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vaieri [72.5K]
3 years ago
8

What is the formula for silver nitrate

Physics
1 answer:
serious [3.7K]3 years ago
8 0

Answer:

Explanation:

Agno3

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A 1300-N crate rests on the floor. How much work is required to move it at constant speed (a)
kherson [118]

a) The work done is 920 J

b) The work done is 5200 J

Explanation:

a)

In this first part of the problem, the crate is moved horizontally at constant speed.

The work required in this case is given by

W=Fd cos \theta

where

F is the magnitude of the force applied

d is the displacement of the crate

\theta is the angle between the direction of the force and of the displacement

Here the crate is moved at constant speed: this means that the acceleration of the crate is zero, and so according to Newton's second law, the net force on the crate is zero: this means that the force applied, F, must be equal to the force of friction (but in opposite direction), so

F = 230 N

The displacement is

d = 4.0 m

And the angle is \theta=0^{\circ}, since the force is applied horizontally. Therefore, the work done is

W=(230)(4.0)(cos 0^{\circ})=920 J

b)

In this case, the crate is moved vertically. The force that must be applied to lift the crate must be equal to the weight of the crate (in order to move it a constant speed), therefore

F = W = 1300 N

The displacement this time is again

d = 4.0 m

And the angle is \theta=0^{\circ}, since the force is applied vertically, and the crate is moved also vertically. Therefore, the work done on the crate this time is

W=(1300)(4.0)(cos 0^{\circ})=5200 J

Learn more about work:

brainly.com/question/6763771

brainly.com/question/6443626

#LearnwithBrainly

4 0
3 years ago
PLSSSS help meeeeee lol
Elis [28]

Answer:

B. As the temperature increases, the kinetic energy of the molecules increases.

Explanation:

When the temperature of an object increases, the kinetic energy of its particles increases, so the thermal energy of an object increases as its temperature increases.

3 0
3 years ago
Describe the atomic structure of hydrogen atom.
-Dominant- [34]

Answer and Explanation:

The hydrogen atom is an atom of hydrogen element.Hydrogen atoms contain one proton which has positive charge and one electron which has negative charge , so due to positive and negative charge present in the hydrogen atom its becomes neutral atom.In whole universe the hydrogen atom is found in most abundant. Electron and nucleus of the hydrogen atom is bound together with the help of coulomb force.  

3 0
3 years ago
You plan to throw stones by using a sling that you whirl over your head. You will whirl the stone in a horizontal circle with a
MariettaO [177]

Answer:

330.635 meter per second square

Explanation:

Given

Height ,h = 2.50 m

Radius, r = 1.50 m

Distance travelled,  d = 15.9 m

Since, the stone is released and it falls towards the sky, its initial velocity is zero

As per equation

h = ut + \frac{1}{2} gt^2\\, we will evaluate "t"

Substituting the given values in above equation, we get

2.5 = 0 *t + 0.5 * 9.81 * t^2\\t^2 = \frac{2.5}{0.5*9.81}\\ t = \sqrt{0.5096} \\t = 0.714

Velocity

= \frac{d}{t} \\= \frac{15.9}{0.714}\\= 22.27

centripetal acceleration

= \frac{v^2}{r} \\= \frac{22.27^2}{1.5}\\ = 330.635\\

6 0
3 years ago
A car with a constant velocity of 22 m/s is driven for 6.8 s. How far did it travel? A. 29 m B. 154 m C. 150 m D. 3 m
masha68 [24]

Answer:

150 m

Explanation:

velocity = 22m/s

time = 6.8 s

distance = velocity × time

= 22 × 6.8

= 149.6

≈ 150 m

5 0
3 years ago
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