emsat physics achieve (general...

MOE‐OD‐EMSAT‐02 Version: 01 Issue date: 20/NOV/2016

EmSAT Physics Achieve

(General Track)

Total Time for Test: 1.5 hour EmSAT Physics Achieve (Advanced Track) is a computer‐based test and has 4 major sections – Physics Foundations, Energy‐ Transmission, Energy ‐ Waves, Force and Motion‐Objects. Test sections, questions, and options are randomized. Sections and subsections of the test are timed by the computer. Test takers can see how much time they have throughout the test. Part 1: Physics Foundations ‐ Able to recognize vector quantities use them to solve problems

Solve problems using scalar multiplication of vectors

Solve problems using addition or subtraction of vectors

Solve problems using linear combination of vectors

Translate a vector Find the magnitude of a vector

Calculate the magnitude and direction of a vector

Find the dot product Find the angle between two vectors Use the dot product to find perpendicular

vectors

Find the components of a vector

Find the component of a vector along another vector


Part 2: Energy‐Transmission ‐ Describe transmission of various forms of energy

o Understand that heat moves in

predictable ways, flowing from warmer

objects to cooler objects until both reach

the same temperature

o Know that heat can be transferred

through matter by the collisions of

atoms and/or molecules (conduction) or

through space (radiation)

o Understand during a phase change, heat energy is absorbed or released

o Understand that most substances expand when heated and contract when cooled

o Know that temperature affects the solubility of some substances in water

o Know the energy cannot be created or destroyed, but only changed from one form into another

o Understand that energy can change

from one form to another, although in

the process some energy is always

converted to heat

o Understand all energy transfers are governed by the law of conservation of energy

o Understand that energy may be converted among mechanical, electromagnetics, nuclear, and thermal forms

o Know that potential energy is the energy

an object possesses by its position or

condition such as gravitational and elastic o Know that kinetic energy is the energy an

object possesses by its motion o Understand an ideal mechanical system is

the sum of the macroscopic kinetic and potential energies is constant

o Understand when work is done or by a system, there is change in the total energy of the system

o Understand that work done against friction results in an increase in the internal energy of the system

o Know that power is the time‐rate at which work is done or energy is expended


Section: 2, Sample Question: 1

Answer: C



Answer: A



Answer: 0.34



Answer: B



Answer: 782.8


Part 3: Energy‐Waves ‐ Explain variations in wavelength and frequency in terms of the

sources of the vibrations that produce them, e.g., molecules, electrons, and nuclear

particles

Know that different forms of electromagneticenergy have different wavelengths

Understand that light passes through some materials, sometimes refracting in the process

Know that electrical energy can be produced

from a variety of energy sources and can be

transformed into almost any other form of

energy Know that electrical circuits provide a means of transferring electrical energy

Understand that material that has been

electrically charged attracts uncharged

material, and may either attract or repel

other charged material Know that a magnet attracts certain materialsand either attracts or repels other magnets

Know that an oscillating system produces waves

Know that waves carry energy and information without transferring mass

Understand that waves incorporate the characteristics of amplitude, wavelength, frequency, period, wave speed, and phase

Know that mechanical waves require a material medium through which to travel

Understand that waves are categorized by the direction in which particles in a medium vibrate about an equilibrium position relative to the direction of propagation of the wave

Know that resonance occurs when energy is transferred to a system at its natural frequency

Know when a wave strikes a boundary between two media, reflection, transmission, and absorption occur

Know the absolute index of refractions is inversely proportional to the speed of a wave

Know all frequencies of electromagnetic radiation travel at the same speed in a vacuum

Know diffraction occurs when waves pass by obstacles or through openings

Understand when waves of similar nature meet, the resulting interference may be explained using the principle of superposition

Understand when a wave source and an observer are in relative motion, the observed frequency of the waves traveling between them is shifted



Answer: B



Answer: 1


Answer: B



Answer: A


Part 4: Force and Motion‐Objects ‐ Explain and predict different patterns of motion of objects

(e.g. linear and uniform circular motion, velocity and acceleration, momentum and inertia)

Know the motion of an object is alwaysjudged with respect to some other object or point

Know the motion of an object can be described by its position, direction of motion, and speed

Understand an object's motion is the result of the combined effect of all forces acting on the object

Know that force is directly related to an object's mass and acceleration

Know that for every action there is an equal and opposite reaction

Understand that every object exerts gravitational force on every other object

Know the electric currents and magnets can exert a force on each other

Understand that machines transfer mechanical energy from one object to another

Know that Friction is a force that opposes motion

Understand that a machine can be made more efficient by reducing friction

Understand that machines can alter

the direction or amount of force, or

the distance or speed of force

required to do work Understand the basic differences

between simple and complex machines Understand that an object in linear

motion may travel with a constant velocity or with acceleration

Understand that an object in free fall accelerates due to the force of gravity

Know the path of a projectile is the

result of the simultaneous effect of

the horizontal and vertical

components of its motion

Understand that a projectile's time inflight is dependent upon the vertical components of its motion

Know the horizontal displacement of

a projectile is dependent upon the

horizontal components of its motion

and its time of flight Understand the inertia of an object is

directly proportional to its mass (NFL) Know when the net force on a system

is zero, the system is in equilibrium Understand an unbalanced force

causes a mass to accelerate (NSL) Know weight is the gravitational force

with which a plant attracts a mass Understand the elongation or

compression of a spring depends

upon its spring constant and the

magnitude of the applied force Know that centripetal forces are the

net force which produces centripetal acceleration

Know that kinetic friction is a force that opposes motion

Understand an impulse acting on an object causes a change in its momentum

Understand that forces occur in action/reaction pairs (NTL)

Know that momentum is conserved in a closed system

Understand field strength and direction are determined using a test particle

Know that gravitational forces are only attractive, whereas electrical and magnetic forces can be attractive and

o repulsive Know the inverse square law applies

to electrical and gravitational fields produced by point sources



Answer: D



Answer: 2.62



Answer: C



Answer: B

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