All categories

4 years ago

What is the density of a 14g irregular solid that displaces 7ml of water

1 answer:

7 0

The density is given by the formula $d=\frac{m}{V}$ , where d is density, m is the mass and v the volume. The 7ml of water displaced is the volume of the solid so

$d=\frac{m}{V} =\frac{14}{7} = 2g/ml$

You might be interested in

The picture below shows an open field with wildflowers.

FromTheMoon [43]

Answer:

I think it's B

Explanation:

B is talking about the bees helping the flowers, so that isn't helping the bees but the flowers instead

8 0

3 years ago

What is the minimum (non-zero) thickness of a benzene (n = 1.501) thin film that will result in constructive interference when v

ad-work [718]

Explanation:

At each reflecting surface (benzene and glass) there will be 180 degree phase change.

Now, for constructive interference the optical path in benzene is $\lambda$ .

Formula to calculate thickness of a benzene thin film is as follows.

Optical path length through benzene ( $\lambda$ ) = $2 \times n \times d$

Hence, substituting the given values into the above formula as follows.

Optical path length through benzene = $2 \times n \times d$

d = $\frac{\text{Optical path length through benzene}}{2 \times n}$

= $\frac{\lambda}{2 \times n}$

= $\frac{615 \times 10^{-9}}{2 \times 1.501}$ (as 1 nm = $10^{-9}m$

= 204.9 m

Thus, we can conclude that minimum thickness of benzene is 204.9 m.

4 0

3 years ago

If the distance between two objects is increased, the gravitational force will _____.

Mila [183]

Answer:

Decrease by the distance squared

Explanation:

<u><em>Gravitation formula:</em></u>

$F=\frac{GMm}{r^{2}}$

where

'F' is the force of attraction between the two bodies (Gravitational force),

'G' is the universal gravitational constant,

'M' is the mass of the first object,

'm' is the mass of the second object and

'r' is the distance between the centers of each object.

Hence, with the increase by distance between two objects , the gravitation decreases by the distance squared

7 0

3 years ago

Read 2 more answers

Balance the Following Equations: SiCl4 + H2O = SiO2 + HCl

Dmitry [639]

Answer:

SiCl4 + H2O = SiO2 + HCl

Reactant. product

Si = 1 atom Si = 1 atom

Cl = 4 atom Cl = 1 atom

H = 2 atom H = 1 atom

O = 1 atom O = 2 atom

SiCl4. + 2H2o = SiO2 + 4hcl

Reactant. product

Si = 1 atom Si = 1 atom

Cl = 4 atom Cl = 4 atom

H = 4 atom H = 4 atom

O = 2 atom O = 2 atom

Balanced chemical equation.

4 0

3 years ago

Which of the following statements correctly explains the motion of atoms and molecules within the different states of matter? *

sineoko [7]

Answer:

The correct answer is : The particles within all three states of matter are constantly moving.

Explanation:

The particles in the solid, liquid and gaseous states are in motion. In the latter is where they present greater movement and high kinetic energy, then follow the liquid state and finally the solid where the movement is more restricted (in this case, the particles vibrate).

5 0

3 years ago

Read 2 more answers