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2 years ago

Why can't fossils form in igneous rocks Magma flows too quickly for it to settle in The extreme heat destroys all of the remains

Physics

2 answers:

vaieri [72.5K]2 years ago

8 0

Answer:true

Explanation:

Igneous rocks form from molten rock, and rarely have fossils in them. Metamorphic rocks have been put under great pressure, heated, squashed or stretched, and fossils do not usually survive these extreme conditions.

AleksandrR [38]2 years ago

7 0

Answer:

you are right

Explanation:

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If an object is pushed to the right by a force of 7N and pushed to the left by a force of 7N ,what is the resultant force on the

Lunna [17]

7-7 = 0 N
The resultant (or net) force is 0 N

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2 years ago

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An 30-turn coil has square loops measuring 0.341 m along a side and a resistance of 3.61 Ω. It is placed in a magnetic field tha

Verdich [7]

Answer:

Thus, the induced current in the coil at $t =1.73s$ is 9.98 A.

Explanation:

Faraday's law says

$\varepsilon = N \frac{d \Phi_B}{dt}$

where $N$ is the number of turns and $\Phi_B$ is the magnetic flux through the square coil:

Now,

$N = 30$

$\theta = 37.5^o$

$A = (0.341m)^2= 0.11623m^2$

$B = 1.45t^3$ ;

therefore,

$\varepsilon = N \frac{d \Phi_B}{dt} = N\frac{d ( BA\:cos(\theta))}{dt} = 30*\frac{d ( (1.45t^2)(0.1163)\:cos(37.5^o))}{dt}$

$=30*(0.1163)\:cos(37.5^o)*1.45*\dfrac{d ( t^3)}{dt} = 12.04t^2$

$\boxed{\varepsilon = 12.04t^2}$

is the emf induced in the coil.

Now, the loop is connected to $R = 3.61\Omega$ resistance; therefore, at $t = 1.73s$

$\varepsilon = RI = 12.04t^2$

$RI = 12.04(1.73)^2$

$RI = 36.03$

$I = \dfrac{36.03}{3.61\Omega }$

$\boxed{I = 9.98A }$

Thus, the current in the coil at $t =1.73s$ is 9.98 A.

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3 years ago

An environmental scientist performs research to discover what is in the solid

xxMikexx [17]

Answer:

D i took the test

Explanation:

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2 years ago

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I have no clue what to do to find the problem.

oksano4ka [1.4K]

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3 years ago

When a car drives over a speed bump and oscillates up and down in simple harmonic motion, at which position during the motion is

Oksana_A [137]

Using the second Law of Newton, F = m * a, you know that acceleration is maximum when the force is maximum.

Using Hooke's Law, F = K Δx, you know that the force is maximum when the displacement from the equilibrium (Δx) is maximum.

So the answer is that the acceleration is maximum at the maximum amplitude x = a.

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2 years ago