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3 years ago

Which of the following is the number 0.0000302 written in scientific notation?

Physics

1 answer:

lana [24]3 years ago

7 0

Answer:

3.02 x 10⁻⁵ unit

Explanation:

The numbers written in scientific notations have some rules to follow.
If the scientific values are expressed in exponential powers of 10, the integer value should be between 1 and 9. The respective powers will be added to the exponential order.
The scientific notation is the convenient form of expressing the scientific values that could be easily used in the calculations.
The digits after the decimal point are used according to the resolution of the scientific values.

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A person is standing on a level floor. His head, upper

BabaBlast [244]

Answer:

$y_{cg} = 1.03 m$

Explanation:

Given data:

weigh (head+arms + head) w_1 = 438 N

centre of gravity y_1= 1.28 m

weigh (upper leg) w_2 = 144 N

Center of gravity y_2 = 0.760 m

weigh ( lower leg + feet) = 87 N

centre of gravity = y_3 = 0.250 m

location of center of gravity $= \frac{w_1 y_1 + w_2 y_2 + w_3 y_3}{w_1 +W_2 +w_3}$

$y_{cg} = \frac{438 \times 1.28 + 144\times 0.760 + 87 \times 0.250}{438+144+87}$

$y_{cg} = 1.03 m$

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3 years ago

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MArishka [77]

Explanation:

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4 years ago

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zalisa [80]

Angular momentum is conserved in the above examples such as the ice skater, the torque or the rotating effect of the force is almost equal to zero because there is negligible friction between the skates and the ice.

<h3>What is principle of conservation of angular momentum?</h3>

The principle of conservation of angular momentum states that the total angular momentum acting on an object is constant, provided there is no external torque acting on the object.

Angular momentum of a system is conserved as long as there is no net external torque acting on the system.

<h3>Examples of conservation of angular momentum</h3>

the spinning ice skater
someone spinning in an office chair
a child spinning on roller coaster

Thus, angular momentum is conserved in the above examples such as the ice skater, the torque or the rotating effect of the force is almost equal to zero because there is negligible friction between the skates and the ice.

Learn more about angular momentum here: brainly.com/question/7538238

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2 years ago

Robert Hooke was a famous scientist who experimented with springs (metal coils). He found that the farther you stretched the spr

deff fn [24]

Answer:

B. the force of the spring pulling on you

Explanation:

The independent variable is the variable that is being controlled. In this case, the distance the spring is stretched.

The dependent variable is the variable that is being measured. In this case, the force of the spring pulling back.

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3 years ago

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