2.166. R = 2a/pgh = 0.6 mm.
2.167. x = //(1
pod/4a) = 1.4 cm.
2.168. a = [pgh
poll(1 — h)] d/4 cos 0.
2.169. h = 4a/pg (d2 — d1) = 6 cm.
2.170. h = 2a cos 0/pgx&p.
2.171. V1 = 1/4ld2
20 - 4«.
n4
(n
1
— 1)/pd
0.9 ems/s.
2.172. R2
R 1 %.t' .• 1/8pgh 2/ct = 0.20 mm.
2.173. m
2nR2ccl cos 0 l(n2 — 1)Igh = 0.7 kg.
2.174. F
2am/ph2 = 1.0 N.
2.175. F = 2nR2alh = 0.6 kN.
2.176. F = 2a21/pgd2 = 13 N.
2.177. t = 21T1R4/ar4.
2.178. Q = 2na2lpg.
2.179. (a) F = nad2 = 3µJ; (b) F = 2nad2 = 10 P.
2.180. AF = 2nad2 (2-h/3 — 1) = —1.5 la.
2.181. A' = F pV In (plp,), where F = 8nR2a, p =
4aIR, V = 413nR3.
2.182. C — Cp = 1/2R/(1
2/2por/a).
2.184. (a) AS = —2 (da/dT) Au; (b) A U = 2 (a — T daldT) X
X Aa.
2.185. A = AmRTIM = 1.2 J.
2.186. m, = (V — inVi)/(V; — VD = 20 g, V, = 1.0 1. Here
17; is the specific volume of water.
2.187. m1 z Mpo (V, — V)IRT = 2.0 g, where Po is the standard atmospheric pressure.
2.188.
(n — 1)I(N — 1); = 1/(N
1).
2.189. AS = mq/T = 6.0 kJ/K; AU = m(q — RT/M) = 2.1 MJ,
where T = 373 K.
2.190. h x
(Q —mcAT) = 20 cm, where c is the specific
poS(1+ qM RT)
heat capacity of water, AT = 100 K, q is the specific heat of vaporization of water, T is its boiling temperature.
2.191. A = me (T — T o) RTIqM = 25 1, where c is the specific
heat capacity of water, T is the initial vapour temperature equal to
the water boiling temperature, as is seen from the hypothesis, q is
the specific heat of vapour condensation.
2.192. d 4aMITOT = 0.2 am, where p is the density of
water.
2.193. a = 71poYM/25TRT = 0.35 g/(s•cm2), where pc, is the
standard atmospheric pressure.
2.194. p = pr2nRTIM = 0.9 nPa.
2.195. Ap = a/V2M = 1.7.104 atm.
2.196. pi
pq. About 2.104 atm.
2.198. a = 27 /64R2T2r/Per = 3.6 atm•12/mo12, b=118RT„Ip„.
= 0.043 1/mol.
2.199. T7;,. = 3181:1TcrIMper = 4.7 cm3/g.
2.200. (n
3/v2) (3v — 1) = 8T, T = 1.5.
2.167. x = //(1
pod/4a) = 1.4 cm.
2.168. a = [pgh
poll(1 — h)] d/4 cos 0.
2.169. h = 4a/pg (d2 — d1) = 6 cm.
2.170. h = 2a cos 0/pgx&p.
2.171. V1 = 1/4ld2
20 - 4«.
n4
(n
1
— 1)/pd
0.9 ems/s.
2.172. R2
R 1 %.t' .• 1/8pgh 2/ct = 0.20 mm.
2.173. m
2nR2ccl cos 0 l(n2 — 1)Igh = 0.7 kg.
2.174. F
2am/ph2 = 1.0 N.
2.175. F = 2nR2alh = 0.6 kN.
2.176. F = 2a21/pgd2 = 13 N.
2.177. t = 21T1R4/ar4.
2.178. Q = 2na2lpg.
2.179. (a) F = nad2 = 3µJ; (b) F = 2nad2 = 10 P.
2.180. AF = 2nad2 (2-h/3 — 1) = —1.5 la.
2.181. A' = F pV In (plp,), where F = 8nR2a, p =
4aIR, V = 413nR3.
2.182. C — Cp = 1/2R/(1
2/2por/a).
2.184. (a) AS = —2 (da/dT) Au; (b) A U = 2 (a — T daldT) X
X Aa.
2.185. A = AmRTIM = 1.2 J.
2.186. m, = (V — inVi)/(V; — VD = 20 g, V, = 1.0 1. Here
17; is the specific volume of water.
2.187. m1 z Mpo (V, — V)IRT = 2.0 g, where Po is the standard atmospheric pressure.
2.188.
(n — 1)I(N — 1); = 1/(N
1).
2.189. AS = mq/T = 6.0 kJ/K; AU = m(q — RT/M) = 2.1 MJ,
where T = 373 K.
2.190. h x
(Q —mcAT) = 20 cm, where c is the specific
poS(1+ qM RT)
heat capacity of water, AT = 100 K, q is the specific heat of vaporization of water, T is its boiling temperature.
2.191. A = me (T — T o) RTIqM = 25 1, where c is the specific
heat capacity of water, T is the initial vapour temperature equal to
the water boiling temperature, as is seen from the hypothesis, q is
the specific heat of vapour condensation.
2.192. d 4aMITOT = 0.2 am, where p is the density of
water.
2.193. a = 71poYM/25TRT = 0.35 g/(s•cm2), where pc, is the
standard atmospheric pressure.
2.194. p = pr2nRTIM = 0.9 nPa.
2.195. Ap = a/V2M = 1.7.104 atm.
2.196. pi
pq. About 2.104 atm.
2.198. a = 27 /64R2T2r/Per = 3.6 atm•12/mo12, b=118RT„Ip„.
= 0.043 1/mol.
2.199. T7;,. = 3181:1TcrIMper = 4.7 cm3/g.
2.200. (n
3/v2) (3v — 1) = 8T, T = 1.5.