Answer:b)1770 kWh
Explanation:
Given
volume of water
Temperature rise
also 1 kg mass is approximately is 1 gallon
therefore 40,000 gallon is equivalent to 3.8\times 40000 kg
heat Required to raise temperature is
Answer:
Look below
Explanation:
Units are very important. Let's say we were building an apartment. We used meters for every measurement except for 1 support where we used centimeters. This could lead to the collapse of the whole structure as the measurements were wrong. 100 meters and 100 centimeters are very different.
The correct answer should be :
D) the area where the magnetic force is exerted.
Hope this helps,
Davinia.
Answer:
a) 1.76 m/s²
b) 75.5°
Explanation:
1. linear(tangential) acceleration a:
a = 0.44m/s²
2. speed v:
v(t) = at
3. radial acceleration α on a track with radius r:
α(t) = v²/r = (at)²/r
α(18)= (0.44*18)²/37 = 1.7 m/s²
4. total acceleration |a|:
|a| = √(a²+α²)=1.76m/s²
5. angle Ф with v:
tanФ =(α/a) => Ф = 75.5°