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A 40-kg projectile leaves a 2000-kg launcher with a speed of400 m/s. What is the recoil speed of the launcher?
A 2.0-mW laser pointer has a beam diameter of 1.7 mm. When it is accidentally pointed at a person's eye, What is the intensity of light incident on the retina
How fast (as a percentage of light speed) would a star have to be moving so that the frequency of the light we receive from it is 14.0 % higher than the frequency of the light it is emitting?
Wonder Woman and Superman fly to an altitude of 1650 km, carrying betwen them a chest full of jewels that they intend to put into orbit around Earth. At what speed does the chest impact the surface of the water
A uniform disk of mass 4m is rotating an a plane parallel to the ground with angular frequency of 12 rad/sec. What fraction of kinetic energy was lost
An extreme distance runner is having an easy training day and runs 34 km west over 3 hours, Calculate his/her distance, displacement, speed and velocity for the entire training session
An ordinary drinking glass is filled to the brim with water (245.0 mL) at 2.05°C and placed on the sunny pool deck for a swimmer to enjoy. how much water will have spilled over the top of the glass
Two electrons are fixed 2.6 cm apart. Another electron is shot from infinity and comes to rest midway between the two. What was its initial speed
At t=0, the displacement x(0) of a block attached to a spring is -850 cm. The block's velocity v(0) is then -.920m/s, what is the abgular frequency of this system
A spaceship is coming directly toward you while you are in the international space station. You are told that the spaceship is shining sodium light. You have an apparatus that and resolve two closely spaced wavelengths if the difference is 0.55 nm. I..
A pot containing 1.06 liter of water, initially at 22°C, is placed on a 1091 W electric heating element. How much heat is necessary to boil all the water away
A real heat engine working between heat reservoirs at 970. K and 650. K produces 550. J of work per cycle for heat input of 2200. J. Calculate the total entropy change of the universe
A heat engine using a diatomic ideal gas goes through the following closed cycle, What is the thermal efficiency of this heat engine
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