How can heat pumps be more than 100 efficient?

How can heat pumps be more than 100 efficient? By contrast, heat pumps seemingly undertake the impossible: you get more heating out than the energy you put in. This is possible because we are using energy to move heat – rather than converting the energy directly to heat. As a result the apparent efficiency in […]

What happens if base-emitter junction is reverse biased?

What happens if base-emitter junction is reverse biased? If you reverse bias the diode, the diode cuts off. Now, the base-emitter junction in a transistor is going to essentially turn the transistor on or off. Now, the base-collector junction will not have that same power, but the base-emitter junction will determine whether the transistor is […]

What are the general types of intermolecular forces?

What are the general types of intermolecular forces? The three major types of intermolecular interactions are dipole–dipole interactions, London dispersion forces (these two are often referred to collectively as van der Waals forces), and hydrogen bonds. What are the properties of matter influenced by intermolecular forces? As the intermolecular attraction increases, • The vapor pressure […]

What is the frequency of a wave?

What is the frequency of a wave? hertz What is the wave velocity if the wave length is 100 cm and the frequency is 2 Hz? Hence, the wave velocity is 2 m/s. Why does frequency not affect wave speed? The data convincingly show that wave frequency does not affect wave speed. An increase in […]

Is ProPilot assist worth it?

Is ProPilot assist worth it? Is ProPilot Assist worth it? The short answer: Yes. While it’s a relatively simple system compared with some on high-end vehicles, it actually does take a lot of the tedium out of highway driving and stop-and-go commutes. A longer answer: It’s definitely worth adding if you already wanted a fully […]

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