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3 years ago

AB+C --> AC+B is the general equation for which one of the following types of chemical reactions?

Physics

1 answer:

Nana76 [90]3 years ago

3 0

Answer:

Explanation:

This is an example of single replacement (or single displacement). One element (in this case, C) replaces a similar element in a compound (in this case, the B in AB).

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If I had a six pulley system and a resistance of 24,000 N, how much effort would I need to lift it?

lapo4ka [179]

Suppose you could rig up a pair of pulley systems and get a friend, who is as strong as you, to pull one of them. You'd still have trouble, but you might be able to do it because each pulley would lift half the weight, or 1,000 pounds, and a quarter of that weight is 250 pounds

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3 years ago

Water, in a 100-mm-diameter jet with speed of 30 m/s to the right, is deflected by a cone that moves to the left at 14 m/s. Dete

podryga [215]

Answer:

Explanation:

The velocity at the inlet and exit of the control volume are same $V_i=V_e=V$

Calculate the inlet and exit velocity of water jet

$V=V_j+V_e\\\\V=30+14\\\\V=44m/s$

The conservation of mass equation of steady flow

$\sum ^e_i\bar V. \bar A=0\\\\(-V_iA_i+V_eA_e)=0$

$A_i\ \texttt {is the inlet area of the jet}$

$A_e\ \texttt {is the exit area of the jet}$

since inlet and exit velocity of water jet are equal so the inlet and exit cross section area of the jet is equal

The expression for thickness of the jet

$A_i=A_e\\\\\frac{\pi}{4} D_j^2=2\pi Rt\\\\t=\frac{D^2_j}{8R}$

R is the radius

t is the thickness of the jet

D_j is the diameter of the inlet jet

$t=\frac{(100\times10^{-3})^2}{8(230\times10^{-3}} \\\\=5.434mm$

(b)

$R-x=\rho(AV_r)[-(V_i)+(V_c)\cos 60^o]\\\\=\rho(V_j+V_c)A[-(V_i+V_c)+(V_i+V_c)\cos 60^o]\\\\=\rho(V_j+V_c)(\frac{\pi}{4}D_j^2 )[V_i+V_c](\cos60^o-1)]$

$1000kg/m^3=\rho\\\\44m/s=(V_j+V+c)\\\\100\times10^{-3}m=D_j$

$R_x=[1000\times(44)\frac{\pi}{4} (10\times10^{-3})^2[(44)(\cos60^o-1)]]\\\\=-7603N$

The negative sign indicate that the direction of the force will be in opposite direction of our assumption

Therefore, the horizontal force is -7603N

7 0

3 years ago

Which purpose does a light bulb serve in a circuit?

aliina [53]

Answer:

A light bulb is that component of circuit that lights up when electricity flows through it and vice versa. Its main function is to tell whether electricity is being supplied or not. Its function is also to light up dark places.

Explanation:

7 0

2 years ago

Read 2 more answers

1. A pumpkin with a mass of 2 kg accelerates 2 m/s/s when an unknown force is applied to it. What is the amount of the force?

Andreyy89

Answer:

<h3>The answer is 4 N</h3>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 2 × 2

We have the final answer as

Hope this helps you

8 0

3 years ago

A bungee cord with a spring constant of 800 StartFraction N over m EndFraction stretches 6 meters at its greatest displacement.

zalisa [80]

Explanation:

EE = ½ kx²

EE = ½ (800 N/m) (6 m)²

EE = 14,400 J

8 0

3 years ago