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When a ball is thrown upward, it spends the same amount of time on the way up as the way down- as long as air resistance can be ignored. If aur resistance is taken into account, is the time on the way down the same as, greater than, or less than the time on the way up? Explain
when a potential difference of 156 v is applied to the plates of a parallel-plate capacitor the plates carry a surface
An object is placed 45 cm from a concave mirror of radius 92 cm. (a) Find the location of the image. (Enter in cm. Use a negative number if the image is behind the mirror) cm (b) What is the magnification of the mirror? Is the image real or virtual? ..
the size of the hydrogen atom grows in proportion to n2 where n is the principal quantum number. for the atom in the n
A proton travels with a speed of 4.90 106 m/s at an angle of 57° with the direction of a magnetic field of magnitude 0.160 T in the positive x-direction. determine the magnitude of the magnetic force on the proton
Two spheres, one with mass M, radius R, and the other mass 2M,radius 3R, are released from rest at a distance of 12R between their centers. What is the velocity of each sphere when they collide?
A lens is used as a magnifier to view an ant placed on a piece of paper. The image of the ant is 15cm from the lens and the magnification factor is 3. How far from the paper (the ant) is the lens
The position of an object as a function of time is (3.2t + 1.8t^2)i + (1.7t + 2.4t^2), Find the magnitude and direction of the object
Find the escape velocity for a partical on a spherical planet of radius R and mass M. What is the numerical value for the Earth? the moon? the sun?
A 6.0 μF air capacitor is connected across a 100 V battery. After the battery fully charges the capacitor, it is immersed in transformer oil (K = 4.5). How much additional charge flows from the battery, which remained connected during the process?
A charged particle of mass .0020kg is subjected to a 5.0T magnetic field that acts at a right angle to its motion. what is the magnitude of the charge on the particle
Measurements of the radioactivity of a certain isotope tell you that the decay rate decreases from 8305decays per minute to 3080 decays per minute over a period of 5.00 days
The current in a 4.70 mH inductor decays over time according to the following function, What is the induced emf across the inductor at t= 5.00 ms
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