1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aleks04 [339]
3 years ago
9

What is the formula to used to find work?

Physics
1 answer:
liubo4ka [24]3 years ago
7 0

Answer:

W = F × D

Explanation:

Hi there! I'm glad I was able to help you!

The formula we use to calculate work is shown below:

W = F × D

W = WORK

F = FORCE

D = DISTANCE

For example, let's say you're holding a box with both of your hands, keeping it still. Sure, holding the box requires some amount of effort, no matter the weight or size, but since you aren't moving the box up and down, no work is being applied.

If you slowly raise the box into the air, however, work is being done on the box. It still requires effort, but you're applying force on the box, raising it x amount of distance into the air.

This is where the variables W, F and D come from.

I hope this helped you! Comment below if I can assist with anything else! :)

You might be interested in
A 780g, 50-cm-long metal rod is free to rotate about a frictionless axle at one end. While at rest, the rod is given a short but
Semmy [17]

Answer:

9.6 rad/s

Explanation:

L = length of the metal rod = 50 cm = 0.50 m

M = Mass of the long metal rod = 780 g = 0.780 kg

Moment of inertia of the rod about one end is given as

I = \frac{ML^{2}}{3} = \frac{(0.780)(0.50)^{2}}{3} = 0.065 kgm^{2}

F = force applied by the hammer blow = 1000 N

Torque produced due to the hammer blow is given as

\tau = \frac{FL}{2}

\tau = \frac{(1000)(0.50)}{2}

\tau = 250 Nm

t = time of blow = 2.5 ms = 0.0025 s

w = Angular velocity after the blow

Using Impulse-change in angular momentum, we have

I w = \tau t\\(0.065) w = (250) (0.0025)\\w = 9.6 rads^{-1}

5 0
3 years ago
A uniform thin rod of length 0.11 m and mass 4.6 kg can rotate in a horizontal plane about a vertical axis through its center. T
ale4655 [162]

Answer:

Explanation:

This problem is based on conservation of rotational momentum.

Moment of inertia of rod about its center

= 1/12 m l² , m is mass of the rod and l is its length .

= 1 / 12 x 4.6 x .11²

I = .004638 kg m²

The angular momentum of the bullet about the center of rod = mvr

where m is mass , v is perpendicular component of velocity of bullet and r is distance of point of impact of bullet fro center .

5 x 10⁻³ x v sin60 x .11 x .5  where v is velocity of bullet

According to law of conservation of angular momentum

5 x 10⁻³ x v sin60 x .11 x .5 = ( I + mr²)ω , where ω is angular velocity of bullet rod system and  ( I + mr²) is moment of inertia of bullet rod system .

.238 x 10⁻³ v = ( .004638 + 5 x 10⁻³ x .11² x .5² ) x 12

.238 x 10⁻³ v = ( .004638 + .000015125 ) x 12

.238 x 10⁻³ v = 55.8375 x 10⁻³

.238 v = 55.8375

v = 234.6 m /s

4 0
3 years ago
What is the circle of least confusion?
Artist 52 [7]

Answer and Explanation:

In optics, a CoC(Circle of Confusion) is defined the minimum cross section of a paraxial bundle of rays made by a lens which is sphero-cylindrical type and can be viewed as an optical spot, which do not converge perfectly at the focus  while a point source is being imaged due to spherical aberration.

The Circle of Confusion is also referred to as circle of indistinctness or a blur spot

5 0
4 years ago
At which of the following angles will the sunlight received at a location on Earth fall over the smallest area? 80° 65° 40° 10°
Veronika [31]

Answer: D. 10 degree angle

All places on Earth received sunlight but in different angles. The smallest area, which is the north of the Arctic Circle receive sunlight at a 10 degree angle because of the tilted axis of rotation. Usually, the sun’s rays are the most intense at the equator and the least intense at the poles as Earth revolves around the sun.

 

7 0
3 years ago
Read 2 more answers
580 nm light shines on a double slit with d=0.000125 m. What is the angle of the third dark interference minimum(m=3)?
sveta [45]

Answer:

0.796 degree

Explanation:

We are given that

Wavelength=\lambda=580 nm=580\times 10^{-9} m

1nm=10^{-9} m

d=0.000125 m

We have .to find the angle of the third dark interference minimum=3

sin\theta=\frac{m\lambda}{d}

Using the formula

sin\theta=\frac{3\times 580\times 10^{-9}}{0.000125}

sin\theta=0.0139

\theta=sin^{-1}(0.0139)

\theta=0.796^{\circ}

Hence, the angle of the third dark interference minimum=0.796 degree

7 0
3 years ago
Read 2 more answers
Other questions:
  • A car goes from 80 km/h to 20 km/h in 0.5 h. What is the acceleration in km/h2?
    9·2 answers
  • When a certain ideal gas thermometer is placed in water at the triple point, the mercury level in the right arm is 846 mm above
    6·2 answers
  • The force of gravity acting on a child mass on earth is 190 N what is the child Mass
    10·1 answer
  • Calculate the centripetal force exerted on the Earth by the Sun. Assume that the period of revolution for the Earth is 365.25 da
    11·1 answer
  • A man ties one end of a strong rope 8.17 m long to the bumper of his truck, 0.524 m from the ground, and the other end to a vert
    15·1 answer
  • A heavy dart and a light dart are launched vertically by identical ideal springs. Both springs were initially compressed by the
    11·1 answer
  • Can someone help pls!!
    11·1 answer
  • Which following is step two of the five step worksheet creation process
    6·1 answer
  • A 10-g bullet moving horizontally with a speed of 2.0 km/s strikes and passes through a 4.0-kg block moving with a speed of 4.2
    7·1 answer
  • You are given two converging lenses to build a compound microscope. Lens A has focal length 0.50 cm and lens B has focal length
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!