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An alien spaceship fires a high energy beam of photons at a rebel base relative to an observer on the base, the alien ship is approaching at 0.943c. Determine the speed of the photon beam as measured by the rebel observer?
A solid, uniform disk of radius 0.250 meter and mass 48.7 kilogram rolls down a ramp of length 4.00 meter that makes an angle of 16.0 degree with the horizontal. Obtain the angular speed of the disk at the bottom of the ramp
consider the following situation. a block of mass 20 kg is initially at rest on an inclined that makes an angle of 37
one solenoid is centered inside another. the outer one has a length of 45.0 cm and contains 6800 coils, what is the EMF induced in the inner solenoid
A hollow sphere of inner radius 8.0cm and outer radius 9.0cmfloats half -submerged in a liquid of density 800kg/m3, What is the mass of the sphere
A 2030- test rocket is launched vertically from the launch pad. Its fuel (of negligible mass) provides a thrust force so that its vertical velocity as a function of time is given by, What was the initial thrust due to the fuel
A thin uniform rod has a length of 0.520 and is rotating in a circle on a frictionless table. The axis of rotation is perpendicular to the length of the rod at one end and is stationary. What is the mass of the bug
consider an electron in a box. if the energy of the first excited state is 10 evlarger than the energy of the ground
Two cars of 2000 kg each collide head-on while traveling at 75.0 miles per hour. What is the temperature increase of the cars
A white billiard ball with mass mw = 1.57 kg is moving directly to the right with a speed of v = 3.43 m/s and collides elastically with a black billiard ball with the same mass mb = 1.57 kg that is initially at rest. What is the final speed of the..
The antenna on a cordless phone radiates microwaves at a frequency of 7.0 GHz. What is the maximum length of the antenna if it is not to surpass half of a wavelength?
A certain brand of hotdog cooker works by applying a potential difference of 142 V across opposite ends of a hot dog and allowing it to cook by means of the thermal energy produced.How much electrical energy is transferred to thermal energy.
q1. a .3kg baseball travelling at 48 ms approaches a waiting batter. when the ball is hit its back sailing away at 80
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