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  1. R

    Physics: Post your doubts here!

    How can the acceleration be 0.20ms^-2 when the speed is still 10ms-1?
  2. R

    Physics: Post your doubts here!

    Do we always use the resultant force only to calculate power, in the formula p=fv? And, in the first question the car later accelerates. Wouldnt that change its speed so it's no longer 10?
  3. R

    Physics: Post your doubts here!

    Its D, 4.0 kW. The correct second question options: A. 5.0×10^4 N B. 1.5×10^5 N C. 2.0×10^5 N D. 2.5×10^5 N 1.5×10^5 N is the correct answer.
  4. R

    Physics: Post your doubts here!

    Q. A car of mass 1.2×10^3 kg travels along a horizontal road at a speed of 10 m/s. It then accelerates at 0.20 ms-2. At the time it begins to accelerate, the total resistive force acting on the car is 160 N. What total output is developed by the car as it begins the acceleration? A. 0.80 kW B...
  5. R

    Chemistry: Post your doubts here!

    Hydrogen Iodide dissociates into H2 and I2. 2HI (g) <-----> H2 (g) + I2 (g) (the reaction goes in both directions) In an experiment, b mol of hydrogen iodide were put into a sealed vessel at pressure p. At equilibrium, x mol of the hydrogen iodide had dissociated. Which expression for Kp is...
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