Answer:
20°C
Explanation:
Heat gained by the colder water = heat lost by the warmer water
m₁ C (T − T₁) = m₂ C (T₂ − T)
m₁ (T − T₁) = m₂ (T₂ − T)
(500) (T − 10) = (100) (70 − T)
5 (T − 10) = 70 − T
5T − 50 = 70 − T
6T = 120
T = 20
The final temperature is 20°C.
We're adding two vectors here. The first is 300 Newtons to the right, which we can write as (300, 0), meaning 300 to the right, 0 up.
The second is 300 at let's say a 45 degree angle down. For the components we have an isosceles right triangle with hypotenuse 300, so the components are both magnitude 300/√2 = 150√2. So we can write this vector (150√2, -150√2), the negative sign because it points down in the y direction.
Adding is componentwise. The resulting force is (300+150√2, -150√2).
That has square magnitude
r² = (300+150√2)² + (-150√2)² = 150² ( (2+√2)² + (√2)² )
= 150²( (6 + 4√2) + 2)
= 300²(2+√2)
so
r = 300 √(2+√2) Newtons
That's the answer; I'm not sure if your class expects a calculator approximation, which is 554.3 Newtons.
yes because your mass doesn't change but your weight can
ex- if you travel to Saturn your weight would change but your mass would stay the same
Answer:
The correct answer is option ( D ) Yoga
Explanation:
hope it helps you dear :)
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