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agasfer [191]
4 years ago
15

Oceanic crust that records negative magnetic anomalies formed when the earth's magnetic field was ___________.

Physics
1 answer:
lapo4ka [179]4 years ago
6 0
They were attracted to each other
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What is the speed, in m/s, of a wave on a cord if it has a wavelength of 4m and a period of 0.5 s
Fittoniya [83]
Using v=Π/p = 4/0.5 = 8ms-¹
8 0
3 years ago
Complete the sentence
scoray [572]

The object is at rest.


This is due to the fact hwen two forces act upon each other on opposite sides, the movement of the object does not change due to the net force equaling 0.

6 0
3 years ago
What is the displacement if I walk three blocks east two blocks south one block west and two blocks north
vladimir1956 [14]

Answer:

south east

Explanation:

because two step to the east then a step to the west displaces one to east still but southwards

4 0
3 years ago
A 2150 kg satellite used in a cellular telephone network is in a circular orbit at a height of 780 km above the surface of the e
Tom [10]

Answer:

a)F=16741.9N

b)\frac{F}{W}=0.795

Explanation:

The gravitational force on the satellite is calculated with Newton's Gravitation Law:

F=\frac{GMm}{r^2}

Where M=5.97\times10^{24}kg is Earth's mass, m=2150kg is the satellite mass, r=R+h is the distance between their centers, where h=780000m is the height of the satellite (from Earth's surface) and R=6371000m is Earth's radius, and G=6.67\times10^{-11}Nm^2/kg^2 is the gravitational constant.

a) With these values we then have:

F=\frac{GMm}{r^2}=\frac{(6.67\times10^{-11}Nm^2/kg^2)(5.97\times10^{24}kg)(2150kg)}{(6371000m+780000m)^2}=16741.9N

b) And the fraction this force is of the satellite’s weight <em>W=mg</em> is:

\frac{F}{W}=\frac{GMm}{mgr^2}=\frac{GM}{gr^2}=\frac{(6.67\times10^{-11}Nm^2/kg^2)(5.97\times10^{24}kg)}{(9.8m/s^2)(6371000m+780000m)^2}=0.795

5 0
4 years ago
What is the reversal experienced by an image formed in a plane mirror called?
algol [13]

Answer:

Lateral Inversion

Explanation:

lateral inversion simply means the change around of the image of an object from side to side

The image of an object formed by a plane mirror is laterally inverted.

5 0
3 years ago
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