Answer:
a) 0.15rad/s
b) 0.26m/s
Explanation:
a) To find the angular speed it is necessary to consider the conservation of energy. after the rock is dropped by the girl, the kinetic energy of the rock must equal the rotational energy of the merry-go-round joint the girl. In other words you have
rotational energy and kinetic energy will given by:
I: rotational inertia
w = angular speed
m: mass of the block
m_g: mass of the girl
R: radius of the merry-go-round
By replacing you have:
the angular speed is 0.15rad/s
b) the linear speed is given by:
hence, the linear speed of the girl is 0.26m/s
The statements that describe a benefit of the scientific method are as follows:
- It gives scientists a standardized way to approach a problem.
- It reduces bias and judgment from personal experiences.
- It gives scientists a common vocabulary for sharing information.
Thus, the correct options are B, C, and D.
<h3>What is the Scientific method?</h3>
The scientific method may be defined as a strategy of research in which a problem is recognized, relevant data is collected, a conjecture is composed of this data, and the assumption is empirically tested to determine the outcome of particular research.
The scientific method never explains or provides an answer to any question immediately because it consists of a scripted format with certain parameters.
The scientific method uses the identical vocabulary for sharing information with one another in particular terminology.
Therefore, it is well described above.
To learn more about the Scientific method, refer to the link:
brainly.com/question/17216882
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As per the gas equation:
P = ( n ) ( R ) ( T ) / ( V )
n = number of moles
R = Gas Constant = 0.08206 atm - L / gmol - K
T = Temperature in Kelvin
V= Volume in meters
P = ( n ) ( R ) ( T ) / ( V )
P = {0.55 gmol x 0.08206 atm - L / gmol - K x 305 K }/ 8.5 L
P = 1.62 atm
The product of mass and velocity is momentum. P=mv. The 'P' in the equation stands for momentum.