Ocr Gcse Physics P1

electromagnetic spectrum – full range of em spectrum
Power – The rate of doing work or the rate of using energy
Terminal velocity – Constant speed that a freely falling object eventually reaches
mass number or nucleon number – The number of neutrons and protons in the nucleus of an atom.
mechanical energy – Kinetic or potential energy associated with the motion or position of an object
If A and B start from the same place, but A has twice the acceleration that B does, what is the speed of A compared to B? – Twice as fast. Twice the acceleration = twice as fast.
How can parallax be used? – It can cause stars to appear to move in relation to other stars over time, so can be used to measure these (interstellar) distances. These large distances are measured in parsecs (pc)- one parsec being the distance to a star with a parallax angle of one arcsecond.
B – 73. Magnification can be accomplished with a hologram if it is viewed with light that has a
a. shorter wavelength than the original light.
b. longer wavelength than the original light.
c. neither of the above.
light year – the distance light travels through a vacuum during one year
Power – = current squared times resistance
B – 73. Magnification can be accomplished with a hologram if it is viewed with light that has a
a. shorter wavelength than the original light.
b. longer wavelength than the original light.
c. neither of the above.
The mA stations on the control panel exercise control over which component?
A. Transformer
B. Rectifier
C. Filament
D. Rheostat – D. Rheostat
During a characteristic interaction, the dropping of a higher-energy state electron into a lower-energy state hole results in the emission of? – A photon of electromagnetic energy
Typically, as an ultrasound wave travels through soft tissue the power of the wave ___________. – Decreases.
What is the hydrostatic pressure of a patient laying supine? – Hydrostatic pressure is zero at all locations because there is no column of blood pressing on the vessels of the body
Impulse – the product of the force action on an object and the time during which its acts
friction – Noun.
the natural force that prevents one surface from sliding easily over another surface

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