A mass hung on a string that is wrapped around an axle on a wheel produces a tension in the string of 8.40 N. The axle has a radius of 0.0700 m. The wheel has a mass of 4.000 kg and a radius of 0.205 m. (Enter your answers to at least three significant figures.) (a) What is the magnitude of the torque (in N · m) produced by the tension on the axle? τ = N · m (b) The wheel has an acceleration of 0.545 m/s2. What is its moment of inertia (in kg · m2)? I = kg · m2

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form