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soldi70 [24.7K]
3 years ago
15

If an object floats, the volume of the displaced water is equal to the volume of the whole object. True or false?

Physics
1 answer:
azamat3 years ago
8 0

Answer:

True

Explanation:

This is in fact what the Archimedes principle states, and what he used in the famous anecdote about finding if  the crown of the King was really made of gold.

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Hi i do not have a question i just want to show u my cute doggo :)) ik everyone on here is probably stressed so hope this makes
Arisa [49]

Answer:

wooowwwwww

Explanation:

it's so so cuteeeeeeee

I love dogs tho:))

5 0
3 years ago
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Which question about the discovery of the earth revolving around the sun could be best answered using scientific inquiry
Butoxors [25]
AAaaahh yes, T'was that a lovely chap by the name of Copernicus, has discovered us a little secret, well. why dont you share?

Copernicus: well uh, i'm a bit shy

ME: who a gives a flying *bleep* about your feelings man! just man up an discover the earth's rotation already! 
8 0
3 years ago
En un recipiente de cobre de forma rectangular de aproximadamente 3.5 m largo por 4.5m ancho tiene una temperatura en temporada
Darina [25.2K]

Answer:

A_f= 15,769 m²

Explanation:

Este es un ejercicio de dilatación térmica,  

          ΔA = (2α) A₀ ΔT

el arrea de recipiente

          A₀ = L A

          A₀ = 3,5 4,5

          A₀=  15,75 m²

el coeficiente de dilatación térmica es alfa = 16,6 10⁻⁶ C⁻¹

calculemos

            ΔA = 2 16,6 10⁻⁶  15,75 ( 40 -4)

            ΔA = 522,9 (36)  10⁻⁶  

            A= 1,88 10⁻²  m2

el cambio de volumen es

          ΔA = A_f – A₀

          A_f = A₀ +  ΔA

          A_f=  15,75 +1,88 10⁻²  

          A_f= 15,769 m²

3 0
3 years ago
An object is attached to a vertical spring and slowly lowered to its equilibrium position. This stretches the spring by an amoun
trasher [3.6K]

Answer:

2d

Explanation:

For any instance equivalent force acting on the body is

mg-kd= m\frac{d}{dt}\frac{dx}{dt}

Where

m is the mass of the object

k is the force constant of the spring

d is the extension in the spring

and

d/dt(dx/dt)=  is the acceleration of the object

solving the above equation we get

x= Asin\omega t +d

where

\omega= \sqrt{\frac{k}{m} } = \frac{2\pi}{T}

A is the amplitude of oscillation from the mean position.

k= spring constant , T= time period

Here  we are assuming  that at t=T/4

x= 0   since, no extension in the spring

then

A=- d

Hence

x=- d sin wt + d

now, x is maximum when sin wt=- 1

Therefore,

x(maximum)=2d

7 0
3 years ago
If a motorbike of mass 150 kg moving with the speed of 36 km/hr produces
Aloiza [94]

Answer:

P = 7500 [W]

Explanation:

First We must use Newton's second law to find the force. Newton's Second Law tells us that the sum of forces on a body is equal to the product of mass by acceleration.

∑F = m*a

where:

m = mass = 150 [kg]

a = acceleration = 5 [m/s²]

F = 150*5\\F = 750 [N]

We know that the work is determined by multiplying the force by the distance, in this way the units of the work are [N*m] which corresponds to 1 Joule [J].

And the power is determined by dividing the work by the time, in this way we have that [J/s] corresponds to 1 [W].

We must convert the speed from kilometers per hour to meters per second.

36[km/hr]*1000[\frac{m}{1km}]*[\frac{1hr}{3600s} ]=10 [m/s]

P=F*v

where:

P = power [W]

F = force = 750 [N]

v = 10 [m/s]

P = 750*10\\P = 7500 [W]

8 0
2 years ago
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