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2 years ago

¿Por qué en algunas partes el agua tiene mayor presión?

1 answer:

7 0

Cuando la presión aumenta en el agua, disminuye el punto de fusión del hielo. Ósea esta a temperatura muy alta.

Espero que esto te ayude y no me haya confundido

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A 98.1 kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.69 r

sertanlavr [38]

Answer:

Explanation:

The problem is based on conservation of angular momentum.

Moment of inertia of the disc = 1/2 m R² , m is mass of the disc and R is its radius.

= 1/2 x 98.1 x 1.51²

= 111.84 kg m²

Moment of inertia of disc + moment of inertia of bananas + monkey

= 1/2 x 98.1 x 1.51² + 9.29 x .45 x 1.51 + 20.3 x 1.51² ( moment of inertia of banana and monkey will be equal to mass x radial distance from axis² )

= 111.84 + 6.31 +46.28

= 164.43 kg m²

Now applying law of conservation of angular momentum

= I₁ ω₁ = I₂ω₂

111.84 x 1.69 = 164.43 x ω₂

ω₂ = 1.15 rad / s

6 0

3 years ago

An electric motor and a single-fixed pulley work together to lift a 500 kg crate 50.0 m. How much work was done?

tester [92]

Answer: The work done is 245000 J.

Explanation:

The formula for the force due to the weight of the object is as follows;

$F=mg$

Here, m is the mass of the object and g is the acceleration due to gravity.

Put m=500 kg and g=9.8 meter per second.

$F=(500)(9.8)$

$F=4900 N$

The formula for the work done is as follows;

$W=Fs$

Here, F is the force and s is the displacement.

Put F=4900 N and s=50.0 m.

$W=(4900)(50)$

$W=245000 J$

Therefore, the work done is 245000 J.

3 0

3 years ago

Read 2 more answers

Comparing helium atoms with nitrogen molecules at the same temperature, the helium atoms on average are moving _______ and have

mylen [45]

Answer:

Helium atoms compared to nitrogen atoms are moving faster and have a greater kinetic energy.

Explanation:

The molecular velocity of a gas at room temperature is inverse proportional to the square root of its molecular mass.

The greater the molecular mass of the gas the lesser the average speed of its molecules. Comparing the molecular masses of nitrogen and helium, helium is found to have a lower molecular mass and a corresponding greater velocity.

Hence helium moves faster than nitrogen and has a higher kinetic energy than nitrogen

6 0

3 years ago

Complete the statement below with all that apply.

lianna [129]

Acceleration is the rate of change of velocity, and velocity is the change in displacement over the change in time so the answer would be A.

3 0

2 years ago

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Two geological field teams are working in a remote area. A global positioning system (GPS) tracker at their base camp shows the

Masja [62]

Answer: