The table shows four species: W: 6 protons, 6 neutrons X: 7 protons, 7 neutrons Y: 6 protons, 8 neutrons Z: 8 protons, 8 neutrons Which two species are isotopes of the same element?

A cricket ball of mass 0.15 kg moving at 20 m/s is stopped by a fielder in 0.1 s. What is the average force exerted by the fielder on the ball?

An astronaut has a mass of 60 kg on Earth. The gravity on the Moon is one-sixth of that on Earth. Taking g = 10 m/s² on Earth, what are the astronaut's mass and weight on the Moon?

A student records the potential difference (V) across a resistor and the current (I) through it: V (volt): 2, 4, 6, 8 I (ampere): 0.5, 1.0, 1.5, 2.0 Find the resistance of the resistor and the power consumed when V = 8 V.

Find the missing number in the grid: Row 1: 2, 4, 8 Row 2: 3, 9, 27 Row 3: 5, ?, 125