Which of the following criteria can help Linda classify gases as greenhouse gases?
2 answers:
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Answer:
v= 3.18 m/s
Explanation:
Given that
m= 150 g = 0.15 kg
M= 240 g = 0.24 kg
Angular speed ,ω = 150 rpm
The speed in rad/s
ω = 15.7 rad/s
The distance of center of mass from 150 g
r= 20.30 cm
The speed of the mass 150 g
v= ω r
v= 20.30 x 15.7 cm/s
v= 318.71 cm/s
v= 3.18 m/s
Answer:
It takes the train 7.5 seconds to reach top speed
The train travels 112.5 meters before it reaches its top speed
Explanation:
The Metro Rail makes a stop at NRG Stadium to pick up some Texans
fans after the game
After all the passengers board, the train accelerates at a rate of 4 m/s²
to a top speed of 30 m/s
We need to find the train takes how many seconds to reach the
top speed
Given is:
→ The train start from rest, then its initial speed u = 0
→ It acceleration a = 4 m/s²
→ Its top speed v = 30 m/s
To find the time we can use this rule;
→
→ seconds
<em>It takes the train 7.5 seconds to reach top speed</em>
<em></em>
Now we need to find how far the train travels before reaches top speed
We can use this rule;
→ v² = u² + 2as, where s is the distance
→ v = 30 m/s , u = 0 , a = 4 m/s²
Substitute these values in the rule
→ (30)² = 0 + 2(4) s
→ 900 = 8 s
Divide both sides by 8
→ s = 112.5 m
<em>The train travels 112.5 meters before it reaches its top speed </em>