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3 years ago

As a roller coaster goes downhill

Physics

2 answers:

Anna35 [415]3 years ago

6 0

Answer:

potential energy is converted into kinetic energy. Potential is stored energy, where kinetic is moving energy.

Explanation:

Klio2033 [76]3 years ago

5 0

Kinetic and Potential energy sort of fight with each other as a roller coaster moves. As it rolls downhill, it loses potential energy because it's getting closer to the ground, but gains kinetic energy because it begins to move faster

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Two steamrollers begin 105 mm apart and head toward each other, each at a constant speed of 1.20 m/s. At the same instant, a fly

levacccp [35]

Answer: 109.4 mm

Explanation: Distance is a scalar quantity and it is the measure of how much path there are between two locations. It can be calculated as the product of velocity and time: d = vt

The separation between the two steamrollers is 105 mm or 0.105 m. They collide to each other at the middle of the separation:

location of collision = $\frac{0.105}{2}$ = 0.0525 m

To reach that point, both steamrollers will have spent

$v=\frac{\Delta x}{t}$

$t=\frac{\Delta x}{v}$

$t=\frac{0.0525}{1.2}$

t = 0.04375 s

The fly is travelling with speed of 2.5 m/s. So, at t = 0.04375 s:

d = 2.5*0.04375

d = 0.109375 m

Until it is crushed, the fly will have traveled 109.4 mm.

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3 years ago

A gamma ray is pure __________. <img src="https://tex.z-dn.net/?f=%20u%5C%5C%20r%5C%5C%20cursed%5C%5C%20my%5C%5C

ivanzaharov [21]

A gamma ray is pure energy

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3 years ago

Why does a curve on a distance-time graph indicate acceleration? an increasing amount of time passes for each unit of distance a

elena55 [62]

because speed can change overtime for a car, and isn't always constant.

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3 years ago

Read 2 more answers

Fire spreading from a wall to a nearby couch due to radiant heat transfer is an example of: Select one:

Mrac [35]

Fire spreading from a wall to a nearby couch due to radiant heat transfer is an example of heat reflectivity.

<h3>What is heat reflectivity?</h3>

When sunlight and other light sources strike a material's surface, its reflectance is measured. This number can be used to characterize a surface's characteristics in terms of surface finish. Another name for reflection is reflectivity.

This is a measurement of the amount of energy that material reflects at a specific wavelength. A value between 0 and 1 can also be used to represent reflectivity (or a percentage between 0 and 100).

Sigma and other top businesses have created a range of other forms of heat reflective fabric in the 50 years after the creation of space blankets, including Fabric and aluminum foil laminates, fabric laminates with metalized thin films.

Learn more about heat reflectivity here:

brainly.com/question/26105866

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2 years ago

A solenoid of length 2.40 m and radius 1.70 cm carries a current of 0.190 A. Determine the magnitude of the magnetic field insid

Jlenok [28]

Complete question:

A solenoid of length 2.40 m and radius 1.70 cm carries a current of 0.190 A. Determine the magnitude of the magnetic field inside if the solenoid consists of 2100 turns of wire.

Answer:

The magnitude of the magnetic field inside the solenoid is 2.089 x 10⁻⁴ T.

Explanation:

Given;

length of solenoid, L = 2.4 m

radius of solenoid, R = 1.7 cm = 0.017 m

current in the solenoid, I = 0.19 A

number of turns of the solenoid, N = 2100 turns

The magnitude of the magnetic field inside the solenoid is given by;

B = μnI

Where;

μ is permeability of free space = 4π x 10⁻⁷ m/A

n is number of turns per length = N/L

I is current in the solenoid

B = μnI = μ(N/L)I

B = 4π x 10⁻⁷(2100 / 2.4)0.19

B = 4π x 10⁻⁷ (875) 0.19

B = 2.089 x 10⁻⁴ T

Therefore, the magnitude of the magnetic field inside the solenoid is 2.089 x 10⁻⁴ T.

3 0

3 years ago