PHYSICS 1 - midterm 1
review exam
questions and answers
If an equation is dimensionally correct, does
that mean that the equation must be true? -
answer No
If an equation is not dimensionally correct,
does that mean that the equation cannot be
true? - answer Yes
Must two quantities have the same
dimensions if you are adding them? - answer
Yes
Must two quantities have the same
dimensions if you are multiplying them? -
answer No
,Must two quantities have the same
dimensions if you are subtracting them? -
answer Yes
Must two quantities have the same
dimensions if you are equating them? -
answer Yes
Newton's second law of motion says that the
mass of an object times its acceleration is
equal to the net force on the object. Which of
the following gives the correct units for
force? - answer kgm/ s^2
The fundamental quantity is - answer
temperature
torr is the unit of - answer pressure
Which of the following is the dimensions of
pressure? - answer [ML-1T-2]
Dimensions of Gravitational constant G are -
answer [M-1L3T-2]
, density of an object is defined as - answer
the amount of mass for each unit of volume
The equation for the change of position of a
train starting at t=0 is given by ____, where a
and b are constants. What is the dimension
of b? Note that a and b are constant with
dimensions. - answer LT-3
Which one of the quantities below has
dimensions equal to [ML/T^2] - answer
(mv^2)/r
if force F, acceleration A and time T are taken
as fundamental physical quantities, the
dimension of length L in this new system will
be - answer [AT^2]
The distance between two cities is 100 mi. Is
the number of kilometers between the two
cities larger, smaller, or equal to 100? -
answer larger than 100 D
review exam
questions and answers
If an equation is dimensionally correct, does
that mean that the equation must be true? -
answer No
If an equation is not dimensionally correct,
does that mean that the equation cannot be
true? - answer Yes
Must two quantities have the same
dimensions if you are adding them? - answer
Yes
Must two quantities have the same
dimensions if you are multiplying them? -
answer No
,Must two quantities have the same
dimensions if you are subtracting them? -
answer Yes
Must two quantities have the same
dimensions if you are equating them? -
answer Yes
Newton's second law of motion says that the
mass of an object times its acceleration is
equal to the net force on the object. Which of
the following gives the correct units for
force? - answer kgm/ s^2
The fundamental quantity is - answer
temperature
torr is the unit of - answer pressure
Which of the following is the dimensions of
pressure? - answer [ML-1T-2]
Dimensions of Gravitational constant G are -
answer [M-1L3T-2]
, density of an object is defined as - answer
the amount of mass for each unit of volume
The equation for the change of position of a
train starting at t=0 is given by ____, where a
and b are constants. What is the dimension
of b? Note that a and b are constant with
dimensions. - answer LT-3
Which one of the quantities below has
dimensions equal to [ML/T^2] - answer
(mv^2)/r
if force F, acceleration A and time T are taken
as fundamental physical quantities, the
dimension of length L in this new system will
be - answer [AT^2]
The distance between two cities is 100 mi. Is
the number of kilometers between the two
cities larger, smaller, or equal to 100? -
answer larger than 100 D
