Chemistry, 28.05.2020 19:02 bossboybaker

Ella has a mass of 56 kg, and Tyrone has a mass of 68 kg. Ella is standing at the top of a skateboard ramp that is 1.5 meters tall. Which conclusion is best supported by the given information?

If Tyrone stands at the top of the same ramp, his potential energy will be less than Ella’s.
If Tyrone stands at the top of a 1 m high ramp, his potential energy will be greater than Ella’s.
If Tyrone stands at the top of the same ramp, his potential energy will be the same as Ella’s.
If Tyrone stands at the top of a 2 m high ramp, his potential energy will be greater than Ella’s.

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Answer from: lbedonte

The correct answer is the last statement that if Tyrone stands at the top of a two meter high ramp, the potential energy of Tyrone will be greater in comparison to Ella.

Explanation:

The energy possessed by an object due to its position is termed as its potential energy. The formula for calculating potential energy is,

Potential energy = mgh, where m is mass, g is gravity, and h is height.

The respective masses of Ella and Tyrone as mentioned in the question is 56 Kg and 68 Kg. By looking at all the conditions as mentioned in the given options we get,

1) When both Ella and Tyrone are standing at the same ramp height:

Potential energy of Ella = 56*9.8*1.5 = 823.2J (The value of g is 9.8 m.s^-2)

Potential energy of Tyrone = 68*9.8*1.5 = 999.6J

Thus, when both are standing at the same ramp height, the potential energy of Tyrone will be more than Ella.

2) When Tyrone stands at the top of 1 m high ramp, and Ella at 1.5 m:

Potential energy of Ella = 56*9.8*1.5 = 823.2J

Potential energy of Tyrone = 68*9.8*1 = 666.4J

Thus, the potential energy of Tyrone will be less in comparison to Ella.

3) If Tyrone stands at the top of 2 m high ramp and Ella at 1.5 m:

Potential energy of Ella = 56*9.8*1.5 = 823.2J

Potential energy of Tyrone = 68*9.8*2 = 1332.8J

Thus, the potential energy of Tyrone will become more than Ella. Hence, the condition mentioned in the last statement is correct.

Answer from: natalie2sheffield

D) If Tyrone stands at the top of a 2 m high ramp, his potential energy will be greater than Ella’s.

Explanation:

On E d g e n u i t y

Answer from: Quest

$\frac{239}{94}pu+\frac{1}{0}n ====> \frac{y}{z}x+\frac{134}{54}xe+3\frac{1}{0}$

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137 subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54 subtract 54 from both sides.

40 = z

answer

$\frac{103}{40}x=\frac{103}{40}zr$

Answer from: Quest

Hbr dissociates to form h+ and br-ca(oh)2 dissociates to form ca2+ and 2oh-the h+ and oh- react to form waterassuming the reactants are dissolved in water, the net reaction is h+ + oh- —> h2oif you’re asked to show all components of the reaction, the complete reaction is 2hbr + ca(oh)2 —> cabr2 + 2h2o

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Ella has a mass of 56 kg, and Tyrone has a mass of 68 kg. Ella is standing at the top of a skateboar...

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