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3 years ago

Different organisms live in different types of ecosystems because they are adapted to different conditions. true or false

1 answer:

6 0

True! Some organisms are built for different ecosystems, climates, etc. and some choose to adapt to the living conditions.

I hope that helped!!

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Two stationary positive point charges, charge 1 of magnitude 3.05 nC and charge 2 of magnitude 1.85 nC, are separated by a dista

luda_lava [24]

To solve this problem we will apply the concepts related to voltage as a dependent expression of the distance of the bodies, the Coulomb constant and the load of the bodies. In turn, we will apply the concepts related to energy conservation for which we can find the speed of this

$V = \frac{kq}{r}$

Here,

k = Coulomb's constant

q = Charge

r = Distance to the center point between the charge

From each object the potential will be

$V_1 = \frac{kq_1}{r_1}+\frac{kq_2}{r_2}$

Replacing the values we have that

$V_1 = \frac{(9*10^9)(3.05*10^{-9})}{0.41/2}+\frac{(9*10^9)(1.85*10^{-9})}{0.41/2}$

$V_1 = 215.12V$

Now the potential two is when there is a difference at the distance of 0.1 from the second charge and the first charge is 0.1 from the other charge, then,

$V_1 = \frac{(9*10^9)(3.05*10^{-9})}{0.1}+\frac{(9*10^9)(1.85*10^{-9})}{0.41-0.1}$

$V_2 = 328.2V$

Applying the energy conservation equations we will have that the kinetic energy is equal to the electric energy, that is to say

$\frac{1}{2} mv^2 = q(V_2-V_1)$

Here

m = mass

v = Velocity

q = Charge

V = Voltage

Rearranging to find the velocity

$v = \sqrt{ \frac{2q(V_2-V_1)}{m}}$

Replacing,

$v = \sqrt{ \frac{-2(1.6*10^{-19})(328.2-215.12)}{9.11*10^{-3}}}$

$v = 6.3*10^6m/s$

Therefore the speed final velocity of the electron when it is 10.0 cm from charge 1 is $6.3*10^6m/s$

6 0

3 years ago

when a driver presses the brake pedal his car stops with an acceleration -2.1 m/s2. How far will the car travel while coming to

charle [14.2K]

When a driver presses the brake pedal his car stops with an exhilaration -20

4 0

3 years ago

A man has a mass of 70kg. Calculate his weight on earth where the gravitational strength is 10 N/kg

maw [93]

Answer:

So the weight of the body is 700N

Explanation:

mass of the object=70kg

force of gravity=10N/kg

weight of the object=w-?

as we know that

weight=mass × force of gravity

weight=70kg × 10N/kg

WEIGHT OF THE BODY=700N

I HOPE IT WILL HELP YOU

GOOD LUCK FOR THE ASSIGNMENT

4 0

3 years ago

While riding on I-26 towards Columbia, your mother slams on the brakes, to avoid hitting the car in front of her. Both of your b

emmasim [6.3K]

Hi,

Newton's Law of Inertia explains this action because the resistance of the seat belt allows the change in its state of motion. So because the change of speed, your body moves forward but is restricted by the seat belt.

Have a great day!

4 0

3 years ago

Andrea and the other members of the tennis team are practicing hitting tennis balls. If two people hit identical balls at the sa

Pachacha [2.7K]

If two people hit identical tennis balls at the same time, the ball that has the most kinetic energy is the ball that moves at the fastest speed.

<u>Explanation:</u>

The energy possessed by an object by virtue of its motion is called its kinetic energy indicating that only moving objects have kinetic energy. The kinetic energy of an object depends on its speed and mass.

It is given by the expression

$K=1/2 mv^2$

where m denotes the mass of the object and v denotes its velocity.

since kinetic energy is directly proportional to the square of the velocity, the kinetic energy of an object increases with its velocity.

Hence an object that moves at the fastest speed will have the most kinetic energy.

8 0

3 years ago