Physics, 10.11.2020 17:00 AllanCasey12

A beam of 1 MeV neutrons of intensity 5x108 neutrons/(cm2 sec) strikes a thin 12C target. The area of the target is 0.5 cm2 and is 0.05 cm thick. The beam has a cross-sectional area of 0.1 cm2 . At 1 MeV, the total cross section of 12C is 2.6 b. (a) At what rate do interactions take place in the target

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The objects do not reach terminal velocity there is not enough time from the time the object falls from when it hits the ground to achieve terminal velocity. an object must be placed higher to achieve terminal velocity in order to be in free fall.

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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.

Answer from: Quest

Make them both to where they have the denominator of 18that makes 3/2 equal 27/18 and 1/9 equal 2/18so now you have 27/18x+5=2/18subtract 5 from the other sideso now you have 27/18x+2/18-5then subtract 2/18 from 27/18 to get 25/18x=-5then divide 25/18 by -5 and your answer will be -5/18

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soil is vegetal. in forest or prairies, as well as agricultural fields, dead plants are transformed by different kinds of living organisms.

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A beam of 1 MeV neutrons of intensity 5x108 neutrons/(cm2 sec) strikes a thin 12C target. The area o...

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