The reactivity of the alkali metals (group 1) increases as the atomic number increases.Which one of these statements is the correct explanation of this fact? Answer: 23) E As we…

In an a.c. generator driving a resistive load a coil is rotated slowly between the poles of amagnet. Which of the following will increase if the coil is rotated more…

Diagrams 1 to 5 show five types of levers. Diagram 6 shows the bones of the arm with arrows showing its movement up and down. Which two levers would be…

The energy in joules (E) associated with a photon of radiation is related to its frequency inhertz (f) by the equation: f =E/h where h is a constant (6.63
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The antidiuretic hormone (ADH) is produced by the pituitary gland and its target organ isthe kidney. ADH leaves the head in the jugular vein. In what order will the hormone…

Which one of the following is not equal to volts? Answer: 17) E You need to learn electricity equations which link power, current, voltage, energy and charge. Also, you need…

The diagram shows the inheritance of a condition in a family. (i) Identify the three individuals who must be heterozygous for this condition.(ii) What are the chances that a second…