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3 years ago

Psychology:

Physics

2 answers:

Bas_tet [7]3 years ago

5 0

Answer:

False is correct

Explanation:

Peace and Love

mestny [16]3 years ago

4 0

Answer:

thank you

Explanation:

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Vapor pressure is related to the temperature of the liquid. user: in an open system, the vapor pressure is equal to the _____. i

iVinArrow [24]

Answer

-Directly; outside air pressure

Vapor pressure is directly related to the temperature of the liquid. user: in an open system, the vapor pressure is equal to the outside air pressure.

Explanation;

-As the temperature of a system increases, the average kinetic energy of the molecules increases in both the liquid and gas phases.

-A higher average kinetic energy facilitates the escape of molecules from the liquid phase into the gas phase. At the same time, the rate of return of gas phase molecules to the liquid also increases. A new equilibrium point is reached at a higher gaseous vapor pressure. The increase in vapor pressure with temperature is exponential.

6 0

3 years ago

Read 2 more answers

Which statement explains whether or not a person should use an experiment of a ball rolling down a hill as evidence that the for

Ksenya-84 [330]

The ball raised up the hill is given gravitational potential energy, which

causes it to roll spontaneously down the hill.

The statement that explains whether the ball rolling down the hill

experiment should be used is; The experiment shows the ball falls toward

the bottom of the hill, so it provides direct evidence that gravity pulls an

object downward. They should use it.

Reason:

The equation for the velocity of a ball falling down a hill is $v = \sqrt{\dfrac{10}{7} \cdot g \cdot h}$

Therefore, by increasing the height from which the ball rolls down the hill,

the velocity of the ball increases, which indicates that the ball is

accelerating, and therefore, being acted on by a force, the force of gravity.

Therefore;

Given that the ball falls or moves with increasing speed towards

the bottom of the hill, which shows that the motion is due to Earth's pull

known as the gravitational force, the experiment should be used.

Learn more here:

brainly.com/question/3175380

8 0

2 years ago

Which of the following organisms are known as producers?

timofeeve [1]

Answer:

A,B.D

Explanation:

4 0

3 years ago

Read 2 more answers

A car's bumper is designed to withstand a 6.84 km/h (1.9-m/s) collision with an immovable object without damage to the body of t

den301095 [7]

Answer:

F = 5.256 x $10^{3} N$

Explanation:

From the work energy theorem we know that:

The net work done on a particle equals the change in the particles kinetic energy:

W = F.d, ΔK = $\frac{1}{2} mv^{2}_{f} - \frac{1}{2} mv^{2}_{i} , F.d = \frac{1}{2}mv^{2}_{f} -\frac{1}{2} mv^{2}_{i}$

where:

W = work done by the force

F = Force

d = Distance travelled

m = Mass of the car

vf, vi = final and initial velocity of the car

kf, ki = final and initial kinetic energy of the car

Given the parameters;

m = 830kg

vi = 1.9 m/s

vf = 0 km/h

d = 0.285 m

Inserting the information we have:

F.d = $\frac{1}{2} mv^{2}_{f} - \frac{1}{2} mv^{2}_{i}$

F = $\frac{\frac{1}{2} mv^{2}_{f} - \frac{1}{2} mv^{2}_{i} }{d}$

F = $\frac{ 0 - \frac{1}{2} X830 X 1.9^{2} }{0.285}$

F = 5.256 x $10^{3} N$

3 0

3 years ago

When a rattlesnake strikes, its head accelerates from rest to a speed of 32 m/s in 0.63 seconds. Assume for simplicity that the

irina [24]

Answer:

Power, P = 162.53 Watts

Explanation:

Given that,

Mass, m = 200 g = 0.2 kg

Initial speed of the snake, u = 0

Final speed of the snake, v = 32 m/s

Time, t = 0.63 s

Power of an object is given by :

$P=\dfrac{W}{t}$

$P=\dfrac{\Delta K}{t}$

$P=\dfrac{mv^2}{2t}$

$P=\dfrac{0.2\times (32)^2}{2\times 0.63}$

P = 162.53 Watts

So, the power of the rattlesnake is 162.53 Watts. Hence, this is the required solution.

4 0

3 years ago