(Look at the minerals in the linked picture)Both diamond and coal are formed by changes in pressure and temperature below the Earth's surface. Which of these is a step in the formation of the minerals?

A) atoms break up in extreme heat
B) atoms are rearranged in materials
C) atoms combine in water to form solids
D) atoms of magma cool after a volcanic eruption

Answers

Answer 1

Answer: Both diamond and coal are formed by changes in pressure and temperature below the Earth's surface. The step in the formation of the minerals is atoms break up in extreme heat. The answer is letter A.

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Two technicians are discussing hydraulics. Technician A says that if pistons of the same size are used, motion and force can be increased or decreased. Technician B says that if a small piston acts upon a larger piston, the force of the larger piston will increase, but the distance it travels will decrease. Who is correct? A. Technician B only B. Technician A only C. Both Technician A and B D. Neither Technician A nor B

Answers

the correct option is A. Only technician B is correct.

Hydraulics works on the pascal law, which states that in a direction the hydro static fluid pressure remains constant.

Px=Py=Pz

Since small piston has small area compare to the large piston

Pbig=Psmall

Fbig/Abig=Fsm/Asm

Fbig= $(Abig)/(Asmall)*Fsmall$

thus the force on the large piston will increase, but it travel small distance.

What simple science equation explains the relationship between mass, weight and gravity.

Answers

The force of gravity is the force with which massively large objects such as the earth attracts another object towards itself. All objects of the earth exert a gravity that is directed towards the center of the earth. Therefore, the force of gravity of the earth is equal to the mass of the object times acceleration due to gravity and also equal to the weight of the object.

F = ma

since F = W

W = ma

Answer:

Force = Mass x Acceleration

Explanation:

Force - The units of force = Newtons( N)

Mass - The units of mass = Kilograms (Kg)

Acceleration - Units of acceleration = (m/s2)

What is the difference between transverse waves and longitudinal waves

Answers

Answer:

In a transverse wave, the vibration of the particles (or the direction of the oscillation in the case of electromagnetic waves) is perpendicular to the direction of propagation. This means, if the wave moves in the x-direction, the oscillations may be in the y-direction, for example, the plane waves are transverse waves.

Longitudinal waves, as the name says, are the waves where the oscillation is parallel to the direction of movement. In the case of mechanical waves, this type is called "compressional waves", an example of this can be the pressure waves or the sound waves. For the electromagnetic waves this case is not really common, but Maxwell's equations do lead to the appearance of longitudinal waves under some circumstances, for example, in plasma waves or guided waves.

a longitudinal wave is the vibrations of a particle of the medium conveying a wave are to and from the parallel to the direction of propagation of the wave. a transverse wave is a vibration of a particle wave of the medium wave conveying a wave are perpendicular to the direction of propagation of the wave

This time, William Tell is shooting at an apple that hangs on a tree (Fig. 3.32). The apple is a horizontal distance of 20.0 m away and at a height of 4.00 m above the ground. If the arrow is released from a height of 1.00 m above the ground and hits the apple 0.500 s later, what is the arrow’s initial velocity?

Answers

Answer:

The initial arrow's velocity is 40,9 m/s at 11.9° from the horizontal

Explanation:

In order to find the inital velocity we need to determine its components and the angle that the arrow is launched at.

For horizontal component, we will have:

ν cos(θ)t = x ⇒ cos(θ) = x/νt

For vertical component we will have:

h= v sin(θ)t ₋ gt²÷ 2 ⇒ sin (θ) = h + gt²÷2/νt

From the two equations we got, after noting that the vertical displacement is 3m, we can calculate

tan(θ) = h +gt²÷2/νt/ x÷νt = h+ gt²÷2/x = 3+ 9.8.0.5²÷2/20 = 0.21125

Now we can calculate θ = tan⁻¹(0.21125) ≈ 11.9°

Now that we know the angle we can subtitute at any of the expressions for the two components of the velocity . Let's do this subsitution at the horizontal component:

ν cos(θ)t= x =ν = x/tcos(θ)= 20/ 0.5cos(11.9) ≈ 40.9 m/s.

how do you describe and determine the direction of the magnetic field produced by an electric current?

Answers

Answer:

the magnet or electric current produces a magnetic field

Explanation:

this magnetic field can be visualized as a pattern of a circular field lines surrounding a wire. hall probes can determine the magnitude of the field

hope it helps you

What is the difference in the charges on a ballon rubbed in your hair and a glass rod rubbed

Answers

The balloon steals electrons from your hair, leaving the hair positively charged, and the balloon negatively charged. It causes hair to be apart from each other, because it has the same charge. Glass has a weaker hold on electrons, and silk absorbs the lost electrons.

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