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Ivahew [28]
3 years ago
5

Which statement best describes what Kendall can do?

Physics
1 answer:
Vesna [10]3 years ago
5 0

Answer: Explanation:

She can measure the volume and mass of the marble, the volume and mass of the water, and the volume and mass of the graduated cylinder. She can measure the volume and mass of the marble, the volume and mass of the water, and the mass of the graduated cylinder.

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If vector A=2i+3j-k and vector B=4i+6j-2k. The angle between them will be: a) 0°b)45°c)90°d)60°​
melomori [17]

Notice that

<em>B</em> = 4<em>i</em> + 6<em>j</em> - 2<em>k</em> = 2 (2<em>i</em> + 3<em>j</em> - <em>k</em>) = 2<em>A</em>

so both vectors point in the same direction and the angle between them is (A) 0°.

7 0
3 years ago
The eyepiece of a light microscope has a magnification level of 10x. If you were looking at a paramecium under the lowest-power
tester [92]

Answer:

The total magnification will be 40x.

Explanation:

As we know if the magnification of the eyepiece of a microscope be m_{e} and that of the objective be m_{o}, then the total magnification is given by

m = m_{e} \times m_{o}

Given, m_{e} = 10x and m_{o}  = 4x

Therefore total magnification is m = 10 \times 4 = 40x

4 0
3 years ago
Neon signs require 12 kv for their operation. to operate from a 244 v line, what must be the ratio of secondary to primary turns
jek_recluse [69]
The answer would be 49. Check the attach file for solution.

3 0
4 years ago
Which statement best describes the relationship between forces?
kogti [31]
I believe the answer would be A. because a magnet has both a south and a north pole, and electrical charges are formed by positive and negative forces. Hope I helped!
7 0
3 years ago
Read 2 more answers
A ball was rolling downhill at 2 m/s. After 5s, it was rolling at 90 m/s. What is its acceleration?
olga55 [171]

Answer:

17.6 m/s²

Explanation:

Given:

v_{f} = 90 m/s (final velocity)

v_{i} = 2 m/s (initial velocity)

Δt = 5s (change in time)

The formula for acceleration is:

a_{avg} = Δv / Δt

We can find Δv by doing

Δv = v_{f} - v_{i}

Replace the values

Δv = 90m/s - 2m/s

Δv= 88m/s

Using the equation from earlier, we can find the acceleration by dividing the average velocity by time.

a_{avg} = Δv / Δt

a_{avg} = \frac{88m/s}{5/s}

acceleration = 17.6 m/s^{2}

4 0
3 years ago
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