Answer:
Explanation:
Answer:
Explanation:
Given that,
System of two particle
Ball A has mass
Ma = m
Ball A is moving to the right (positive x axis) with velocity of
Va = 2v •i
Ball B has a mass
Mb = 3m
Ball B is moving to left (negative x axis) with a velocity of
Vb = -v •i
Velocity of centre of mass Vcm?
Velocity of centre of mass can be calculated using
Vcm = 1/M ΣMi•Vi
Where M is sum of mass
M = M1 + M2 + M3 +...
Therefore,
Vcm=[1/(Ma + Mb)] × (Ma•Va +Mb•Vb
Rearranging for better understanding
Vcm = (Ma•Va + Mb•Vb) / ( Ma + Mb)
Vcm = (m•2v + 3m•-v) / (m + 3m)
Vcm = (2mv — 3mv) / 4m
Vcm = —mv / 4m
Vcm = —v / 4
Vcm = —¼V •i
I would say radio waves infared rays and xray
Answer:
Explanation:
Particles of a solid are closely packed, and when a solid is hit to produce a sound the kinetic energy present in the solid will cause the particles to vibrate vigorously in the intermolecular spaces in the solid, whereas the paticles of liquids and gases are rather further apart therefore having large intermolecular spaces between particles.
An additional 10ppm of methane will change the upward IR heat flux (in tropical
atmosphere) from 289.29 W/m2
to 286.211 W/m2
, which is a reduction of 3.08
W/m2
.
An additional 10ppm of CO2 will change the upward IR heat flux from 289.29 W/m2
to 289.29 W/m2
, which is a change of 0.13 W/m2
.
Therefore, an additional 10 ppm of methane would have a much larger impact on
the outgoing infrared flux than an additional 10 ppm of CO2 at current
concentrations
