A direct result of european exploration of north america during the 1500s and early 1600s was the

Answers

Answer 1

Answer:

Answer:

introduction of new animals and crops to North America

Explanation:

Since the early 1500s, Europeans have transported old world species to their new settlements in the Western Hemisphere, as well as to other parts of the world. The manifestoes of Christopher Columbus' second and subsequent voyages, for example, mention the deliberate transportation of species considered potential crops and livestock. Global trade has grown astronomically since then, providing an opportunity for the corresponding growth of biological invasions. Consequently, biological invasions can be viewed as a predominantly post-Columbian event. Put in perspective, the movement of organisms caused by humans, accidentally or deliberately in the last 200 to 500 years, undoubtedly dwarfs in frequency and impact the movement of organisms by natural forces at any 500-year period in Earth's history.

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A particle has a charge of +1.5 µC and moves from point A to point B, a distance of 0.15 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric potential energy at A and B is EPEA - EPEB = +9.0 10-4 J. (a) Find the magnitude and direction of the electric force that acts on the particle. _______N the direction of motion (along, against, perpendicular) (b) Find the magnitude and direction of the electric field that the particle experiences. _______N/C the direction of motion (along, against, perpendicular)

Why was the Battle of the Bulge significant?a. It marked the Allies' first victory in a land battle.
b. It marked the Axis powers' first loss in a land battle.
c. It marked the liberation of the death camps.
d. It marked the last German offensive.

Answers

The Battle of the Bulge in the winter of 1944 was the last Great German offensive of the Second World War.

Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.Which best explains why Denise had fewer injuries to the area of her body that hit the grass? The grass did not exert a reaction force.
The grass did not exert an action force.
The grass shortens the time of the collision.
The grass extends the time of the collision.

Answers

Answer : Because the grass extends the time of the collision.

Explanation :

Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.

He had fewer injuries to the area of her body that hit the grass because the grass extends the time of the collision and hence it imparts less impulse.

i.e. $I=(F)/(t)$

Where

F is the force

t is the time of collision

Hence, the correct option is (d) " The grass extends the time of the collision ".

The grass extends the time of the collision

a balloon is ascending at 3.0 m/s at a height of 20.0 m above ground when a package is released. the time taken, in the absence of air resistance, for the package to reach the ground is:

Answers

Answer:

Approximately $2.35\; {\rm s}$ , assuming that $g = 9.81\; {\rm m\cdot s^(-2)}$ .

Explanation:

Under the assumptions, the package would start with an initial upward velocity of $u = 3.0\; {\rm m\cdot s^(-1)}$ and accelerate downward at a constant $a = (-g) = (-9.81)\; {\rm m\cdot s^(-2)}$ (negative because acceleration points downward.)

Right before landing, the package would be $20.0\; {\rm m}$ below where it was released. Hence, the displacement of the package at that moment would be $x = (-20.0)\; {\rm m}$ (negative since this position is below the initial position.)

The duration of the motion can be found in the following steps:

Apply the SUVAT equation $v^(2) - u^(2) = 2\, a\, x$ to find velocity $v$ right before landing.
Divide the change in velocity $(v - u)$ by acceleration to find the duration of the motion.

Rearrange the SUVAT equation $v^(2) - u^(2) = 2\, a\, x$ to find $v$ , the velocity of the package right before reaching the ground. Notice that because the package would be travelling downward, the value of $v\!$ should be negative.

$\begin{aligned} v &= -\sqrt{u^(2) + 2\, a\, x} \n &= -\sqrt{(3.0)^(2) + 2\, (-9.81)\, (-20.0)}\; {\rm m} \n &\approx (-20.035)\; {\rm m}\end{aligned}$ .

Subtract the initial velocity from the new value to find the change in velocity. Divide this change in velocity by acceleration (rate of change in velocity) to find the duration of the motion:

$\begin{aligned}t &= (v - u)/(a) \n &\approx ((-20.035) - (3.0))/((-9.81))\; {\rm s} \n &\approx 2.35\; {\rm s}\end{aligned}$ .

A substance that contains more hydroxide ions than hydronium ions in solution could have which pH value

Answers

A substance that contains more hydroxide ions than hydronium ions in solution could have which pH value that would be greater than seven.

What is a Chemical compound?

The chemical compound is a combination of two or more either similar or dissimilar chemical elements

For example, H₂O is a chemical compound made up of two oxygen atoms and a single hydrogen atom.

A material with a pH greater than 7 could have a solution with more hydroxide ions than hydronium ions. As pH levels over 7 signify that a solution is no longer neutral, it has the same number of hydrogen ions as OH ions but more hydroxide ions than hydrogen ions. because it is simpler.

Thus, a substance that contains more hydroxide ions than hydronium ions in solution could have which pH value that would be greater than seven.

Learn more about a chemical compound here,refer to the link given below ;

brainly.com/question/12166462

#SPJ6

A substance that contains more hydroxide ions than hydronium ions in solution could have a pH value that is greater than 7. As pH values greater than 7, indicates that the solution is not neutral anymore and thus possess same number of hydrogen as OH ions, but a greater amount of hydroxide ions than hydrogen ions. As it is more basic.

An insect is able to walk across the surface of a pond without sinking because of the A. polarity of the water molecules.
B. process of evaporation.
C. surface tension of the water.
D. adhesion of the insect's feet to the surface of the water.

Answers

C. surface tension of the water.

the answer to that will be D because it has nothing at all to do with the water because either way the water shall stay the same if the animal or insect could or could not be able to walk on water.

A person walks 25 m west and then 45 m at the angle of 60 degrees north of east what is the magnitude of the total displacement?

Answers

To solve this question, we need to use the component method and split our displacements into their x and y vectors. We will assign north and east as the positive directions.

The first movement of 25m west is already split. x = -25m, y = 0m.

The second movement of 45m [E60N] needs to be split using trig.
x = 45cos60 = 22.5m
y = 45sin60 = 39.0m

Then, we add the two x and two y displacements to get the total displacement in each direction.

x = -25m + 22.5m = -2.5m
y = 0m + 39.0m

We can use Pythagorean theorem to find the total displacement.
d² = x² + y²
d = √(-2.5² + 39²)
d = 39.08m

And then we can use tan to find the angle.
inversetan(y/x) = angle
inversetan(39/2.5) = 86.3

Therefore, the total displacement is 39.08m [W86.3N]

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