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A 1.5 kilogram projectile launched at some angle leaves the ground with kinetic energy totally 250 joules at the highest height, its kinetic energy is 105 joules. To what vertical height did the projectile rise?
A proton is placed in uniform electric field that is directed downward and has a magnitude of 5.0 N/C. What is the magnitude and direction of the electric force experience by the proton?
the energy used by an electric iron for 1 minute is 33 kJ, at a voltage of 220 volts. How large the current is in the electric iron?
Laboratory report on determination of unknown resistance by potentialmeter
A locomotive of 60 tone mass pulls some carriages of total mass 240 tones a distance of half a kilometer up a 1 in 200 incline with an acceleration of 0.2m/s. The overall rolling resistance is 5% of normal reaction. What is the total work done
A 0.500 cm diameter plastic sphere, used in a static electricity demonstration, has a uniformly distributed 40.0 pC charge on its surface. what is the potential near its surface?
Find the electric field midway between a 2-μC point charge wich are 2.5m apart.
Two charges are found to be 0.25 m apart. The charge of the first is thrice the charge of the second. If the magnitude of the second charge is 2 uC, find the force experienced by the first charge due to the second charge.
Two charges are found to be 0.20 m apart. The charge of the first is twice the charge of the second. If the magnitude of the second charge is 1 nC, find the force experienced by the first charge due to the second charge.
The potential at the surface of a sphere (radius R) is given by
V_{0}=k \cos 6 \theta
V0
=kcos6θ ,
where k is a constant. Find the potential inside and outside the sphere, as well as the surface charge density σ (θ) on the sphere. (Assume there’s no charge inside or outside the sphere.)
