Which property of a wave remains constant when the wave travels from one medium into another?
Amplitude
Wavelength
Velocity
Frequency
Correct answer is D
Frequency remains unchanged as waves travel from one medium to another because it is characterized by the source of the wave.
run - off election
electoral college
bye - election
primary elections
Correct answer is C
Bye- election; is an election used to fill an office that has become vacant between general elections
A device consumes 100 W of power when connected to a 120 V source. Calculate its resistance
1.2\(\Omega\)
12,000 \(\Omega\)
20.0\(\Omega\)
144\(\Omega\)
Correct answer is D
P = \(\frac{V^2}{R}\)
R = \(\frac{120^2}{100}\)
= 144.0\(\Omega\)
Politics is practically demonstrated during
electioneering campaigns
parliamentary debates
formation of political parties
inter-party consultative meetings
Correct answer is A
Electioneering campaign; refers to the act of campaigning to influence the result of an election in favor of a particular candidate or party.
7.7 x 10\(^{47}\) N
6.0 x 10\(^{-8}\)N
3.0 x 10\(^{-14}\)N
1.3 x 10\(^{-26}\)N
Correct answer is B
Centripetal force (Fr) = \(\frac{MV^2}{r}\)
i.e. Fr = \(\frac{Mv^2}{r}\)
= \(\frac{9.1 \times 10^{-31} \times 2.0 \times 10^6 \times 2.0 \times 10^6}{6.1 \times 10^{-11}}\) N
= (\(\frac{36.4 \times 10^{-19}}{6.1 \times 10^{-11}}\)) N
= 5.967 x 10\(^{-8}\) N
~ 6.0 x 10\(^{-8}\) N