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4 years ago

What do scientists think cause the movement of crustal plates

Physics

2 answers:

Novay_Z [31]4 years ago

5 0

The movement of the molten rocks underneath the plates

julia-pushkina [17]4 years ago

5 0

Scientists think convection currents are what cause earth's plates to move. A convection current is caused by differences in temperature. Mantle material close to earth's core is very hot. Mantle material near the lithosphere is cooler.

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Motion is...

Natalka [10]

A chain position over a certain amount of time

7 0

4 years ago

A ball is tossed upwards into the air with an initial upwards velocity of 3.0m/s. What is the ball's velocity when it returns to

krek1111 [17]

Same as initial velocity.
Acceleration due to gravity is 9.8m/s^2

Which is constant on the whole way of travel of the ball.

As no change in acceleration there is no change in velocity at end and it remains at 3m/s

7 0

3 years ago

What happens to hotter air in the atmosphere?

Ber [7]

B.Warmer air molecules move faster and get farther apart. As they get farther apart, they become less dense and rise.

5 0

3 years ago

A mass m = 0.6 kg is released from rest at the top edge of a hemispherical bowl with radius = 1.1 meters. The mass then slides w

Aneli [31]

Answer:

The angle is $\theta = 36.24 ^o$

Explanation:

From the question we are told that

The mass is $m = 0.6 \ kg$

The radius is $r = 1.1 \ m$

The speed is $v = 3.57 \ m /s$

According to the law of energy conservation

The potential energy of the mass at the top is equal to the kinetic energy at the bottom i.e

$m * g * h = \frac{1}{2} * m * v^2$

=> $h = \frac{1}{2 g } * v^2$

Here h is the vertical distance traveled by the mass which is also mathematically represented as

$h = r * sin (\theta )$

$\theta = sin ^{-1} [ \frac{1}{2* g* r } * v^2]$

substituting values

$\theta = sin ^{-1} [ \frac{1}{2* 9.8* 1.1 } * (3.57)^2]$

$\theta = 36.24 ^o$

3 0

4 years ago

which of the following are examples of circular motion? A. Roller skating down a hill. B. A race car going around a rounded curv

Katena32 [7]

Answer:

C. Earth going around the sun.

Explanation:

Circular motion should have a center to repeat its motion.

6 0

3 years ago