Other Physics Answers

11. A test charge produced an electric field, E, at point 3 m away from the charge. The point where the field is half its original values is located at A. 1.5 m from the charge C. 4.5 m from the charge B. 6 m from the charge D. at the point of charge 12. The electric field of a body is directly related to its ________. A. momentum B. kinetic energy C. potential energy D. charge it carries 13. Charge q1 (26.0 µC) and q2 (-47.0 µC) experienced an electrostatic force of 5.70 N between them at a distance of ____ A.1.39 m B.1.93 m C.2.14 x 10-19 D.1.464 x 10-8

10. The electric flux through the surface at the right is ____ A. zero B. positive C. negative D. unknown

For Nos. 7 to 9, refer to the diagram below: 7. A positively charged rod was brought near to a metallic plate; what is the type of charge induced along the side facing the rod? A. positive B. negative C. neutral D. depends on number of charges 8. If the positively charged rod was touched on the neutral metallic plate, what is the charge of the plate? A. same B. negative C. positive D. depends on number of charges 9. After the positively charged rod is placed near the plate, a grounded wire was attached. What is the charge of the plate after the wire is removed? A. .negative B. neutral C. positive D. depends on number of charges 

5. Three spheres were brought together. When Spheres A and B are brought together, they attract. When spheres B and C are brought together, they also repel. Which of the following is true? A. Spheres A & C have same signs C. Spheres A & B have similar signs B. Spheres B & C have same signs D. Spheres A & C have opposite signs 6. The first object has a charge of +3nC, and the second object has a charge of 6 n C. Which is true about the electric forces between these objects? A. F1on2= 2F2on1 B. 3F1on2= 6F2on1 C. -6F1on2=2F2on1 D. F1on2=F2on1

. The diagram below shows the behavior of the electroscope before and after a positively charged rod is placed near the electroscope knob. This tells us that the movement of electrons is from ____. A. Rod to leaves C. Knob to leaves, then back to knob B. Leaves to knob D. Leaves to knob, then back to leaves 2. A glass rod was positively charged when rubbed with a silk cloth. The net positive charge is accumulated because the glass rod __________. A. loses protons B. loses electrons C. gains electrons D. loses electrons 3. Gravitational forces and electric forces are both ________________. A. forces with attractive and repulsive behaviors B. indirectly proportional to the square root of separation between bodies C. directly proportional to the product of the masses and charges D. decreasing when the distance between two bodies is decreasing

If A= 5i + 3j

B= 3i + 7j

C= 2i - 3j

Find A × B × C

when a object of mass 50kg is move from one place to another with an acceleration of 10=5^2 find the force use in moving that object from one place to another

The young modulus of a material of total extension 1.2m if the sites produced on performing SHM is 20N/M^2 of 4m of diameter length the wire lenght of the sites is, 6.5m if a mass of50kg is suspended on that wire to causes it to osclillate what is the period of oscillation and the angular frequency

Half the volume of the block immersed in water.what is the reading of the spring balance?(Density of water=1.0gcm^-3)

a. the temperature of 200g of water increases from 20 ⁰C to 50 ⁰C in 10 minutes. Calculate:

i. the amount of heat gained by the water

ii. the average rate at which the water is gaining heat

(specific heat capacity of water = 4200 J kg^{-1 0}C^-1)

b. Determine the amount of heat that must be removed from 1 kg of water at 40 ⁰C to convert it to ice at -5 ⁰C.

(Obtain any relevant data that you need from the internet. Cite the source of that data in your answer)