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son4ous [18]
3 years ago
10

The Pacific Ocean has a durface area of about 116,214,700 km^2 and an average depth of 3940m. Estimate the volume of the Pacific

Ocean in cubic centimeters.​
Physics
1 answer:
Anastaziya [24]3 years ago
4 0

The volume is given by:

V = Ad

V = volume, A = surface area, d = depth

Given values:

A = 116214700km² = 1.162147×10¹⁸cm², d = 3940m = 394000cm

Plug in and solve for V:

V = 1.162147×10¹⁸(394000)

V = 4.57885918×10²³cm³

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Tresset [83]

Answer:

The angular speed of the record is 3.36 rad/s.

Explanation:

Given that,

Mass of record= 0.10 kg

Radius = 0.10 m

Angular speed = 4.7 rad/s

Moment of inertia I=5.0\times10^{-4}\ kgm^2

Mass of putty = 0.020 kg

We need to calculate the angular speed

Using law of conservation of momentum

L_{i}=L_{f}

I\omega_{i}=(I+mr^2)\omega_{f}

\omega_{f}=\dfrac{I\omega_{i}}{(I+mr^2)}

Put the value into the formula

\omega_{f}=\dfrac{5.0\times10^{-4}\times4.7}{5.0\times10^{-4}+0.020\times(0.10)^2}

\omega_{f}=3.36\ rad/s

Hence, The angular speed of the record is 3.36 rad/s.

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3 years ago
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Explanation:

6 0
3 years ago
You need to design an experiment to measure the free-fall acceleration. You have an inclined plane made of steel and several obj
Nataliya [291]

Attached a diagram of the scheme described in the problem ..

To solve the problem we need to know the relationship between kinetic and normal force, so

F_k=\mu_k F_N (1)

Where

\mu_k = coefficient of kinetic

F_N=  Normal force

We perform the sum of forces as well,

\sum F_x = Ma(2)

a= Acceletarion

For Normal Force in Y,

F_N= Mgcos \theta  (3)

The force in X,

\sum F_x = Mgsin\theta - F_x (4)

Replacing in (4)

Ma = Mgsin\theta - \mu_k F_N

Ma = Mgsin\theta - \mu_k F_N

Ma = Mgsin\theta - \mu_k Mg cos\theta

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In this way, it does not matter which object is chosen.

6 0
3 years ago
Which type of energy increases when an object's atoms move faster?
Travka [436]

Answer:

thermal

Explanation:

when an object's atoms move it causes friction, when friction happens, it heats ups causing thermal energy

8 0
3 years ago
Read 2 more answers
Two ice skaters, Lilly and John, face each other while at rest, and then push against each other's hands. The mass of John is tw
seropon [69]

Answer:

Lilly's speed is two times John's speed.

Explanation:

m = Mass

a = Acceleration

t = Time taken

u = Initial velocity

v = Final velocity

The force they apply on each other will be equal

F=ma\\\Rightarrow a_l=\frac{F}{m_l}

F=ma\\\Rightarrow a_j=\frac{F}{2m_l}\\\Rightarrow a_j=\frac{1}{2}a_l

v=u+at\\\Rightarrow v_l=0+\frac{F}{m_l}\times t\\\Rightarrow v_l=a_lt

v=u+at\\\Rightarrow v_l=0+\frac{F}{2m_l}\times t\\\Rightarrow v_j=\frac{1}{2}a_lt\\\Rightarrow v_j=\frac{1}{2}v_l\\\Rightarrow v_l=2v_j

Hence, Lilly's speed is two times John's speed.

4 0
3 years ago
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