The Answer Is:
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Answer:
We conclude that the mass of a rock with a force of 500 N and an acceleration of 75 m/s² is 6.7 kg.
Hence, option D is correct.
Explanation:
Given
To determine
Mass m = ?
Important Tip:
-
The mass of a rock can be found using the formula F = ma
Using the formula

where
- a is the acceleration (m/s²)
now substituting F = 500, and a = 75 m/s² in the formula


switch sides

Divide both sides by 75

simplify

kg
Therefore, we conclude that the mass of a rock with a force of 500 N and an acceleration of 75 m/s² is 6.7 kg.
Hence, option D is correct.
For item#1 , see attached picture, there is a voltage source, a resistor and wire (where current flow).
For item#2, we use the formula V=IR where "V" is for the voltage, "I" is for the current and "R" for the resistance
Solving for I:
I = v/r
I = 45volts/15k ohms
I=3 mA
For item#3, power is P=VI
p = 45volts * 3ma
P = 0.135 Watts
At the bottom of the thermometer and it slowly goes up as the temperature changes
The 'plum pudding<span>' </span>model of the atom<span> was proposed by JJ Thomson, who had also discovered the </span>electron<span>. It was put forth before the discovery of the nucleus. According to this </span>model<span>, the </span>atom<span> is a sphere of positive charge, and negatively charged </span>electrons<span> are embedded in it to balance the total positive charge.</span>