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borishaifa [10]

2 years ago

9

The diagram shows how Earth is tilted on its axis as it revolves around the Sun. What is the season in the United States when Ea

rth is in position C

1 answer:

Fudgin [204]2 years ago

5 0

Winter

It is winter because the Northern Hemisphere is not facing the sun.

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1. A big league hitter attacks a fastball! The ball has a mass of 0.16 kg. It is pitched at 38 m/s. After the player hits the ba

MariettaO [177]

Momentum = (mass) x (velocity)

Original momentum before the hit =

   (0.16 kg) x (38 m/s) this way <==

   =    6.08 kg-m/s this way <==

Momentum after the hit =

   (0.16) x (44 m/s) that way ==>

   = 7.04 kg-m/s that way ==>

Change in momentum = (6.08 + 7.04) = 13.12 kg-m/s that way ==> .
-----------------------------------------------

Change in momentum = impulse.

   Impulse = (force) x (time the force lasted)

13.12 kg-m/s = (force) x (0.002 sec)

(13.12 kg-m/s) / (0.002 sec) = Force

   6,560 kg-m/s² = 6,560 Newtons = Force

    ( about 1,475 pounds ! ! ! )

8 0

2 years ago

I WILL MARK BRAINIEST

ch4aika [34]

Answer:

i think answer b

Explanation:

8 0

2 years ago

Read 2 more answers

In si units, the electric field in an electromagnetic wave is described by ey = 104 sin(1.40 107x − ωt). (a) find the amplitude

melamori03 [73]

Answers:
(a) $B_o = 0.3466$ μT
(b) $\lambda = 0.4488$ μm
(c) f = $6.68 * 10^{14}Hz$

Explanation:
Given electric field(in y direction) equation:
$E_y = 104sin(1.40 * 10^7 x -\omega t)$

(a) The amplitude of electric field is $E_o = 104$ . Hence

The amplitude of magnetic field oscillations is $B_o = \frac{E_o}{c}$
Where c = speed of light

Therefore,
$B_o = \frac{104}{3*10^8} = 0.3466$ μT (Where T is in seconds--signifies the oscillations)

(b) To find the wavelength use:
$\frac{2 \pi }{\lambda} = 1.40 * 10^7$
$\lambda = \frac{2 \pi}{1.40} * 10^{-7}$
$\lambda = 0.4488$ μm

(c) Since c = fλ
=> f = c/λ

Now plug-in the values
f = (3*10^8)/(0.4488*10^-6)
f = $6.68 * 10^{14}Hz$

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2 years ago

I need help someone help me

GaryK [48]

what do you need , i mean your help , let me see if i can help

5 0

3 years ago

1: In a longitudinal wave, the particle displacement is __________ the direction of wave movement

jenyasd209 [6]

The answer is parallel

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2 years ago