Physics
21Nov
An infinite sheet of charge is located in the y-z plane at x = 0 and has uniform charge denisity σ1 = 0.35 μC/m2. Another infinite sheet of charge with uniform charge density σ2 = -0.54 μC/m2 is located at x = c = 31 cm.. An uncharged infinite conducting slab is placed halfway in between these sheets ( i.e., between x = 13.5 cm and x = 17.5 cm).. 1)What is Ex(P), the x-component of the electric field at point P, located at (x,y) = (6.75 cm, 0)?. 2). What is σa, the charge density on the surface of the conducting slab at x = 13.5 cm?
buddy19
Physics
1 0
21Nov
A compound is a pure substance that is composed of more than one type of element. Which of the following statements is true of compounds?. . A.Compounds can be decomposed into their component parts through physical processes.. . B.There is only one type of compound, so they all have similar characteristics and compositions.. . C.Compounds have definite chemical compositions that can be described by chemical formulas.. . D.Compounds have properties which are identical to the properties of their component elements..
haleynp106
Physics
2 0
21Nov
21Nov
1. How does an area’s weather differ from the area’s climate? (1 point). A.Weather involves temperature and precipitation and climate involves only temperature.. B. An area’s weather depends on where it is located on Earth and the area’s climate does not.. C.An area’s weather does not change very much and an area’s climate changes many times.. D.Weather is the area’s day-to-day conditions and climate is the area’s average conditions.. 2. All of the following factors contribute to Earth’s climate EXCEPT (1 point) . latitude.. longitude.. transport of heat by winds.. shape and elevation of landmasse
diane101
Physics
2 0
21Nov
Does the thickness of a wire affect the strength of an electromagnet?
SandieCatillo296
Physics
1 0
21Nov
Fill in the Blank. . Complete each statement.. . 5. The results of Rutherford’s gold foil experiment demonstrated that the ____________________ occupies a very small amount of the total space inside an atom. (1 point). . 6. If element Q has 11 protons, its atomic ____________________ is 11. (1 point). . 7. The region in which an electron is most likely to be found is called a(an) ____________________. (1 point). . 8. An atom in which an electron has moved to a higher energy level is in a(an) ____________________ state. (1 point). .
nileswalisavery
Physics
1 0
21Nov
Which of the following is NOT one of the main ideas of physical science?. A. The universe is very old and very large. . B. Forces cause changes in motion. . C. Energy can be transferred from one form to another, but it can never be destroyed. . D. One of the main branches of natural science is biology.
PattySances762
Physics
1 0
21Nov
In a laboratory experiment on friction, a 136- block resting on a rough horizontal table is pulled by a horizontal wire. The pull gradually increases until the block begins to move and continues to increase thereafter. the figure shows a graph of the friction force on this block as a function of the pull.. . What would the graph look like if a 136 brick were placed on the box, and what would be the coefficients of friction be in that case?
laurastaki
Physics
1 0
21Nov
Which, if any, of the following statements about electric field lines is/are true? A.The electric field is always perpendicular to the surface outside of a conductor. B.If an electron were placed on an electric field line, it would move in a direction perpendicular to the field. C. Electric field lines originate on positive charge and terminate on negative charge. D.It is possible for two electric field lines to cross each other. E.If an electron and a positron were in the presence of a very strong electric field, they would move away from each other. F.It is not possible for the electric field to ever be zero. G.If a proton were placed on an electric field line, it would move in a direction anti-parallel to the field.
Acidhound2k
Physics
1 0
21Nov
Two parallel plates, each having area A = 3557 cm2 are connected to the terminals of a battery of voltage Vb = 6 V as shown. The plates are separated by a distance d = 0.59 cm. The battery is now disconnected from the plates and the separation of the plates is doubled ( = 1.18 cm). What is the energy stored in this new capacitor?
Lecy315
Physics
1 0