2 years ago

Earth's core is composed primarily of _____. -iron oxides and magnesium -silicon and iron -iron and nickel -magnesium and nickel

Physics

1 answer:

Shalnov [3]2 years ago

3 0

Iron & Nickel. There are also small doses of other unimportant garbage.

C is your answer. (Iron & Nickel)

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When would the displacement technique of measuring need to be employed?

Tanzania [10]

Answer:

a is the answer is yes I....

Explanation:

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2 years ago

You are studying a population of flowering plants for several years. When you present your research findings you make the statem

Anit [1.1K]

Answer:

Option A

Explanation:

The graph for this problem must depict the following ""Increased allocation of resources to reproduction relative to growth diminished future fecundity."

Hence, the survivor ship must be on the Y axis and the resources on the X axis.

Here the resources include the number of seeds produced.

hence, the higher is the number of seeds (resource), the lower is the survivorship (future fecundity)

Hence, option A is correct

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2 years ago

Cell phones do not work everywhere. There are places where your cell phone cannot get a signal

shusha [124]

There are probably no strong signals

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3 years ago

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An ice cube is placed on a hot stove. Which of these statements best describes how heat moves between the ice cube and the stove

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B! Conduction is touch, so the heat traveled through touch from th stove to the ice cube, therefore melting it

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3 years ago

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Block A weighs 14 lb and block B weighs 5 lb If B is moving downward with a velocity (vB)1 = 3 ft/s at t = 0, determine the velo

kolezko [41]

Velocity, va2 = 10.5 ft/s

<u>Explanation:</u>

From the figure:

Length of the cable = Sa + 2Sb = l

∴ vₐ = -2vb

Applying the principle of Impulse and momentum in x-direction

$mv_x_1 + \int\limits^t_t {F_x} \, dt = mv_x_2$

Limit is t1 to t2

$-(\frac{14}{32.2}) (2) (3) - T = \frac{14}{32.2} v_y_2$ -(1)

Applying the principle of Impulse and momentum in y-direction

$mv_y_1 + \int\limits^t_t {F_y} \, dt = mv_y_2$

Limit is t1 to t2

$(\frac{5}{32.2}) (3) - 2T + 3 = -\frac{5}{32.2} \frac{v_y_2}{2}$ -(2)

Solving equation (1) and (2), we obtain

T = 1.6lb

va2 = 10.5 ft/s

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2 years ago