What happens to capacitors at low frequencies? At very low frequencies, such as 1Hz our 220nF capacitor has a high capacitive reactance value of approx 723.3KΩ (giving the effect of an open circuit). At very high frequencies such as 1Mhz the capacitor has a low capacitive reactance value of just 0.72Ω (giving the effect of […]
What can a firewall not prevent?
What can a firewall not prevent? Users not going through the firewall: A firewall can only restrict connections that go through it. It cannot protect you from people who can go around the firewall, for example, through a dial-up server behind the firewall. It also cannot prevent an internal intruder from hacking an internal system. […]
Did Newton agree with Galileo?
Did Newton agree with Galileo? Galileo determined the laws of gravity and explored the laws of motion on earth. Newton first conclusively affirmed the laws of motion and linked them with Kepler’s laws of planetary motion. Galileo had suggested this, but was censored by the Church before he was able to do further work to […]
Can a tsunami tip over a cruise ship?
Can a tsunami tip over a cruise ship? Experts agree that a cruise ship sailing out over a body of water is not likely to feel any impacts from a tsunami’s waves. Cruise ships closer to land or at port would face an immense threat from the tsunami’s tall, high-energy and potentially devastating wave. Can […]
How do bones muscles and joints work together?
How do bones muscles and joints work together? Muscles can pull bones, but they can’t push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint. Then, when the movement is completed, the flexor relaxes and the extensor contracts to […]
What is the charge on the other plate of the capacitor?
What is the charge on the other plate of the capacitor? Capacitors do not store charge. Capacitors actually store an imbalance of charge. If one plate of a capacitor has 1 coulomb of charge stored on it, the other plate will have −1 coulomb, making the total charge (added up across both plates) zero. How […]
Which ocean has strongest currents?
Which ocean has strongest currents? Antarctic Circumpolar Current What happens if deep ocean currents stop? The ocean currents carry warmth from the tropics up to these places, which would no longer happen. If the currents were to stop completely, the average temperature of Europe would cool 5 to 10 degrees Celsius. There would also be […]
What is the least reactive element?
What is the least reactive element? Noble gases Which of these parts of an atom is the smallest? Electrons are the smallest of the three particles that make up atoms. Electrons are found in shells or orbitals that surround the nucleus of an atom. Protons and neutrons are found in the nucleus. What are the […]
What is the difference between amplitude and frequency modulation?
What is the difference between amplitude and frequency modulation? The main difference between both modulations is that in frequency modulation, the frequency of the carrier wave is modified as per the transmit data, while in amplitude modulation, the carrier wave is modified according to the data. What is the frequency of AM? The frequency band […]