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3 years ago

Radial tires generally give the best gas mileage. a. true b. false

1 answer:

4 0

I believe the correct answer is true. Radial tires generally give the best gas mileage. The advantages of radial tires include longer tread life, better steering characteristics, and less rolling resistance, which increases gas mileage. Hope this answers the question.

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Which option describes nonmetals?

jonny [76]

Answer:

D: Conducts electrcity poorly

Explanation:

Most conductors are metals, and non- metals are insulators, therefore they dont conduct electricity

8 0

2 years ago

Darwin believed that emotional expressions began as ________ that came to have evolutionary value because they ________. Select

Strike441 [17]

Answer:

c. physiological reactions; convey emotional states to other members of the species

Explanation:

Darwin believed that emotional expressions began as physiological reactions that came to have evolutionary value because they convey emotional states to other members of the species. These reactions are used by many different types of species to convey various things.

5 0

2 years ago

A proton enters a region of constant magnetic field, perpendicular to the field and after being accelerated from rest by an elec

kicyunya [14]

Answer:

B = 1.1413 10⁻² T

Explanation:

We use energy concepts to calculate the proton velocity

starting point. When entering the electric field

Em₀ = U = q V

final point. Right out of the electric field

em_f = K = ½ m v²

energy is conserved

Em₀ = Em_f

q V = ½ m v²

v = $\sqrt{2qV/m}$

we calculate

v = $\sqrt{\frac{ 2 \ 1.6 \ 10^{-19} \ 300}{1.67 \ 0^{-27}} }$

v = $\sqrt{632.3353 \ 10^8}$

v = 25.15 10⁴ m / s

now enters the region with magnetic field, so it is subjected to a magnetic force

F = m a

the force is

F = q v x B

as the velocity is perpendicular to the magnetic field

F = q v B

acceleration is centripetal

a = v² / r

we substitute

qvB =1/2 m v² / r

B = v $\frac{m v}{2 q r}$

we calculate

B = $\frac{1.67 \ 10^{-27} 25.15 \ 10^4 }{1.6 \ 10^{-19} 0.23}$

B = 1.1413 10⁻² T

8 0

2 years ago

Unlike the outer planets all the inner planets have rings

AfilCa [17]

True or False. The answer to the question

6 0

3 years ago

Ayuda porfavor! y que sea buena respuesta..

Sav [38]

Answer:

Dencidad = 600 kg/m³

Explanation:

Dados los siguientes datos;

Lado del cubo = 10 cm a metros = 10/100 = 0,1 m

Masa = 0,6 kg

Para encontrar la densidad;

En primer lugar, determinaríamos el volumen del cubo usando la fórmula;

Volumen del cubo = lados³

Volumen del cubo = 0.1³

Volumen del cubo = 0.001 m³

Ahora, podemos encontrar la densidad usando la fórmula;

Dencidad = masa/volumen

Dencidad = 0,6/0,001

Dencidad = 600 kg/m³

8 0

2 years ago