Physics, 29.10.2019 17:31 adibakawsar

Arnold makes a chart to summarize what happens when light interacts with matter and is reflected. a 2 column by 4 row table. column 1 is titled type of interaction and contains the following entries: specular reflection, diffuse reflection, scattering. column 2 is titled description and contains the following entries: occurs when light strikes smooth surface, follows the law of reflection, reflected rains move in the same direction, occurs when light strikes rough surface, follows the law of reflection, reflected rays move in different directions, occurs when light strikes particles in atmosphere, follows the law of reflection, short wavelengths are scattered the most which best describes arnold’s error? in specular reflection, reflected rays move in the same direction. in scattering, short wavelengths are scattered the least. in diffuse reflection, reflected rays move in the same direction. the law of reflection is not followed in scattering.
the law of reflection is not followed in scattering.

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to treat tumors in the body

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Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.

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An atom that has fewer electrons that protons is called a positive ion.

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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.

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Arnold makes a chart to summarize what happens when light interacts with matter and is reflected. a...