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4 years ago

PLEASE HELP WILL GIVE 10 POINTS!!!!

Physics

2 answers:

Musya8 [376]4 years ago

6 0

Answer: Option (C) is the correct answer.

Explanation:

A quantitative data is defined as the data which can only be described in numbers or figures.

For example, density of lead is 11.34 $g/cm^{3}$ .

This is a quantitative data as density is represented in figures.

On the other hand, a data which describes the nature of a substance and that can only be described in words as there will be no figures or numerical data then it is known as a qualitative data.

For example, lead is solid at room temperature.

Thus, we can conclude that solid at room temperature is the property which Alisha placed in the wrong column.

agasfer [191]4 years ago

4 0

C because that isn't measurable that is can't be quantified

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A same-size iron ball and wooden ball are dropped simultaneously from a tower and reach the ground at the same time. The iron ba

Papessa [141]

Answer:

momentum of iron ball is greater than wooden ball

Explanation:

when metal ball (iron ball) and wooden drop are drop from same elevation and reaching the ground after same time. at this position the iron ball has greater momentum than wooden ball

we know that momentum is defined as

P=Mv

and we know also that mass of iron ball is greater than mass of wooden ball and they reached on ground at same time and same distance it mean also velocity will be same for both ball. therefore from above relation we have

Miron*V > Mwood*V i.e.

momentum of iron ball is greater than wooden ball

5 0

4 years ago

Three children are struggling and pulling on a single toy. Two of the children, Abe and Barry, are EACH (individually) pulling w

3241004551 [841]

Solution :

c). $\vec{F}_A =$ force applied by Abe

$\vec{F}_B =$ force applied by Barry

$\vec{F}_E =$ force applied by Eric

$\vec{F}_R =$ Resultant force

$\vec{F}_A$ in the vector form can be written as :

$\vec{F}_A = 0 \hat{i} + 60 \hat{j}$

$\vec{F}_B$ in the vector form can be written as :

$\vec{F}_B = 60 \hat{i} + 0 \hat{j}$

The resultant,

$\vec{F}_R= \vec{F}_A+\vec{F}_B$

$=(0 \hat i + 60 \hat j)+(60 \hat i + 0\hat j)$

$=60 \hat i + 60 \hat j$

$|\vec{F}_R| = \sqrt{60^2+60^2}$

= 84.853 N

d). As the three forces are in equilibrium, therefore,

$|\vec F_E| = |\vec F_R|$

$|\vec F_E| =84.853 \ N$

e). The direction of the force exerted by Eric is exactly opposite to the direction of the resultant force.

The direction of the resultant force is :

$\theta = \tan ^{-1}\left(\frac{F_y}{F_x}\right)$

$= \tan ^{-1}\left(\frac{60}{60}\right)$

= 45° north east

The direction of the force E is 45° west or 45° south west.

8 0

3 years ago

PLEASE HELP WITH THIS QUESTION WILL GIVE BRAINLIST TO BEST ANSWER

lys-0071 [83]

The net force is 12 N to the left.

4 0

3 years ago

Read 2 more answers

What part of an electric circuit are the wires that carry the electric current

bezimeni [28]

Answer:

okay so, An electric circuit is a closed loop through which current can actually flow. All electric circuits must have a voltage source, for example a battery, and a conductor, which is usually a wire.

how does it flow or how does .current flow in a circuit ? When a wire is connected to battery terminals which is electrons, electrons flow from negative to positive. Electrons have a negative charge in case you didnt know. they are repelled from the negative and attracted to the positive.

if this helped please mark this as brainliest!!! :)

8 0

4 years ago

Car A starts out traveling at 35.0 km/h and accelerates at 25.0 km/h2 for 15.0 min. Car B starts out traveling at 45.0 km/h and

lawyer [7]

1 kilometre=1000 metre

1 hour = 3600 second

$1\ km/hr=\frac{1000}{3600} m/s$