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MA_775_DIABLO [31]
3 years ago
5

a student compared two samples of matter. he recorded the results in the chart. Sample A: Appearance: shiny and yellow. Sample B

: Appearance: Dull and yellow. Which property do the two samples have in common? A. volume. B. color
Physics
2 answers:
Vladimir [108]3 years ago
6 0

Answer:

The answer are B

Explanation:the two samples haves yellow color :)

IgorLugansk [536]3 years ago
5 0

Answer:

B or 2

Explanation:

both of the samples contain a yellow color.

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A 91.1 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.73 r
KIM [24]

Answer:

\omega_f = 1.08 rad/s

Explanation:

As we know that there is no external torque on the system of platform, banana and the monkey

so the angular momentum of the system will remains conserved

so here we can say

L_i = L_f

I_o\omega = (I_o + m_1r_1^2 + m_2r_2^2)\omega_f

here we know that

I_o = \frac{1}{2}mR^2

I_o = \frac{1}{2}(91.1)(1.61)^2 = 118.1 kg m^2

m_1 = 9.41 kg

r_1 = \frac{4}{5}(1.61) = 1.29 m

m_2 = 21.1 kg

Now from above equation

118.1(1.73) = (118.1 + 9.41(1.29^2) + 21.1(1.61^2))\omega_f

118.1(1.73) = 188.45\omega_f

\omega_f = 1.08 rad/s

8 0
3 years ago
An input force is applied to a 2 cm diameter piston. The piston compresses oil and is connected to a 4 cm diameter output piston
____ [38]

Answer:

4 times

Explanation:

Given:

diameter of the input piston, d_i=2\ cm=0.02\ m

diameter of the output piston, d_o=4\ cm=0.04\ m

In such mechanical arrangements the fluid acts as an incompressible link and the pressure remains uniform throughout the fluid bulk.

Then, by the Pascal's law:

\frac{F_i}{A_i} =\frac{F_o}{A_o}

where:

F_i\ \&\ F_o are the input and the output forces respectively.

A_i\ \&\ A_o are the input and the output area of pistons respectively.

\frac{F_i\times 4}{\pi.d_i^2} =\frac{F_o\times 4}{\pi.d_o^2}

\frac{F_i}{d_i^2} =\frac{F_o}{d_o^2}

\frac{F_o}{0.04^2}=\frac{F_i}{0.02^2}

F_o=4\times F_i

8 0
4 years ago
How many stars are in our galaxy??
Firdavs [7]

Answer:

Explanation:

There are 400 billion stars in our galaxy

8 0
3 years ago
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How is a magnetic field generated?
alekssr [168]
It would be B I think
4 0
3 years ago
In the compound MgCl2, how many atoms of Mg are there?
Aleksandr [31]
There is 1 Mg and 2 Cl i think
3 0
3 years ago
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