How long does it take to reach the sun?

How is the position vs. time graph with the cart moving towards the sensor with decreasing speed different than the position vs.

IrinaVladis [17]

Answer:

if Y is the position and X the time: in the first one you will see a crescent function that starts sharp and starts to curve down as the time pases. as the cart is slowing down, you will need more time to move the same as before.

Y (position)

I

sensor-------------------------------------------------------------------

I o

I------------------------------------------------------------------------------------- X (time)

in the second case the cart starts close to the sensor and starts getting sharper and sharper as the time pases. This is because the velocity is increasing, so for each second that pases, you will travel more distance that the second before it.

Y (position)

I

sensor ----------------------

I o

I------------------------------------------------------------------------------------- X (time)

i hope you can understand it, kinda hard to do graphs here.

6 0

4 years ago

What is the maximum velocity (in m/s) of electrons ejected from a material by 85 nm photons, if they are bound to the material b

diamong [38]

The maximum velocity of electrons is v = 3.20 × 10¹⁵ m/s

The wavelength of photons λ = 85 nm

W = 4.66 ev

<h3>What is photoelectric effect and how velocity of photoelectrons is calculated?</h3>

The emission of electrons happened and absorbed through the electromagnetic radiation is said to be photoelectric effect.

Photoelectric cells, photodiodes works on the principle of photoelectric effect.

According to of photoelectric effect,

E = hν

Here, hc / λ = W + KE max

hc / λ = W + 1/2 mv² max

v² = sqrt of (( hc / λ - W) (2/m))

I cap denotes λ ,

substituting all the values,

v = sqrt of ( (6.623 × 10⁻³⁴ Js ) ( 3 × 10⁸ m/s) / (85 nm) - 4.66ev) (2/ 9.1× 10⁻³¹

v = sqrt of ((1.987800 × 10⁻²⁵ / 85 × 10 ⁹ ) - 4.66 ev ) ( 2.197 × 10³⁰)

v = sqrt of ((2.338588 × 10⁻³⁶) - 4.66 ev ) ( 2.197 × 10³⁰)3.2

v = 3.20 × 10¹⁵ m/s

Thus, the maximum velocity is calculated as v = 3.20 × 10¹⁵ m/s.

Learn more about photoelectric effect,

brainly.com/question/1895423

#SPJ4

4 0

2 years ago

Your town has decided to build a new power plant to replace the old coal burning plant. Suggest a renewable resource that they c

Gelneren [198K]

Hmm...
dam power plant (not sure if this is considered renewable): benefits: as it creates a tourist spot bringing more money and provides electricity.
disadvantages: restricts flow of water to farms, costs millions to build.
solar power plant: benefits: sunlight just keeps coming, produces a lot of electricity for maybe half the cost.
disadvantages: takes a large crew to maintain, mostly needs to be in an open area.
Wind farm: benefits: wind we don't have to worry about much, just blows through and turns the turbines, and can produce electricity almost 24/7.
disadvantages: unsightly, needs open space and costs a lot to build
Take your pick!

8 0

4 years ago

Read 2 more answers

Make a prediction based on your understanding of the cause-and-effect relationship between environment and trait: what happens w

Rom4ik [11]

Everything dies because it’s to extreme

4 0

3 years ago

Consider the circular motion of a positively charged particle in the plane of this paper, due to a constant magnetic field B~ wh

barxatty [35]

Answer:

the direction of the particle is anti clockwise.

Explanation:

We know that;

- It's a positive particle

- That it's moving in a circle in a magnetic field

- We know the direction of the magnetic field

We can deduce the direction of the magnetic force because it is moving in a circle.

So the force is pointing to the centre of the circle and that's what is keeping it in that circular motion.

Since we know the direction of the magnetic field and force, we can use right hand rule to figure out the direction of the particle since the particle is positive.

Using right hand rule, the thumb which is the particle is pointing anticlockwise. So the direction of the particle is anti clockwise.

3 0

3 years ago