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Physics > Quick Fire Questions > Flashcards

Quick Fire Questions Flashcards

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1
Q

What are the units for force?

A

Newtons (N)

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2
Q

What are the units for mass?

A

Kilograms (kg)

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3
Q

What are the units for energy transfer?

A

Joules (J)

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4
Q

What is the unit of power?

A

Watts (W)

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5
Q

What words can be used instead of work done?

A

Energy Transfer

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6
Q

What is an alpha particle?

A

A helium nucleus

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7
Q

What is a beta particle?

A

A high energy electron

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8
Q

What is a gamma particle?

A

An electromagnetic wave

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9
Q

Which form of radiation is the most ionising?

A

Alpha

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10
Q

Vectors and Scalars both have magnitude (size). What does a vector have that a scalar doesn’t?

A

Direction

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11
Q

What is the value of gravitational field strength on earth? (Remember units)

A

9.8 N/kg

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12
Q

What equation links power, energy transfer and time?

A

Power= energy transfer/ time

Power (W)= e (J) / t (seconds)

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13
Q

What equation links force spring constant and extension?

A

Force= spring constant x extension

F (N) = k (N/m) x e (metres/m)

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14
Q

What equation links power, work done and time?

A

Power= work done / time

power (W) = W (J) / t (seconds)

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15
Q

What equation links density, mass and volume?

A

Density= mass / volume

p (g/cm3) = m (g) / V (cm3)

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16
Q

What equation links weight, mass and gravitational strength?

A

Weight= mass x gravitational field strength

F (N) = m (kg) x g (N/ kg)

17
Q

What is the equation for efficiency?

A

Efficiency = useful power output / total power output

Efficiency= useful output energy transfer/ total input energy transfer

18
Q

What is the equation for kinetic energy?

A

Kinetic energy = 0.5 x mass x velocity2

Ek (J) = 1/2 x m (kg) x v2 (m/s)

19
Q

What is the equation for gravitational potential energy?

A

Gravitational potential energy = mass x gravitational field strength x height

( Ep (J) = m (kg) x g (N/kg) x h (m) )

Physics (10 decks)

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