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AleksAgata [21]
3 years ago
6

John dragged a wooden block across a table with 4 different surfaces and the results

Physics
1 answer:
AnnyKZ [126]3 years ago
4 0

If the surface is rough then the average force needed to move the wooden block will be more as the friction between the surfaces will be more.

Hence, the least force will be required on the smoothest surface and the greatest force will be required for the roughest surface.

a) Hence, the order will be: B > D > A > C

b) When the surface is glued then the force of friction will increase. Hence, it will require more force to move the wooden block on the surface. Hence, the more required will be more than 105 N.

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A) Draw a pie chart that represents the two types of lung cancer. Show your working.
Sphinxa [80]

Answer:

<em>Please, check the image provided</em>

Explanation:

<u>Pie Charts</u>

They are graphic representations of quantitative results from experimental or theoretical experiences. Instead of showing a table, it's usually preferred to show a graph where the viewer can easily understand the relative relations between the parameters under study.

The chart pie is a circular shape divided into sectors whose areas are proportional to the proportions between each parameter and the total. Since the whole sector of a circle has 360°, each sector will be a proportion or ratio of that angle.

The outcome shown in the table gives us these statistics:

Small Cell Carcinoma : 15%

Non-Small Cell Carcinoma : 85%

Each category has the following angles in the chart pie

Small Cell Carcinoma : 15%*360°=54°

Non-Small Cell Carcinoma : 85%*360°=306°

The first category is shown in blue and the second in green. Please check the image below.

4 0
3 years ago
A thin, horizontal square copper plate has a length of 6.35cm and is charged with 2.56 × 108 electrons. If the electrons are uni
Strike441 [17]
This is either a trick question or a very hard one. In the first case: An electric field cannot occur inside a conductor (or by using the superposition principle you find out that at this point your electric fields cancel each other out)... Or you must use the laplace equation and proper boundary conditions to solve for the electrostatic potential 

<span>Edit: Considering the center of mass of the plate is on the plate</span>
5 0
4 years ago
One advantage of light microscopy over transmission electron microscopy is that One advantage of light microscopy over transmiss
il63 [147K]

Answer:

d. light microscopy allows one to view dynamic processes in living cells.

Explanation:

One advantage of light microscopy over transmission electron microscopy is that light microscopy allows one to view dynamic processes in living cells.

Electron microscope differ from the light microscope because electron micoscope produce the image of the specimen using electron beam and not light.  Electron microscopy samples must be kept in vacuum, this means live cells can not be imaged.

4 0
4 years ago
There are 3600 in a full circle. a. How many arcminutes are in a full cycle? b. How many arcseconds are in a full cycle?
liberstina [14]

Answer:

21600

1296000

Explanation:

Full cycle consists of

360^\{circ}

1 hour = 3600 seconds

1 minute = 60 seconds

Converting to arcminutes

360\times 60=21600\ arcseconds

The arcminutes in a full cycle is 21600

Converting to arcseconds

360\times 60\times 60=1296000\ arcseconds

The arseconds in full cycle is 1296000

4 0
3 years ago
When the atmosphere is not quite clear, one may sometimes see colored circles concentric with the Sun or the Moon. These are gen
stealth61 [152]

Answer:

D) diffraction

Explanation:

Corona is an optical phenomenon produced by the diffraction of sunlight or moonlight, as light moves through water droplets in the atmosphere.

This phenomenon produces one or more diffuse concentric rings of light around the Sun or Moon, usually seen as colored circles.

Therefore, the explanation for these phenomena of colored concentric circles, sometimes seen with the Sun or the Moon involves diffraction.

5 0
3 years ago
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