The unit of force in S.I. units is
*Newton*
The unit of work or energy in S.I. units is _____.
*Joule*
Find the distance a hiker walks if he travels 3.50 km north, and then turns around and walks 3.00 km south.
*6.5 km*
The SI unit of absolute temperature is ____________
*Kelvin*
The reluctance of an object to start or stop moving is known as _______.
*inertia*
3-vectors are only properly represented in a 3-dimensional _____.
*space*
The coefficient of limiting static friction is the ratio of the ____ to the normal force.
*frictional force*
An object is shot from the ground at 75m/s at an angle of 45 degrees above the horizontal. How high does the object get before beginning its descent?
*140 m*
If a force of 40N acting in the direction due East and a force of 30N is acting in the direction due North. Then the magnitude of the resultant forces will be ___________.
*50N*
A Null vector is a vector whose magnitude is __________.
*zero*
The heat required to raise the temperature of the body through 1K is called _______
*heat capacity*
An object is shot from the ground at 125m/s at an angle of 30 degrees above the horizontal. How far away does the object land?
*1350 m*
The __________ pendulum is any real pendulum in which all the mass is taken to be concentrated at a point
*physical*
The amplitude of oscillations of a particle in simple harmonic motion is damped by _______ forces due to the surrounding medium.
*Resistive*
What is the unit of impulse?
*Ns*
The _______ occurs when the driving frequency is the same as the natural frequency of the oscillator.
*resonance*
Forces are called coplanar when all of them acting on body lie in one _____.
*plane*
The locus of the instantaneous centre of a moving rigid body is called ___________.
*centroid*
The _________ is an aggregate of point masses such as that the relative separation between any two points remains invariant
*rigid body*
The general motion of a rigid body is a combination of ________and rotation.
*translation*
The specific latent heat of vapourization of a liquid is the quantity of heat in joules required to change 1kg mass of the liquid at its _______to gas at the same temperature.
*boiling point*
Radius of _________ is the radial distance from any given axis at which the mass of a body is concentrated without changing the moment of inertia of the body about that axis.
*gyration*
__________forces meet at one point and have their lines of action in different planes.
*non-coplanar current*
Applied force is proportional to extension produced is a statement of ____ law.
*Hooke’s*
A ________ is the turning effect caused by a couple.
*torque*
A _______ consists of two equal and opposite parallel forces.
*couple*
When a gas is allowed to expand at constant temperature the process is described as ____.
*isothermal*
What is the spring constant (in N/m) of an elastic material that produces an extension of 5 cm when a weight of 0.35 N is applied?
*7*
The velocity of a particle at some point of its path is called _________.
*instantaneous velocity*
In a circular motion which of the quantities is constant?
*acceleration*
_______ is that which enables a body to perform work.
*Energy*
According to the kinetic-molecular theory, particles of matter are in____ motion.
*constant*
According to the kinetic-molecular theory, particles of matter are in motion in both gas and _____.
*liquid*
When an adiabatic work is done on or by a system the change in internal energy is equal to the __________ work done.
*adiabatic*
According to the kinetic-molecular theory, particles of an ideal gas neither attract nor repel each other but _____.
*collide*
One of the following is not a fundamental quantity.
Volume
Which of the following is a coordinate system for specifying the precise location of objects in space?
Frame of reference
In physics, frames of reference are classified by two main types: ______.
fast and slow
Which of the following quantities is considered a vector?
Displacement
For the 3-vector (-2, 5, 6) in an xyz-coordinate plane the 5 corresponds to a
positive value along the x-axis
A body moves, from rest with a constant acceleration of 5 m per squared sec. The distance covered in 5 sec is most nearly
62.5 m
The amount of heat energy per mole that must be added or removed when a substance changes from one phase to another is called ______.
latent heat
A football player could routinely kick a ball at a horizontal speed of 160 km/hr. How long did the ball take to reach a point 18.4m away?
0.414 s
The rate of evaporation decreases with increasing _____
pressure
The____ pendulum is any real pendulum in which all the mass is taken to be concentrated at a point.
physical
The amplitude of oscillations of a particle in simple harmonic motion is damped by _____ forces due to the surrounding medium
Resistive
A man will exert the greatest pressure on a bench when he _____
stands on the toes of one foot
The gravitational force on a satellite produces the centripetal acceleration that keeps the satellite in
orbit
The ____ occurs when the driving frequency is the same as the natural frequency of the oscillator.
Sound
A 2kg box is at the top of a frictionless ramp at an angle of 60o. The top of the ramp is 30m above the ground. The box is sitting still while at the top of the ramp, and is then released. What is the velocity of the box just before it hits the ground?
32.2 m/s
An ungraduated mercury thermometer attached to a millimeter scale reads 22.8mm in ice and 242mm in steam at standard pressure. What will the millimetre read when the temperature is 20oC?
66.64mm
Convert 45oC to oF
113oF
Alcohol boils at
78oc
The path followed by the projectile is known as
trajectory
How much heat is required to melt 1.5kg of ice and then to raise the temperature of the resulting water to 50oC?
8.1 x 10^ 5J
When matter is heated, it
expands
If the linear expansivity is of a metal is 2.0 x 10-5 oC-1, calculate its cubical expansivity.
6.0 x 10-5 oC-1
A fixed mass of gas of volume 546cm3 at 0oC is heated at constant pressure. Calculate the volume of the gas at 2oC.
550cm3
When a gas is allowed to expand without heat entering or leaving the gas, the gas is said to undergo an ____.
adiabatic expansion
Which of the following is dimensionless?
Strain
The work done by stretching a string is ____.
Zero
The unit of work is the unit of _____multiplied by the unit of distance.
force
A system that its boundary allows transfer of mass and energy into or out of the system is known as___.
open system
A piece of stone has a mass of 80kg and a volume of 0.12m3. What is its density?
666.67 kg/m3
The radiant heat energy could be detected and measured by ____.
the thermopile
The _____ is an aggregate of point masses such as that the relative separation between any two points remains invariant.
it appears to lose weight
What happens to a body which is immersed in a fluid?
it appears to lose weight
The specific latent heat of vapourization of a liquid is the quantity of heat in joules required to change 1kg mass of the liquid at its ____to gas at the same temperature.
boiling point
Upthrust force can be explained in terms of the forces acting on the body _____.
due to the pressure acting on each of the surfaces of the body.
A stone weighs 450 N in air and 200 N in water. Compute the volume of the stone.
0.025 m3