3 years ago

An example of a hidden variable would be

Physics

1 answer:

valentinak56 [21]3 years ago

7 0

An example would be bald adults tend to have a shorter lifespan

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An ultrasonic tape measure uses frequencies above 20 MHz todetermine dimensions of structures such as buildings. It does so byem

ohaa [14]

Answer:

a) 1m

b) 2μs

c) 3mm

Explanation:

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2 years ago

A uniform disk with a mass of 5.0 kg and diameter 30 cm rotates on a frictionless fixed axis through its center and perpendicula

igomit [66]

Answer:

Angular acceleration of the disk will be $\alpha =10.714rad/sec^2$

Explanation:

We have given mass of the disk m = 5 kg

Diameter of the disk d = 30 cm = 0.3 m

So radius $r=\frac{d}{2}=\frac{0.3}{2}=0.15m$

Moment of inertia of disk is given by $I=\frac{1}{2}mr^2=\frac{1}{2}\times 5\times 0.15^2=0.056kgm^2$

Force is given by F=4 N

Torque is given as $\tau =Fr=4\times 0.15=0.6N-m$

We also know that torque is given by $\tau =I\alpha$

$0.6=0.056\times \alpha$

$\alpha =10.714rad/sec^2$

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2 years ago

Define electric current and drift velocity.

Blizzard [7]

Answer:

Current- the flow of free charges, such as electrons and ions

Drift velocity- the average speed at which these charges move

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2 years ago

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Name and describe the two layers inside Earth that are undergoing convection and indicate one major consequence of each.

Lilit [14]

Answer:

Mantle and core

Explanation:

The Mantle and Core are the two components within Earth experiencing convection. In several ways the mantle is significant. The one outcome of convective current is the creation of the fresh oceanic lithosphere around OCEANIC RIDGES, formed by mantle upwelling. Core is indeed the planet's innermost layer.

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2 years ago

What phenomena provides evidence of electric fields in the atmosphere

diamong [38]

The phenomena of atmospheric electricity are of three kinds. ..... In the Earth-ionosphere cavity, the electric field and conduction current in the lower atmosphere

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