we have;
290²/V2² = {Tl/m}/{4Tl/m}
290²/V2² = Tl/m × m/4Tl
290²/V2² = 1/4
Cross multiplying we have;
V2² = 290²×4
V2 = √290²×4
V2 = 290×2
V2 = 580m/s
Answer:
712.5 J/g
5130000 J
618.421052632 cm³
Explanation:
= Specific heat = 0.46 J/g°C
= Change in temperature = (1300-25)°C
= Heat of fusion = 126 J/g
= Density =
Unit energy for melting and pouring is given by
The unit energy for melting and pouring is 712.5 J/g
Total energy is given by
The total energy of the process is 5130000 J
Volume is given by
The volume of the casting is 618.421052632 cm³