1) It allows for international cooperation. This means that for example, you can understand and work with other people's results, you can cooperate with other people in production of goods (if you produce one part of something and they produce another) and you can repeat their experiments to see if their results were sound
2) It reduces errors caused by not rigorous measurement: a common measurement supports more exact specification of the measuring units, since many people work towards specifying it exactly.
Answer:
The ratio of momentum is 1:2 since the velocity is constant and mass is of ratio 1:2
Explanation:
Given
mass of car = 500 kg
mass of truck = 1000 kg
velocity of car = velocity of truck = v = 5 m/s
momentum of car = ?
momentum of truck = ?
We know that the momentum is given by: p = mv , where m is mass and v is velocity.
momentum of car = x v = 500 x 5 = 2500 kg.m/s
momentum of truck = x v = 1000 x 5 = 5000 kg.m/s
The ratio of momentum =
=
= = 1:2
Here we infer that the ratio is 1:2. This is because momentum value depends on mass and velocity of body. In given problem velocity is constant. Hence depends only on mass. The ratio of mass is 1:2 and so the ratio of momentum.
Answer:
13.8m/s
Explanation:
Speed = Distance/Time
Since the object moved 138m over 10s we just substitute it in.
Speed = 138/10s
Speed = 13.8m/s on Average
The maximum transverse force on a 1.00cm segment of the string is 0.045N.
The maximum transverse force on the segment,
l=1.00cm=1.00cm×1m/100cm=0.01m is,
F=μla
=(12.0×10^−3kg/m)×(0.01m)×(375m/s^2)
=0.045N
Hence the maximum force is 0.045N
Learn more about transverse force here:
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Answer:
( 24.19 / 10.06 )
Explanation:
starting speed = 20m/s
direction = 41 degrees from due east
after 20 seconds
bus speed = 45m/s
direction = 56 degrees from due east
calculate the angle of the vector that represents the change in the velocity of the bus
change in velocity : ΔV = Vf - Vi
Vf = Vf ( cos βi + sinβj )
= 45m/s ( cos 56 i + sin56 j )
= 25.16 i + 37.31 j
Vi = Vi ( cos ∝ i + sin ∝ j )
= 20 m/s ( cos 41 i + sin 41 i )
= 15.10 i + 13.12j
Hence the change in velocity ΔV ( Vf - Vi )
= 10.06 i + 24.19 j
the angle in degrees ( ∅ ) = ( 24.19 / 10.06 )