**Answer:**

The acceleration of a point on the wheel is 11.43 m/s² acting radially inward.

Explanation:

The centripetal acceleration acts on a body when it is performing a circular motion.

Here, a point on the bicycle is performing circular motion as the rotation of the wheel produces a circular motion.

The centripetal acceleration of a point moving with a velocity and at a distance of from the axis of rotation is given as:

a = v2/r

Here, V = 8m/ s,r = 0.70 m

∴ a = 8/0.70 = 11.43m/ s2

Therefore, the acceleration of a point on the wheel is 11.43 m/s² acting radially inward.

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**Answer:**

25.7 N

44.8 N

**Explanation:**

Draw a free body diagram of the block. There are three forces: weight force mg pulling down, buoyancy force ρVg pushing up, and normal force N pushing up.

Sum of forces in the y direction:

∑F = ma

N + ρVg − mg = 0

N = mg − ρVg

N = (3.5 kg) (9.8 m/s²) − (1000 kg/m³) (3.5 kg / 4000 kg/m³) (9.8 m/s²)

N = 25.7 N

The water pushes up on the block with a buoyancy force of ρVg. According to Newton's third law, the block pushes back down on the water with an equal force of ρVg.

The other forces are weight force Mg pulling down, and normal force N pushing up.

Sum of forces in the y-direction:

∑F = ma

N − ρVg − Mg = 0

N = Mg + ρVg

N = (1.4 kg + 2.3 kg) (9.8 m/s²) + (1000 kg/m³) (3.5 kg / 4000 kg/m³) (9.8 m/s²)

N = 44.8 N

Mass is a measure of the amount of matter in a substance or an object.

The answer to this question is A."Characterizing soil color"

-I hope this is the answer you are looking for.

Voltage of each component is same.