Physics, 21.10.2020 01:01 summer5716
For an object to remain at rest, which of the following must be true?
a)The forces on it are balanced.
b)There is not friction
c)Gravity does not act on it
d)The object has no mass.
Answers: 2
Physics, 21.06.2019 19:10
What happens to light waves from a star as the star moves away from earth?
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Physics, 21.06.2019 19:30
Density of salty water as compared to the density of pure water is(a) is less(b) is always equal(c) is always more(d) may be less or more
Answers: 1
Physics, 22.06.2019 23:30
You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?
Answers: 2
For an object to remain at rest, which of the following must be true?
a)The forces on it are balanc...
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