8 An electric kettle contains 600 g of water at 20°C. The heater in the kettle operates at 240 V. The

specific heat capacity of water is 4200 J/(kg°C).

The current in the heater is 12 A.

(a) Calculate the time taken for the temperature of the water to rise to 100 °C.

time =

[4]

Choose each of the settings that follow and list them below do it ill mark brainliest first object= position= speed= acceleration= second object= position= speed= acceleration=

The discovery of the electron as a subatomic particle was a result of

Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?