atmospheric pressure acts on the surface of the lake
pressure increases with depth
density remains constant with pressure
the bubble experiences an upthrust
Correct answer is B
No explanation has been provided for this answer.
8000N
4000N
2000N
31N
Correct answer is A
Pressure on piston = pressure on the plunger
\(\frac{500}{\pi\ \times\ 0.2 \times\ 0.2}\) = \(\frac{F}{\pi\ \times\ 0.8 \times\ 0.8}\)
F = 8000N
The energy contained in a wire when it extended by 0.02m by a force 500 N is
5J
10J
103J
104
Correct answer is A
Energy = \(\frac{1}{2}\)Fe
= \(\frac{1}{2}\) x 500 x 0.02
E = 5J
i, iii only
i, iv only
ii, iii only
iii, iv only
Correct answer is D
No explanation has been provided for this answer.
\(\frac{mv^2}{t}\)
\(\frac{mv^2}{2t}\)
\(\frac{mv}{t}\)
\(\frac{mv}{2t}\)
Correct answer is A
No explanation has been provided for this answer.