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2 years ago

PLEASE ANSWER ASAP BEFORE MY TEACHER AND MY MOM KILLES ME PLEASE ASAP

Physics

1 answer:

grandymaker [24]2 years ago

7 0

Answer:

the red at the bottom should not count, but the red at the top is the least dense because it floats upon the other liquids

Explanation:

hope this helps

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a ferryboat has an acceleration of 0.50 m/s. If the ferry travels 125m in 20 seconds while accelerating, what was its initial ve

Papessa [141]

as we know that

acceleration = 0.50 m/s^2

distance traveled = 125 m

time taken = 20 s

now we will use the equation of kinematics

$d = v_i*t + \frac{1}{2}at^2$

$125 = v_i* 20 + \frac{1}{2}*0.50*20^2$

$125 = 20*v_i + 100$

$125 - 100 = 20*v_i$

$v_i = 1.25 m/s$

so its initial speed must be 1.25 m/s

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2 years ago

If the force of an object doubles and the mass also doubles, by what factor does the acceleration change?

LuckyWell [14K]

Starting with the equation for newtons second law of motion: $F = ma \rightarrow 2F = 2ma \rightarrow \frac{2F}{2m} = a \rightarrow \frac{F}{m} = a$

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2 years ago

Dos masas de 8kg es tan unidas en el extremo de una varilla de aluminio de 400mm de longitud. La varilla está sostenida en su pa

enyata [817]

Answer:

The maximum frequency of revolution is 3.6 Hz.

Explanation:

Given that,

Mass = 8 kg

Distance = 400 mm

Tension = 800 N

We need to calculate the velocity

Using centripetal force

$F=\dfrac{mv^2}{r}$

Where, F= tension

m = mass

v= velocity

r = radius of circle

Put the value into the formula

$800=\dfrac{8\times v^2}{200\times10^{-3}}$

$v^2=\sqrt{\dfrac{800\times200\times10^{-3}}{8}}$

$v=4.47\ m/s$

We need to calculate the maximum frequency of revolution

Using formula of frequency

$f=\dfrac{v}{2\pi r}$

Put the value into the formula

$f=\dfrac{4.47}{2\pi\times200\times10^{-3}}$

$f=3.6\ Hz$

Hence, The maximum frequency of revolution is 3.6 Hz.

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2 years ago

How can you use your personal choices to exercise more safely

vagabundo [1.1K]

Not exercising in high-air pollution areas
limiting exercise in hot climates to the early morning and evening
using exercise equipment as it was designed to be used

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3 years ago

Protons have electrical charge; electrons have. electrical charge

tekilochka [14]

Answer:

Explanation:

they both have an electrical charge

protons have a positive charge while electrons have a negative charge but both still have an electrical charge

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3 years ago