Whole Course Recall (10)

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What is the value of gravitational potential energy at A one if a skier has a mass of 75 kg has a mass of 350 kg? (g=9.81m/s2)

What is the velocity of the skier at point C? (g=9.81m/s2, give your answer to 2dp)

If the skier comes to a complete stop between points C and D, what is the braking force? (g=9.81m/s2, give your answer to 2dp)

The table below shows the thermal conductivity of different materials. Which material would make the best insulator?

• Graphite
• Sulfur
• Cotton
• Cotton wool

Which type of energy transfer is most efficient where particles are closest together?

• Conduction
• Convection
• Radiation

What allows metal to conduct electricity?

• The particles are close together
• Covalent structure
• Delocalised electrons
• Sea of free protons

Which measuring component do we put in parallel to the component being tested?

• Ammeter
• Voltmeter
• Joulemeter

Which component does this symbol represent?

• LDR
• LED
• Diode
• Thermistor

What is the unit of resistance?

• Coulomb
• Ohm
• Tesla
• Volts