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3 years ago

I dont know how to do question 3，4

Physics

1 answer:

dlinn [17]3 years ago

7 0

<span>Prior to the Cambrian, organisms with hard parts (eg. shells and bones) weren't present for most the time, and it's generally such hard parts that get to fossilize. There's also been more time for Precambrian deposits to get destroyed by natural processes, </span>

<span>The supply of Precambrian fossils has actually greatly improved over the last few decades. The so called Ediacaran faunas have been found at many parts of the world, and would be worth looking into.hope it helps</span>

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The capacitors are disconnected from the potential difference without allowing them to discharge. They are then reconnected in p

Dvinal [7]

Answer:

net voltage will become half that of initial voltage now

Explanation:

Initially two capacitors are connected across a given voltage difference

So the net charge on the two capacitors is given as

$Q = C_{eq} V$

$Q = \frac{C}{2} V$

now when these are connected in parallel with no change in charge

then total charge on each plate is given

$Q = \frac{CV}{2} + \frac{CV}{2}$

$Q = CV$

also we know that

$C_{eq} = 2C$

now we will have

$V_{net} = \frac{Q_{net}}{C_{eq}}$

$V_{net} = \frac{CV}{2C} = \frac{V}{2}$

so net voltage will become half that of initial voltage now

3 0

3 years ago

List some benefits of Cardiovascular exercise:

lozanna [386]

Answer:

Aerobic exercise reduces the risk of many conditions, including obesity, heart disease, high blood pressure, type 2 diabetes, metabolic syndrome, stroke and certain types of cancer. Weight-bearing aerobic exercises, such as walking, help decrease the risk of osteoporosis.

3 0

2 years ago

Read 2 more answers

En un barrio un estudiante observa un roedor en medio de dos postes, los cuales están comunicados por un solo cable de fibra ópt

castortr0y [4]

Answer:

7 Newton

Explanation:

Dado

Longitud de la cuerda = 50 m

El cable se dobla en 0,058 m.

Masa de roedor = 350 gramos = 0,35 kg

T = m * a + m × v2 / r

Sustituyendo los valores dados obtenemos

T = 0,35 (10 + 10)

T = 0,35 * 20

T = 7 Newton

4 0

2 years ago

Which idea is associated with Copernicus? Select one: a. The orbits of the planets are circles. b. The orbits of the planets are

Schach [20]

Answer:

d. The earth rotates around the sun

Explanation:

Nicolas Copernicus is considered the first person to give the theory of heliocentric, or Sun-centered system of our planetary system.

In the heliocentric system, it is considered that the sun is stationary and the earth revolves around the sun.

He stated that the sun is at the center of the universe and the earth spins on its axis once daily and revolves around the sun in one year.

And today we know it is correct that earth rotates on its own axis and also revolves around the sun.

8 0

3 years ago

Record the lengths of the sides of ABC and ADE.

ivann1987 [24]

Can you show the rest of the problem

6 0

3 years ago