What is the measure of angle five

When designing an experiment, it is important to make sure your hypothesis is

ra1l [238]

It's D) valid and testable.

6 0

4 years ago

What obstacles will you need to deal with to build railroad routes

polet [3.4K]

Answer:

Construction of a railroad route is a strenuous task and one has to face several obstacles. 

Explanation:

Setting up the best possible plan for laying a rail route is a time-taking task. Several factors like economical nature of the plan, proper availability of building materials, minimum river crossings etc should be considered.

To build a railroad route the government has to get hold of the land through which the railroad route is planned. This is never an easy task. The people of the area have to be given adequate compensation and should be properly evacuated. The chances of people disapproving the plan are more.

4 0

3 years ago

A jet of water squirts out horizontally from a hole on the side of the tank as shown below. 0.579 m 1.45 m h If the hole has a d

klemol [59]

Answer:

The height of the water above the hole in the tank is 58 mm

Explanation:

In order to solve this problem we need to draw a sketch of the dimensions that include the input variables of the problem.

Where:

x = 0.579[m]

y = 1.45 [m]

Using the following kinematic equation we can find the time that takes the water to hit the ground, and then with this time, we can find the velocity of the water in the x-component.

$y = y_{o} +v_{o} *t+\frac{1}{2} *g*t^{2} \\$

It is necessary to clarify the value of each of the respective variables below

y = - 1.45 [m] "It is negative because this point is below the water outlet"

yo = 0

vo = 0 "The velocity is zero because the component of the speed on the Y-axis does not exist"

therefore:

$-1.45=0.5*(-9.81)*t^{2} \\t = \sqrt{\frac{1.45}{0.5*9.81} } \\t = 0.543[s]$

The next step is to determine the velocity in component x, knowing the time.

$v=\frac{x}{t} \\v=\frac{0.579}{.543} \\v = 1.06[m/s]$

Now using torricelli's law we can find the elevation.

$v=\sqrt{2*g*h} \\h=\frac{v^{2} }{2*g} \\h=\frac{1.06^{2} }{2*9.81} \\h= 0.057[m] = 57.95[mm]$

3 0

3 years ago

If two identical cars are traveling at different velocities, which car has the greatest momentum

vodomira [7]

Answer:

The one with highest velocity

Explanation:

The momentum of an object is given by

$p=mv$

where

m is the mass of the car

v is the velocity of the car

In this problem, we have two identical cars: identical means they have same mass, so

$m_1 = m_2 = m$

The momentum of car 1 is

$p_1 = mv_1$

while the momentum of car 2 is

$p_2 = mv_2$

By comparing the two expressions, we see that the car with greatest momentum is the one with highest velocity, since the mass is the same.

8 0

4 years ago

A Chinese-American engineering student with traditional Asian values went to a college counselor because he was frustrated with

Vladimir79 [104]

Answer:

C. This is because he is asking him to disregard what his parents are saying and listen to his own values. This is not morally wrong, just the answer that works in that situation.

5 0

3 years ago