Answer:
B. Identifying the types of data to be gathered
Explanation:
Identifying the types of data to be gathered is one of the part of designing a set of experimental procedure.
An experimental procedure is a methodical process that must be followed in order to attain the goal of the experiment.
- As with most experiments, data is collected for further analysis and interpretation.
- The choice of way of collecting data and the type of data to be collected is very important when designing an experiment.
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➷ Speed = distance / time
Substitute in your values:
Speed = 720 / 8
Speed = 90
They traveled 90 miles per hour
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<h3><u>Answer</u>;</h3>
A. There must be an equal number of atoms of each element on both sides of the equation.
<h3><u>Explanation;</u></h3>
- Chemical equations need to be balanced in order to satisfy the law of conservation of matter, which states that in a closed system matter is neither created nor destroyed.
- The number of atoms of each element should be equal on either side of the equation, that is the reactants and product side.
- Mass of the diver (m) = 90 Kg.
- Height of the board from the ground (h) = 10 m.
- Acceleration due to gravity (g) = 9.8 m/s^2.
- Height of the diver from the ground when he reaches point C (x) = 5m
- Initial velocity (u) = 0 m/s
- We know, gravitational potential energy of a body = mass × acceleration due to gravity × height.
- Therefore, the gravitational potential energy of the diver when he reaches point C (GPE) = mg(h - x)
- or, GPE = [90 × 9.8 × (10-5)] J
- or, GPE = [90 × 9.8 × 5] J
- or, GPE = 4410 J
- For a freely falling body,
- v^2 - u^2 = 2gh
- or, v^2 = 2gh
- We know, kinetic energy of a body = 1/2 mv^2
- Therefore, kinetic energy of the diver when he reaches point C (KE) = 1/2 m(2gx)
- Here, 2gx = (2 × 9.8 × 5) = 98 (m/s)^2
- We have already seen v^2 = 2gh
- or, v = √2gh
- So, the velocity of the diver = √2gx = √98 m/s = 9.9 m/s
<u>Answers:</u>
<em><u>The </u></em><em><u>gravitational</u></em><em><u> potential</u></em><em><u> energy</u></em><em><u> of</u></em><em><u> the</u></em><em><u> </u></em><em><u>diver </u></em><em><u>when </u></em><em><u>he</u></em><em><u> reaches</u></em><em><u> point</u></em><em><u> C</u></em><em><u> </u></em><em><u>is </u></em><em><u>4</u></em><em><u>4</u></em><em><u>1</u></em><em><u>0</u></em><em><u> </u></em><em><u>J.</u></em>
<em><u>The </u></em><em><u>velocity</u></em><em><u> </u></em><em><u>of </u></em><em><u>the </u></em><em><u>diver </u></em><em><u>is </u></em><em><u>9</u></em><em><u>.</u></em><em><u>9</u></em><em><u> </u></em><em><u>m/</u></em><em><u>s.</u></em>
Hope you could get an idea from here.
Doubt clarification - use comment section.
Answer:
Tbh it's hard to find out what the blank line is, but I did my best
Explanation:
Wires provide a path through which current can flow from one end of a battery to the other. Wires are made from materials that carry, or conduct, electrons more easily than other materials. Materials that conduct electrons easily are called conductors. Copper and aluminum are good conductors.
