The momentum of a moving object is given by:
where m is the mass of the object and v its speed.
In this problem, the ball has a mass of
and its momentum is
, so we can rearrange the previous equation to find the speed of the ball:
Answer:
D. Quarks pair with other quarks to form protons and neutrons.
Explanation:
Quarks are one of the types of fundamental particles: in particular, they are the particles that form hadrons (consisting of 3 quarks) and mesons (consisting of 2 quarks).
Protons and neutrons are hadrons, so they consist of 3 quarks each: therefore, this statement:
D. Quarks pair with other quarks to form protons and neutrons.
is the correct one.
The other statements are wrong because:
A --> protons and neutrons do not contain leptons (leptons are other fundamental particles, such as the electron and the muon)
B --> bosons at the mediators of the fundamental forces, and they do not consist of quarks. Photon is one of the bosons.
C --> protons and neutrons do not contain photons
E --> protons do not contain electrons
Answer:
Explanation:
1.2(0) + 3(0.8) + 1.4(0.8/2) / (1.2 + 3 + 1.4) = 0.5285714... ≈ 0.53 m
I think the correct answer would be horizontal exchanges or market. It is a type of market wherein a service or a product would meet a need of a very wide range of consumers from different sectors. Hope this answers the question. Have a nice day.