Answer:
a) The electric field at that point is newtons per coulomb.
b) The electric force is newtons.
Explanation:
a) Let suppose that electric field is uniform, then the following electric field can be applied:
(1)
Where:
- Electric field, measured in newtons per coulomb.
- Electric force, measured in newtons.
- Electric charge, measured in coulombs.
If we know that and , then the electric field at that point is:
The electric field at that point is newtons per coulomb.
b) If we know that and , then the electric force is:
The electric force is newtons.
Answer:
Spring cannot return to its original, since a part of its deformation is <u>plastic</u>, not <u>elastic</u>.
Explanation:
Physically speaking, stress is equal to the axial force divided by effective transversal area of spring. In addition, springs have usually a linear relationship between stress and strain in <u>elastic region</u>, since they are made of ductile materials. Axial force is directly proportional to axial stress, which is also directly proportional to axial strain.
Then, if force is greater than force associated with elastic limit of the spring, then spring cannot return to its original, since a part of its deformation is <u>plastic</u>, not <u>elastic</u>.
Answer:
IV what is it's potential energy at the maximum height
The heat capacity is given by the expression:
When the is measured in the calorimeter, we obtain a value, and since we know the mass of the material and we control the change in , we can then determine the specific heat "C" by simply remplazing in the expression.
K.E.= 1/2 x MV^2 = 1/2 x 40(kg) x (25x25) =12500J