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3 years ago

Trace fossils would include all of the following EXCEPT

Physics

1 answer:

Vadim26 [7]3 years ago

6 0

Answer:

Im pretty sure its fossilized nests because nests arent tracings. hope this helps

Explanation:

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The force of earth’s gravity is 10N downward. What us the acceleration of a 15kg backpack if lifted with a a 15N force?

Anuta_ua [19.1K]

Answer:

F-F(gr) = ma

a= {F-F(gr)}/m =

=(15-10)/15=0.33 m/s² (upward)

5 0

2 years ago

Three resistors of 15.0 ohms, 30.0 ohms, and 60.0 ohms respectively are connected in parallel to an applied potential difference

AVprozaik [17]

A). The drawing looks like a ladder with 4 rungs.
One rung is a 90-volt battery.
The other 3 rungs are the 3 resistors.

b). The equivalent resistance is the reciprocal of (1/15 + 1/30 + 1/60).
That's the reciprocal of 7/60, or about 8.571... ohms.

c). I = V/R = 90 / 8.571... = 10.5 Amperes.

d). The 60-ohm resistor is connected directly across the battery.

Power = V²/R = (90²) / 60 = 135 watts. Better COOL that baby !

4 0

3 years ago

What is a hypocenter?

erastovalidia [21]

Answer:

A hypocenter is just like an epicenter, the central origin point of an earthquake.

Explanation:

7 0

3 years ago

6. What is the speed (v) of an object with 13 kg of mass and a momentum of 3 kg-<br> m/s?

I am Lyosha [343]

Answer:

0.23m/s

Explanation:

momentum(p) = mv

v= p/m

7 0

3 years ago

How is the size of the mri signal related to the applied b0 field?

lianna [129]

Answer:

Intensity Of MRI signal is related as square of $B_{0}$

Intensity is related as $B_{0}^{2}$ .

Explanation:

MRI simply means Magnetic Resonance Imaging. In this process by the resonance of magnetic field the frequency is produced which is used to image the body parts (Mainly the brain).

The signal Strength is the rate of change of Magnetization (M) with respect to the time. For the calculation of Intensity we use Bloch equation which is given by

$\frac{dH}{dt} = M \times \gamma B$

On further solving

$\frac{dH}{dt} =\mu B \times \gamma B \\\frac{dH}{dt} = \mu \times \gamma B^{2}$

So, Intensity is related as $B_{0}^{2}$ .

8 0

3 years ago