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Questions in physics

[Jawaban] Dehumidification makes people feel cooler because it A. speeds up the process of evaporation on the skin. B. reduces the air temperature through evaporation in the dehumidifier. C. slows down the process of evaporation on the skin. D. improves the efficiency of air-cooled condensers.

[Jawaban] The magnitude of the force on the electron placed in a uniform magnetic field is

[Jawaban] The electric field strength between the plates of a simple air capacitor is equal to the voltage across the plates divided by the distance between them. When a voltage of 61.1 V is put across the plates of such a capacitor an electric field strength of [tex]$3.3 \frac{ kV }{ cm }[/tex] is measured. Write an equation that will let you calculate the distance [tex]$d$[/tex] between the plates. Your equation should contain only symbols. Be sure you define each symbol.

[Jawaban] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Jawaban] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Jawaban] A(n) _____ is one in which some built-in asymmetry draws the excited electrons away and delivers them to an external circuit before they can relax. a. electromagnetic device b. nuclear power plant c. photovoltaic device d. conventional power plant

[Jawaban] What is the mass of a crate if a net force of 12 N gives the crate an acceleration of [tex]$0.20 m / s ^2$[/tex]? A. 2.4 kg B. 6 kg C. 12.2 kg D. 60 kg

[Jawaban] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Jawaban] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Jawaban] A car breaks from 360 km/h to a full stop in 10 s, what is its acceleration? A. -10 m/s^2 B. -1 m/s C. 1 m/s^2 D. 10 m/s^2