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3 years ago

Which is NOT a component of a nucleotide?

Physics

1 answer:

Nitella [24]3 years ago

6 0

Answer:

Lysine

Explanation:

A nucleotide is a combination of a nitrogen base, pentose sugar, and phosphate. Adenine, Guanine (purines) and Thymine (pyrimidine) are nitrogen base. Lysine is the amino acid.

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What is NOT a principle of genetics?

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3 years ago

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A 1.2 kg basketball is thrown upwards. What is the potential energy of the basketball at the top of its path if it reaches a hei

Dahasolnce [82]

Answer:

Answer is 183.6 J

Explanation:

Using the Physics reference sheet the formula for Potential energy is

(mass) x (gravity) x (height)

Mass= 1.2

Gravity I used is 9.81 (use 10 to get the answer most schools use)

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Differentiate between a derived quantity and a derived unit.

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Explanation:

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3 years ago

Determine the MA based on the diagram below.

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There are two things that you should remember while dealing with the "Lever Mechanical Advantage" problems:

1) The Effort Arm;
2) The Resistance Arm.

Some books label the Effort Arm as in-lever arm and the Resistance Arm as out-lever arm. (Physics Jargon that you need to remember in order to solve problems)

The Effort Arm is that "part" of the lever where the force can be applied. The Resistance Arm is where some mass is placed. In the diagram, as you can see, the mass is placed on one arm of the lever. Therefore, it is the Resistance Arm.

Now the formula for the "Mechanical Advantage(MA)" is:
$MA = \frac{L_{e} }{ L_{r} }$

Where $L_{e}$ is the length of the Effort Arm(the subscript "e" stands for Effort), and $L_{r}$ stands for the length of the Resistance Arm(here "r" stands for Resistance).

Plug in the values:

$L_{e}$ = 15m.
$L_{r}$ = 7m.

Therefore, $L_{e}$ / $L_{r}$ = 15/7 = 2.143 = MA

The correct answer is option C(2.14).

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3 years ago

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A 70.0-kg person throws a 0.0430-kg snowball forward with a ground speed of 32.0 m/s. A second person, with a mass of 58.5 kg, c

Aleks04 [339]

Answer:

The velocities of the skaters are $v_{1} = 3.280\,\frac{m}{s}$ and $v_{2} = 0.024\,\frac{m}{s}$ , respectively.

Explanation:

Each skater is not under the influence of external forces during process, so that Principle of Momentum Conservation can be used on each skater:

First skater

$m_{1} \cdot v_{1, o} = m_{1} \cdot v_{1} + m_{b}\cdot v_{b}$ (1)

Second skater

$m_{b}\cdot v_{b} = (m_{2}+m_{b})\cdot v_{2}$ (2)

Where:

$m_{1}$ - Mass of the first skater, in kilograms.

$m_{2}$ - Mass of the second skater, in kilograms.

$v_{1,o}$ - Initial velocity of the first skater, in meters per second.

$v_{1}$ - Final velocity of the first skater, in meters per second.

$v_{b}$ - Launch velocity of the meter, in meters per second.

$v_{2}$ - Final velocity of the second skater, in meters per second.

If we know that $m_{1} = 70\,kg$ , $m_{b} = 0.043\,kg$ , $v_{b} = 32\,\frac{m}{s}$ , $m_{2} = 58.5\,kg$ and $v_{1,o} = 3.30\,\frac{m}{s}$ , then the velocities of the two people after the snowball is exchanged is: