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A copper ball with a radius of 1.7cm is heated until its diameter has increased by 0.17mm .Assuming an initial temperature of 23 degrees, find the final temperature of the ball.
A cosmic-ray proton is moving at such a speed that it can travel from the Moon to Earth in 1.5s. At what fraction of the speed of light is the proton moving
archaeologists often find only parts of ancient human remains. for example they may find a small finger bone called the
A projectile is launched with a momentum of 200 kg • m/s and 1000 J of kinetic energy. What is the mass of the projectile
Where does the energy of an objects inertia come from. You can throw a ball, And how is the ball interacting with the space around it to be moving in the first place?
As a bacterium swims through water it propels itself with its flagella so as to overcome the frictional drag forces and move at, more or less, constant velocity of 100 micrometers/s for periods of time. If the frictional drag force on a bacterium is ..
Of the charge Q initially on a tiny sphere, a portion q is to be transferred to a second, For what value of q/Q>0.5 will the electrostatic force between the two parts have 1/2 of the maximum possible value
Find the power delivered by the good battery, and discuss where this power goes, assuming that the emf's and resistances of each battery remain the same throughout the process
At one instant, a 0.26 kg particle is located at the position [r=(5.9m)*i+(5.5m)*j]. What is the angular momentum of the particle about the origin, in unit-vector notation
The ladder of the lunar lander was approximately 10ft high. If Neil Armstrong had fallen out of the lander while on the moon, Calculate the acceleration due to gravity on the moon
question a healthy heart pumps about 70 ml of blood in one heart beat. the average pressure exerted is about 100 mm-hg
A loudspeaker is generating sound in a room. At a certain point, the sound waves coming directly from the speaker (without reflecting from the walls) create an intensity level of 75.1 dB. What is the total intensity level
assume the earth to be sphere of a uniform density a what is its rotational energy? take the radius of the earth to be
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