0.6cm3
1.2 cm3
1.8 cm3
3.6 cm3
6.0cm3.
Correct answer is C
Δv = 3αvΔθ = 3 x 1.2 x 10-5 x 1000
X(60 – 10) = 1.8cm
The expansion of solids can be considered a disadvantage in the
fire alarm system
thermostat
riveting of steel plates
balance wheel of a watch
fitting of wheels on rims.
Correct answer is D
No explanation has been provided for this answer.
increases for a while and then decreases
decreases for a while and then increases
increases gradually
decreases gradually
remains the same
Correct answer is C
No explanation has been provided for this answer.
How far will a body move in 4 seconds if uniformly accelerated from rest at the rate of 2 ms-2?
32m
24m
16m
1.2m
5m
Correct answer is C
S = vt + 1/2 at2 = 0 + 1/2 x 2 x 42 = 16m
0o
30o
45o
60o
90o
Correct answer is B