ENEM Brazil · Natural Sciences and its Technologies

Physics in Everyday Contexts

20 practice questions, each with the answer and an explanation.

Practise Physics in Everyday Contexts now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 20 questions

  1. A bus travels at 90 km/h. What is this speed in metres per second?
  2. A 1,000 W appliance works for 2 hours. How much energy does it use?
  3. Which energy source used in Brazil is renewable?
  4. A 220 V line feeds an electric heater with resistance 55 ohms. What current flows through it?
  5. A person of mass 60 kg is on Earth where g is about 10 m/s2. What is the weight?
  6. On a sunny day a breeze blows from the sea toward the land. Which process explains it?
  7. A straw in a glass of water looks bent at the water surface. Which phenomenon explains this?
  8. A 2 kg object moves at 3 m/s. What is its kinetic energy?
  9. Two 20-ohm resistors are connected in parallel. What is the equivalent resistance?
  10. A force of 200 N acts perpendicularly on an area of 0.5 square metres. What is the pressure?
  11. Why does sound usually travel faster in steel than in air?
  12. An object has density 0.8 g/cm3 and is placed in water (1 g/cm3). What happens?
  13. How much heat is needed to raise 2 kg of water from 20 to 70 degrees Celsius? (c = 4.2 kJ per kg per degree)
  14. A car moving at 20 m/s brakes with constant deceleration and stops after 5 s. How far does it travel while braking?
  15. A pump lifts 600 kg of water through 10 m in 60 s (g = 10 m/s2). What is the useful power of the pump?
  16. What is the role of a fuse in a household circuit?
  17. What causes the seasons on Earth?
  18. Which statement correctly describes the greenhouse effect?
  19. A swimmer pushes the water backwards and moves forwards. Which principle explains this?
  20. A lamp consumes 100 W of electrical power and gives 20 W of light. How much energy does it waste as heat during one hour?

Keep practising

More ENEM Brazil topics

All ENEM Brazil practice →

Ready for the full ENEM Brazil test?

Take a mock testENEM Brazil hub
Physics in Everyday Contexts practice questions | GetMyMockTest