Physics

Physics Of Baseball

“Baseball’s a simple game. You hit the ball. You throw the ball. You catch the ball,\” said a well-respected baseball manager by the name of Casey Stengel. Mr. Stengel was a baseball man, not a mathematician nor a physicist. Physics and mathematics can be applied to the game of baseball on every pitch, and on …

History Of Physics

Physics began when man first started to study his surroundings. Early applications of physics include the invention of the wheel and of primitive weapons. The people who built Stone Henge had knowledge of physical mechanics in order to move the rocks and place them on top of each other. It was not until during the …

Physics Of Baseball

“Baseball’s a simple game. You hit the ball. You throw the ball. You catch the ball,” said a well-respected baseball manager by the name of Casey Stengel. Mr. Stengel was a baseball man, not a mathematician nor a physicist. Physics and mathematics can be applied to the game of baseball on every pitch, and on …

A Century of Physics

By the end of the nineteenth century after more than two thousand years of intellectual struggle that began with the Greek philosophers, physical scientists had reason to believe that they were beginning to understand the universe. Their theories of matter and energy, of electricity and magnetism, of heat and sound and light were confirmed in …

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 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 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

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 …

Chapter 3 Conceptual Physics

only vector quantities include direction. How does a vector quantity differ from a scalar quantity? speed has no specific direction, velocity specifies direction. Why is speed classified as a scalar quantity and velocity classified as a vector quantity? 20 km/h If a vector is 1 cm long represents a velocity of 10 km/h, what velocity …

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Physics Chapter 5

there must also be a corresponding reaction force To say there is no such thing as only one force means unless the wall simultaneously exerts the same amount of force on you You cannot exert a force on a wall Floor When you drop a rubber ball on the floor it bounces back. The force …

Physics 101 Test 3 Review

Galileo Was it Galileo or Newton who first proposed the concept of inertia? Law of motion, resistance, inertia Consider a ball at rest in the middle of a toy wagon. When the wagon is pulled forward, the ball rolls against the back of a wagon. Interpret this observation in terms of Newton’s first law. No, …

Physics Chapter 2

the speed and direction of an object at a particular instant Instantaneous velocity size of a quantity magnitude location of an object relative to an origin position differences in final time and initial time time interval a quantity with both magnitude and direction vectors ratio of the change in position to the time interval during …

Mastering physics Ch. 6

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 impulse. …

Physics Exam #4 Test Practice Questions

Equations: F = IL x B = ILBsin(theta) I = Current L = length of wire B = Magnetic field Plug in and solve. Answer: 1.8 N Calculate the magnitude of the magnetic force on a 240m length of wire stretched between two towers and carrying a 180A current. The Earth’s magnetic field of 6.0×10−5T …

Physics Multiple Choice

C 10 cm STT 1 What is the length of the hypotenuse of this triangle? ( 6 and 8 cm) A 6 cm b 8 cm C 10 cm D 12 cm E 14 cm B STT 1.1 Which car is going faster? A or B? Assume they are equal intervals of time in between …

Physics - Ch 3

operating with displacements according to the rules for manipulating vectors leads to results in agreement with experiments We say that the displacement of a particle is a vector quantity. Our best justification for this assertion is D Ch 3 #2 The vectors a, b, and c are related by c = b – a. Which …

Physics Chapter 7: Projectile Motion

c A vector is a quantity that has a. magnitude and time b. time and direction C. magnitude and direction b A scalar is a quantity that has a. direction b. magnitude c. time d. color d When representing velocity as a vector, a. the direction of the arrow shows the direction of motion b. …

Physics :)

(all) -all the forces acting on an object are balanced -the sum of the positive horizontal forces on an object equals the sum of the negative horizontal forces -the net force on the object is zero -the sum of the upward forces equals the sum of the downward forces Equilibrium occurs when (A and B) …

PHYSICS MIDTERM

68.0 km/h what must your average speed be in order to travel 350 km in 5.15 hr? 4.44 h A car travels 90km/h. How long does it take for it to travel 400km? infinite speed If the position versus time graph of an object is a vertical line, the object is? moving at a constant, …

Physics 101 Midterm 1 Study Questions

a Galileo’s use of inclined planes allowed him to effectively a) slow down the acceleration of free fall b) increase the acceleration beyond that of free fall c) eliminate the acceleration of free fall d) eliminate friction b Which of the following is not a vector quantity? a) velocity b) speed c) acceleration d) All …

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