All categories

3 years ago

In the diagram, ∠D is b

Physics

1 answer:

Degger [83]3 years ago

3 0

Answer:

The answer is B

Explanation:

You might be interested in

A child’s toy sits on the bottom of a swimming pool in which the water depth is d=1.8 m. To a child standing at the pool edge, t

navik [9.2K]

Answer:

Horizontal distance is 1.28 + 2.04 = 3.32 m

Explanation:

Given data:

from below figure

Applying Pythagoras theorem

from Snell's law

$\frac{sin i}{sin r} = \frac{n_2}{n_1} = \frac{\frac{EF}{AB}}{\frac{DE}{BD}}$

$1.33 =\frac{ \frac{2.04}{\sqrt{(3.5 -1.8)^2 + 2.04^2}}}{\frac{x}{\sqrt{1.8^2 + x^2}}}$

solving for x we have

$x^2 = 1.626$

x = 1.28

Horizontal distance is 1.28 + 2.04 = 3.32 m

8 0

3 years ago

A force acts upon an object causing displacement of the object is the definition of ?

chubhunter [2.5K]

The answer is displacement

3 0

3 years ago

Which energy resource produces greenhouse gases when it is used?

Hunter-Best [27]

Burning carbon compounds produces carbon monoxide and carbon dioxide.

The most popular sources of carbon compounds used for burning are
coal, oil, and natural gas, collectively referred to as "fossil fuels".

6 0

3 years ago

Read 2 more answers

Make vector A on the simulation have a magnitude of exactly 10 units. What were the starting points and ending points of your ve

Gwar [14]

Answer:

Making a vertical vector, we have a starting point at (-5,2) and an end point at (5,2) that will give us a vector of magnitude of 10 units.

Explanation:

In order to make vectors that have a magnitude of 10 units, the distance between the starting and ending points must be equal to 10.

The easiest way is to set points on either an horizontal or vertical line to make horizontal or vertical vectors.

We can have starting point at (-5,2) and then move up 10 units so we will be at the ending point (5,2), thus the distance between them is 10 units so the vector has a magnitude of 10 units.

We can verify that using the formula for the magnitude which requires first to find the vector.

$\vec v = \text{End point } - \text{Start point}$

So for the points we have

$\vec v = (5,2)-(-5,2)$

We can work with each component, for the x component we have 5-(-5) which give us 10 and for the y component we have 2-2 which give us 0, so the vector is

$\vec v =$

Thus its magnitude is

$|v|= \sqrt{v_x^2+v_y^2}\\|v|= \sqrt{10^2+0^2}\\|v|=\sqrt{100}\\|v|=10$

Thus we have verified our vector has a length 10.

7 0

4 years ago

Compare and contrast an earthquake and a tsunami.

Scorpion4ik [409]

Answer:

An earthquake is a trembling movement of the earth's crust. These tremors are generally caused by shifts of the plates that make up the earth's surface. ... A tsunami (pronounced soo-NAHM-ee) is a series of huge waves that occur as the result of a violent underwater disturbance, such as an earthquake or volcanic eruption.

Explanation:

4 0

3 years ago