Physics, 28.05.2021 01:00 olamagdziak2007

The power radiated by a filament is 0.3 watts. The diameter of the filament is 0.5 millimeters, and it has a length of 50 millimeters. If the surface area is 4 x 10^-8 m^2?, what is the temperature?

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Answer from: Quest

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

An object is located 5.0 cm from a convex lens. the lens focuses light at a distance of 10.0 cm. wha

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

Answer from: Quest

The answer which is not a detail carson used to describe the pool in the cave at low tide is b. hundreds of periwinkles browse the branches and roots of the trees.

Answer from: Quest

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.

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The power radiated by a filament is 0.3 watts. The diameter of the filament is 0.5 millimeters, and...

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