The lamp has a resistance of 10Ω Each resistor has a resistance of 10Ω (resistors are connected in parallel)
What is the total resistance of the circuit?

Tick one box

Between 20 and 30Ω?
Exactly 20Ω?
Exactly 30Ω?
Less than 20Ω?

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?

The voltmeter reads 117 v and ammeter reads 0.13 a .if the resistance of ammeter and voltmeter are 9 kilo ohm and 0.015 ohm respectively ,find the value of r. 3marks