3 years ago

When the Earth is positioned between the Moon and the Sun the following are possible:

Physics

1 answer:

barxatty [35]3 years ago

5 0

Answer:

lunar eclipse

Explanation:

if the earth is between to two (not bringing the moons orbit into account) a lunar eclipse happens

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Kinetic energy is the energy of

Alina [70]

Kinetic energy is the energy of motion.

The formula for kinetic energy is given as

KE = (0.5) m v²

where m = mass of object , v = speed of object.

an object having some speed and mass will have kinetic energy while an object at rest will not have any kinetic energy since the speed of object at rest is zero.

Since at rest speed is zero. an object has kinetic energy only when it is in motion.

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3 years ago

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Which layer in the image above represents the layer of the Earth composed of liquid metal? *

weeeeeb [17]

Answer:

Explanation:

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3 years ago

A centrifuge in a medical laboratory rotates at an angular speed of 3,500 rev/min, clockwise (when viewed from above). When swit

Ratling [72]

Answer:

The magnitude of angular acceleration is $232.38\ rad/s^2$ .

Explanation:

Given that,

Initial angular velocity, $\omega_i=3500\ rev/min=366.5\ rad/s$

When it switched off, it comes o rest, $\omega_f=0$

Number of revolution, $\theta=46=289.02\ rad$

We need to find the magnitude of angular acceleration. It can be calculated using third equation of rotational kinematics as :

$\omega_f^2-\omega_i^2=2\alpha \theta\\\\\alpha =\dfrac{-\omega_i^2}{2\theta}\\\\\alpha =\dfrac{-(366.51)^2}{2\times 289.02}\\\\\alpha =-232.38\ rad/s^2$

So, the magnitude of angular acceleration is $232.38\ rad/s^2$ . Hence, this is the required solution.

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3 years ago

A 50-ohm resistor in a 0.5 Amp circuit produces how much voltage drop?

ahrayia [7]

25 volts

Explanation:

Use Ohm's law to find the potential drop:

V = IR

= (0.5 A)(50 ohms)

= 25 volts

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3 years ago

Worried that your cat may be ambushed by a mountain lion, you build a fence around

julia-pushkina [17]

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there speed must be 180

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3 years ago