By applying the principle of moments, find the value of F2

Answer:

I did not get it

Explanation:

what u r saying

Answer:

A. The magnets used to lift metal or cars in a salvage/junk yard

Explanation:

An electromagnet  is defined as a type of magnet which are made up of wires in coil shape. Magnetic field in these wires are produced by electric current.

An example of an electromagnet is magnets used to lift metal or cars in a salvage/junk yard because a crane is used in junkyard to lift metal in which crane is attached to a iron disc and when electricity is off, the disc move downwards and placed near required metal and switch on the electricity when disc reaches on metal or cars to be lifted. This electricity generates magnetism in the iron disc and attract metal or cars from the junkyard.

Hence, the correct answer is "A. The magnets used to lift metal or cars in a salvage/junk yard".

Answer:

i d k ok

Explanation:

Answer:

B. I DID IT AND GOT IT RIGHT

Explanation:

Answer:

It is B

Explanation:

i did this one

Answer:

5.55m/s

Explanation:

The vertical velocity of the ball just before it hits the floor is [v] = 4.42 m/s and  horizontal velocity of the ball just before it hits the floor is [u] = 6.6 m/s.

Projectile motion is an example of two dimensional motion.

Given is a ball rolls off a 1 m high table and lands on the floor 3 m away from the table.

Using the second equation of motion for the vertical motion -

S = ut + 1/2at²

S = 0 + 1/2at²

S = 1/2at²

t²= 2S/a

t² = (2 x 1)/9.8

t² = 2/9.8  

t² = 0.2040

t = 0.451

Now, the vertical velocity of the ball just before it hits the floor -

v = u + at

v = 0 + at

v = at

v = 9.8 x 0.451

[v] = 4.42 m/s

Now, using the second equation of motion for horizontal direction -

S = ut + 1/2at²

S = ut + 0

3 = u x 0.451

u = 3/0.451

[u] = 6.6 m/s

Which is also the horizontal velocity of the ball just before it hits the floor.

Therefore, the vertical velocity of the ball just before it hits the floor is [v] = 4.42 m/s and  horizontal velocity of the ball just before it hits the floor is [u] = 6.6 m/s.

To solve more questions on Projectile motion, visit the link below-

https://brainly.com/question/17547212

#SPJ2

Explanation:

Hooke's law is a law of physics that states that the force needed to extend or compress a spring by some distance scales linearly with respect to that distance—that is, Fₛ = kx, where k is a constant factor characteristic of the spring, and x is small compared to the total possible deformation of the spring.

Answer:

vasporisation

Explanation:

process used to change liquid to gass

Answer:

I believe it's Evaportation or another word would be Vaporisation.

Explanation:

hope this helps! ^^

Answer:

B. Tomatos reflect red light

Explanation:

The only reason colors exist is because the objects with color reflect all other light except for what they are portrayed as. White reflects all colors, and black absorbs all colors.

If you have any questions feel free to ask :)

Answer:

Explanation: the pigment atoms in the skin absorb photons of all energies except those that correspond to red wavelengths of light, which they reflect back to your eye.

B is more likely the answer

Answer:

Kinetic energy, form of energy that an object or a particle has by reason of its motion. ... Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass.

Credits to britannica.com

Explanation:

Hope this helps

Kinetic energy of an object is the energy that it possesses due to its motion.

Answer:

B- 7

Explanation:

its how many elements, you don't need the amound of each element. you have to count the number of capitalized letters. Hope this helps!

Answer:

yes

.......................

Answer:

C + 2H2 -----> CH4

Answer:

When a magnet is moving relative to a conductor in close proximity, a current is induced within the conductor. This induced current will cause an opposing magnetic field. This opposing magnetic field can be used to levitate a magnet.

Explanation:

Answer:

30m/s

Explanation:

Given parameters:

Distance  = 12m

Time taken  = 0.4s

Unknown:

Velocity of the tennis ball = ?

Solution:

Velocity of a body is the displacement per unit of time.

  Velocity  = [tex]\frac{displacement}{time}[/tex]  

So;

      Velocity  = [tex]\frac{12}{0.4}[/tex]   = 30m/s

Answer:

Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles already in the population. Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population

Explanation:

Source: the internet

Answer:

c. Position C

Explanation:

As the magnetic force is the strongest at the end of the poles and it decreases when it comes to its centre.

Answer:

Explanation:

100 mph = 100 x 1760 x 3 / ( 60 x 60 )

= 146.67 ft / s

70 mph = 70 x 1760 x 3 / ( 60 x 60 )

= 102.67 ft/s

Let mass of the ball = m .

The ball which was moving with a velocity of 146.67 ft/s is turned back by the action of force of bat on the ball and it moved in opposite direction with velocity of - 102.67 ft/s ( - ve sign due to reversed direction )

If m be the mass of ball

change in momentum = m x 146.67 - ( - m x 102.67 )

=  m x 146.67 +  m x 102.67

= 249.34 m

Change in momentum = impulse = force x time

Putting the given values

249.34 m = force x 1 x 10⁻³ ( time = 10⁻³ s )

force = 249.34 m x 10³ poundal .

Here m is mass of the ball in lb .

Answer:

12 joules

Explanation:

I'm assuming you're looking for kinetic energy?? Kinetic energy is 1/2 mv^2. 4 squared is 16, 16 times 1.5 = 24. 24/2 = 12.

Answer:

it = 5.5e-5 cm

just tyoe in on the search bar nm to cm and a calculatro comes up

Explanation:

Explanation:

Given

Force (F) = 7 N

Displacement (d) = 8 m

work done (W) = ?

We know that

W = F * d

= 7 * 8

= 56 J

The work done in this case is 56 Joule.

The speed of sound in air is twice the temperature of the air

Answer: The speed of sound in air is twice the temperature of the air

Explanation:

Answer:

The nucleus is a highly specialized organelle that serves as the information and administrative center of the cell. ... Most of the nuclear material consists of chromatin, the unstructured form of the cell's dna that will organize to form chromosomes during mitosis or cell division.

Explanation:

Answer:

Each force acting on the blob has another one to cancel it out

Explanation:

Answer:

well we know for sure that gravity is not affecting it because it is floating in the air.

Explanation:

Answer:

te puedo ayudar pero corazón y estrella

y ando buscando novia por si quieres ser mia

Answer:

2.5 seconds

Explanation:

20:8= 2.5 seconds

have a nice day! (^o^)

Answer:

2.5 seconds

Explanation:

20 ÷ 8 = 2.5

That's it.

Answer:

Broccoli

Explanation:

Answer:

b. broccoli

Explanation:

took the quiz

hope this helps

Explanation:

We know that the overall mechanical energy of a device stabilizes in the absence of any external force. We know that that the total of potential and kinetic of the freely velocity vector remains same. ,So mechanical energy of a body, underneath gravitation, remains constant.

Answer:

a.ionic bond is kinds of bonds make up a formula unit of sodium chloride.

Answer:

A

Explanation:

Answer:

require a medium to propagate

Explanation:

this is because electromagnetic waves can travel through vacuum at the speed of 3.0 x 10^8 m/s

because they don't need particles to transfer energy

hope this helps