Exam (elaborations)
AS LEVEL PHYSICS 9702 QUESTIONS ANSWERS WITH SOLUTIONS 2024
- Course
- Institution
AS LEVEL PHYSICS 9702 QUESTIONS ANSWERS WITH SOLUTIONS 2024
[Show more]
Content preview
AS LEVEL PHYSICS 9702 QUESTIONSANSWERS WITH SOLUTIONS 2024
Newtons first law - ANSWER An object will remain at rest or keep traveling at constant velocity unless it
is acted on by a resultant force
Newtons second law - ANSWER The resultant force acting on an object is equal to the rate of change of
its momentum
Newtons third law - ANSWER When two bodies interact, the forces they exert on each other are equal
and opposite.
Name the 7 base units - ANSWER meter, kilogram, second, ampere, kelvin, mole, candela
Systemmatic error - ANSWER an error in readings which is repeated throughout the experiment
Accuracy - ANSWER an accurate value of a measured quantity is one which is closer to the true value of
the quantity
Precision - ANSWER the smallest change in value that can be measured by an instrument or an operator
Random error - ANSWER Inaccuracies when taking measurements
What causes upthrust - ANSWER Upthrust arises from the pressure which a fluid exerts on an object.
When there is more pressure on lower surface than the upper surface.
What is a newton - ANSWER Force required to accelerate 1kg of mass by 1ms⁻²
weight on a slope - ANSWER w=mgsinθ
Define center gravity - ANSWER The point where all the weight of the object may be considered to act.
, Define moment - ANSWER Product of force and the perpendicular distance from the pivot in which the
force is acted upon
Define a couple - ANSWER Two parallel forces that are equal in magnitude, acting in an opposite
direction to create a turning effect but not causing the object to accelerate.
How to calculate torque of a couple - ANSWER One of the forces x perpendicular distance between the
forces
Conservation of energy - ANSWER Energy cannot be created or destroyed, it can only be converted from
one form another.
Define Watt - ANSWER The rate of transfer of energy of one joule per second
Conservation of momentum - ANSWER total momentum in a system before and after the collision will
remain constant unless acted on by an external force
Perfectly elastic collision - ANSWER -Both momentum and kinetic energy are conserved.
-Relative speeds before and after stay the same.
Inelastic collision - ANSWER Momentum is conserves however kinetic energy is not conserved because it
is lost due to deforming the two objects.
How to know if a material obeys Hooke's law - ANSWER If the extension produced in it is proportional to
the applied force.
Hooke's law equation - ANSWER F=kx
Elastic potential energy - ANSWER E = 0.5Fx E = 0.5kx²
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Performance. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78252 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now