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Uranium-234 disintegrated to form Thorium-230 by emitting

The change in mass of fuel during a nuclear reaction is 2.0 x 10-27 kg. Calculate the amount of energy released. (Speed of light = 2.0 x 108ms-1)

Nuclear fusion is not used as a source of enegy because

Using the circuit diagram above. Calculate the total charge in the circuit

Using the circuit diagram above. Calculate the potential difference across the capacitors in parallel

If the volume of a gas increases steadily as the temperature decreases at constant pressure, the gas obeys

In Homes, electrical appliances and lamps are connected in parallel because

In an A.C circuit, the ratio of r.m.s value to peak value of current is

Two resistors 5\Omega and 10\Omega are arranged first in series and later in parallel to a 24V source, the ratio of total power dissipated in the series and parallel arrangements respectively is

Use the diagram above as a guide to carry out the following experiment. Trace the outline ABCD of the rectangular glass prism on the drawing paper provided. Remove the prism. Select a point N on AB such that AN is about one-quarter of AB. Draw the normal LNM. Also, draw a line RN to make an angle \(\theta\) = 75^\circ with AB at N. Fix two pins at \(P_1\) and \(P_2\) on line RN. Replace the prism on its outline. Fix two other pins at \(P_3\) and \(P_4\) such that they appear to be in a straight line with the images of the pins at \(P_1\) and \(P_2\) when viewed through the prism from DC. (vi) Remove the prism and the pins at \(P_3\) and \(P_4\). Draw a line to join \(P_3\) and \(P_4\) Produce line \(P_4\) \(P_3\) to meet the line DC at O. Draw a line to join NO. Measure and record the values of MO and NO. Evaluate \(\theta\) = \(\frac{MO}{NO}\) and cos \(\theta\). Repeat the procedure for four other values of \(\theta\) = 65^\circ 55^\circ, 45^\circ, and 35^\circ. In each case, evaluate \(\theta\) and cos \(\theta\). Tabulate your readings. Plot a graph with cos \(\theta\) on the vertical axis and \(\theta\) on the horizontal axis. Determine the slope, s, of the graph. State two precautions taken to ensure accurate results (b)i. State Snell's law of refraction. ii. Calculate the critical angle for the glass prism used in the experiment above if its refractive index is 1.5.

A stone projected horizontally from the top of a tower with a speed of 4 ms\(^{-1}\) lands on the level ground at a horizontal distance of 25 m from the foot of the tower. Calculate the height of the tower. = 10 ms\(^{-2}\)]

(a) Explain diffusion. (b) Give one reason why the rate of diffusion is higher in gases than in liquids at the same temperature.

State: (a) the difference between plane polarized light and ordinary light; (b) two uses of polaroids.

(a). State: (a) two applications of electrolysis in an industry (b) one application of electrolysis in a school laboratory.

In fig. la and fig.1 b above, Ida and Wb represent the respective loads on a spring placedtiear a 30 cm rule, when in air and when in water: (a) Identify the force causing a shrink in the spring in fig.(b). (b) Given that the force constant of the spring is 2.0 x 10\(^{11}\) Nm\(^{-1}\), calculate the work done by the force in causing the shrink.