D. Fields: 244 IB Physics HL practice questions

Object A of mass $m$ is lifted through a height $h$. Object B of mass $2m$ is lifted through a height $4h$. The gravitational field is constant over the height interval. What is the ratio:

$$\frac{\text{work done against gravity on object B}}{\text{work done against gravity on object A}}$$

Which of the following is the correct way of connecting an ammeter and of connecting a voltmeter in a circuit designed to measure the characteristics of a thermistor?

The centres of two planets are separated by a distance $R$. The gravitational force between the two planets is $F$. What will be the force between the planets when their separation increases to $3R$?[1]

The gravitational field strength at a point X in a gravitational field is defined as the force

A satellite undergoes one circular orbit of the Earth every 24 hours.

What is the angular velocity of the satellite?

The gravitational field strength at the surface of the Earth is often taken to be $9.8 \text{ N kg}^{-1}$.

The use of this value to calculate the weight of an object above the surface of the Earth is

A particle with a charge $ne$ is accelerated through a potential difference $V$.

What is the magnitude of the work done on the particle?

An object of mass $m$ released from rest near the surface of a planet has an initial acceleration $z$. What is the gravitational field strength near the surface of the planet?

A heat engine does 300 J of work during one cycle. In this cycle 900 J of energy is wasted. What is the efficiency of the engine?[1]

What is the unit of electrical energy in fundamental SI units?

Capacitance is defined as

What is the correct definition of gravitational field strength?

Which of the energy sources are classified as renewable and non-renewable?

Faraday's law of electromagnetic induction states that the electromotive force (emf) induced in a conductor is proportional to

The capacitance of a device is defined as the