Physics, 22.10.2019 20:00, notseansafe

Asoap-box derby race car sits on the starting ramp. the ramp is elevated at an angle of 8.5 degrees. the angle between the gravity vector and the ramp surface is a . the force of gravity on the car is 1225 n. the normal force of the track on the car is 1210 n. the frictional force of the track on the car is 15.2 n. what is the net force on the car?

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answered: bobtothemaxthe1st

$F_{net} =165.87\ N$

Explanation:

given,

angle of inclination with the horizontal = 8.5°

force of gravity = 1225 N

normal force on car = 1210 N

frictional force = 15.2 N

net force = ?

equating horizontal forces

$F_x = f - mg sin \theta$

F_x = 15.2 - 1225 sin 8.5^0

F_x = -165.87 N

equating vertical forces

$F_y = N - mg cos\theta$

F_y = 1210 - 1225 cos 8.5^0

F_y = -1.54 N

net force

$F_{net} = \sqrt{F_x^2+F_y^2}$

$F_{net} = \sqrt{-165.87^2+-1.54^2}$

$F_{net} = \sqrt{27515}$

$F_{net} =165.87\ N$

answered: Guest

quantum mechanics or quantum physics is physics of very small objects (particles) and physical entities.

quantum physics has some parallels to our macro world and some pretty unique ideas which theoretically and mathematically proven to be true even though we will never be able to access them because of our size.

there are many types of particles: subatomic, elementary etc.

subatomic means they are smaller than atom, elementary means they are at the very basis of everything.

subatomic particles are for eg. protons, neutrons but not electrons.

elementary particles are categorised into 3 groups by what they do.

these 3 groups are quarks, leptons and bosons.

light for example is a particle more precisely a photon a part of leptons.

proton (subatomic particle) is made out of 2 up quarks and 1 down quark each of these has a fractional charge like $\frac{1}{3}$ . (i crazy)

most famous scientist who contributed to this physics are:

max planckalbert einsteinerwin schrödingermany

the topic itself us understand a lot and will probably be vastly used in the future (quantum computers, understanding the big bang,

we also must not forget quantum effects like:

superposition (where 1 thing can be this and that at the same time),entanglement (where two particles are seemingly connected by some sort of unknown (or known) force, energy, matter (i know all that can be the same at least it was at the beginning)

and there is more. but probably too much for this answer to be consistent due to my average understanding of this topic.

hope this you understand quantum mechanics a little more. i'm not an expert in the topic (so don't be like wth if you are an expert) but i'm very interested in it.

anyways quantum physics is a very hard topic (harder than physics (perhaps)) therefore searching for every information there is about it and learning it is unfortunately impossible (you can only specialise into 1 - 3 things or more (perhaps

have fun and i wish you luck!

r3t40

answered: Guest

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

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Asoap-box derby race car sits on the starting ramp. the ramp is elevated at an angle of 8.5 degrees....