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3 years ago

The idea that species change over time is called

Physics

2 answers:

Free_Kalibri [48]3 years ago

7 0

Evolution

hope this helps

qaws [65]3 years ago

4 0

The answer is evolution. When a specifies evolves over time they change and adapt to their environment.

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During the storm a tree fell over into a river what might happen to the tree

mart [117]

The tree might get swept away by the current and it will disappear when it catches on something

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3 years ago

What forms of energy are involved when snow on a mountain breaks loose, resulting in an avalanche?

Lynna [10]

1. Potential energy.
2.kinetic energy.

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3 years ago

Read 2 more answers

If the work required to speed up a car from 11 km/h to 21 km/h is 6.0×103 J , what would be the work required to increase the ca

goblinko [34]

Explanation:

We need convert the velocities first to m/s and we get the following:

v2 = 21 km/hr = 5.8 m/s

v1 = 11 km/hr = 3.1 m/s

We need to find the mass of the car also for later use do using the work-energy theorem:

$delta \: w = \frac{1}{2} m(v \frac{2}{2} - v\frac{2}{1} )$

6.0x10^3 J = (0.5) m [(5.8)^2 - (3.1)^2]

m = 499.4 kg

Now we determine work needed delta W to change its velocity from 21 km/hr to 33 km/hr

v2 = 33 km/hr = 9.2 m/s

v1 = 21 km/hr = 5.8 m/s

delta W = (0.5)(499.4)[(9.2)^2 - (5.8)^2]

= 1.3 x 10^4 J

6 0

3 years ago

A force generated by an underwater earthquake applied to oceans waves over a period of time changes the wave's momentum, this is

stich3 [128]

<u>Answer</u>:

A force generated by an underwater earthquake applied to the waves of the ocean during a period changes the momentum of the wave, this is referred to as tsunami.

<u>Explanation</u>:

Most of the tsunamis are caused due to earthquakes and are the most destructive. When an earthquake of magnitude more than 7.5 in the Richter scale hits the ocean, there is a huge stir on the river and the balance of the water above it deteriorates. Waves are produced when water tries to get back its equilibrium.

This wave is formed due to the rise in water at the epicenter of the crisis and moves around the epicenter in the form of concentric circles. Remember that not all the earthquakes cause tsunamis, but in the same situation when the earthquake causes a movement in the seawater in the vertical direction. This movement arises on the ocean floor due to earthquakes, fractures or the sliding of plates.

6 0

3 years ago

Spaceship A is 10 meters long and approaching you from the south at a speed of.7c while spaceship B, which is also 10 meters lon

Valentin [98]

Answer:

a) 0.94 C

b) 7.14 m

c) 3.11 m

d) 1.40 s

e) 2.93 s

Explanation:

First we need to set up a coordinate system. This will have the positive X axis pointing north. So spaceship A has positive speed, and spaceship B has negative speed.

The Lorentz transformation for speed is:

$u' = \frac{u - v}{1 - \frac{u*v}{c^2}}$