Recent content by amanara

Homework Statement 1. Two forces of equal magnitude are acting on a particle along two different directions. Let \theta be the angle between them. If direction of one vector is reversed , the magnitude of resultant is halved. Find tan\theta. 2.The resultant of the two vectors having...

but , the ring should also expand inside according to thermal expansion.

There is a metal ball and a metal ring , through which the metal ball can pass easily. But when the metal ball is heated , it can't pass through the metal ring. What will happen if metal ring is heated?(keeping metal ball normal)

Help on these problems- 1. If there is a charge then it has its own electric field. Now infinity is the area outside the electric field. This means a charge outside the electric field i.e at infinity , will not have any effect due to that charge. But by the formula F = kQ/rsq , there should be...

good guess but not correct

come on ask questions , I'll help.

Tell me how to solve both of them and the answers.

The Story It was 1st October, Matt, Cherry, and the 2 new detective girls, Amanda and Sylvia from Redrum University decided to give them a break from all kind of murder cases happened around them. Sylvia suggested they have a vacation at a beach which is not far away from where their...

1. A fire in a building B is reported on telephone to two fire stations P and Q , 20 km apart from each other on a straight road. P observes that the fire is at an angle of 60 degrees to the road and Q observes that it is at an angle of 45 degrees to the road. Which station should send its team...

but what if the object distance is not equal to image distance?

Prove how focus of a spherical mirror = Radius of curvature/2