Ipho 2017 ly thuyet 1 olimpic quốc tế

N

m

i

V cr

f i i = 1, , N f0 N

c

v rms

N f i

i = 1, , N f0

v rms m

⟨K⟩ t −γ⟨U⟩ t

γ

i → r p i →i

dΓ/dt

⟨dΓ

Γ

N m g R v rms m g

R g

R g

m s

n

v(r) v(r) r < R g r ≥ R g

m R

r R g v0 n m s

r < R g r ≥ R g

m p

dP/dr m′(r) r n(r)

(r)

(r)

r

T0

n(r) = r(β + r) α 2

r