Answer:
(2) −1 e
Explanation:
A quark is the lightest elementary particles which form hadron such as proton and neutron. A quark has fractional charge.
Up, charm and top quarks have
charge where as down, strange and bottom quarks have
charge.
The antiparticle of up quark is antiup quark and has charge
charge.
The antiparticle of down quark is antidown quark and has charge
charge.
An antibaryon is composed of two anti-up quark and one anti-down quark.
Net charge of the anti-baryon is:
Thus, antibaryon has -1e charge.
Answer:
So Tammy must move with speed 4.76 m/s in opposite direction of Jackson
Explanation:
As per law of conservation of momentum we know that there is no external force on it
So here we can say that initial momentum of the system must be equal to the final momentum of the system
now we have

final they both comes to rest so here we can say that final momentum must be zero
now we have


Answer:
time taken is 20 μs
Explanation:
given data
temperature = 20°C = 293 K
radius = 1 cm
atomic mass of air = 29 u
to find out
how long it will take for air to refill
solution
we find here rms velocity of air particle that is

here m is mass and t is temperature and v is speed and R is ideal gas constant i.e. 8.3145 (kg·m²/s²)/K·mol
v =
............................1
v =
v = 501.99 m/s
so now for cover 1 cm
time taken by air
time take = 
time taken = 
time taken = 19.92 ×
s = 20μs
so time taken is 20 μs
The 1st,3rd,4th, and 5th ones are the correct answers