Uộn dây thuần cảm. uMP = 170cos100πtV; UC = 265V ; I = 0,5A và sớm pha so với uMP. Điện trở thuần và độ tự cảm có giá trị: A -
170 (Ω) và 1,15H
B -
170 (Ω) và
C -
170 (Ω) và 0,115H
D -
Tất cả đều sai

Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n

The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.

Air conditioners not only cool air, but dry it as well. suppose that a room in a home measures 5.0m×9.0m×2.4m . if the outdoor temperature is 30 ∘c and the vapor pressure of water in the air is 85 % of the vapor pressure of water at this temperature, what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? the vapor pressure for water at 30 ∘c is 31.8 torr.