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A running man has half the kinetic energy that a boy of half hismass has. The man speeds up by 1.00 m/s and then has the same kinetic energy as theboy. What were the original speeds of man and boy?
a spider crawling across a table leaps onto a magazine blocking its path. the initial velocity of the spider is 0.860
A large fraction of the ultraviolet (UV) radiation coming from the sun is absorbed by the atmosphere. The main UV absorber in our atmosphere is ozone, O 3 rm O_3. In particular, ozone absorbs radiation with frequencies around 9.38×1014Hz rm Hz..
A 3.50-µF capacitor is fully charged by being connected to a 6.0-V battery. The fully charged capacitor is then connected to a 0.250-H inductor.
a block of mass m5.0kg is pulled along a rough horizontal surface by a rope as sketched. the tension in the rope is 40n
A 2.0 meter long string that has a mass of 24.0 grams is under 45 N of tension. What is the maximum speed of a particle on the string
Two large metal plates of area 0.5 m2 face each other. They are 4.8 cm apart and have equal but opposite charges on their inner surfaces. what is the magnitude of the charge on each plate
A particular heat engine has a useful power output of 4.40 kW and an efficiency of 30.0%. The engine expels 7200 J of exhaust energy in each cycle , Find the time interval for each cycle
A 24.0V battery is in series with a switch, a 0.30Hinductor, and a 24? resistor. Find the potential differences across the inductor at t=3
In a parking lot, an SUV of mass 2000 kg driving at 5 m/s collides head on with a sports car of mass 1000 kg driving in the opposite direction. Determine the velocity of the sports car before the collision
A five-sided object, whose dimensions are shown in the drawing, is placed in a uniform magnetic field. Determine the magnetic flux through the slanted side
where the woman falls down from a great height, and comes to a full stop. For which case is the change in the woman's momentum the largest? For which case is the Impulse the largest?
The far point of a nearsighted person is 8.5 m from her eyes, and she wears contacts that enable her to see distant objects clearly. How high is the image formed by the contacts
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