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SOVA2 [1]
4 years ago
8

Question 19 (Multiple Choice Worth 3 points) A mirror will reflect

Physics
1 answer:
Jobisdone [24]4 years ago
4 0
So far, all we have is a very short true statement. If it's a multiple choice question, then where are they ?
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Which has a greater velocity? A ball rolling down a 3.4m hill in 8.5s or a fish swimming upstream, covering 6.2m in 0.6 minutes?
Scilla [17]
3.4/8.5 = 0.4
6.2/36 = 0.172

The ball is faster (greater velocity)
7 0
3 years ago
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Identify the independent and dependent variables.
IrinaK [193]

Answer:

1) independent: the pencil

dependent :will sharpen

2)dependent: how high will the ball bounce

independent :the ball

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independent:someone

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How do scientists determine the number of neutrons in an isotope of an atom?
ikadub [295]
D.  The atomic mass in amu is basically the number or nuclei since the mass of the electrons is negligible.  For a given atom (element) the number of protons is fixed.  Say the element has 10 protons.  If the atomic weight is 14 atomic mass units (amu), you know that there are 4 neutrons, since both neutrons and protons are 1 amu each and there are 10 protons
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4 years ago
A bug crawls 2.25 m along the base of a wall. Upon reaching a corner, the bugs direction of travel changes from south to west. T
denis-greek [22]

Answer:

The magnitude of the bugs displacement is 3.87 m

Explanation:

An illustrative diagram for the scenario is given in the attachment below.

In the diagram, the bug's displacement is given by x. The diagram shows a right angle triangle with x as the hypotenuse. We can determine x from the Pythagorean theorem which states that " the square of the hypotenuse equals sum of squares of the other two sides". That is

x² = 2.25² + 3.15²

x² = 5.0625 + 9.9225

x² = 14.985

x = √14.985

x = 3.87 m

Hence, the magnitude of the bugs displacement is 3.87 m.

8 0
3 years ago
Suppose a car is moving in a straight line and steadily increases its speed. It moves from 35 km/h to 40 km/h the first second a
snow_lady [41]

Answer:

c

Explanation:

the first 35 to 40 acceleration will be 5 same as 40 to 45 ,

5+5=10

7 0
3 years ago
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