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3 years ago

Three liquids that will not mix are poured into a cylindrical container. The volumes and densities of the liquids are

Physics

1 answer:

STatiana [176]3 years ago

3 0

<h2>Force on the bottom of the container due to liquids is 21.86 N</h2>

Explanation:

Total force is total weight of liquid.

Weight = Mass x Acceleration due to gravity

Liquid 1

Volume = 0.574 L = 574 cm³

Density = 2.50 g/cm³

Mass = 574 x 2.50 = 1435 g = 1.435 kg

Liquid 2

Volume = 0.445 L = 445 cm³

Density = 1.04 g/cm³

Mass = 445 x 1.04 = 462.8 g = 0.463 kg

Liquid 3

Volume = 0.498 L = 498 cm³

Density = 0.659 g/cm³

Mass = 498 x 0.659 = 328.18 g = 0.33 kg

Total mass of liquids = 1.435 + 0.463 + 0.33 = 2.228 kg

Weight = Mass x Acceleration due to gravity

Weight = 2.228 x 9.81

Weight = 2.228 x 9.81 = 21.86 N

Force on the bottom of the container due to these liquids = 21.86 N

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Which relationship benefits two organisms

grandymaker [24]

Answer:

mutualism

Explanation:

Mutualism, a relationship in which both species benefit, is common in nature. In microbiology, there are many examples of mutualistic bacteria in the gut that aid digestion in both humans and animals.

8 0

3 years ago

At what speed must a 950-kg subcompact car be moving to have the same kinetic energy as a 3.2×104−kg truck going 20 km/h?

Ostrovityanka [42]

<u>Answer:</u>

950-kg subcompact car be moving to have the same kinetic energy of truck at 116.08 km/hr

<u>Explanation:</u>

Kinetic energy of body with mass m and moving at velocity v is given by

$KE=\frac{1}{2} mv^2$

KE of truck $= \frac{1}{2}*3.2*10^4*20^2$

KE of subcompact car $= \frac{1}{2}*950*v^2$

Equating

$\frac{1}{2}*3.2*10^4*20^2= \frac{1}{2}*950*v^2\\ \\ v=116.08 km/hr$

So 950-kg subcompact car be moving to have the same kinetic energy of truck at 116.08 km/hr

6 0

4 years ago

The Bullet Train The Shinkansen, the Japanese "bullet" train, runs at high speed from Tokyo to Nagoya. Riding on the Shinkansen,

jeyben [28]

Answer:

68.6 m/s

Explanation:

v = Speed of sound in air = 343 m/s

u = Speed of train

$f_1$ = Actual frequency

From the Doppler effect we have the observed frequency as

When the train is approaching

$f=f_1\frac{v+u}{v}$

When the train is receeding

$\frac{2f}{3}=f_1\frac{v-u}{v}$

Dividing the above equations we have

$\frac{f}{\frac{2f}{3}}=\frac{f_1\frac{v+u}{v}}{f_1\frac{v-u}{v}}\\\Rightarrow \frac{3}{2}=\frac{v+u}{v-u}\\\Rightarrow 3v-3u=2v+2u\\\Rightarrow v=5u\\\Rightarrow u=\frac{v}{5}\\\Rightarrow u=\frac{343}{5}\\\Rightarrow u=68.6\ m/s$

The speed of the train is 68.6 m/s

5 0

3 years ago

How does the body maintain homeostasis? Give two or more examples of how this is accomplished. Provide supporting details. Be de

Minchanka [31]

Explanation:

-body temp: when cold, erector muscle contract, hair raise, vasoconstriction occurs, sweat production reduces, muscle shiver to enhance metabolism, and thyroid gland secret more thyroxine to enhance metabolism

-water potential balance: when we are thirsty, pituitary gland secret more ADH, kidney tubules become more permeable to water, so more water re-absorbed, less urine produced, retaining more water.

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3 years ago

A car hits another and the two bumpers lock together during the collision. is this an elastic or inelastic collision?

valkas [14]

Inelastic.
If it was elastic, they'd bump right off each other. But since they've been locked, or stuck together, this is inelastic.

8 0

4 years ago