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likoan [24]
3 years ago
14

Diffusion in physics​

Physics
1 answer:
fgiga [73]3 years ago
5 0

Answer:

sorry but which class your talking 'bout

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A racecar driver has to hold on tightly when going around a banked curve. Approximately what is the centripetal force on a 2220.
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A bicycile traves with an average velocty 15km/h north for 20min what is his displasment​
Mila [183]

Answer:

5000 m equivalent to 5 Km

Explanation:

Average velocity =\frac{Displacement}{Time}

so, Displacement =Average velocity × time

We should convert Km/h to m/s so Km/h ⇒ \frac{1000}{60*60} m/s, also convert time to second so, 20min ⇒(20* 60)seconds

Displacement = (15 ×\frac{1000}{60*60}) × (20×60) =5000m OR 5Km

6 0
2 years ago
Two moles of helium are initially at a temperature of 21.0 ∘Cand occupy a volume of 3.30×10−2 m3 . The helium first expands at c
Anettt [7]

Answer:

(B) The total internal energy of the helium is 4888.6 Joules

(C) The total work done by the helium is 2959.25 Joules

(D) The final volume of the helium is 0.066 cubic meter

Explanation:

(B) ∆U = P(V2 - V1)

From ideal gas equation, PV = nRT

T1 = 21°C = 294K, V1 = 0.033m^3, n = 2moles, V2 = 2× 0.033=0.066m^3

P = nRT ÷ V = (2×8.314×294) ÷ 0.033 = 148140.4 Pascal

∆U = 148140.4(0.066 - 0.033) = 4888.6 Joules

(C) P2 = P1(V1÷V2)^1.4 =148140.4(0.033÷0.066)^1.4= 148140.4×0.379=56134.7 Pascal

Assuming a closed system

(C) Wc = (P1V1 - P2V2) ÷ 0.4 = (148140.4×0.033 - 56134.7×0.066) ÷ 0.4 = (4888.6 - 3704.9) ÷ 0.4 = 1183.7 ÷ 0.4 = 2959.25 Joules

(C) Final volume = 2×initial volume = 2×0.033= 0.066 cubic meter

6 0
3 years ago
How does mechanical energy relate to the work an object can do
kifflom [539]
I am 11 year old and u just needed to login in so I can't answer ur questions
6 0
3 years ago
The proper order of the cycle of addiction is​
Viktor [21]

Answer:

The answer would be drug use, addiction, dependence, tolerance, and withdrawal.

4 0
3 years ago
Read 2 more answers
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