W = F.d
= 3 . 12
= 36 ..........................
Answer:
The speed of these waves is 222.22 m/s
Explanation:
A.
Since, we know that the speed of a wave is given by the formula:
v = fλ
where,
v = speed of wave
f = frequency of wave
λ = wavelength
Here,
λ = distance between consecutive wave crests
λ = 800 km = 8 x 10⁵ m
f = 1/Time Period = (1/1 hr)(1 hr/3600 s)
f = 2.77 x 10⁻⁴ s⁻¹
Therefore,
v = (2.77 x 10⁻⁴ s⁻¹)(8 x 10⁵ m)
<u>v = 222.22 m/s</u>
The particles vibrate against each other in a soild state........i think
Explanation:
Efficiency is often measured as the ratio of useful output to total input, which can be expressed with the mathematical formula r=P/C, where P is the amount of useful output ("product") produced per the amount C ("cost") of resources consumed.
<em>i dont know what the answer really is but this is what i think</em>
Answer:
Explanation:
the putty (W = 2.3lb) strikes the block with velocity ( here h = 8.7ft):
V =
conservation of linear momentum gives (where W = 22lb):
since k = 4lb/in and there are two springs, the initial spring deflection is
δ = = 2.75in
conservation of energy gives (datum is the initial position of the block and we divide with 12 to get deflection in inches):
ΔT + ΔV + ΔV = 0