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4 years ago

6

Starting from its nest, an eagle flies at constant speed for 2.8 min due east, then 4.0 min due north. From there the eagle flie

s directly to its nest at the same speed. how long is the eagle in the air

1 answer:

mrs_skeptik [129]4 years ago

3 0

11.96 minutes. Use Pythagoras Theorem

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What is the formula of effort

lubasha [3.4K]

Answer:

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Explanation:

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<em>The formula to calculate force is: force = mass x acceleration, or F = m x a, where force and acceleration have both magnitude and direction.</em>

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3 years ago

Two light bulbs are installed in two sockets, the sockets are connected in series, and power is then applied to the combination

Arisa [49]

Answer:

False

Explanation:

<em>If one of the bulbs is removed from the series, the other bulb will not come on at all.</em>

This is because the removal of one of the bulbs would interrupt the flow of current though the entire circuit.

Hence, that the other one will get brighter if one of two bulbs in a circuit is removed from its socket is not true.

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3 years ago

Help please :)<br><br> Gamma waves are transmitted by ....... ?

Afina-wow [57]

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Gamma waves are transmitted by ...... body tissues with very little absorption

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3 years ago

Read 2 more answers

The angular momentum of a flywheel having a rotational inertia of 0.200 kg · m2 about its central axis decreases from 3.80 to 0.

Bingel [31]

Answer:

14.3065 rad

-36.777 J

-28.29 W

Explanation:

$L_f$ = Final angular momentum = 0.6 kgm²/s

$L_i$ = Initial angular momentum = 3 kgm²/s

I = Moment of inertia = 0.2 kgm²

Torque is given by

$\tau=\dfrac{L_f-L_i}{t}\\\Rightarrow \tau=\frac{0.6-3.8}{1.3}\\\Rightarrow \tau=-2.46\ Nm$

$\theta=\omega_it+\dfrac{1}{2}\alpha t^2$

Initial angular speed is given by

$\omega_i=\dfrac{L_i}{I}$

Angular acceleration is given by

$\alpha=\dfrac{\tau}{I}$

$\theta=\omega_it+\dfrac{1}{2}\alpha t^2\\\Rightarrow \theta=\dfrac{L_it+\dfrac{1}{2}\tau t^2}{I}\\\Rightarrow \theta=\dfrac{3.8\times 1.3+\dfrac{1}{2}\times -2.46\times 1.3^2}{0.2}\\\Rightarrow \theta=14.3065\ rad$

The angle is 14.3065 rad

Work done is given by

$W=\tau \theta\\\Rightarrow W=-2.46\times 14.95\\\Rightarrow W=-36.777\ J$

The work done on the wheel is -36.777 J

Power is given by

$P=\dfrac{W}{t}\\\Rightarrow P=\dfrac{-36.777}{1.3}\\\Rightarrow P=-28.29\ W$

The power is -28.29 W

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3 years ago

How can the effect of chromatic aberration be reduced?

kramer

The answer to the question:
<span>How can the effect of chromatic aberration be reduced?
A) by using multiple lenses
B) by reducing the focal length
C) by using a larger objective lens
D) by making the telescope larger

is:
</span>B) by reducing the focal length

6 0

3 years ago

Read 2 more answers