An air track cart with mass m and speed v moving along an air track collides with a stationary cart with a mass m/3. After the collision the first cart has a speed v/2. What is the speed of the second cart?
What will be an ideal response?
3v/2
Physics & Space Science
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An automobile engine operates with an overall efficiency of 12%. How much energy is delivered as waste heat (in gallons of gasoline) for each 10 gallons of fuel burned?
A. 1.2 B. 8.8 C. 6.5 D. 4.7 E. 7.5
Physics & Space Science
A block is dragged without acceleration in a straight-line path across a level surface by a force of 6 N. What is the force of friction between the block and the surface?
A) less than 6 N B) 6 N C) more than 6 N D) need more information
Physics & Space Science
A closed vial of gas is heated with a flame.
C. Consistent D. Inconsistent
Physics & Space Science
Gas in a container increases its pressure from 1 atm to 3 atm while keeping its volume constant. Find the work done (in J) by the gas if the volume is 5 liters
a. 0 b. 3 c. 5 d. 15 e. 15 × 10^2
Physics & Space Science