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Weight of liquid displaced = Upthrust
= (0.040 - 0.024)N
= 0.016N = ^0.016/₁₀ = 1.6 X 10^-3kg
Volume of the object = Volume of liquid displaced
=

 

Mass of liquid	= 1.6 x 10-1kg
density of liquid	800kgm-2

= 2.0 x 10⁶m³ (A)

Share Answer Ft = mv - mu
Ft = m (v-u)
100 x 10 = 5(v-0)
1000 = 5v
V = 200m/s
V = u at
200 = 0 mass
a = 20m/s2 (C)

Share Answer Impulse, Ft = m(v-u)

(D)

Share Answer Power, P = = FV

V = velocity
Power P = FV = (200N (20m/s)
= 4000W (C)

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The second law of motion states that a body which is subjected to a net external force (F) acquires acceleration which is directly proportional to the force and inversely proportional to the mass of the body i.e. F = ma
(C)

Share Answer Specific latent heat of fusion (C)

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Since I calorie = 4.184J
12,000 calorie = (4.184 x 12,000)J = 50.208J
heat supplied = Work done
() + U (internal energy)
50,208 = 7500J + 5
5 = (50.208 7500)J
= 42708J (B)

Share Answer Convection is the transfer of heat from a hotter region of a Fluid to a colder region through the actual motion of the fluid (A)

Share Answer Heat required to change the phase of
mass, in of the substance is Q = rnLf
= 20kg x 336Kg^-1
= 6.72 x 10³J
= 6.72kJ (D)

Share Answer Specific heat capacity = m x c x
= (0)(20)(20)
Required, H = mc
20 = 10 x c x 20K
(A)