1. A sample of an ideal gas goes through the process shown in Figure. From A to B, the process -0 is adiabatic; from B to C, it is isobaric with 100 kJ of energy entering the system by hean From Chi),
the process is isothermal; from D to A, it is isobaric with 150 kJ of energy leaving the system by heat.
Determine AU = UB - UA
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Who was the first scientist to measure speed as distance over time?

Amass m = 74 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius r = 18.4 m and finally a flat straight section at the same height as the center of the loop (18.4 m off the ground). since the mass would not make it around the loop if released from the height of the top of the loop (do you know why? ) it must be released above the top of the loop-the-loop height. (assume the mass never leaves the smooth track at any point on its path.) 1. what is the minimum speed the block must have at the top of the loop to make it around the loop-the-loop without leaving the track? 2. what height above the ground must the mass begin to make it around the loop-the-loop? 3. if the mass has just enough speed to make it around the loop without leaving the track, what will its speed be at the bottom of the loop? 4. if the mass has just enough speed to make it around the loop without leaving the track, what is its speed at the final flat level (18.4 m off the ground)? 5. now a spring with spring constant k = 15600 n/m is used on the final flat surface to stop the mass. how far does the spring compress?

What is the coldest temperature ever recorded in san antonio?