Answer:
A) Average speed = 18.75 m/s
B) More time is spent at 15 m/s than at 25 m/s.
Explanation:
Let the first distance be d1 and the second distance be d2.
We are given;
d1 = 10 km = 10000 m
d2 = 10 km = 10000 m
Speed; v1 = 15 m/s
Speed; v2 = 25 m/s
Now, the formula for distance is; Distance = speed x time
Thus:
d1 = v1 x t1
t1 = d1/v1 = 10000/15 = 666.67 seconds
Also,
d2 = v2 x t2
t2 = d2/v2 = 10000/25 = 400 seconds
Average speed = total distance/total time = (10000 + 10000)/(666.67 + 400) = 18.75 m/s
From earlier, since t1 = 666.67 seconds and t2 = 400 seconds, then;
More time at 15 m/s than at 25 m/s.
Answer:
While the popularity of athletic footwear or “sneakers” has been widely assessed within academic literature, few studies to date have examined the influence of a specific sneaker subculture called “Sneakerheads”. Moreover, the brand preferences and brand identities that may exist within the Sneakerhead subculture have not been extensively examined. To address this gap in the research, semi-structured interviews were conducted with 12 male, self-identified Sneakerheads. The main goal of the research was to explore the Sneakerhead culture, while gaining an understanding of brand preferences, practices, and group identity factors. The Social Identity Theory was employed as the theoretical framework for this research. Qualitative analysis of the interviews revealed the following three topical areas: (1) , (2) , and (3) Findings regarding the unique culture of Sneakerheads indicate a clear sense of group identity as it relates to motivations, behaviors, and brand identity within the Sneakerhead community. Moreover, the findings of this study further define the lifestyle of a Sneakerhead and shed light on their unique behaviors and practices within the culture.
Explanation:
Answer:
The new velocity of the string is 100 centimeters per second (1 meter per second).
Explanation:
The speed of a wave through a string (
), in meters per second, is defined by the following formula:
(1)
Where:
- Tension, in newtons.
- Length of the string, in meters.
- Mass of the string, in kilograms.
The expression for initial and final speeds of the wave are:
Initial speed
(2)
Final speed
(3)
By (2), we conclude that:
If we know that 
, then the new speed of the wave in the string is 
.
Normal force, weight, Kinetic friction, and air resistance are a few I think of the top of my head.
I hope this helps
the position that has least kinetic energy is option D
