Answer:
Magnitude of displacement = 2.07 km
Magnitude of average velocity = 1.17 kmph
Explanation:
Let east represent positive x axis and north represent positive y axis.
A bird watcher meanders through the woods, walking 1.93 km due east, 1.03 km due south, and 3.84 km in a direction 52.8 ° north of west.
1.93 km due wast
s ₁ = 1.93 i km
1.03 km due south
s₂ = -1.03 j km
3.84 km in a direction 52.8 ° north of west
s₃ = -3.84 cos 52.8 i + 3.84 sin 52.8 j = -2.32 i + 3.06 j km
Total displacement
s = s ₁+ s₂+ s₃ = 1.93 i - 1.03 j -2.32 i + 3.06 j = -0.39 i + 2.03 j
Magnitude of displacement,
Time taken = 1.771 hour
Magnitude of average velocity,
Linear momentum has to be conserved. It was zero before the thread eas burned ... when nothing was moving ... so the momentum of the masses moving in opposite directions has to add up to zero. ... Momentum = mass times speed. ... In one direction, you have 5 kg times 1/5 m/s= 1 kg-m/s. ... We need 1 kg-m/s in the other direction. ... 7 kg times speed = 1 kg-m/s. ... Can you finish it from here ?
Answer:
The power is 29.76 J.
Explanation:
Given that,
Force = 22 N
Radius = 0.28 m
Time = 1.3 s
The force is always applied parallel to the motion of the handle.
So, angle is 0°.
We need to calculate the work done
Using formula of work done
Where, F = force
d = distance
Put the value into the formula
We need to calculate the power
Using formula of power
Hence, The power is 29.76 J.
I think it’s c but check cause I’m not sure
Answer:
A standing wave, also known as a stationary wave, is a wave that has a point called a node and does not move. Stationary waves are formed when two opposing waves that have identical frequencies and are traveling in mediums that are moving in opposite directions combine.