How can you predict a child'a height?

T Or F- True or False There three types of cloud's are .

AURORKA [14]

Answer:

There are three main cloud types.

The foundation consists of 10 major cloud types. In addition to cirrus, stratus, cumulus, and nimbus clouds, there are cirrostratus, cirrocumulus, altostratus, altocumulus, stratocumulus, nimbostratus, and cumulonimbus clouds. The following table places these cloud types into the four major cloud groups.

Explanation:

So false, depends what you have learned and your grade level ig

7 0

3 years ago

What is the angle θ between vectors A⃗ and B⃗ if A⃗ =4ı^−4ȷ^ and B⃗ =−5ı^+7ȷ^?

ololo11 [35]

The characteristics of the scalar product allows to find the angle between the two vectors is:

The angle θ = 170º

The scalar product is the product between two vectors whose result is a scalar.

A . B = |A| |B| cos θ

Where A and B are the vectors, |A| and |B| are the modules of the vectors and θ at the angle between them.

The vector is given in Cartesian coordinates and the unit vectors in these coordinates are perpendicular.

i.i = j.j = 1

i.j = 0

A . B = (4 i - 4j). * -5 i + 7j)

A . B = - 4 5 - 4 7

A. B = -48

We look for the modulus of each vector.

|A| = $\sqrt{x^2 +y^2 }$

|A| = $\sqrt{4^2 + 4^2}$

|A| = 4 √2

|B| = $\sqrt{5^2 +7^2}$

|B| = 8.60

We substitute.

-48 = 4√2 8.60 cos θ

-48 = 48.66 cos θ

θ = cos⁻¹ $\frac{-48}{48.664}$

θ = 170º

In conclusion using the dot product we can find the angle between the two vectors is:

the angle θ = 170º

Learn more about the scalar product here: brainly.com/question/1550649

8 0

3 years ago

A 100 kilogram person acquires a velocity of 15 meters per second down a ski slope.What is the skier's kinetic energy?

azamat

11250J

Explanation:

Given parameters:

Mass of the person = 100kg

Velocity = 15m/s

Unknown:

Kinetic energy = ?

Solution:

The kinetic energy of a body is energy due to the motion of the body.

Kinetic energy = $\frac{1}{2}$ m v²

m is the mass of the body

v is the velocity

Substituting the parameters:

K. E = $\frac{1}{2}$ x 100 x 15² = 11250J

Learn more:

Kinetic energy brainly.com/question/6536722

#learnwithBrainly

4 0

3 years ago

The desperate contestants on a TV survival show are very hungry. The only food they can see is some fruit hanging on a branch hi

emmasim [6.3K]

Answer:

(a) v = 15m/a

(b) No they won't feast because the rock can only rise to a height of 11.5m which is less than 15m.

Explanation:

Please see the attachment below for film solution.

6 0

3 years ago

A bike is traveling to the left with the speed of 27 m/s when the rider slams on the brakes. The bike skids for 41.5 m with the

Darina [25.2K]

The acceleration of the bike is equal to $8.78\frac{m}{s^{2}}$ opposing the movement (to the right).

Why?

Since after the rider slams the brakes, the bike came to a stop, we know that the acceleration is opposite to the velocity/movement.

We can use the following equation to calculate the acceleration:

$v_{f}^{2}=v_{o}^{2}+2*a*d$

So, substituting, we have: (let's consider negative to the left and positive to the right)

$0=(-27\frac{m}{s} )^{2}+2*a*41.5m\\\\0=729\frac{m^{2} }{s^{2} }+83*a\\\\a=\frac{-729\frac{m^{2}}{s^{2}}}{83m}=-8.78\frac{m}{s^{2}}$

The negative sign means that the acceleration's direction is opposite to the movement.

Hence, we have that the acceleration is equal to $8.78\frac{m}{s^{2}}$ opposing the movement (to the right).

Have a nice day!

5 0

4 years ago

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