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2 years ago

10

A mixture of sand, salt, iron and saw dust is given to you. You are asked to prove it is a mixture. Explain how you could possib

ly do this.

1 answer:

Triss [41]2 years ago

5 0

I’m not really sure if i’m being honest it doesn’t make sense to me

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Two objects are dropped from a bridge, an interval of 1.00 s apart. What is their separation 1.00 s after the second object is r

katen-ka-za [31]

Answer:

<em>171.5m</em>

Explanation:

The velocity of sound in water = 343m/s

Time taken = 1.00secs

using the formula to calculate the distance

2x = vt

x is the distance

v is the speed of sound

t is the time

x = vt/2

x = 343(1)/2

x = 171.5m

<em>hence their separation 1.00 s after the second object is released is 171.5m</em>

4 0

2 years ago

A car travels at a constant speed up a ramp making an angle of 28 degrees with the horizontal component of velocity is 40 kmh^-1

Hoochie [10]

Answer:

Vx = 35.31 [km/h]

Vy = 18.77 [km/h]

Explanation:

In order to solve this problem, we must decompose the velocity component by means of the angle of 28° using the cosine function of the angle.

$v_{x} = 40*cos(28)\\V_{x} = 35.31 [km/h]$

In order to find the vertical component, we must use the sine function of the angle.

$V_{y}=40*sin(28)\\V_{y} = 18.77 [km/h]$

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3 years ago

The Milky Way is a _____ galaxy.

Serjik [45]

It is a barred spiral galaxy.

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2 years ago

Read 2 more answers

Aliun [14]

Answer:

the correct answer is c, they will accelerate away from each other at different speeds. the 80kg will go faster due to less mass

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3 years ago

When a wave passes from one medium to another, its _________ remains constant.

Mashcka [7]

The frequency will not change

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3 years ago