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Inertia
Inertia

... Questions on Newton’s Second Law 6. If identical forces act on two objects, where object A is twice as massive as object B, how do their accelerations compare? 7. If I double the mass of an object, by what factor must I change the applied force to maintain a certain acceleration? 8. If one force pul ...
Josh`s physics kinematics outline
Josh`s physics kinematics outline

... Objects that are shot through the air are called projectiles. Each projectile follows a certain trajectory. If you know the initial thrust that the object received, you can calculate the trajectory. To calculate the trajectory, you must break the vector of the projectile into its horizontal and vert ...
Linear Momentum Test Mr. Kepple
Linear Momentum Test Mr. Kepple

... A 2-kilogram block and an 8-kilogram block are both attached to an ideal spring (for which N/m) and both are initially at rest on a horizontal frictionless surface, as shown in the diagram above. In an experiment, a 100-gram (0.1 kg) ball of clay is thrown at the 2-kilogram block. The clay is moving ...
Physics Review #1
Physics Review #1

... A student throws a baseball vertically upward and then catches it. If vertically upward is considered to be the positive direction, which graph best represents the relationship between velocity and time for the baseball? ...
Ch. 27 notes
Ch. 27 notes

Ch 4 Worksheet no Answers
Ch 4 Worksheet no Answers

... 5. In a device known as an Atwood machine, a massless, unstretchable rope passes over a frictionless peg. One end of the rope is connected to an object m1 = 1.0 kg while the other end is connected to an object m2 = 2.0 kg. The system is released from rest and the 2.0 kg object accelerates downward w ...
5 Environmental Physics for Freshman Geography Students
5 Environmental Physics for Freshman Geography Students

... We may take equation (2.3) as a working definition of momentum: momentum equals mass times velocity. But it is rather a "dry" formula so let us now try and put some life into it. If you fire a gun you notice that the gun jumps backwards as the bullet flies forwards. Now you could make a movie of thi ...
PhysicsBowl Exam - American Association of Physics Teachers
PhysicsBowl Exam - American Association of Physics Teachers

... into the plane of the page as shown. The magnetic field strength steadily increases with time. Which one of the following effects best describes the result of this field increase? (A) The entire loop moves up the plane of the page. (B) The loop rotates with the top edge of the loop initially moving ...
Unit 3 AP Universal Gravitation, Uniform Circular Motion, and
Unit 3 AP Universal Gravitation, Uniform Circular Motion, and

... 15. *An airplane is flying in a horizontal circle of radius of 1.0 km. a. What must be the speed of the plane if the pilot is to experience a centripetal acceleration of 3g? (171.46 m/s) b. If the pilot has a mass of 75 kg, what centripetal force acts on him? (2.21 E3 N) c. What provides the center- ...
E r o s
E r o s

force - the SASPhysics.com
force - the SASPhysics.com

... • Forces arise due to the interaction of two (or more) objects. • Not all forces require contact, some can act at a distance – e.g. gravity, magnetism ...
CP PHYSICS
CP PHYSICS

...  a coil of wire is placed inside a magnet, when electricity goes through the wire it becomes an electromagnet and interacts with the magnet’s magnetic field  the wire then spins, every 180o the current reverses direction so that the wire keeps spinning and spinning  motors convert electrical ener ...
(True ) or (False)?
(True ) or (False)?

... An object is moving in the positive direction of the x-axis with a relationship x(t)=8+2t+3t2, the instantaneous velocity after 2s is: a) 24m/s b) 2+6t c) 14m/s d) 12m/s ...
Horizontal Circular Motion Notes
Horizontal Circular Motion Notes

Questions – Impulse and Momentum
Questions – Impulse and Momentum

AP Physics 1 Exam Cram Sheet
AP Physics 1 Exam Cram Sheet

... 33. In N3, the reaction force is always the same kind of force as the first one (the reaction to a frictional force is another frictional force, the reaction to a gravitational force is another gravitational force). 34. The Law of Conservation of Momentum is based on the action-reaction pair of forc ...
Quiz
Quiz

Faraday Rotation
Faraday Rotation

P2 Knowledge Powerpoint
P2 Knowledge Powerpoint

... •The size of acceleration depends on: • Size of the force • Mass of the object • The larger the resultant force on an object the greater its acceleration. • The greater the mass of an object, the smaller its acceleration will be for a given force. ...
P2 Knowledge Powerpoint – Part 1
P2 Knowledge Powerpoint – Part 1

P2 Knowledge Powerpoint
P2 Knowledge Powerpoint

... •The size of acceleration  depends on: • Size of the force • Mass of the object • The larger the resultant force on an object the  greater its acceleration. • The greater the mass of an  object, the smaller its  acceleration will be for a  given force. ...
Ch33
Ch33

... • A light wave is an electromagnetic wave, an oscillation of the electromagnetic field. • Other electromagnetic waves, such as radio waves, microwaves, and ultraviolet light, have the same physical characteristics as light waves even though we cannot sense them with our eyes. • All electromagnetic w ...
Mark the following statements true or false
Mark the following statements true or false

... satellite B is 6 hours. Therefore, from Kepler’s 3rd law, we can conclude that a. The speed of A is twice the speed of B b. A is closer to earth than is B c. B is closer to earth than is A d. The speed of B is greater than the speed of A e. A and B sweep out equal areas around the earth in equal tim ...
Exam 1B #2
Exam 1B #2

... mass m2 = 1.0 kg. The force is directed up a plane tilted by = 37°. The box is connected by a cord to a UPS box of mass 3.0 kg on the floor. The floor, plane, and pulley are frictionless, and the masses of the pulley and cord are negligible. ...
White light is spread out into spectral hues by a grating
White light is spread out into spectral hues by a grating

... Always virtual and smaller than the actual object Always real and larger than the actual object Always virtual and larger than the actual object Could be real or virtual and larger or smaller than the actual object, depending on the placement of the object ...
< 1 ... 96 97 98 99 100 101 102 103 104 ... 170 >

Faster-than-light

Faster-than-light (also superluminal or FTL) communication and travel refer to the propagation of information or matter faster than the speed of light.Under the special theory of relativity, a particle (that has rest mass) with subluminal velocity needs infinite energy to accelerate to the speed of light, although special relativity does not forbid the existence of particles that travel faster than light at all times (tachyons).On the other hand, what some physicists refer to as ""apparent"" or ""effective"" FTL depends on the hypothesis that unusually distorted regions of spacetime might permit matter to reach distant locations in less time than light could in normal or undistorted spacetime. Although according to current theories matter is still required to travel subluminally with respect to the locally distorted spacetime region, apparent FTL is not excluded by general relativity.Examples of FTL proposals are the Alcubierre drive and the traversable wormhole, although their physical plausibility is uncertain.
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