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3 years ago

7

PLEASE HELP While the Earth is revolving around the sun, less direct sunlight is reaching the Northern Hemisphere than the South

ern Hemisphere. What season is it in the Northern Hemisphere?(1 point)
winter

autumn

spring

summer

1 answer:

jekas [21]3 years ago

7 0

Answer:

Winter

Explanation:

Earth Rotates about an axis

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3 years ago

A violinist is tuning her instrument to concert A (440 Hz). She plays the note while listening to an electronically generated to

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To solve the problem it is necessary to take into account the concepts related to beat frequency, i.e., The number of those wobbles per second.

The equation that describes the beat frequency is

$f_{beat} = |f_2-f_1|$

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A) The frequency of the violin would be given by

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$f_2 = 445Hz or 435Hz$

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3 years ago

from the edge of the rooftop of a building, a boy thros a stone at an angle of 25 above the horizontal. The stone hits the groun

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Answer:38.675 m/s

Explanation:

$\theta =25^{\circ}$

t=4.2 s

$R_x=105m$

Solving in x direction

$R_x=ut+\frac{1}{2}\left ( 0\right )t^2$

$105=ucos25\times 4.2$

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Initial velocity in vertical direction usin25

Let h be the height of Rooftop

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Therefore final vertical velocity is $v_{vf}^2-\left ( usin25\right )^2=2\times 9.81\times 37.47$

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Final Resultant velocity

$V_{final}=\sqrt{29.51^2+24.99^2}$

$V_{final}=38.675 m/s$

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4 years ago