Ert- Physics

Introduction The purpose of this report is to address the application of treating common vision problems associated with geometric optics. This report will also attend to the nature of the conditions, different methods of treating the conditions and compare the success rates for these methods. The two common vision problems that will be concentrated in …

The Physics Behind the Golf Ball

The Physics behind the Golf Ball One factor that greatly affects the flight and trajectory of a golf ball is the air resistance. People may think that air resistance would make the golf ball slower and drop faster, but this is not true. Modern golf balls have adapted to this by having circular shallow depressions, …

The Moment of Inertia of Flywheel: Physics Questions

[pic] The flywheel of an engine has moment of inertia 2. 5 kg•m2 about its rotation axis. What constant torque is required to bring it up to an angular speed of 400 rev/min in 8s, starting from at rest? [pic] A solid, uniform cylinder with mass 8. 25kg and diameter 15cm is spinning at 200 …

Physics 1-3

the change in position vector of a moving object is equal to the distance it has moved false if a bird is moving at 3.5 m/s at a certain instant of time then it will travel 3.5 m in the next second false If the average speed of an object is zero, then its average …

Physics Practice Questions Chapter 4

B) an automobile battery Which has the greater mass? A) a king-size pillow B) an automobile battery mass A kilogram is a measure of an object’s D) all of these Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has twice as much A) inertia. B) mass. C) volume. E) …

Physics Chapter 5

The boxer can only hit the tissue paper with a force as large as the tissue paper can exert on the boxer, and the low-mass tissue can only exert a weak force. A boxer can hit a heavy bag with great force. Why can’t he hit a piece of tissue paper in midair with the …

Physics 5

True Consider a deer that runs from point A to point B. The distance the deer runs can be greater than the magnitude of its displacement, but the magnitude of the displacement can never be greater than the distance it runs. (T orF) B) 40 KM southwest E) 186,000 miles 2) Which of the following …

Physics practice questions 1

all of the above When the Sun shines on the Moon, the Moon casts a shadow gaining, organizing, and applying new knowledge. The scientific method is most effective in hypothesis. An educated scientific guess is a are changeable. Facts in the field of science a synthesis of a large body of well-tested knowledge. A theory …

Physics

push or pull force combination of all forces acting on an object & changing its motion net force stretching force tension arrow that represents magnitude & direction vector amount that needs direction & magnitude vector quantity only described by magnitude (time, area, volume) scalar quantity state of steadiness when net force is zero mechanical equilibrium …

Physics Vocab

direction Velocity differs from speed in that velocity indicates a particle’s ___of motion vector Unlike speed, velocity is a ___ quantity magnitude A vector has, by definition, both ___ and direction components Once you have selected a coordinate system, you can express a two-dimensional vector using a pair of quantities known collectively as ___. distance …

Physics Vocab ch 5

This quantity includes both magnitude and direction Vector and Scalar Quantities This is a quantity that requires both magnitude and direction for a complete description . Also Velocity and Acceleration are apart of this quantity as well. Other quantities, such as momentum, are also this. Vector Quantity This is a quantity that is completely described …

Physics Scalar and Vector quantities

scalar and vector what are the 2 categories of physical quantities magnitude only what does a scalar quantity have? magnitude and direction what does a vector quantity have? Scalar quantities Distance, speed, time, mass and energy are examples of what? Vector quantities Displacement, velocity, acceleration, force, weight, and momentum are examples of what? Kinematics what …

Physics Test 3

Number of pages in a book (no direction) What is an example of scalar quantity? Average velocity (includes direction) What is an example of vector quantity? From the tail of the first vector to the tip of the last vector. If vectors are moved according to the rules of the triangle method of vector addition, …

physics ch 3

the motion of objects moving in two dimensions under the influence of gravity projectile motion x-axis: horizontal along the ground; y-axis: up and down best coordinate system to analyze a painter climbing a ladder at an angle of 60° to the ground projectile long jumper projectile baseball hit by a bat projectile volleyball served over …

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Chap. 6 - Physics

the moving skateboard Which has a greater momentum: a heavy truck at rest or a moving skateboard? its mass times velocity is greater than that of the car. A slowly moving ship can have a greater momentum than a fast-moving racing car when _______. Impulse is force times a time interval. Distinguish between force and …

AP Physics- vocab 2

A vector quantity that represents the length and Direction of a straight-line path from one point to another Displacement The area of physics that deals with the mathematical methods of describing motion without regard to the forces which produce it Kinematics A vector quantity that represents the time rate of change in the velocity of …

Physics Chapter 3

A quantity that has magnitude and direction Vector quantity that has only magnitude Scalar -the length of the arrow represents the speed -the length of the arrow is drawn to a suitable scale -the direction of the arrow shows the direction of motion What happens when a velocity is represented as a vector draw the …

Acd. Physics chapters 4, 5, and 6

B) 100 N A 100-N lantern is suspended by a pair of ropes with 120 degrees between them (each 60 degrees from the vertical). The tension in each rope is A) less then 100 N B) 100 N C) more then 100 N C) straight down, even if the person is standing on a hill …

Physics Final

0.0 m/s What is the speed of an object at rest? Vavg = change in distance (x) / change in time (t) Which of the following is an equation for average velocity? A cat jumps from a tree limb to the ground. Which of the following situations represents a negative displacement? (Assume positive position is …

Physics Semester 1 HW Final Review

The friction force is equal and opposite to your push When you push horizontally on a crate that doesn’t slide on a level floor, how great is the force of friction on the crate? The friction force increases and is opposite in direction to your push. As you increase your push on a stationary crate, …

Physics 20

A series of images showing the positions of a moving object at equal time intervals What is a motion diagram? A simplified version of a motion diagram in which the object in motion is replaced by a series of single points. In order to use this model, the size of the object must be much …

physics

displacement what quantity describes the difference between an objects initial positions and the objects final position? average velocity what is the ratio of an objects displacement to the time interval during which the displacement occurred? acceleration The ratio of the change in an objects velocity to the time required for the change to occur describes …

Physics Exam set 1

the speed of light Today the standard meter is defined in terms of a standard platnium-iridium cylinder the standard unit of mass is defined in terms of the electromagnetic waves emitted by cesium atoms the standard unit of time is defined in terms of 10^4 millimeters Which of the following is the longest length? 10^0 …

Physics Ch. 3 Test

vector requires both magnitude and direction for a complete description while scalar is completly described by magnitude only How does a vector quantity differ from a scalar quantity? velocity is vector because they both contain direction as well as something else. Speed is scalar because it has nothing to do with direction, but only magnitude …

Physics Make Up Multiple Choice

True Wind velocity can be represented as a vector quantity. False The horizontal component of velocity for a projectile varies with time, even with no air resistance. False A quantity that has both magnitude and direction is called a scalar. True The vertical component of velocity for a projectile varies with time, even with no …