Answer:
What is the normal force on the object (draw a diagram if needed)
784 N
How much force is required to get the object to start to move from rest (max static friction)?
470.4 N
When the object starts moving, what is the force of kinetic friction?
274.4 N
If the moving object has a tension force of 300N to the right pulling it, what is the net force on the object in the horizontal direction? 784 N
What is the acceleration (with direction) of the object based on your answer for part d? Remember that a = net force/m.
Explanation:
The resistance R of a wire is given by:

where

is the resistivity of the material
L is the length of the wire
A is the cross-sectional area of the wire.
For the wire in the problem, the resistivity is (copper resistivity)

. The length of the wire is L=1.3 m, while the cross-sectional area is

so the resistance of the wire is:
Answer:
0
Explanation:
Since momentum is given by:

Therefore momentum is a vector quantity in the direction of velocity.
- Inelastic collision is the type of collision in which the masses combine after collision and start moving in the direction of the greater momentum but here in this case we have the momentum equal and opposite in direction.
<u>This case can be described mathematically as:</u>

since the mass and velocity are equal:

net momentum:

Answer:
C)It would require more energy to change solid water into liquid water because there are more molecules in this larger piece of ice.