I NEED HELP ASAP!!!

now suppose that we have attached not just two springs in series, but N springs. Write an equation that expresses the effective

sammy [17]

Answer:

$k_{eq} = \frac{k}{N}$

Explanation:

For this exercise let's use hooke's law

F = - k x

where x is the displacement from the equilibrium position.

x = $- \frac{F}{k}$

if we have several springs in series, the total displacement is the sum of the displacement for each spring, F the external force applied to the springs

x_ {total} = ∑ x_i

we substitute

x_ {total} = ∑ -F / ki

F / k_ {eq} = -F $\sum \frac{1}{k_i}$

$\frac{1}{k_{eq}} = \frac{1}{k_i}$ 1 / k_ {eq} = ∑ 1 / k_i

if all the springs are the same

k_i = k

$\frac{1}{k_{eq}} = \frac{1}{k} \sum 1 \\$

$\frac{1}{k_{eq} } = \frac{N}{k}$

$k_{eq} = \frac{k}{N}$

6 0

3 years ago

What will happen for Potential energy of a body if the mass is dobled keeping height constant

4vir4ik [10]

<h3>Given :-</h3>

The mass of the body is doubled
The height of the body is constant

<h3>Solution :- </h3>

We know that ,

Potential energy = mgh

Therefore,

We can say that,

PE is directly proportional to Mass of the body

According to the question,

PE of the body = 2m * g * h. ...eq( I)

From (I) , we can conclude that, If mass of the body get doubled then its PE will also be doubled .

4 0

3 years ago

you're reading from the journal of a European explorer from the early 1600s. In one passage, the explorer describes itting on th

Zepler [3.9K]

Answer: horse latitudes

Explanation:

8 0

3 years ago

Read 2 more answers

A submarine deep underwater releases a bubble of air. The total pressure at this depth is P. The bubble has diameter, D, and abs

Sunny_sXe [5.5K]

Answer:

P V = n R T ideal gas equation

P2 V2 / P1 V1 = T2 / T1

V2 / V1 = T2 / T1 * P1 / P2 = T2 P1 / (T1 P2)

V2 / V1 = (1.17 T1) / T1 * (P1 / .22 P1) assuming absolute temp as 1.17 P1

V2 / V1 = 1.17 / .22 = 5.32

V = 4/3 pi R^3 = 4/3 pi (D/2)^3 = 4/3 pi D^3 / 8 = pi D^3 / 6

V2 / V1 = D2^3 / D1^3

D2 = (V2 / V1 * D1^3)^1/3

D2 = 5.32^1/3 * D = 1.75 D (D1 = D)

7 0

3 years ago

Which of the following statements are true for electric field lines? Check all that apply. Check all that apply. Electric field

Scilla [17]

Answer:

Electric field lines point away from positive charges and toward negative charges. True

Electric field lines are continuous; they do not have a beginning or an ending. False

Electric field lines can never intersect. True

Electric field lines are close together in regions of space where the magnitude the electric field is weak and are father apart where it is strong. False

At every point in space, the electric field vector at that point is tangent to the electric field line through that point. True

Explanation:

Electric field lines point away from positive charges and toward negative charges. Always the field lines go to negative charges and leave from positive charges.

Electric field lines are continuous; they do not have a beginning or an ending. False

Because the field lines starts at positive charges and ends in negative charges.

Electric field lines can never intersect. True

It can not intercept the field lines because in that point the the field would have two directions. Besides, in that point the real value of the field should be found adding both field lines.

Electric field lines are close together in regions of space where the magnitude the electric field is weak and are father apart where it is strong. False

This fact is opposite to that so the regions of space where the magnitude the electric field is weak the lines are father apart and where the field is strong the lines are close together.

At every point in space, the electric field vector at that point is tangent to the electric field line through that point. True

This statement correspond to the definition of the field line.

5 0

3 years ago