Một vật dao ddngj điều hòa với biên đô 5cm li độ -3cm, vận tốc 16pi lập phương trình dao động của vật mốc thời gian ở biên âm

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? your