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Two thin 80.0 cm rods are oriented at right angles to eachother. Each rods has one end at the origin of the coordinates, andone of them extends along the +x axis while the other extends alongthe -y axis (negative y axis). The rod along the +x axis carries acharge of -15.0 μc distributed uniformily along its length and theother rod carries +15.0 μC uniformily over its length. Find themagnitude and direction of the net electrical force that these tworods exert on an electron located at the point (40.0 cm, -40.0 cm).Use e = 1.60*10^-19C. What will be the potential at point Q 100 cmaway from the origin along the X axis.

When an atom is placed in a uniform external electric field E(ext),the energy levels are shifted - a phenomenon known as the Starkeffect (it is the electrical analog to the Zeeman effect). In thisproblem we analyze the Stark effect for the n=1 and n=2 states ofHydrogen. Let the field point in the z direction, so the potentialenergy of the electron is;

A wheel is attached to a fixed shaft, and the system is free torotate without friction. To measure the moment of inertia o thewheel-shaft system, a tape of negligible mass wrapped around theshaft is pulled with a known constant force F. When a length L oftape has unwound, the system is rotating with angular speedomega-naught. Find the momentum of the inertia of the system,I-naught.

Ans. clue. If F= 10N, L= 5m, omega-naught= .5 rad/sec, thenI-naught= 400kgm^2

Explain how an electric bell jar works

When moist air passes through a bed of silica gel, the .....

A) Dry bulb temperature of the air decreases

B) Dry bulb temperature of the air increases

C) Specific humidity of air increases.

D) It undergoes adiabatic saturation.

You will only receive credit if you answer all of the questions mentioned in paragraph format using a submission with a minimum of 250 words.

In your opinion are tobacco companies in any way responsible for the high number of deaths from lung cancer each year? Or is each person entirely responsible for his or her own behavior and health?

A simple magnifier for viewing postage stamps and other pieces of paper consists of a thin lens mounted on a stand. When this device is placed on a stamp, the stand holds the lens at the proper distance from the stamp for viewing. If the lens has a focal length of 11.5cm, and the image is to be at infinity. what is the angular magnification of the device.

Which undergoes the greatest change in momentum:

1 A baseball that is caught.

2. A baseball that is thrown.

3. A baseball that is caught and then thrown back, if all of the baseballs have the same speed just before being caught and just after being thrown?

A bullet is shot horizontally from a gun. If the bullet speed as it exits the muzzle is 325 m/s and the gun is 2.0 m above the ground

a. How long was a bullet in the air for?

b. How far did the bullet travel horizontally before it hit the ground?

c. What is the final velocity of the bullet?

A car drives straight off the edge of a cliff that is 58 m high. The police at the scene of the accident note that the point of impact is 0.136 km from the base of the cliff. How long did it take to hit the ground?

Which of the following elements has lowest melting point? 

(A) Titanium

(B) Sulphur

(C) Argon

(D) Zinc

The generator in an AC resistor circuit creates a maximum potential difference across the 175 O resistor of 243 V. What is the amplitude of the alternating current if the frequency of the generator is (a) 455 Hz? (b) 875 Hz?

Give the disadvantages of a direct current generator over alternating current generator.