A dog is standing in the bed of a pickup truck. The bed is coated with ice, causing the force of friction between the dog and th
e truck to be zero. The truck is initially at rest, and then accelerates to the right, moving along a flat road. As seen from a stationary observer (watching the truck move to the right), the dog: A. moves to the right at the same rate as the truck, so it doesn't slide.
B. does not move left or right, but the back of the truck moves towards the dog.
C. moves to the right, but not as quickly as the truck is moving to the right, causing it to slide towards the back of the truck.
D. moves to the left, as the truck moves to the right, causing the dog to slide towards the back of the truck.
As the truck is moving towards right and there is no friction between the truck and dog, it experiences a psheudo force, so the dog moves towards left.
The period of a pendulum does not depend on the mass of the ball, but only on the length of the string. Two pendula with different masses but the same length will have the same period. Two pendula with different lengths will different periods; the pendulum with the longer string will have the longer period.
If a molecule is found to have four hybrid sp3 then we say that it has a <span>tetrahedral molecular geometry. thsi is the correct term to define this type of molecules. So your option would be C. Hope this is useful</span>
