PHYS20009 Study Guide - Midterm Guide: Ideal Gas Law, Conservation Law, Net Force

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amberherring211

12 Mar 2016

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Newton"s first law of motion: an object will remain at rest or in motion with constant velocity unless acted on by a net external force. Newton"s second law of motion: an object is accelerated whenever a net external force acts on it. The net force equals the object"s mass times it acceleration. Newton"s third law of motion: forces always come in pairs: when one object exerts a force on a second object, the second exerts and equal and oppositely directed force on the first. Newton"s law of universal gravitation: every object exerts a gravitational pull on every other object. Conservation law: states that the total amount of a certain physical quantity present in a system stays constant. In other words, the total mass in an isolated system is constant. The total linear momentum of the objects in the system before the collision is the same as the total linear momentum after the collision.

Related Questions

1) An object is moving with constant velocity. Which of thefollowing statements is true?
a) A constant force is being applied in the direction ofmotion.
b) A constant force is being applied in the direction opposite ofmotion.
c) There are no forces acting on the object.
d) The net force on the object is zero.
e) There is no frictional force acting on the object.

2) You apply the same force to two objects. Object 1 has mass M andobject 2 has mass 5M.
a) ten times that of object 1 b) five times that of object 1
c) the same as that of object 1 d) 1/5 as that of object 1

3) An object of weight W is in free-fall close to the surface ofEarth. What is the force that the object exerts on Earth?
a) a force greater than W b) a force less than W
c) a force equal to W d) no force at all

4) A parking crate slides down an inclined ramp at constantvelocity. Thus we can deduce that _
a) a frictional force is acting on it
b) a net downward force is acting on it
c) a net upward force is acting on it
d) it is not acted on by appreciable normal force
e) it is not acted on by appreciable gravitational force

5) A person applies a constant force of 20N to a rock of mass1000kg for a total of 20 seconds. What is the work done by thisperson if the person does not move at all by this appliedforce?
a) 1000J b) 2000J c) 20,000J d) 0J e) 400J

6) If the net work done on an object is positive, then theobject's kinetic energy.
a) decreases b) remains the same c) increases d) is zero

7) You throw a ball straight up. Compare the sign of the workdone by gravity while the ball goes up with the sign of the workdone by gravity while it goes down.
a) Work is + on the way up and + on the way down
b) Work is + on the way up and - on the way down
c) Work is - on the way up and + on the way down
d) Work is - on the way up and - on the way down

1) An object is moving with constant velocity. Which of the following statements is true?
a) A constant force is being applied in the direction of motion.
b) A constant force is being applied in the direction opposite of motion.
c) There are no forces acting on the object.
d) The net force on the object is zero.
e) There is no frictional force acting on the object.

2) You apply the same force to two objects. Object 1 has mass M and object 2 has mass 5M. The acceleration is
a) ten times that of object 1 b) five times that of object 1
c) the same as that of object 1 d) 1/5 as that of object 1

3) An object of weight W is in free-fall close to the surface of Earth. What is the force that the object exerts on Earth?
a) a force greater than W b) a force less than W
c) a force equal to W d) no force at all

4) A parking crate slides down an inclined ramp at constant velocity. Thus we can deduce that _
a) a frictional force is acting on it
b) a net downward force is acting on it
c) a net upward force is acting on it
d) it is not acted on by appreciable normal force
e) it is not acted on by appreciable gravitational force

5) A person applies a constant force of 20N to a rock of mass 1000kg for a total of 20 seconds. What is the work done by this person if the person does not move at all by this applied force?
a) 1000J b) 2000J c) 20,000J d) 0J e) 400J

6) If the net work done on an object is positive, then the object's kinetic energy.
a) decreases b) remains the same c) increases d) is zero

7) You throw a ball straight up. Compare the sign of the work done by gravity while the ball goes up with the sign of the work done by gravity while it goes down.
a) Work is + on the way up and + on the way down
b) Work is + on the way up and - on the way down
c) Work is - on the way up and + on the way down
d) Work is - on the way up and - on the way down

lavenderbat941

I'm starting a Physics course which uses "Physics for Scientistsand Engineers 8th Edition". The most advanced Math I've taken isPrecalculus (functions and trig). I'm taking Cal 1 at the same timeas this Phys and would like to know if I should skip the Phys andwait until I've learned Cal. The Physics book consists of thefollowing:

Part 1: Mechanics
1 Physics & Measurement
2 Motion in One Dimension
3 Vectors
4 Motion in Two Dimensions
5 The Laws of Motion
6 Circular Motion & Other Applications or Newton's Law
7 Energy of a System
8 Conservation of Energy
9 Linear Momentum and Collisions
10 Rotation of a Rigid Object About a Fixed Axis
11 Angular Momentum
12 Static Equilibrium and Elasticity
13 Universal Gravitation
14 Fluid Mechanics

Part 2: Oscillations and Mechanical Waves

15 Oscillatory Motion
16 Wave Motion
17 Sound Waves
18 Superposition and Standing Waves

Part 3: Thermodynamics

19 Temperature
20 The First Law of Thermodynamics
21 The Kinetic Theory of Gases
22 Heat Engines, Entropy, and the Second Law ofThermodynamics

Sorry about the length but it's an important decision for me. Thankyou.

Danny

PHYS20009 Study Guide - Midterm Guide: Ideal Gas Law, Conservation Law, Net Force

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