Field Theory Answers

 The rate-determining step of a reaction that governs the experiment is given by the equation S₂O₈^2-_(aq) + 3I^-_(aq) → SO₄^2-_(aq) + I₃^-_(aq). If the rate constant of the reaction at 20⁰C and 60⁰C is exactly nx10^-5s^-1 where n is the order of the reaction respectively. Find the activation energy?

Which of these physical quantities has base units kgm²s^-2?

A. Pressure B. Energy C. Power D. Momentum

Given three vectors A=24i +33j, B= 55i - 12j and C = 2i+ 43j.

(a) find the mangnitude of each vectors.

(b) write an expression for the vector difference A - C.

(d) in a vector diagram show vector A+B , and A-B, and also show that your diagram agrees

When a heating coil is immersed in melting ice, the ice melts at a rate of 10grams per minute. If the current in the coil is doubled while its resistance remains constant, the mass of ice that will melt per minute is?

A block of mass 1kg is suspended freely by a thread. A bullet of mass 3kg is fired horizontally at the block and it becomes embedded in it. The block swings to one side using a vertical distance of 50cm. With what speed did the bullet hit the block?

A 10.6-kg object oscillates at the end of a vertical spring that has a spring constant of 2.05×104

 N/m. The effect of air resistance is represented by the damping coefficient b = 3.00 N ? s/m. (a) Calculate the  frequency of the damped oscillation. (b) By what percentage does the amplitude of the oscillation decrease in each cycle? (c) Find the time interval that elapses while the energy of the system drops to 5.00% of its initial value.

(a) What is the average translational kinetic energy of a oxygen molecule at STP?

 (b) What is the total translational kinetic energy of 1.0 mol of molecules at 25°C?

When it rains vertically downwards, for man walking on a horizontal road, the ratio of the velocity of rain as it appears and actual velocity is found to be 2:root3. The angle made by an umbrella with the horizontal is

The potential energy of a satellite orbiting the earth is-X joule the energy required to throw it out of the earth's gravitational field is