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2 years ago

Vhich type of reaction is modeled by this chemical equation? PLi + CaCl2 - 2LICI + Ca

Physics

1 answer:

san4es73 [151]2 years ago

7 0

Answer:

Double-replacement

Explanation:

2Li + CaCl2 → 2LiCl + Ca O

D. Double-replacement

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An insect meanders across a sidewalk. The insect moves 15cm to the right, 10cm up the sidewalk and 8cm to the left. What is the

IRISSAK [1]

Answer:12.206 cm, $\theta =54.99^{\circ}$

Explanation:

Given

Insect walks 15 cm to the right

so its position vector is $r_1=15i$

Now it moves 10 cm up so its new position vector

$r_2=15i+10j$

Now it moves 8 cm left so its final position vector is

$r_3=15\hat{i}+10\hat{j}-8\hat{i}=7\hat{i}+10\hat{j}$

so its displacement is given by

$|r_3|=\sqrt{7^2+10^2}=\sqrt{149}=12.206 cm$

For direction, let \theta is the angle made by its position vector with x axis

$tan\theta =\frac{10}{7}=1.428$

$\theta =54.99^{\circ}$

8 0

3 years ago

21) The distance between crest and the adjacent trough of water wave is 3m They pass a given point

eimsori [14]

Answer:

1.67m

5m/s

Explanation:

Given parameters:

Wavelength of the wave = 3m

Speed of the wave = 5m/s

Unknown:

Frequency of the wave = ?

Speed of the water waves = ?

Solution:

The distance between crest and the adjacent trough of water waves is known as the wavelength of a wave.

To find the frequency ;

V = f∧

V is the speed of the wave

f is the frequency

∧ is the wavelength

Insert the parameters and find the frequency;

f = V/ ∧ = 5 / 3 = 1.67Hz

The rate at which the wave passed a given point is the speed of the wave and it is 5m/s

6 0

3 years ago

Part CPart complete Determine the maximum force P that can be applied without causing the two 43-kg crates to move. The coeffici

Wewaii [24]

Answer:

the maximum force will be equal to 134.84 N

Explanation:

We have given mass m = 43 kg

Coefficient of static friction $\mu _s=0.32$

Acceleration due to gravity $g=9.8m.sec^2$

We have to find the maximum force which , when applied there is no movement of crates

This maximum force will be equal to frictional force

Frictional force is given by $f=\mu mg=0.32\times 43\times 9.8=134.84N$

So the maximum force will be equal to 134.84 N

3 0

3 years ago

Two force of 126N and 215N act on an object,calculate the magnitude and direction

yan [13]

The magnitude of the net force could be anything from 89N to 341N , and it could be acting in ANY direction.

To solve both mysteries we need to know the directions of the original two forces.

7 0

3 years ago

What caused the light to shine on the paper above the mirror?

Shalnov [3]

Answer:

The Light was reflected, b.

Explanation:

If the flashlight was pointed at the mirror, it was reflected because it did not stop on the mirror or go through the mirror or reflect in different ways.

4 0

3 years ago