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3 years ago

How are elements, compounds, and molecules all related to one another?

Physics

2 answers:

vovikov84 [41]3 years ago

5 0

Answer: an element is a substance that is made up of only one kind of atom.

Molecule: they are formed ehrn teo or more atoms join together.

Compound: a compound is a substance that is formed when two or more elements combine chemically.

They are related to each other by they all formed when some rhing joins to them molecules are formed of atoms and elements are also formed of atom and compound is formed of elements

kkurt [141]3 years ago

4 0

Answer:

When elements combine, they form molecules. Simply put, a molecule is a group of two or more atoms chemically bonded together. ... Certain molecules are also compounds. A compound is a group of two or more different atoms chemically bonded together.

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What is the de broglie wavelength of an object with a mass of 3.80 kg moving at a speed of 1.90 m/s? (useful constant: h = 6.63×

stepladder [879]

This is the formula you need to use

5 0

3 years ago

A circular loop of flexible iron wire has an initial circumference of 167 cm, but its circumference is decreasing at a constant

Kisachek [45]

Answer:

Part a)

$EMF = 5.6 \times 10^{-3} V$

Part b)

Since the radius is decreasing so induced current will increase the flux through the coil

So it would be clockwise in direction

Explanation:

As we know that magnetic flux linked with the coil is given as

$\phi = \pi r^2 B$

now the rate of change in flux is given as

$\frac{d\phi}{dt} = 2\pi r \frac{dr}{dt} B$

now we know that circumference is decreasing at rate of 15 cm/s

so here we know the length of circumference as

$C = 2\pi r$

So rate of change in circumference is

$\frac{dC}{dt} = 2\pi \frac{dr}{dt}$

$\frac{1}{2\pi}(15 cm) = \frac{dr}{dt}$

final length of circumference at t = 8 s

$C = 167 - (15)(8) = 47$

Part a)

Now the induced EMF is given as

$EMF = (2\pi r)(\frac{1}{2\pi})(0.15)(0.5)$

$EMF = (0.47)(\frac{1}{2\pi})(0.15)(0.5)$

$EMF = 5.6 \times 10^{-3} V$

Part b)

Since the radius is decreasing so induced current will increase the flux through the coil

So it would be clockwise in direction

5 0

3 years ago

two projectiles are fired at equal speeds but differentangles. one is fired at an angle of 30 degrees and the other at 60degrees

zheka24 [161]

Answer:

a) 30 degree

Explanation:

As we know that time of flight of the projectile depends on the the vertical component of the velocity always

It is given as

$T = \frac{2v_y}{g}$

now we know that

$v_y = vsin\theta$

so we will have

$T = \frac{2vsin\theta}{g}$

since we know that two projectiles are projected at same speed but different angles

so smaller the angle will take smaller time

so it would be 30 degree projectile which will take smaller time

8 0

3 years ago

In a position time graph, a curved line represents: acceleration no movement constant velocity

xz_007 [3.2K]

A curved line on a position/time graph shows that the speed is changing.

So right there, we know there is acceleration.

8 0

3 years ago

If each wire carries a current of 67 a in the same direction, what is the magnitude of the magnetic force per meter (in nm) exer

ArbitrLikvidat [17]

The magnitude of the magnetic force per meter (in nm) exerted on each wire is 3.74 * 10^-3 N/m or 3.74v 8 10 ^6 N/nm.

Magnetic force, enchantment or repulsion that arises between electrically charged debris due to their movement. it's miles the basic pressure accountable for such outcomes as the movement of electric cars and the appeal of magnets for iron.

Magnetic pressure is a compass, a motor, the magnets that keep stuff at the fridge, educate tracks, and new curler coasters. All transferring prices supply upward push to a magnetic subject and the costs that flow thru its regions, revel in a force.

Two items containing charge with the equal path of motion have a magnetic enchantment pressure between them. in addition, gadgets with price transferring in contrary instructions have a repulsive force between them. In our article on magnetic fields we found out how transferring rate surrounds itself with a magnetic field.

explanation is given in the image below.

Force per unit length between two wires ,

F/l = μοI₁I₂/2πd

= 4π * 10^-7 *67 *67 / 2π (24 * 10^-2)

= 2 * 10 ^-7 * 67 *67/24 *10 ^ -2

= 4489/12 * 10^-5

= 3.74 * 10 ^-3 N/m

Learn more about magnetic force here:-brainly.com/question/2279150

#SPJ4

8 0

1 year ago