Which method of testing substances is a sure way to identify a chemical reaction?
a. change i...
Physics, 22.11.2019 10:31 yannabby26
Which method of testing substances is a sure way to identify a chemical reaction?
a. change in color
b. formation of bubbles
c. change in density
d. increase in temperature
e. solubility in water
Answers: 3
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The heliocentric and the geocentric models of the solar system included these central principles
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Which composition of water moves to begin a deepwater current?
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Physics, 22.06.2019 19:30
Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.
Answers: 2
Physics, 22.06.2019 22:30
Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.
Answers: 1
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