The 20-lb cabinet is subjected to the force F = (3 + 2t) lb, where t is in seconds. If the cabinet is initially moving down the

We are required to find the charge-to-mass ratio.

In this scenario, the principles of momentum conservation can be applied since there are no external forces acting on the system. Consequently, the conservation of momentum principle is applicable here. After the bird lands on it, both the bird and the bark will have a unified final speed. Thus, this final speed will be 1 m/s.

K=E[(m+M)/M] Kmin=4.4

Answer:

θ = 61.3°

Alicia must swim at an angle of 61.3°

Explanation:

Parameters given include:

Width of the river = 100 m

Alicia's speed in still water = 2.5 m/s

Speed of river's current = 1.2 m/s

The angle she needs to swim can be determined by combining the velocities, taking into account the current's influence.

Her swimming speed aimed against the current must offset the current's velocity;

2.5cosθ - 1.2 = 0

2.5cosθ = 1.2

cosθ = 1.2/2.5

θ = cosinverse(1.2/2.5)

θ = 61.3°

The alteration in potential energy is  

In the query, it is stated that

  The intensity of the uniform electric field equals

     The distance the electron covers is  

Typically, the force exerted on this electron is expressed mathematically as

     

Where F signifies the force and  q represents the charge of the electron, which is a fixed value of

    Thus  

     

     

Generally, the work-energy theorem is mathematically framed as

         

Where W denotes the work done on the electron by the electric field and    is the change in kinetic energy

Additionally, work done on the electron can also be described as

       

Where   assuming that the electron's movement aligns with the x-axis  

        So

             

Inserting values

         

         

According to the conservation of energy

       

Where signifies the change  in  potential energy  

Thus