Mathematically, the concept of work done W equals the force f times the distance (d), that is W = f. d and if the force is exerted at an angle θ to the displacement, then work done is calculated as
W = f . d cos θ
.
What is d time formula?
| s Speed | d Distance | t Time |
|---|
What is the formula for calculating work done?
Work can be calculated with the equation:
Work = Force × Distance
. The SI unit for work is the joule (J), or Newton • meter (N • m). One joule equals the amount of work that is done when 1 N of force moves an object over a distance of 1 m.
What is current formula?
The current is the ratio of the potential difference and the resistance. It is represented as (I). The current formula is given as
I = V/R
. The SI unit of current is Ampere (Amp).
What is the formula for energy?
| What is Work, Energy and Power? | Work | Energy | Definition Energy is defined as the capacity to do work. | Formula The energy stored in an object due to its position and height is known as potential energy and is given by the formula: P.E. = mgh |
|---|
What is formula of height?
How to Calculate Height By Geometry. … So, “
H/S = h/s
.” For example, if s=1 meter, h=0.5 meter and S=20 meters, then H=10 meters, the height of the object.
What is the formula of distance in science?
The distance between the points (a,b) and (c,d) is given by
Square root of√(a − c)
2
+ (b − d)
2
. In three dimensional space, the distance between the points (a, b, c) and (d, e, f) is Square root of√(a − d)
2
+ (b − e)
2
+ (c − f)
2
.
What is formula for mass?
Mass is always constant for a body. One way to calculate mass:
Mass = volume × density
. Weight is the measure of the gravitational force acting on a mass.
What is resistivity formula?
Resistivity, commonly symbolized by the Greek letter rho, ρ, is quantitatively equal to the resistance R of a specimen such as a wire, multiplied by its cross-sectional area A, and divided by its length l;
ρ = RA/l
. … Thus, in the metre-kilogram-second system, the unit of resistivity is ohm-metre.
What is Ohm’s law state?
Ohm’s law states that
the current through a conductor is proportional to the voltage across the conductor
. … V=IR where V is the voltage across the conductor and I is the current flowing through it.
What is current unit?
The SI unit of current is
ampere
which measures the flow of electric charge across a surface at the rate of one coulomb per second. Since the charge is measured in coulombs and time in seconds, so the unit is coulomb/Sec (C/s) or amp.
What is E mc2 used for?
Mass can be converted into pure energy
.
This is the second meaning of the equation, where E = mc
2
tells us exactly how much energy you get from converting mass. For every 1 kilogram of mass you turn into energy, you get 9 × 10
16
joules of energy out, which is the equivalent of 21 Megatons of TNT.
What is the free fall formula?
The formula for free fall:
Imagine an object body is falling freely for time t seconds, with final velocity v, from a height h, due to gravity g. It will follow the following equations of motion as:
h= frac{1}{2}gt^2
.
v2= 2gh
.
What is the height of cylinder?
It is calculated with the help of the formula,
πr
2
h
, where r is the radius of the circular base, h is the height of the cylinder, and π(Pi) is a mathematical constant with an approximate value of 3.14.
How do you find maximum height reached?
- if α = 90°, then the formula simplifies to: hmax = h + V02 / (2 * g) and the time of flight is the longest. …
- if α = 45°, then the equation may be written as: …
- if α = 0°, then vertical velocity is equal to 0 (Vy = 0), and that’s the case of horizontal projectile motion.
What is distance Class 9 formula?
Speed = distance /Time. By rearranging the formula for speed we can arrive at the formula for distance.
Distance = speed x time
.
d = s x t
.
d
is the distance travelled by the object in metres(m)
