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3 years ago

Why was the idea of plate tectonics difficult for many scientists to accept for many years after it was first introduced?

1 answer:

5 0

It's kind of funny really. The guy who invented the idea in the first place had actually been made fun of because the thought of that happening was improbable in their mind. Also, Wegener ( the guy who invented the idea) was not even a geologist but a meteorologist. But later it had been backed up due to earthquakes being record consecutively in one area, and the graphs turning out differently.

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Energy transformed by a moving object is

QveST [7]

Kinetic energy is the energy an object has because of its motion. If we want to accelerate an object, then we must apply a force. ... Kinetic energy can be transferred between objects and transformed into other kinds of energy

4 0

4 years ago

The apparent backward movement of a planet is called

babymother [125]

The answer is D. Most of the rotational and orbital motions in the solar system are in the same "eastward" direction. Motions in this direction are referred to as direct motions while motions in the opposite direction are referred to as retrograde. Retrograde motion is the apparent backward motion of a planet caused by its being lapped by another planet or vice versa. Both planet move in a direct eastward motion around the sun, but the planet with the inside (smaller) orbit moves faster than the planet on the outside (larger orbit), and when it passes the slower moving planet, each sees the other one as apparently moving backward relative to its motion around the sky.

4 0

3 years ago

What are examples of velocity and speed

inysia [295]

Explanation:

A train moves at a high velocity. Velocity is the rate of motion, speed or action. An example of velocity is a car driving at 75 miles per hour.

4 0

3 years ago

A 2.9 × 103 kg car accelerates from rest under the action of two forces. One is a forward force of 1148 N provided by traction b

Lana71 [14]

Answer:

The car must travel 51.34 m for its speed to reach 2.7 m/s

Explanation:

Mass of car = 2.9 x 10³ kg

Forward force = 1148 N

Resistive force = 941 N

Total force = 1148 - 941 = 207 N

We know

Force = Mass x Acceleration

207 = 2.9 x 10³ x Acceleration

Acceleration = 0.071 m/s²

Now we have equation of motion, v² = u² + 2as

Initial velocity, u = 0 m/s

Final velocity, v = 2.7 m/s

Acceleration, a = 0.071 m/s²

Substituting

v² = u² + 2as

2.7² = 0² + 2 x 0.071 x s

s = 51.34 m

The car must travel 51.34 m for its speed to reach 2.7 m/s

5 0

4 years ago

The next stage in the development of superefficient cars may be an electric vehicle that uses a fuel cell.

xeze [42]

Answer:

That's not a question. And we have that already its called a hybrid. They have a gas engine with a fuel tank and a battery to save fuel.

Explanation:

Make it a question.

7 0

3 years ago