Physics Relativity Level: Misc Level
You are traveling in a spaceship and you throw frisbee to captain Kirk. You measue that it takes 1.5 seconds for the frisbee to get from you to captain Kirk. If an observer on the moon measures that it took 1.7 seconds, how fast must your spaceship be going relative to moon.
Physics Relativity Level: Misc Level
If "Superman "who is faster then a speeding bullet, can go 21,000 m/s, then how much more does he weigh if he weighs 200 lb when standing still?
Physics Relativity Level: Misc Level
A mass of 19 kg moves at a constant speed of 1.0 m/sec relative to an observer. from the point of view of the observer, what is the magnatude of the force vector on that mass? assume the mass travels in a striaght line.
Physics Relativity Level: University
Relativistic MomentumAn electron has a total energy of 6.5 MeV. What is its momentum ( in MeV/c)?
Physics Relativity Level: University
Mass Energy RelationshipAn object of mass 0.12 kg is moving at 1.80 x 10^8 m/s. What is its kinetic energy in joules?
Physics Relativity Level: University
Mass Energy RelationshipTwo lumps of putty are moving in opposite directions each one having a speed of 30.0 m/s . They collide and stick together. After the collision the combined lumps are at rest. If the mass of each lump was 1.00 kg before the collision and no energy is lost to the environment What is the change in mass of the system due to the collision?
Physics Relativity Level: University
Relativistic MomentumAn electron has momentum of magnitude 2.4 x 10^-22 kg*m/s. What is the electrons speed?
Physics Relativity Level: University
Relative VelocityParticle A is moving with a constant velocityVAE = + 0.90 c relative to an Earth observer. Particle B moves in the opposite direction with a constant velocity VBE+ -0.90c relative to the same Earth obsever. What is the velocity of particle B as seen by particle A?
Physics Relativity Level: University
Relative MotionA rectangilar plate of glass measured at rest has sides 30.0 cm and 60.0 cm (a) As measured in a reference frame moving parallel to the 60.0 cm edge at speed 0.25c with respect to the glass what are the lengths of the sides? (b) How fast would a reference frame have to move in the same direction so that the plate of glass viewed in that frame is square?
Physics Relativity Level: University
Relative MotionA laboratory measurement of the coordinates of the ends of a moving meterstick taken at the same time in the laboratory, gives the result that one end of the stick is o.992 m due north of the other end. If the stick is moving due north what is the speed with respect to the lab?
Physics Relativity Level: University
LightA spaceship is traveling away from Earth at 0.87c. The astronauts report home by radio every 12 h ( by their own clocks). At what interval are the reports sent to Earth according to Earth clocks?
Physics Relativity Level: University
LightAn astronaut wears a new Rilex watch on a journey at a speed of 2.0 X 10^8 m/s with respect to Earth. According to mission control in Houston the trip lasts 12.0 h. How long is the trip as measured on the Rolex?
Physics Relativity Level: University
UnitThe light-second is a unit of distance: 1 light - second is the distance that light travels in one second. (a) Find the conversion between light seconds a meters 1 light second= ? m . (b) What is the speed of light units of light second per second.
Physics Relativity Level: High School
A spaceship is approaching the earth at a relative speed of 0.95 c . The mass of the ship is 3.0 107 kg . Find the magnitude of each of the following .a) the classical momentum of the ship .
b) the relative momentum of the ship .
Physics Relativity Level: High School
Mass Energy Equivalent
Three kilograms of water are heated from 20.0 degree to 59.0 degree C .a) How much heat is required to produce this change in temperature ? [The specific heat capacity of water is 4186 J/(kg degree C)]
b) By how much does the mass of the water increase ?
