1) which of the following statements about physical models is not true?
a. physical models ar...
Physics, 22.12.2019 15:31, peyton2730
1) which of the following statements about physical models is not true?
a. physical models are often three-dimensional representations.
b. physical models are used to represent an object or event.
c. physical models are usually in the form of a graph.
d. physical models can be used to depict microscopic objects.
2) which of the following scenarios represents the best use of a scientific model?
a. predicting weather patterns
b. studying the result of mixing two chemicals
c. studying the effect of oil spills on plant growth
d. studying the speed of a ball down an inclined plane
Answers: 3
Physics, 22.06.2019 14:30, willoughbysierra
The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.
Answers: 1
Physics, 22.06.2019 23:30, sksksjs
1. explain how you calculate the net force in any direction on the box. 2. suppose an upward force of 15n is added to the box. what will be the net vertical force on the box? 3. what force could be applied to the box to make the net force in the horizontal direction zero? explain. 4. suppose a force of 25n to the right is added to the box. what will be the net force to the right?
Answers: 3
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What is the difference between mass density and weight density?
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Physics, 23.06.2019 00:30, asher456581
Diego kicks a soccer ball from the end line. his fellow students time and mark the soccer ball as it moves down the field. the graph represents the ball's progress. based on the graph, during what time is the velocity constant and positive?
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