Answer:
C. The facial feedback theory
Explanation:
The facial feedback theory as postulated by William James and connects back to the famous Charles Darwin talks about how facial expressions stimulate our emotional state of being. Based on this theory, the emotional experiences we have are determined by the looks on our faces.
According to the question, smiling at an event makes you enjoy it is an example of what the The facial feedback theory is explaining. Furthermore, smiling, which is a facial expression causes or stimulates an emotional state of enjoyment in that event.
A. Displacement
O B. Time
C. Acceleration
D. Average speed
To calculate velocity in Physics, the two necessary measurements are displacement and time. Velocity is the speed in a specified direction, determined by dividing displacement by time.
In the field of Physics, the two measurements needed to calculate the velocity of an object are displacement and time. Velocity refers to the speed in a given direction and is calculated by dividing displacement (which gives direction information and distance) by the time it takes to move that distance. For example, if an object traveled 100 meters to the north in 20 seconds, the velocity would be 5 meters per second towards the north.
#SPJ3
B. its completely black color
C. its existence beyond the visible spectrum
D. its inevitable creation of a totally destructive Big Crunch
Nucleosynthesis began when _____ and ended when _____.
A. the Big Bang occurred; the Big Crunch occurred
B. nuclear reactions could first occur; matter had condensed into galaxies and stars
C. the cosmic microwave background radiation formed; dark energy replaced it as the dominant energy form
D. the universe had cooled enough for atoms to combine; protons and neutrons were too far apart to form nuclei
B. a force results in a change of momentum
Answer:
B
Explanation:
You need a specific force to change the momentum of something.
Hope this helps!
Water pipes can burst during very cold winters due to a phenomenon known as "freeze-thaw cycle." When temperatures plummet, water inside the pipes can freeze, causing it to expand and exert pressure on the pipe walls.
Water molecules expand as they freeze, creating a buildup of pressure within the pipe. Pipes are designed to withstand a certain amount of pressure, but when it exceeds their capacity, they can rupture or burst. Furthermore, pipes made of materials like metal or plastic can become brittle in extremely cold temperatures. The cold causes the material to contract, reducing its flexibility and making it more susceptible to cracks and breaks. This can weaken the structural integrity of the pipe, making it more likely to rupture when subjected to the internal pressure from the frozen water. Preventing pipe bursts during cold winters involves insulating pipes, maintaining a constant flow of water, and keeping indoor spaces adequately heated to mitigate the freezing and expansion of water within the pipes.
Additionally, stagnant water in pipes is more prone to freezing than flowing water. Pipes that aren't used frequently, like those in less-used areas of a building, may freeze more easily during extended cold periods.
To know more about freeze-thaw cycle:
#SPJ1
Answer : The frequency decreases by a factor of 2.
Explanation :
Given that the wave travels at a constant speed. The speed of the wave is given as :
Where
υ is the frequency of the wave
and λ is the wavelength of the wave.
In this case, the speed is constant. So, the relation between the frequency and the wavelength is inverse.
If the wavelength increases by a factor of 2, its frequency will decrease by a factor of 2.
Hence, the correct option is (A) " The frequency decreases by a factor of 2 ".
force constant (spring constant) of the spring?
A) 39 N/m
B) 22 N/m
C) 46 N/m
D) 31 N/m