Answer: 44.57°C
Explanation:
The following can be deduced from the question:
Specific heat of water = 4.186 J/kg
From the question, we can infer that 625 × 4.186 joules of heat will be lost when there's a 1°C drop of water.
We then calculate the amount if degrees that it'll take to cool for 7.96 x 10⁴J. This will be:
= 7.96 × 10⁴ /(625 × 4.186)
= 79600/(625 x 4.186)
= 79600/2616.25
= 30.43°C
The final temperature will then be:
= 75.0°C - 30.43°C
= 44.57°C
Answer:
A
Explanation:
suddenly part of the force pulling to the left is gone.
and now the force pulling to the right is stronger.
so, the rope will move to the right. and that is also the direction of the net force.
"Acceleration" is the rate at which velocity changes.
So "constant velocity" is a very good definition of "no acceleration".
Choice-B is the correct one.
Answer: Longitudinal Waves
Explanation: The particles of the medium pass parallel to the course that the heart beat moves. This sort of wave is a longitudinal wave. Longitudinal waves are usually characterised through particle motion being parallel to wave movement. A valid wave traveling thru air is a classic example of a longitudinal wave.
Explanation:
Tornado chasers are meteorologist who study and predict weather pattern. This helps them in forecasting time and location of the storm. Never the less tornado's and hurricane's can be deadly as they are powerful wind and comes with a little warning. Storm chaser are in path of storm placing scientific equipment's and hoping to get some reading and then quickly they have to retreat themselves to safe place as even a small delay could cost them their lives. Thus,we can say that life of a tornado chaser would be exciting and dangerous.
