At what point on a roller coaster is the kinetic energy increasing?
1.At the bottom of the hill.
2.As it is going down the hill.
3.As it is climbing the hill.
4.At the top of the hill.
the wrong answer to just get points = banned
I will give brainliest

Answer:

29 m/s.

Explanation:

Hope this helps.

Answer:

*Atomos of a certain element contain a fixed amount of energy.

Explanation:

The atoms are said to be closed systems because the number of protons, neutrons and electrons is fixed, so these elements each have an energy given by the electrical interaction with the other elements.

Consequently, the correct answer is: Atomos of a certain element contain a fixed amount of energy.

Answer:

Atoms of a certain element contain a fixed amount of energy.

Explanation:

Answer:

b,c,d,and f are the car traveling at the sane velocity

Answer:

Explanation:

hope this helps!

thermal,true the explanation is because the other guy said so

Answer:

The lines are parallel and the students data is 13

Explanation:

The amount of salt added

Answer:

When the time of fall is doubled, the height of fall will be quadrupled

Explanation:

Given;

height of fall, h = d m

time of fall, t = t s

initial velocity of the object, u = 0 m/d

The height of fall of the object is calculated from the kinematic equation below;

[tex]h = ut + \frac{1}{2} gt^2\\\\h = 0 + \frac{1}{2} gt^2\\\\h = \frac{1}{2} gt^2\\\\2h = gt^2\\\\g = \frac{2h}{t^2}[/tex]

where;

g is acceleration due to gravity, which is constant

if the time of fall is doubled, the height of fall is calculated as;

[tex]\frac{2h_1}{t_1^2} = \frac{2h_2}{t_2^2} \\\\\frac{h_1}{t_1^2} = \frac{h_2}{t_2^2}\\\\(Note: h_1 = d, \ and \ t_1 = t)\\\\h_2 = \frac{h_1t_2^2}{t_1^2} \\\\h_2 = \frac{(d)(2t_1)^2}{t_1^2} \\\\h_2 = \frac{(d)(2t)^2}{t^2}\\\\h_2 = \frac{(d)\times 4t^2}{t^2}\\\\h_2 = 4d[/tex]

Therefore, when the time of fall is doubled, the height of fall will be quadrupled

Answer:

F1 = 16 N and F2 = 24 N

Explanation:

Formula used => F = m×a and v-u= at

So, as we know force = mass × acc.

so acc. of first block = <math> F1/5 </math>. and acc. of second block = <math> F2/ 8 </math>.......... so as v-u= at.. now

Here u= 0 as the objects are placed at rest initially..

thus, v= at

FOR 1ST BLOCK

16= <math> F1/5 </math> × 5 ==> F1 = 16 N

FOR 2ND BLOCK

15= <math> F2/ 8 </math> × 5 ==> F2= 24 N

Answer:

F = 12 N

Explanation:

Given that,

Force of 5 N and 7 N respectively act on an object.

We need to find the resultant of the two vectors be at a maximum.

Force will be maximum when two forces acts in same direction. It means we can simply add them i.e.

F = 5 N + 7 N

F = 12 N

Hence, the resultant force is 12N.

Answer:

Answer:

yo mama

Explanation:

Answer:

The longer the length of string, the farther the pendulum falls; and therefore, the longer the period, or back and forth swing of the pendulum. The greater the amplitude, or angle, the farther the pendulum falls; and therefore, the longer the period.

Explanation:

Answer:

The radius of the curve is 9,183.67 m.

Explanation:

Given;

velocity of the jet plane, v = 600 m/s

acceleration of the jet plane, a = 4g = 4 x 9.8 m/s² = 39.2 m/s²

The radius of the curve is calculated from centripetal acceleration formula as given below;

[tex]a = \frac{v^2}{r} \\\\r = \frac{v^2}{a} \\\\r = \frac{600^2}{39.2} \\\\r = 9,183.67 \ m[/tex]

Therefore, the radius of the curve is 9,183.67 m.

Answer:

B.dunes

Explanation:

sand dunes are created by wind

The landform which is formed from the destructive and constructive processes of wind forces is dunes. Hence, option B is correct.

An anthropogenic or natural land feature on the solid surface of the Earth or another planetary body is referred to as a landform. A given terrain is made up of several landforms, and topography refers to how these landforms are arranged in the surrounding area. In addition to shoreline characteristics like bays, peninsulas, and seas, landforms also include hills, mountains, canyons, and valleys. Submerged structures like volcanoes, mid-ocean ridges, and major ocean basins are also considered to be landforms.

Physical characteristics of landforms, such as height, slope, orientation, stratification, rock exposure, and soil type, are used to classify them. Intuitive elements like berms, mounds, hills, ridges, cliffs, valleys, rivers, peninsulas, volcanoes, and many more structural and size-scale elements, including different types of inland and marine waterbodies and sub-surface features, are all examples of gross physical features or landforms.

The landform made of wind are :

The erosional landform madeup of wind is Mushroom rock, zeugen, demoselles, yardang etc.

To get more information about landforms:

https://brainly.com/question/17824484

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Answer:

Option d (108,000 J) is the correct answer.

Explanation:

The given values are:

Power,

P = 120 Watts

Time,

t = 15 min.

i.e.,

 = 900 sec

As we know,

⇒ [tex]P=\frac{W}{t}[/tex]

So,

⇒ [tex]W=P\times t[/tex]

On substituting the given values, we get

⇒      [tex]=120\times 900[/tex]

⇒      [tex]=108,000 \ J[/tex]

Answer:

They affect by switch by the conductors

Explanation:

sana makatulong

Answer:

Position A/Position E

[tex]K = E[/tex], [tex]U = 0[/tex]

Position B/Position D

[tex]K = (1-x)\cdot E[/tex], [tex]U = x\cdot E[/tex], for [tex]0 < x < 1[/tex]

Position C

[tex]K = 0[/tex], [tex]U = E[/tex]

Explanation:

Let suppose that ball-Earth system represents a conservative system. By Principle of Energy Conservation, total energy ([tex]E[/tex]) is the sum of gravitational potential energy ([tex]U[/tex]) and translational kinetic energy ([tex]K[/tex]), all measured in joules. In addition, gravitational potential energy is directly proportional to height ([tex]h[/tex]) and translational kinetic energy is directly proportional to the square of velocity.

Besides, gravitational potential energy is increased at the expense of translational kinetric energy. Then, relative amounts at each position are described below:

Position A/Position E

[tex]K = E[/tex], [tex]U = 0[/tex]

Position B/Position D

[tex]K = (1-x)\cdot E[/tex], [tex]U = x\cdot E[/tex], for [tex]0 < x < 1[/tex]

Position C

[tex]K = 0[/tex], [tex]U = E[/tex]

first one is negative

second is none

third is posotive

last one is negative

left to right order

Answer:

Explanation:

thats the answer