mohankumaroffl

The electrostatic force of repulsion between two positively charged ions carrying equal charge is 3.7 × 10-9 N, when they are separated by a distance of 5 Å. How much electrons are missing from each ion?

A negative charge Q1= -4 uC and a positive charge Q2= 10 uC arelocated on the axes of a coordinate system. Q1 is at a distance of.6 (left along the x axis) from point P, the origin of thecoordinate system. Q2 is at a distance of 0.8 m (up along the yaxis) from P.
What is the magnitude of the electric field point P? (I usedF=kQ1Q2/ r^2....I was wondering if you could tell me why this iswrong)
In what direction is the electric field at point P? pointing intowhich quadrant (I,II,III,IV)

A hollow metal sphere of radius 5 cms is charged such that the potential on its surface is 10 volts. The potential at the centre of the sphere is

1) zero

2) 10 volts

3) same as at a point 5 cms away from the surface

4) same as at a point 25 cms away from the surface  

Two point charges +q and –q are held fixed at (–d, o) and (d, o) respectively of a x-y coordinate system. Then

1) The electric field E at all points on the x-axis has the same direction

2) Electric field at all points on y-axis is along x-axis

3) Work has to be done in bringing a test charge from ¥ to the origin

4) The dipole moment is 2qd along the x-axis  

What is sum of first n integers?

52. How much heat is needed to raise the temperature of 50.0 g of water from 4.5°C to 83.0°C?

write full electron configurations in each element.
a. P
b. C
c. Na
d. Ar

Complete the full electron configuration for each element below.

Nitrogen (Z=7)

Chlorine (Z=17)

Sodium (Z=11)

Beryllium (Z=4)

Square root of 4 and describe how to get it

Describe how you could use inverse operations to solve the equation  .

Number 4 and 5 show all work

4) Suppose quantity s is a length and quantity t is a time. Suppose the quantities v and a are defined by and . (a) What is the dimension of v? (b) What is the dimension of the quantity a? What are the dimensions of (c)  , (d)  , and (e) ?

5) Consider the equation   where s is a length and t is a time. What are the dimensions and SI units of (a) a, (b) b, (c) c, and (d) d?

The two triangles are congruent. Find the value/measurement of Y. Explain your reasoning behind your answer.

A. 58.

B. 59.

C. 63.

D. 68.

Consider the parallelogram shown. What is the measurement of the angles below?

The lines I and M are parallel. What is the measurement/value of W? Explain your answer.

A. 35.

B. 65.

C. 70.

D. 110.