The area under a force-time graph represents--------
change in kinetic energy
change in momentum
change in work done
change in internal energy
Correct answer is B
It is a graph that represents the force that acts on a body in a certain amount of time.
Force on the object is represented by the y-axis and time taken by the object is represented by the y axis.
The area under the curve indicates the impulse, the change in momentum that the object undergoes.
Which of the following scientist suggested that moving particles exhibit wave properties?
Isaac Newton
Ernest Rutherford
Louis de Broglie
J.J. Thompson
Correct answer is C
In 1924 Louis de Broglie introduced the idea that particles, such as electrons, could be described not only as particles but also as waves
Which of the following factors is not among that determines the resistance of a wire?
mass
cross-sectional area
length
material
Correct answer is A
No explanation has been provided for this answer.
decreases
remains the same
increases then decreases
increases
Correct answer is A
No explanation has been provided for this answer.
Which of the following set of quantities have members which are all vectors?
Pressure, energy and force
Force, displacement and momentum
Distance, acceleration and work
Density, volume and weight
Correct answer is B
No explanation has been provided for this answer.