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3 years ago

You are asked to determine the density of a liquid. What lab equipment is most helpful to find density of the liquid?

Physics

2 answers:

crimeas [40]3 years ago

7 0

The answer is D, the graduated cylinder and a triple beam-balance

AnnyKZ [126]3 years ago

6 0

D. The graduated cylinder is used to find the volume, and triple beam balance is used to find the mass.

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The voltage across a membrane forming a cell wall is 84.0 mV and the membrane is 9.40 nm thick. What is the electric field stren

Katarina [22]

Answer:

8.9*10^6 V/m

Explanation:

The expression for electric field strength E is given as

$E=\frac{V}{d}$

where V= voltage

d= distance of separation

Given data

$voltage= 84 mV= 84*10^-^3\\distance= 9.4*10^-^9$

substituting our given data into the electric field strength formula we have

$E= \frac{84*10^-^3}{ 9.4*10^-^9} \\\\E= \frac{84}{9.4} *10^-^3^-^(^-^9^)\\\\E= \frac{84}{9.4} *10^-^3^+^9\\\\E= \frac{84}{9.4} *10^6\\\\E=8.9*10^6 V/m$

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3 years ago

Which describes an INHERITED TRAIT of a plant?

Ronch [10]

Answer: the green color of a leaf

Explanation: because the other things are physical changes of a plant that don't get passes down to offspring

7 0

3 years ago

Read 2 more answers

A solid cylinder with a radius of 10 cm and a mass of 3.0 kg is rotating about its center with anangular speed of 3.5 rad/s. Wha

Lynna [10]

Answer:

kE=0.0735 J

Explanation:

Given that

Radius ,R=10 cm = 0.1 m

Mass ,m= 3 kg

Angular speed ,ω = 3.5 rad/s

We know that moment of inertia for solid sphere given as

$I=\dfrac{2}{5}mR^2$

Kinetic energy

$KE=\dfrac{1}{2}I\omega^2$

Now by putting the values

$KE=\dfrac{1}{2}\times \dfrac{2}{5}mR^2\times \omega^2$

$KE=\dfrac{1}{2}\times \dfrac{2}{5}\times 3\times 0.1^2\times 3.5^2\ J$

kE=0.0735 J

Therefore the kinetic energy will be 0.0735 J

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3 years ago

What is true of both gravity and magnetism?

stira [4]

Explanation:

I want to say option B - Both forces can act without objects touching.

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3 years ago

How might variation in the color of beetles help them survive ?

GREYUIT [131]

Answer:

they can blend in with their suroundings

Explanation:

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3 years ago