Answer:
I think the answer will be water ,sorry if ik wrong
Answer:
B. the air pressure decreases
Explanation:
As elevation increases, there is less overlying atmospheric pressure mass, so that atmospheric pressure decreases with increasing elevaton.
I will assume that you want to know if the driver can stop before hitting the obstacle or not.
First step is to use the reaction time in order to know how far can she go before her motion starts to slow:
distance = velocity x time = 20 x 0.5 = 10 m
Thus, the driver has 50 - 10 = 40 m to stop before colliding
Second step is to calculate the distance that the driver requires to stop using the rules of velocity and distance:
1- velocity = acceleration x time
20 = 6t ..............> thus, time = 3.334 seconds
2- distance = 0.5 x a x t^2 = 0.5 x 6 x (3.334)^2 = 33.3466 m
From the previous calculations, we can see that the driver has 40 m to stop and she needs only 33.3466 m to stop based on the given parameters. This means that she can stop before collision.
The image is missing, so i have attached it.
Answer:
Correct answer is Option C - Ticking clock
Explanation:
Sound waves are formed when a vibrating object makes the encompassing medium to vibrate. Where the medium is the material in which the wave goes through. Sound waves comprise of zones of high and low weight called compressions and rarefactions, separately.
Now, in this question, the image given is one of compression and rarefactions. Looking at the options given, the correct option that produces such a wave is Ticking clock because Sound energy travels through air in waves and when an alarm clock rings, nearby air molecules vibrate. The air molecules jiggle about and cause neighbouring molecules to vibrate as well, thereby starting a wave of energy that travels out from the clock. The wave of sound travels in a pattern of compressions (where the air molecules are squeezed together) and rarefactions (where the air molecules are stretched apart).
Answer:
are chemical processes and not nuclear processes. Nuclear reactions do indeed occur in the human body, but the body does not use them. Nuclear reactions can lead to chemical damage, which the body may notice and try to fix.