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3 years ago

Explain using the laws of physics why the moon orbits the earth.

Physics

1 answer:

weqwewe [10]3 years ago

7 0

Answer:

the moon orbit's the earth in part because of centrifugal force added to the gravity of the earth and sun keeps the moon in the perfect balance that it is in.

Explanation:

centrifugal force is when an object pulls "out" like when you swing some around your body it pulls outward which is why the string is taught so the force pulling it in is the same as the force pulling out as the moon orbits.

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A seismic wave travels from rock into sea water. In rock, the wave has a speed of 3,950 m/s and a wavelength of 560m. In seawate

icang [17]

This question involves the concepts of wave speed, wavelength, and frequency.

The frequency of the wave in seawater will be "2.68 Hz".

<h3>FREQUENCY</h3>

The relationship between speed, wavelength, and frequency of the wave can be given by the following formula:

$v=f\lambda\\\\\lambda =\frac{v}{f}$

Here, the wavelength of the wave is a constant property. Therefore,

$\frac{v_1}{f_1}=\frac{v_2}{f_2}$

where,

v₁ = speed of the wave in the rock = 3950 m/s
v₂ = speed of the wave in the seawater = 1500 m/s
λ = wavelength = 560 m
f₁ = frequency of the wave in the rock = $f_1=\frac{v_1}{\lambda}=\frac{3950\ m/s}{560\ m} = 7.05\ Hz$
f₂ = frequency of the wave in the seawaater = ?

Therefore,

$\frac{3950\ m/s}{7.05\ Hz}=\frac{1500\ m/s}{f_2}\\\\f_2=\frac{(1500\ m/s)(7.05\ Hz)}{3950\ m/s}$

f₂ = 2.68 Hz

Learn more about wavelength here:

brainly.com/question/7143261

6 0

2 years ago

What are the x and y components of a 100m/s velocity acting at an angle of 37° from the positive x axis

katrin2010 [14]

Answer:

x component = 79.86

Y component = 60.18

Explanation:

x component = 100cos37 = 79.86

y component = 100sin37 = 60.18

8 0

3 years ago

You are driving to the grocery store at 20 m/s. You are 110 m from an intersection when the light turns red. You have a reaction

Lynna [10]

Answer:

reaction time = 0.70 s

distance travelled in reaction time = v*t

= 20 m/s * 0.70 s

= 14 m

So, when brake is applied, distance remaining= 110 m - 14 m = 96 m

Answer: 96 m

vf = 0 m/s

d = 96 m

vi = 20 m/s

use:

vf^2 = vi^2 + 2*a*d

0 = 20^2 + 2*a*96

-400 = 2*a*96

a = -2.08 m/s^2

Answer: -2.08 m/s^2

use:

vf = vi + a*t

0 = 20 - 2.08*t

t = 9.6 s

Answer: 9.6 s

Explanation:

8 0

3 years ago

HELP PLS ✨<br> What type of lava is in the Cerro Negro Volcano?

ale4655 [162]

Answer:

basaltic cinder cone

Explanation:

The volcano consists of a black ("negro") basaltic cinder cone with associated lava flows, including an aa flow field reaching 4 km to the NE and SW. The frequent eruptions of Cerro Negro have modified its morphology continuously since its birth 160 years ago

4 0

3 years ago

A pitcher throws a 0.145-kg baseball at a velocity of 30.0m/s. How

nata0808 [166]

Answer: 65.25 J

Explanation:

Kinetic Energy K.E. = 1/2 * m * v^2 ; where m is the mass of the body and v is the velocity of the body ; K.E. = 1/2 * 0.145 * 30 * 30 = 65.25 Joules

6 0

3 years ago