2 years ago

State, with a reason, whether hotdog relish a homogeneous mixture or a heterogeneous mixture.

2 answers:

7 0

It’s a heterogeneous mixture because it’s not a uniform mixture throughout, there are big chunks of stuff that can’t be mixed together.

vesna_86 [32]2 years ago

6 0

Answer:

MHMMMM TRY DOING A SAND WHICH I DID THIS A MOONTH AGO AND I MADE A 105 THINK ABOUT IT

Explanation:

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Turn friction on, and get the object accelerating with an applied force. Then, take the applied force away. Is there any acceler

patriot [66]

Answer:

there can be acceleration

Explanation:

because of the friction. If the friction and applied force is nowhere then it will not move, but if it has a friction it will move but not in the same direction it can only move slightly or really move. based on me only

7 0

3 years ago

The half-life of a certain radioactive substance is 12 hours. There are 19 grams present initially. a. Express the amount of su

neonofarm [45]

Answer:

(a) $N=19\times e^{-\lambda t}$

(b) 15 hours

Explanation:

half life, T = 12 hours

No = 19 g

(a) Let N be the amount remaining after time t.

Let λ be the decay constant.

$\lambda =\frac {0.6931}{T}$

The equation of radioactivity used here is given by

$N=N_{o}e^{-\lambda t}$

$N=19\times e^{-\lambda t}$

(b) N = 8 gram

Substitute the values in above equation

$\lambda =\frac {0.6931}{12}$

λ = 0.0577 per hour

So, $8=19\times e^{-0.577t}$

$e^{-0.0577t}=0.421$

Take natural log on both the sides

- 0.0577 t = - 0.865

t = 15 hours

4 0

3 years ago

3 What is the displacement of a satellite when it makes a complete round along its circular path?

kirill [66]

Answer:

Explanation:

The displacement is zero since it goes in a full circle and ends up where it started.

4 0

2 years ago

In 10s a car accelerates 4m/s^2 to 60m/s. How fast was the car going before it accelerated?

slega [8]

v2 = v1 + at 60 = v1 + 4*10 v1 = 20 m/s

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3 years ago

Simplify completely: -3(4-9)+6-2(-8+5)

Elis [28]

Answer:

Explanation:

-3(4-9)+6-2(-8+5)

-12+27+6+18-10

5 0

3 years ago

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