The meaning of work in physics is different from that used in everyday life , Work does not mean that a tough task is done , In physics , there are two conditions for work to be done which are
the acting force and the displacement in the direction of the force .
What two factors determine the amount of work done?
Answer Expert Verified
1) The force applied to the particular object. 2) The exact distance in which the body is displaced.
What factors determine the amount of work done?
In summary, work is done when a force acts upon an object to cause a displacement. Three quantities must be known in order to calculate the amount of work. Those three quantities are
force, displacement and the angle between the force and the displacement
.
What two factors determine power?
- Sample Size. Power depends on sample size. Other things being equal, larger sample size yields higher power. …
- Variance. Power also depends on variance: smaller variance yields higher power. …
- Experimental Design.
Do you do work when you raise the ball to 1 meter height?
Do you do work when you raise the ball to 1 meter height? How do you know? Yes.
Work is force times distance
, and in this case the force is exerted on the ball by your hand to raise the ball a distance of 1 meter.
What is work done formula?
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
.
How do you calculate work?
The formula for work is ,
work equals force times distance
. In this case, there is only one force acting upon the object: the force due to gravity. Plug in our given information for the distance to solve for the work done by gravity.
What is work and its types?
Work is a scalar quantity and is the product of two vector quantities. Depending on the value of q, there are three types of work:
When q = 0°, work is said to be positive
. Stretching of the spring is an example of positive work as the force is acting in the direction of displacement of the spring.
What 4 factors affect the power of a test?
The 4 primary factors that affect the power of a statistical test are
a level, difference between group means, variability among subjects, and sample size
.
What factors increase power?
- Significance level (or alpha)
- Sample size.
- Variability, or variance, in the measured response variable.
- Magnitude of the effect of the variable.
What increases power in a study?
Using
a larger sample
is often the most practical way to increase power. … Improving your process decreases the standard deviation and, thus, increases power. Use a higher significance level (also called alpha or α). Using a higher significance level increases the probability that you reject the null hypothesis.
How do you calculate GPE?
Gravitational potential energy changes into kinetic energy. The equation for gravitational potential energy is
GPE = mgh
, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 on Earth), and h is the height above the ground in meters.
Is work done by gravity when lifting an object?
When an object is lifted or projected upward, work must be
done against the resistance from gravity
, inertia and air resistance. If the object is moving upward at constant velocity, the work done by gravity is simply the force of gravity times the displacement.
What is the unit of GPE?
gravitational potential energy is measured in
joules (J)
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 work done Unit?
One joule
is defined as the amount of work done when a force of one newton is exerted through a distance of one meter. 1 joule of work = 1 N of force x 1 m of distance. In the English system of units, where force is measured in pounds, work is measured in a unit called the foot-pound (usually abbreviated ft-lb).
