Explanation:
i really didn't understand the question
im soo so sorry
Answer:
4.5 meters
Explanation:
3 meters to his friend's house. +3
Halfway back. +1.5
3+1.5
=4.5
4.5 meters in total
Answer:
New length = 10.2 m
Explanation:
Let ΔL = change in length
ΔT = change in the temperature
L(0) = intial length
α = coeffient of linear expansion
Then
ΔL = αL(0)ΔT
=(2.4×10^-5)(10)(100-20)
=0.0192 m
New length = L(0) + ΔL
= 10 + 0.0192
= 10.2 m
Answer: heat
Explanation: An increase in the temperature of a liquid causes an increase in the average speed of its molecules. As the temperature of a liquid increases, the molecules move faster thereby increasing the liquids kinetic energy.
Two<span> pucks moving on a frictionless air table are about to </span>collide<span>, as </span>shown<span>. The 1.5 </span>kg<span> puck is moving</span>directly<span> east at 2.0 </span>m/s<span>. </span>Two objects<span> of </span>mass 0.2 kg<span> and </span>0.1 kg<span>, </span>respectively<span>, </span>move parallel<span> to the </span>x-axis<span>,as </span>shown<span> on </span>Immediately after<span> the </span>collision<span>, the </span>y-component<span> of the </span>velocity<span> of the </span>0.2 kg object<span> is </span>1 m/s<span> upward.</span>
