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Reil [10]
3 years ago
12

A wave of frequency 1khz has wave length of 100 cm.how longwill it take to move through a distance of 2 km

Physics
1 answer:
LiRa [457]3 years ago
7 0

f= 2000hz

w.l. = .35m

speed = f × w.l.

700m/s

now dist. = 1500 m

time= d/sp.

1500/700

15/7s

2.142sec.

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sp2606 [1]

Answer:

6J

Explanation:

Given parameters:

Mass of fish  = 1kg

Velocity  = 12m/s

Unknown:

Change in kinetic energy = ?

Solution:

Kinetic energy is the energy due to the motion of a body. It is mathematically given as:

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Now, insert the parameters and solve;

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4 0
3 years ago
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Answer:

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for a triangle with known base and height it's

4*10 / 2

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7 0
3 years ago
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Rainbow [258]

Answer:

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8 0
3 years ago
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A steel rod is pulled in tension with a stress that is less than the yield strength. The modulus of elasticity may be calculated
pshichka [43]

Answer:

B. Axial stress divided by axial strain

Explanation:

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Plasticity:

When an object crosses the elasticity limit, it enters plasticity where the change due to stress is permanent and the object might even break.

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Our case:

As the stress applied is less than the yield strength, the rod is still in the elasticity state and its modulus can be calculated.

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So, Modulus of Elasticity = Axial Stress/ Axial Strain

6 0
3 years ago
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Shtirlitz [24]

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