I have no idea how to do this

How do distinctive rock strata support the theory of continental drift?

Scorpion4ik [409]

“It states that parts of the Earth's crust slowly drift atop a liquid core. The fossil record supports and gives credence to the theories of continental drift and plate tectonics. ... Continental Coastlines appearing to fit together,Fossil Distrubution, Distinctive Rock Strata, and Coal Distrubution.”

Hope this helps!

~Mia

4 0

4 years ago

This type of reaction is most like breaking a rack of balls at the start of a game of pool:

Svet_ta [14]

The answer is b fission hope this helps

5 0

4 years ago

A planar electromagnetic wave is propagating in the +x direction. At a certain point P and at a given instant, the electric fiel

jeka94

Answer:

$B=2.74\times 10^{-10}\ T$

Explanation:

It is given that,

A planar electromagnetic wave is propagating in the +x direction.The electric field at a certain point is, E = 0.082 V/m

We need to find the magnetic vector of the wave at the point P at that instant.

The relation between electric field and magnetic field is given by :

$c=\dfrac{E}{B}$

c is speed of light

B is magnetic field

$B=\dfrac{E}{c}\\\\B=\dfrac{0.082}{3\times 10^8}\\\\B=2.74\times 10^{-10}\ T$

So, the magnetic vector at point P at that instant is $2.74\times 10^{-10}\ T$ .

3 0

3 years ago

A beam of protons is directed in a straight line along the +z direction through a region of space in which there are crossed ele

IceJOKER [234]

Answer:

B = 7.6 T direction of + x

Explanation:

For the proton beam to continue in the same direction the electric and magnetic forces must be equal

$F_{m} - F_{e}$ = 0

$F_{m}$ = F_{e}

Fm = q E

The electric force is in the direction of the electric field because it is the charge of the positive proton, the electric force goes in the direction of –y, therefore, the magnetic force cancels this force must go in the direction of + y

The magnetic force is

F_{m} = q v x B = q v B sin θ

θ = 90

B = q E / q v

B = E / v

B = 800/105

B = 7.6 T

To find the direction of the magnetic field we use the right hand rule, the thumb goes in the direction of the proton velocity, the fingers extended in the direction of the magnetic field and the palm is the direction of force, for a positive charge.

Thumb goes in the direction of the + z axis

Palm in the direction of +y

Fingers point in the direction of + x

7 0

3 years ago

Chanice drives her scooter 7 kilometers north. she stops for lunch and then drives 5 kilometers and then 1 km east again. what d

lord [1]

Distance covered is given as follows

1). 7 km North

2). 5 km North

3). 1 km East

Now total distance covered will be given as