the thick tumbler is less likely to crack because it is stronger
the thick tumbler is less likely to crack because it insulates the heat better, glass being a poor conductor of heat
Both tumblers are equally likely to crack because they are made of the same kind of glass
the thick tumbler is more likely to crack because uneven expansion persists for a longer time within the thicker glass
the thick tumbler is more likely to crack because it is heavier
Correct answer is D
Usually, when pour water into a glass, the more thick glass is easier to break. Because the glass tumbler is cold, when hot water is poured, and the inner wall expands rapidly due to thermal expansion and contraction.
i, ii, iii and iv only
iv and v only
i, ii and iii only
i, ii and v only
all
Correct answer is C
No explanation has been provided for this answer.
0.00004g/C
0.00002g/C
0.02500g/C
0.05000g/C
0.00001g/C
Correct answer is A
M = Itz
5.01 - 5.00 = 50 x 5 x z
z = 0.00004g/C
\(\frac{6^2}{40^2}\)ohms
\(\frac{40}{6^2}\)ohms
\(\frac{40}{6}\)ohms
6 x 40 ohms
\(\frac{6^2}{40}\)ohms
Correct answer is E
Power \(\frac{V^2}{R}\)
40 = \(\frac{6 \times 6}{r}\)
R = \(\frac{36}{40}\)\(\Omega\)
Which of the following is the correct definition of 'half-life'?
the average life-time of a radioactive material
the time it takes a radioactive material to decay to half of its original quantity
half the period a radioactive material decays completely
half of the decay constant
the decay constant times life-time
Correct answer is B
No explanation has been provided for this answer.