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A stone is dropped from the roof of a high building. A second stone is dropped 2.50 s later. How far apart are the stones when the second one has reached a speed of 10.0 m/s? (b)A fugitive tries to hop on a freight train traveling at a constant speed of 5.0 m/s. Just as an empty box car passes him, the fugitive starts from rest and accelerates at a = 3.5 m/s^2 to his maximum speed of 8 m/s.
(a) How long does it take him to catch up to the empty box car?
(b) What is the distance traveled to reach the box car?
A student sits on a rotating stool holding two 3.9-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
What is the magnitude of an electric field in which the electricforce it exerts on a proton is equal in magnitude to the proton's weight?
When the tungsten filament in a 60 W, 120 V light bulb reaches 2010degrees C, 60 W of electric power is used to produce light andheat. Find the current through the filament under these conditions which are established very shortly after the light i..
An air-filled toroidal solenoid has a mean radius of 14.0cm and a cross-sectional area of 6.80cm2. How many turns does the winding have
A point source emits 86.9 W of sound isotropically. A small microphone intercepts the sound in an area of 0.231 cm2, calculate the power intercepted by the microphone
A jelly donut is dropped from a height of 1m above the big belly of a horizontal couch potato. How high did it rise on its first bounce
An object is dropped from rest into a pit, and accelerates due to gravity at roughly 10 m/s2. How much deeper is the second pit, compared to the first pit
Water at 100 degrees is flowing through a long pipe of radius 1rapidly enough so that we may assume that the temperature is 100 at all points. A t=0, the water is turned off and the surface of the pipe is maintained at 40 degrees from then on (neglec..
An atom in a metastable state has a lifetime of 6.20 ms. What is the uncertainty in energy of the metastable state
An AC voltage with an amplitude of 114 V is applied to a series combination of a 247 ?F capacitor, Calculate the power dissipated by the circuit at a frequency of 60.0 Hz
The howler monkey is the loudest land animal and can be heard upto a distance of 2.5 km. The acoustic power emitted by the howler, in mW is
You are driving into St. Louis, Missouri, and in the distance you see the famous Gateway-to-the-West arch. how far (in kilometers) are you from the base of the arch
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