An electromagnetic wave traveling in a

A 5.22×104 kg railroad car moves on frictionless horizontal rails until it hits a horizontal spring stopper with a force constan

In-s [12.5K]

To solve this problem we will apply the principles of conservation of energy, for which we have to preserve the initial kinetic energy as elastic potential energy at the end of the movement. If said equality is maintained then we can affirm that,

$\text{Initial Energy}=\text{Final Energy}$

$\frac{1}{2} mv^2=\frac{1}{2} kx^2$

Here,

m = mass

k = Spring constant

x = Displacement

v = Velocity

Rearranging to find the velocity,

$mv^2 = kx^2$

$v^2 = \frac{kx^2}{m}$

$v = \sqrt{\frac{kx^2}{m}}$

Our values are,

$m = 5.22*10^4kg$

$k = 4.58*10^5N/m$

$x = 32cm = 0.32m$

Replacing our values we have,

$v = \sqrt{\frac{(4.58*10^5)(5.22*10^4)}{0.32}}$

$v = 2.733*10^5m/s$

Therefore the velocity is $2.733*10^5m/s$

8 0

4 years ago

Helen is driving her car if the kinetic energy of the car is 8.10 E4 J and the mass of the car and its contents is 1010 kg Helen

larisa86 [58]

( 8.10) x 10^4 J = ½(1010kg)V²
......................= 505V² 
( 8.10) x 10^4 J =[(.0505) x 10^4] V² ........<==10^4 cancels 
8.10 = .0505 V² 
.........______ 
V = ²√ 160.4 

V= 12.6 m/s 

(that's 12.6m/sec(1km/1000m)(3600secs/1hr) = 45.36kph) 
 my diagram is wrong, it is just an ordinary car,

6 0

3 years ago

Suppose you have a system that involves manufacturing and selling a product. In the Universal System Model, output would include

Mrac [35]

Answer:

The finished product

Explanation:

-The Universal Systems Model is a general conceptualization on how a process can be represented.

-There are four basic elements to the systems model:

input-Inputs are the basic materials or resources that will be transformed to the output.

process-represents the operations that occur to transform the inputs to the desired outputs.

input -represents the desired result, outcome, or goal.

feedback-is the element of control.

8 0

3 years ago

Every surface has different ____________________ of friction.

dedylja [7]

Answer:

amounts

Explanation:

every surface has different amounts of friction

hope this helps :) plz brainliest?

3 0

3 years ago

1. List some environmental challenges identified by the Brundtland Commission's overview, as well as a key strategy for addressi

natka813 [3]

The Brundtland Commission spotted as a matter of urgency, the interconnection between natural resource use and the economy.

<h3>What is the Brundtland Commission?</h3>

The Brundtland Commission was set up with the intention to achieve sustainable development. The tenure of the commission lasted from 1984 to 1987.

The commission identified the pillars of sustainable growth as economic growth, environmental protection, and social equality. The committee opined that environmental problem emanates from poverty in the southern region and reckless consumption of resources in the northern region.

The Brundtland Commission spotted as a matter of urgency, the interconnection between natural resource use and the economy.

Learn more about the Brundtland Commission:brainly.com/question/8285049?

#SPJ1

4 0

2 years ago