The energy of a substance is defined as the capacity to do work.The energy may be possessed by the body in various forms.It may be kinetic,potential,magnetic.electric etc.

a- The energy can be transformed from one form to another form.It is called energy conversion.

c-The power defined as the consumption of energy per unit time.

$Mathematically\ power\ P=\frac{E}t} =\frac{W}{t}$

Here E is the energy and W is the work done,t is the time.

d-The S.I unit of energy is Joule[J].

Hence the correct answer to the question is b. the ability to do work

6 0

3 years ago

Read 2 more answers

HURRY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Levart [38]

It is an example of "Elastic Potential Energy"

In short, Your Answer would be Option C

Hope this helps!

5 0

3 years ago

Find the Cartesian components of force PP acting in the x, y, and z directions given P=50.0 NP=50.0 N, α=143.5∘α=143.5∘, β= 70.0

BlackZzzverrR [31]

Answer:

vec(F) = [ -40.193 i + 17.101 j + 24.317 k ]

Explanation:

Given:

-The force P = 50.0 N

- Angle with x-axis α = 143.5

- Angle with y-axis β = 70.0

- Angle with z-axis γ = 60.9

Find:

Find the Cartesian components of force P acting in the x, y, and z directions,

Solution:

- The Force vector in the Cartesian coordinate system is given by the dot product of the Force P and the unit vector in its direction.

F.unit(u) = vec(F)

- Where, the unit vector is defined as:

unit (u) = [ cos(α) i + cos(β) j + cos(γ) k ]

- Using the given unit angles α , β, and γ compute unit (u):

unit (u) = [ cos(143.5) i + cos(70) j + cos(60.9) k ]

unit (u) = [ -0.80386 i + 0.34202 j + 0.48634 k ]

- The force vector is:

vec(F) = 50.[ -0.80386 i + 0.34202 j + 0.48634 k ]

vec(F) = [ -40.193 i + 17.101 j + 24.317 k ]

4 0

4 years ago