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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.)
ACTIVITY 1.1. WRITE THE NUCLEAR REACTION INVOLVED IN THE SYNTHESIS OF EACH OF THE FOLLOWING NEW ELEMENTS.
A.Curium(Z=96) was formed by reacting Pu-239 with alpha particles ⁴²He,it has a half -life of 162 days.
B.Mendelevium(Z=101) was formed by reacting En-253 with alpha particles.
C.Meitnerium(Z=109) was formed by cold fusion which involves the combination on Bi and Fe nuclides at ordinary temperature.
Find Pluto's
a) minimum distance from the sun
b) maximum distance from the sun
Note:
G= 6.67x10-11 Nm2/kg2
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