3 years ago

Individuals who smoke will have a higher frequency of developing cancer later in life.

Physics

1 answer:

ivanzaharov [21]3 years ago

5 0

True

idk what you're asking

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Two forces F1 and F2 of equal magnitude are applied to a brick of mass 20kg lying on the floor as shown in the figure above. If

jeka57 [31]

Let $F_{1}=F_{2}=F$ .

Normal force equals (using Newton's third law) $N=mg+F\sin30^{o}-F\sin37^{o}$ .

$F_{f}\leq \mu N = \mu(mg+F\sin30^{o}-F\sin37^{o})$ , but $F_{f}\leq F(\cos30^o+\cos37^o)$ for all $F_{f}$ (in order to start moving the break). Therefore $F(\cos 30^o+\cos37^o)\geq \mu(mg+F\sin30^{o}-F\sin37^{o})$ , solving for $F$ : $F\geq \frac{\mu mg}{\cos30^o+\cos37^o-\mu\sin30^o+\mu\sin37^o}\approx 46,91\; \textbf{N}$

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3 years ago

An atom of sodium (Na) gives up an electron to chlorine (Cl) to form table salt. What type of bond is this?

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Your answer will be C!~

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3 years ago

Which explanation is least likely to be evidence for geological processes changing Earth's surface?

horsena [70]

Pollution isn’t a geological process.

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1. The number of protons in an atom, unique to each element, is known as the ___________.

Gnoma [55]

Answer:

atomic number

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the number of protons in an atom is called its "atomic number"

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2 years ago

How does the momentum of a 75 kilogram stationary football player compare with that of a 70 kilogram player moving at a velocity

pashok25 [27]

Momentum of an object = (its mass) x (its speed) .

Since speed is a factor of momentum, an object that
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-- The moving player has momentum.

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