Electric Circuits Answers

three balls A,B and C have 10 g, 20 g and 30g mass respectively. The ball A is released from rest and ball B and C are thrown straight upward with initial speed of 5 m /s and 10 m/s upward respectively. the motions of all masses are fall

A uniform electric field of 8 V/m is directed in the negative x direction. If one moves a distance of 2.7 meters in the positive x direction, how much does the electric potential change in Volts?

A dead battery is charged by connecting it to the live battery of another car with jumper cables (see figure). (Take R = 2.03 Ω and r = 0.09 Ω. For this problem, if your answers are used in any subsequent calculations, make sure to base your calculation on the rounded values
http://www.webassign.net/sercp9/18-p-026-alt.gif
(a) Determine the current in the starter.
Incorrect: Your answer is incorrect. A

(b) Determine the current in the dead battery.
Incorrect: Your answer is incorrect. A

calculate the charge of 1500 electrons

In determining the specific heat of a new metal alloy 150 gm of substance is heated to 400 degrees C and then placed in a 200 gm calorimeter cup containing 400 gm of water at 10 degrees C. IF the final temperature of mixture is 30.5 degree C , What is the specific heat of alloy?

Two pucks have identical masses. The frequency of the spark timer is 20sparks/second. Puck 2's spark timer was damaged by the collision and didn't leave a trace after the collision. Assuming conservation of momentum, what is the speed and direction of puck 2 after the collision.

what kind of voltage a simple transformer gives? (a) AC (b) DC (c) induced

Which method can be used for absolute neasuremeant of resistances:
a)ohm's law method b)wheatstone bridge method
c)releigh method d)none of these