Physics, 25.06.2019 07:30 dontcareanyonemo
1. as shown in the figure, the object moves along the curve from point a to point b. regarding the movement of the object in the ab segment, the following statement is correct ( ) a. the speed of the object may not change b. the speed of the object cannot be uniformly changed c. the speed direction of point a points from a to b d. the displacement of the ab segment must be less than the distance
Answers: 1
Physics, 22.06.2019 11:50
The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?
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Physics, 22.06.2019 15:00
What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?
Answers: 1
1. as shown in the figure, the object moves along the curve from point a to point b. regarding the m...
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