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3 years ago

What makes lava more thick and viscous

Physics

2 answers:

EastWind [94]3 years ago

7 0

Silica is an element that makes the lava thick and viscous

12345 [234]3 years ago

4 0

An element called Silica.

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Why did the waco tornado happen?

Natali5045456 [20]

it was too much water inside the clouds and the tornado happened

6 0

2 years ago

Air resistance is an example of what type of friction?

Sav [38]

Well, Air resistance is a special type of friction (you cannot classify it in other categories). That force of air-resistance is often observed to oppose the motion of the object,( like every other frictional forces)

Hope this helps!

4 0

3 years ago

A flywheel of J = 50 kg-m2 initially standing still is subjected to a constant torque. If the angular velocity reaches 20 Hz in

Karolina [17]

Answer:

$\tau = 1256.5\ N.m$

Explanation:

given,

J = 50 kg-m²

frequency, f = 20 Hz

time ,t = 5 s

we know,

angular velocity = 2 π f

ω = 2 π x 20

ω = 125.66 rad/s

now, angular acceleration calculation

$\alpha = \dfrac{\omega_f-\omega_i}{t}$

$\alpha = \dfrac{125.66-0}{5}$

α = 25.13 rad/s²

Torque given to the flywheel.

$\tau = I \alpha$

$\tau = 50\times 25.13$

$\tau = 1256.5\ N.m$

Torque of the given flywheel is equal to $\tau = 1256.5\ N.m$

7 0

3 years ago

A motorcycle together with its Rider with 150 kg how much work is needed to set its movement at 15 metre per second.

AVprozaik [17]

Answer:

W = 16875 J

Explanation:

We have,

Mass of a motorcycle together with its rider is 150 kg

It is required to find the work is needed to set its movement at 15 metre per second. The work done is given by :

$W=\dfrac{1}{2}mv^2$

Plugging all the values in above formula such that :

$W=\dfrac{1}{2}\times 150\times (15)^2\\\\W=16875\ J$

So, the work of 16875 J is needed.

5 0

2 years ago

Which circuit has the larger equivalent resistance: a circuit with two 10 ohm resistors connected in parallel or a circuit with

Ganezh [65]

Answer:

A circuit with two 10 ohm resistors connected in series.

Explanation:

The formula for the equivalent resistance for resistors in parallel is

$\frac{1}{Rt} = \frac{1}{R1} + \frac{1}{R2}$ So if R1=R2= 10 $\frac{1}{Rt} = \frac{1}{10} + \frac{1}{10} = \frac{2}{10} Rt =\frac{10}{2} =5 ohm$

The formula for the equivalent resistance for resistors in series is

Rt = R1 + R2 So Rt= 10 + 10 = 20

6 0

3 years ago