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3 years ago

Metamorphic rocks may generally be distinguished from igneous rocks because

Physics

1 answer:

nlexa [21]3 years ago

6 0

The grains in igneous rocks are interlocking but the Metamorphic rocks are not.

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A metal cylinder measures 3.0 cm in diameter, is 12.0 cm high, and has a mass of 750 g. The cylinder hangs from a string attache

kvasek [131]

Answer with Explanation:

We are given that

Diameter of cylinder, $d_1=$ 3 cm

Radius, $r_1=\frac{d_1}{2}=\frac{3}{2}=1.5cm=1.5\times 10^{-2} m$

1m=100 cm

Height,h=12 cm= $\frac{12}{100}=0.12 m$

Mass,m=750 g= $\frac{750}{1000}=0.75kg$

1kg=1000 g

Diameter of beaker, $d_2=10 cm$

Radius of beaker, $r_2=\frac{d_2}{2}=\frac{10}{2}=5cm$

A. $\pi r^2_2h_2=\pi r^2_1 h_1$

$h_2=\frac{r^2_1}{r^2_2}h$

$h_2=\frac{(1.5)^2}{(5)^2}\times 12=1.08 cm$

Hence, the height of the water in the beaker rises when the cylinder is submerged=1.08 cm

B.Weight read on the scale after the cylinder is submerged

$w=mg-\rho A_1h_1g$

Where $g=9.8 m/s^2$

$A_1=\pi r^2_1$

Density of water= $\rho=1000kg/m^3$

$w=0.75\times 9.8-1000\times \pi(1.5\times 10^{-2})^2\times 0.12\times 9.8$

$w=6.52 N$

3 0

3 years ago

Two sinusoidal waves with identical wavelengths and amplitudes travel in opposite directions along a string with a speed of 10 c

andrey2020 [161]

Answer:

The wave length of the string = 10 cm or 0.1 m

Explanation:

Wave: A wave can be defined as a disturbance, which travels through a medium and transfer energy from one point to another, without causing any permanent displacement of the medium itself.

The velocity, frequency and wavelength of a wave is related as shown,

v = λf ........................ Equation 1

Where v = velocity of the wave, λ = wave length, f = frequency.

λ = v/f ..................... Equation 2.

Given: v = 10 cm/s,

T = 2t, where t = 0.5 s, (This is half of one cycle)

T = 2×0.5 = 1 s,

But T = 1/f = 1/1 = 1 Hz.

Substituting these values into equation 2

λ = 10(1)

λ = 10 cm. or 0.1 m

Thus the wave length of the waves = 10 cm or 0.1 m

5 0

3 years ago

If the force used to push a shopping cart increases, the cart's acceleration will

rewona [7]

Answer:

b) increase

Explanation:

4 0

3 years ago

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Wind blows from what pressure to what pressure

viva [34]

This is called the coriolis effect. So in the northern hemisphere, winds blow clockwise around an area of high pressure and counter-clockwise around low pressure. Not only do differences in air pressure help determine wind speed and direction, they help forecast precipitation and clear weather.

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3 years ago

In three to five sentences, identify the acid, base, conjugate acid, and conjugate base. Use patterns in the periodic table to e

Oliga [24]

A conjugate acid is formed from the base by accepting a proton from the acid .

A conjugate base is obtained from the Brownstead - Lowry acid when it looses a proton while the conjugate acid is obtained from the Brownstead - Lowry base when it accepts a proton. In the Brownstead - Lowry sense, acid base reaction involves the loss or gain of a proton.

Consider the hypothetical reaction; AH + :B ⇄ BH + :A. The specie BH is the conjugate acid while the specie :B is the Brownstead - Lowry base . The specie :A is the conjugate base while the specie AH is the Brownstead - Lowry acid.

Learn more about conjugate acid: brainly.com/question/10468518

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3 years ago