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3 years ago

Place the following list in order of occurrence from oldest to most recent:

Physics

1 answer:

Andre45 [30]3 years ago

4 0

Answer:

Explanation:

2.Big bang, 3.contraction of the solar nebula, 5.stellar ignition in our sun, 4.outgassing of earths secondary atmosphere, 1.appearance of the first ocean on earth ,7.evolution of photosynthesis, 6.build- up of oxygen in earths atmosphere.

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A circuit contains a resistor in series with a capacitor, the series combination being connected across the terminals of a batte

Natali5045456 [20]

Answer:

18.4 s

Explanation:

The time constant of an RC circuit is given by

$\tau = RC$

where

R is the resistance

C is the capacitance

For the first circuit we have

$\tau = 4.6 s$

$R=1.4\cdot 10^4 \Omega$

So we can find the capacitance

$C=\frac{\tau}{R}=\frac{4.6 s}{1.4\cdot 10^4 \Omega}=3.29\cdot 10^{-4} F$

Now in the second circuit, the new resistance is

$R=5.6\cdot 10^4 \Omega$

So the new time constant will be

$\tau = RC=(5.6\cdot 10^4 \Omega )(3.29\cdot 10^{-4} F)=18.4 s$

8 0

3 years ago

A bronze statue weighs 1200 N and has a base of 2m^2. What is the pressure the statue

notka56 [123]

Answer:

Explanation:

P = F/A

F = 1200 N

A = 2 m^2

P = 1200N/2 m^2

P = 600 N / m^2

7 0

2 years ago

Please help on this one?

vlada-n [284]

Answer:

idk

Explanation:

7 0

3 years ago

A force that results from charged particles is called?

olchik [2.2K]

A force that results from charged particles is called<u> </u><u>"electrostatic force".</u>

Hope this helps!

-Thanks!

-Charlie

7 0

3 years ago

Read 2 more answers

A 215-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope a

Misha Larkins [42]

Answer:

303.9481875 N

Explanation:

t = Time taken = 2 seconds

F = Force

r = Radius = 1.5 m

I = Moment of Inertia

$\alpha$ = Angular Acceleration

Torque

$\tau=F\times r$

$\tau=I\times \alpha$

$\\\Rightarrow F\times r=I\times \alpha\\\Rightarrow F=\frac{I\times \alpha}{r}$

Angular velocity

$\omega=rev/s\times 2\pi\\\Rightarrow \omega=0.6\times 2\pi\\\Rightarrow \omega=3.76991\ rad/s$

Angular acceleration

$\alpha=\frac{\omega}{t}\\\Rightarrow \alpha=\frac{3.76991}{2}\\\Rightarrow \alpha=1.88495\ rad/s^2$

$I=\frac{1}{2}mr^2\\\Rightarrow I=\frac{1}{2}215\times 1.5^2\\\Rightarrow I=241.875\ kgm^2$

$F=\frac{I\times \alpha}{r}\\\Rightarrow F=\frac{241.875\times 1.88495}{1.5}\\\Rightarrow F=303.9481875\ N$

The magnitude of the force to stop the merry-go-round is 303.9481875 N

3 0

3 years ago