BMAT- physics questions with verified answers
11H + 21H --> Ans✓✓✓ 32He
Accecleration (m/s2) = Ans✓✓✓ Change in velocity (m/s)/time taken
(s)
Acceleration = Ans✓✓✓ Change in velocity/time
alpha decay of Rn Ans✓✓✓ 22688Ra --> 22288Rn + 42a
Proton number changes
Mass number changes
As you move up the alkane series, whay happens to the boiling
point,viscosity, flammability amd volatility Ans✓✓✓ Boiling point and
viscosity increases; flammability amd volatility decrease
Atomic structure Ans✓✓✓ postive nucleus - protons and neutrons
shells/orbitals around - negative electrons
average speed= Ans✓✓✓ total distance/total time
beta decay of N Ans✓✓✓ 146C --> 147N + 0-1B
Proton number goes up
,Mass - that the same
change of momentum= Ans✓✓✓ resultant force * time for which the
force acts
charge and mass of alpha particle Ans✓✓✓ charge: +2 Mass: 4
Charge on electrons Ans✓✓✓ negative
Current= Ans✓✓✓ charge/time
dangers of ionising cells Ans✓✓✓ damage living cells - break up
molecules into smaller bits called ions - very chemically reactive -
serious damage
dangers of radiation Ans✓✓✓ it can be ionising in the body i.e. lots of
exposure
Dangers of static electricity Ans✓✓✓ 1) Build up on clothes resulting in
spark - bad near fuel fumes/inflammable gases
2) fuel flows out filler pipe, or paper dragged over rollers, or grain
shoots out of pipes; static build up dangerous
density= Ans✓✓✓ mass/volume
,Difference between mass and weight Ans✓✓✓ mass - how much
matter object is made up of
Weight- how much gravitational pull an object has
Differences in densitys of states Ans✓✓✓ solids> liquids > gases
distance time graphs: gradient=
flat sections=
curves= Ans✓✓✓ gradient = speed
Flat section = stationary
Curves = acceleration/decelleration
Due to the conversion of GPE to KE what does this mean for the speed
at which an object falls Ans✓✓✓ It increases as it falls
energy transfer= Ans✓✓✓ power*time
Equation for the fission of uranium-235 Ans✓✓✓ 10n + 235 92U -->
236 92Ba + 90 36Kr + 2 1 0n
Equation reprising pressure exerted on block Ans✓✓✓
Pressure=force/area
, Example of longtitudinal waves Ans✓✓✓ sounds, P-waves
Example of rubbing insualting materials Ans✓✓✓ polyethene
rod/acetate rod rubbed with a cloth
Example of transverse waves Ans✓✓✓ light (and all EM waves), waves
on strings, S-waves
Explain an object moving at a steady speed in terms of forces Ans✓✓✓
Forces are balanced; equal thrust, reaction, drag and weight
Force= Ans✓✓✓ mass * acceleration
Formula to work out the output voltage from a transformer Ans✓✓✓
Vp/Vs = Np/Ns
Vs/Np= Ns/Np
Forumale to work out the distance a wave has travelled Ans✓✓✓
distance = speed * tiime
From radio waves to gamma rays; how do they wary in frequency,
energy and wavelength Ans✓✓✓ increasing frequency and energy
decreasing wavelength
11H + 21H --> Ans✓✓✓ 32He
Accecleration (m/s2) = Ans✓✓✓ Change in velocity (m/s)/time taken
(s)
Acceleration = Ans✓✓✓ Change in velocity/time
alpha decay of Rn Ans✓✓✓ 22688Ra --> 22288Rn + 42a
Proton number changes
Mass number changes
As you move up the alkane series, whay happens to the boiling
point,viscosity, flammability amd volatility Ans✓✓✓ Boiling point and
viscosity increases; flammability amd volatility decrease
Atomic structure Ans✓✓✓ postive nucleus - protons and neutrons
shells/orbitals around - negative electrons
average speed= Ans✓✓✓ total distance/total time
beta decay of N Ans✓✓✓ 146C --> 147N + 0-1B
Proton number goes up
,Mass - that the same
change of momentum= Ans✓✓✓ resultant force * time for which the
force acts
charge and mass of alpha particle Ans✓✓✓ charge: +2 Mass: 4
Charge on electrons Ans✓✓✓ negative
Current= Ans✓✓✓ charge/time
dangers of ionising cells Ans✓✓✓ damage living cells - break up
molecules into smaller bits called ions - very chemically reactive -
serious damage
dangers of radiation Ans✓✓✓ it can be ionising in the body i.e. lots of
exposure
Dangers of static electricity Ans✓✓✓ 1) Build up on clothes resulting in
spark - bad near fuel fumes/inflammable gases
2) fuel flows out filler pipe, or paper dragged over rollers, or grain
shoots out of pipes; static build up dangerous
density= Ans✓✓✓ mass/volume
,Difference between mass and weight Ans✓✓✓ mass - how much
matter object is made up of
Weight- how much gravitational pull an object has
Differences in densitys of states Ans✓✓✓ solids> liquids > gases
distance time graphs: gradient=
flat sections=
curves= Ans✓✓✓ gradient = speed
Flat section = stationary
Curves = acceleration/decelleration
Due to the conversion of GPE to KE what does this mean for the speed
at which an object falls Ans✓✓✓ It increases as it falls
energy transfer= Ans✓✓✓ power*time
Equation for the fission of uranium-235 Ans✓✓✓ 10n + 235 92U -->
236 92Ba + 90 36Kr + 2 1 0n
Equation reprising pressure exerted on block Ans✓✓✓
Pressure=force/area
, Example of longtitudinal waves Ans✓✓✓ sounds, P-waves
Example of rubbing insualting materials Ans✓✓✓ polyethene
rod/acetate rod rubbed with a cloth
Example of transverse waves Ans✓✓✓ light (and all EM waves), waves
on strings, S-waves
Explain an object moving at a steady speed in terms of forces Ans✓✓✓
Forces are balanced; equal thrust, reaction, drag and weight
Force= Ans✓✓✓ mass * acceleration
Formula to work out the output voltage from a transformer Ans✓✓✓
Vp/Vs = Np/Ns
Vs/Np= Ns/Np
Forumale to work out the distance a wave has travelled Ans✓✓✓
distance = speed * tiime
From radio waves to gamma rays; how do they wary in frequency,
energy and wavelength Ans✓✓✓ increasing frequency and energy
decreasing wavelength
