Top answers

Find the wavelength of a radio wave if the frequency is 11 x 10 ^6 Hz and the speed of radio waves in air is 3 x 10 ^8 m/s.

The key equation here is v = fL ( v is wave speed (m/s), f is frequency (Hz), L is wavelength (m)). We need to rearrange it to get L (the wavelength). To do this, we divide by f to get L = v/f. Frequency is ...
EM
Answered by Emma M. • Physics tutor
2790 Views

(FP1) Given k = q + 3i and z = w^2 - 8w* - 18q^2 i, and if w is purely imaginary, show that there is only one possible non-zero value of z

k = q + 3i and z = k 2 - 8k* - 18q 2 i. Plug k into w to give: z = (q + 3i) 2 - 8*(q - 3i) - 18 q 2 i. k means the compliment of k which just means that the sign before the imaginary value is switched to neg...
EM
3284 Views

Explain two possible government responses to the abuse of monopoly power.

Monopoly power refers to the ability of a firm to set prices. Legislation is a form to reduce monopoly power. Most countries have laws that try to promote competition by preventing collusion between oligopol...
JS
Answered by Jasmine S. • Economics tutor
11119 Views

Why and how have liberals supported the fragmentation of government power?

Fragmentation of government power is the internal form of constitutionalism, which is the practice of limited government through the existence of a constitution. It stems from the liberal belief that "p...
IR
7058 Views

Describe the trends in predator and prey populations seen within a community in an ecosystem

Prey population size increases when there are enough resources available for food. When prey populations increase, the predator population size also increases, as this means there is more food available for ...
OC
Answered by Olivia C. • Biology tutor
9009 Views