HSC Physics All Modules

What was a major weakness in Rutherford's model?

• It did not explain spectral lines

• It did not identify the nucleus

• It only applied to the hydrogen atom

• Electron orbits are not quite circular

What experiment led Rutherford to develop his model of the atom?

• Thomson's charge to mass ratio experiment

• Geiger's experiment with vacuum tubes

• Davisson and Germer experiment with nickel crystals

• Geiger and Marsden's alpha particle scattering experiment

Who first developed the mathematics to describe the Hydrogen emission spectrum?

• Balmer

• Bohr

• Einstein

• Planck

Predict the electron jump in the hydrogen spectrum which would emit the highest energy value

• from n = 6 to n = 1

• from n = 7 to n = 1

• from n = infinity to n = 1

• from n = 1 to n = infinity

An object is placed on a set of scales on Earth and the scales read 8.0 kg. The mass and the scales are taken to Mars by astronauts. When they arrive, the astronauts place the mass on the scales. The gravitational acceleration on Mars is 3.72 ms^-2. What will the scales read?

• 3.0 kg

• 8.0 kg

• 21.08 kg

• 29.76 kg

The acceleration due to gravity on planet Y is twice that of planet X. What would be the weight of a mass on planet X compared to planet Y?

• 1:1

• 1:2

• 2:1

• You need to know the mass to determine this

A pendulum on a space station which is orbiting Earth is hung from the ceiling of the station and the bob is pulled to one side and then released. Which choice correctly describes what happens to the bob?

• It remains where it is

• It swings slower than it would on Earth

• It swings faster than it would on Earth

• It slowly returns to its lowest position

What is the relationship between the work on an object and its gravitational potential energy?

• The work done on the object equals its gravitational potential energy

• The work done on the object equals the change in its gravitational potential energy

• The work done on the object equals the increase in its gravitational potential energy

• The work done on the object equals the decrease in its gravitational potential energy.

When will the gravitational potential energy of an object be zero?

• When it is at infinity

• When it is on the surface of the planet

• When it is in outer space

• When its acceleration is 9.8 ms^-2

A satellite is moved into a higher altitude orbit. Which statement about this satellite is correct?

• Work is done by the satellite engines and its E_p increases

• Work is done by the satellite engines and its E_p decreases

• Work is done by gravity and its E_p increases

• Work is done by gravity and its E_p decreases