Question 2 of 10<br> Which two types of energy does a book have as it falls to the floor?

In still water, a boat averages 18 18 miles per hour. it takes the same amount of time to travel 16 miles 16 miles downstream,

Vladimir79 [104]

<span>The current is 6 miles per hour.
Let's create a few equations:
Traveling with the current:
(18 + c)*t = 16

Traveling against the current:
(18 - c)*t = 8

Let's multiply the 2nd equation by 2
(18 - c)*t*2 = 16

Now subtract the 1st equation from the equation we just doubled.
(18 - c)*t*2 = 16
(18 + c)*t = 16

(18 - c)*t*2 - (18 + c)*t = 0
Divide both sides by t
(18 - c)*2 - (18 + c) = 0

Now solve for c
(18 - c)*2 - (18 + c) = 0
36 - 2c - 18 - c = 0
36 - 2c - 18 - c = 0
18 - 3c = 0
18 = 3c
6 = c

So the current is 6 mph.
Let's verify that.
(18 + 6)*t = 16
24*t = 16
t = 16/24 = 2/3

(18 - 6)*t = 8
12*t = 8
t = 8/12 = 2/3

And it's verified.</span>

4 0

3 years ago

Which three statements contain information about cats that is based on scientific knowledge rather than opinion? A. Cats eat rod

Anastasy [175]

Answer:

The answer of this question is A

6 0

2 years ago

What are hot clouds of gaseous elements and compounds that act as nurseries for stars

Aleks04 [339]

Interstellar gas clouds are common in many galaxy, like the Orion nebulae which many young stars are being born. A typical nebula is many light years in diameter and contains enough material mass to make several thousand stars the size of our sun. The majority of the gas in nebulae consist of molecules of hydrogen and helium-but most nebulae also contain atoms of other elements. All known element in our periodic table is also being made inside this crucible of this immense hot gas. The source of the organic molecules is still a mystery. Irregularities in the density of the gas causes a net gravitational force that pull the gas molecules close together.

3 0

3 years ago

Consider the case in which the clay is launched along Path Y. The sphere of clay is launched with an initial velocity of v0 and

Helen [10]

Answer:

w = $\frac{m}{ml^2 + I R^2 }$ v l

Explanation:

Let's form a system formed by the clay sphere and the rod, in this case the angular momentum is conserved

initial instant. Before the crash

L₀ = m v l

Final moment. After the collision with the clay stuck to the rod

L_f = I_{total} w

angular momentum is conserved

L₀ = L_f

m v l = I_total w

w = $\frac{m}{I_{total} }$ v l

the total moment of inertia is the sum of the moments of inertia of the two bodies

the moment of inertia of the rod is

I_rod = I R²

I_total = m l² + IR²

we substitute

w = $\frac{m}{ml^2 + I R^2 }$ v l

4 0

2 years ago

Question 1 of 10

Hoochie [10]

Answer:

The neutron is a subatomic particle, symbol

n

or

n0

, with no electric charge and a mass slightly greater than that of a proton. Protons and neutrons constitute the nuclei of atoms. Since protons and neutrons behave similarly within the nucleus, and each has a mass of approximately one atomic mass unit, they are both referred to as nucleons.[6] Their properties and interactions are described by nuclear physics.

Explanation:

pls mark me as BRAINLIEST

5 0

3 years ago

Question 2 of 10 Which two types of energy does a book have as it falls to the floor?