Paper 1, Higher

Calculate the kinetic energy of a 1200 kg object moving at 15 m/s.

Calculate the current in a 4 Ω resistor connected to a 12 V supply.

Calculate the density of an object with mass 540 g and volume 200 cm³.

Compare alpha, beta and gamma radiation.

Calculate the kinetic energy of a 0.16 kg object moving at 30 m/s.

Calculate the current in a 46 Ω resistor connected to a 230 V supply.

Calculate the density of an object with mass 2.7 kg and volume 0.001 m³.

A sample has an activity of 800 Bq. Calculate its activity after 3 half-lives.

Calculate the kinetic energy of a 75 kg object moving at 8 m/s.

Calculate the current in a 1.5 Ω resistor connected to a 6 V supply.

Describe how to measure the density of an irregular stone.

A sample has an activity of 6400 Bq. Calculate its activity after 4 half-lives.

Calculate the gain in gravitational potential energy when a 60 kg object is lifted 12 m. (g = 9.8 N/kg)

A charge of 360 C flows in 120 s. Calculate the current.

Calculate the energy needed to change the state of 0.5 kg of a substance with specific latent heat 334,000 J/kg.

Complete the decay equation for uranium-238 decaying by alpha emission to thorium (Th).

Calculate the gain in gravitational potential energy when a 2.5 kg object is lifted 4.2 m. (g = 9.8 N/kg)

A charge of 45 C flows in 15 s. Calculate the current.

Calculate the energy needed to change the state of 0.2 kg of a substance with specific latent heat 2,260,000 J/kg.

Explain the difference between contamination and irradiation.

A motor transfers 450 J of useful energy for every 600 J supplied. Calculate its efficiency.

Two resistors of 4 Ω and 6 Ω are connected in series to a 12 V battery. Calculate the current and the potential difference across the 4 Ω resistor.

Explain why the temperature of ice stays at 0 °C while it is melting, even though energy is being supplied.

Explain why gamma emitters are used as medical tracers but alpha emitters are not.

A motor transfers 36 J of useful energy for every 120 J supplied. Calculate its efficiency.

Two resistors of 10 Ω and 15 Ω are connected in series to a 12 V battery. Calculate the current and the potential difference across the 10 Ω resistor.

Use the particle model to explain why the pressure of a gas increases when it is heated in a sealed container.

Describe the process of nuclear fission and how a chain reaction occurs.

A device transfers 36000 J in 120 s. Calculate its power.

Explain why the total resistance of two resistors in parallel is less than the resistance of either one.

A gas at 100 kPa has volume 3.0 m³. It is compressed (or expands) at constant temperature to 1.5 m³. Calculate the new pressure.

Explain why nuclear fusion is difficult to achieve on Earth.

A device transfers 1.8e+06 J in 3600 s. Calculate its power.

Describe how to investigate how the resistance of a wire depends on its length.

A gas at 120 kPa has volume 2.0 m³. It is compressed (or expands) at constant temperature to 5.0 m³. Calculate the new pressure.

Describe how beta decay changes the nucleus.

A 0.5 kg ball is dropped from 5.0 m. Calculate its speed just before it hits the ground, ignoring air resistance. (g = 9.8 N/kg)