Physics, 04.06.2021 01:00, LexyClaire

"Un ciclista viaja 20 km en una dirección 209 al norte del oeste y luego 30 km en una dirección 35' al este del norte para finalizar se desplaza 12 km al este. Encuentre el modulo del vector RESULTANTE
31.41 km

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answered: Guest

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

answered: Guest

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.

answered: Guest

explanation:

no i dont know how to solve this you should probably try to google the answer

answered: Guest

The law of conservation of momentum will be the same no matter where you apply it.the equation will be 77.4 + m (mass of canister) *3.6

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"Un ciclista viaja 20 km en una dirección 209 al norte del oeste y luego 30 km en una dirección 35'...