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explain tension force ftensforce that is transmitted by a string rope cable or write when it is pulled tight by forces acting from opposite ends the
air resistance force fair special type of frictional force that acts upon objects as they travel by the air force of air resistance is often observed
explain friction force ffrictforce exerted by a surface as an object moves across it or makes an effort to move across it there are 2 parts of
what is normal forceforce exerted upon an object that is in get in touch with another stable object if a book is resting upon a surface then the
what is gravity force fgravforce with which the earth moon or massively large object attracts another object towards itself by meaning this is the
applied force fapp an applied force is a force that is useful to an object by a person or another object if a person is approaching a desk across the
contact forces types of forces that result when the two interacting objects are apparent to be physically linking each otherex frictional forces
force push or pull upon an object resulting from the objects dealings with another objectwhenever there is an interaction among two objects there is
anode rays were discovered by1goldsteinbj stoney 3rutherford 4jj thomsonans
cathode rays are made up of1 positively charged particles2 negatively charged particles3 neutral particles4 none of theseans 2negatively charged
which is correct statement about proton1proton is nucleus of deuterium2proton is ionized hydrogen molecule 3proton is ionized hydrogen atom4proton
the nucleus of helium contains1four protons2four neutrons3two neutrons and two protons4four protons and two electronsans 3two neutrons and two
an elementary particle is1an element present in a compound 2an atom present in an element 3a sub-atomic particle4a fragment
penetration power of proton is1more than electron 2less than electron 3more than neutron4noneans2less than
heaviest particle is1meson2neutron 3proton4electronans
number of neutron in c12 is1627 3849ans
cathode rays are1protons2electrons 3neutrons4alfa -particlesans
the order of density in nucleus is1108kgcc210-8kg cc310-9kgcc41012kgccans
the discovery of neutron becomes very late because1neutrons are present in nucleus2neutrons are highly unstable particles3neutrons are
unbalanced forces cause accelerationsin this case the unbalanced force is directed opposite the books motion and will cause it to slow down to verify
the density of neutrons is of the order1103kg cc 2106kgcc 3109kgcc4 1011kgccans4
magnitude of ke in an orbit is equal to1half of the potential energy 2twice of the potential energy 3one fourth of
balanced and unbalanced forces-newtons first law of motion states that an object at rest stays at rest and an object in motion stays in motion with
state of motioninertia is the tendency of an object to resist alters in its state of motionstate of motion of an object is described by its velocity
mass as a measure of the amount of inertiaall objects resist alters in their state of motion because they have inertia however some objects have more