An object shaped as a hemisphere rests with its flat surface on a table. The object has radius r and density ρ.

Q#33 ( Past Exam Paper – March 2019 Paper 12 Q14 ) An object shaped as a hemisp… Read more An object shaped as a hemisphere rests with its flat surface on a table. The object has radius r and density ρ.

Four solid steel rods, each of length 2.0 m and cross-sectional area 250 mm2, equally support an object weighing 10 kN.

Q#10 ( Past Exam Paper – November 2016 Paper 12 Q22 ) Four solid steel rods, ea… Read more Four solid steel rods, each of length 2.0 m and cross-sectional area 250 mm2, equally support an object weighing 10 kN.

An aircraft is at rest at one end of a runway which is 2.2 km long. The aircraft accelerates along the runway with an acceleration of 2.5 m s-2

Q#33  ( Cambridge International AS and A Level Physics Coursebook – 2 nd  editi… Read more An aircraft is at rest at one end of a runway which is 2.2 km long. The aircraft accelerates along the runway with an acceleration of 2.5 m s-2

(a) The first law of thermodynamics may be expressed in the form ΔU = q + w. (i) State, for a system, what is meant by: 1. +q

Q#9 ( Past Exam Paper – June 2019 Paper 42 Q2 ) (a)  The first law of thermodyn… Read more (a) The first law of thermodynamics may be expressed in the form ΔU = q + w. (i) State, for a system, what is meant by: 1. +q

The variation with temperature of the resistance RT of a thermistor is shown in Fig. 6.1. The thermistor is connected into the circuit of Fig. 6.2.

Q#34 ( Past Exam Paper – November 2010 Paper 22 Q6 ) The variation with tempera… Read more The variation with temperature of the resistance RT of a thermistor is shown in Fig. 6.1. The thermistor is connected into the circuit of Fig. 6.2.