A deposit windblown sand is called

Answers

Answer 1

Answer: the deposit of sand by wind are called as sanddunes.

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If a plane has an airspeed of 40 m/s and is experiencing a crosswind of 30 m/s, what is its ground speed in m/s?

Answers

Answer:50 $ms^(-1)$

Explanation:

Let $v_(a)$ be the airspeed.

Let $v_(w)$ be the cross wind speed.

We know that,ground speed is the vector sum of airspeed and cross wind speed and airspeed is perpendicular to cross wind speed.

If $v_(1)$ and $v_(2)$ are two perpendicular vectors,the resultant vector has the magnitude $\sqrt{|v|_(1)^(2)+|v|_(2)^(2)}$

Given,

$v_(a)=40ms^(-1)\nv_(c)=30ms^(-1)$

So,the ground speed is $\sqrt{40^(2)+30^(2)}=√(2500)=50ms^(-1)$

Modern dual-processing theory is the idea that our minds have —tracks.
O
A. conscious and unconscious
O
B. emotional and rational
O
C. conscious and preconscious
O
D. subconscious and conscious

Answers

Modern dual-processing theory is the idea that our minds have conscious and unconscious tracks. A

Answer:

conscious and unconscious

Explanation:

Why do ice cubes always float at the top of a glass of water?

Answers

Because water is a very very very very very unusual substance ... It's
the only known substance whose solid form is less dense than its liquid
form near the same temperature.

In other words, water is the only known substance for which a solid lump
of it floats in a liquid glass of it.

If that were not true ... if the behavior of the density of water around its
freezing temperature were the same as the density of all other known
substances ... then life on Earth would be impossible.

Think about that for a while ! Ya gotta admire whoever it was that designed water !

because ice is less dense than liquid water

Which is the best example of the concept of heredity? A. A black cat blends into its environment at night. B. A baby has his mother's hair and eye color. C. As a barnacle grows, it gets calcium for its shell from seawater. D. The sunflower will move so its flower head is always facing the sun.

Answers

B) A baby has his mother's hair and eye color

B. A baby has it's mother's hair and eye color

The reason for this is, well, heredity is the passing of traits from parents to offspring. So, a black cat blending into it's environment at night simply does not have much to do with heredity. But a baby inheriting it's mother's eye color and hair color is definitely heredity, for it was inherited.

Hope this helped!!

Listen →A 6.0-kilogram cart initially traveling at 4.0 meters per second east accelerates uniformly at 0.50 meter per second squared east for 30 seconds. What is the speed
of the cart at the end of this 3.0 second interval?

Answers

Answer:

V = 20.5 m/s

Explanation:

Given,

The mass of the cart, m = 6 Kg

The initial speed of the cart, u = 4 m/s

The acceleration of the cart, a = 0.5 m/s²

The time interval of the cart, t = 30 s

The final velocity of the cart is given by the first equation of motion

v = u + at

= 4 + (0.5 x 30)

= 19 m/s

Hence the final velocity of cart at 30 seconds is, v = 19 m/s

The speed of the cart at the end of 3 seconds

V = 19 + (0.5 x 3)

= 20.5 m/s

Hence, the final velocity of the cart at the end of this 3.0 second interval is, V = 20.5 m/s

The strength of the magnetic field_____.

Answers

The strength of magnetic field is one of two ways that the intensity of a magnetic field can be expressed, Technically, a distinction is made between magnetic field strength H, measured in amperes per meter (A/M) and magnetic flux density, B measured in Newton Meters per ampere (Nm/A)

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