Can someone help please I will give brainliest

A jogger runs at a constant rate of 10.0 m every 2.0 seconds. The jogger starts at the origin and runs in the positive direction

Elis [28]

Answer:

(a) 25 m

(b) 75 m

Explanation:

Given that the jogger runs at a constant rate of 10.0 m every 2.0 seconds.

So, the speed of the jogger,

$v=\frac{10}{2}=5m/s\;\cdots(i)$

Let d be the distance covered by him in time, t s.

As distance=(speed) x (time)

So, $d=vt$

From equation (i)

$\Rightarrow d=5t\;\cdots(ii)$

As the jogger starts from origin, so, the distance, $d$ , also represents the position of the jogger at the time $t$ s.

The position-time graph has been shown.

(a) From equation (ii), for t=5.0 s

$d=5\times 5=25 m$

So, the jogger is at a distance of 25 m from the origin.

(b) Similarly, for t=15.0 s

$d=5\times 15=75 m$

So, the jogger is at a distance of 75 m from the origin.

8 0

3 years ago

What's the relationship between magnetism and birds?

neonofarm [45]

Answer:

can detect axis of magnetic field

Explanation:

3 0

2 years ago

Read 2 more answers

Assuming that each nucleus is roughlyspherical and that its mass is roughly equal to A (in atomic mass units {\rm u}), what is t

lara [203]

Answer:

ρ/ρ2 = 3 / R₀ the two densities are different

Explanation:

Density is defined as

ρ = M / V

As the nucleus is spherical

V = 4/3 π r³

Let's replace

ρ = A / (4/3 π R₀³)

ρ = ¾ A / π R₀³

b)

ρ2 = F / area

The area of a sphere is

A = 4π R₀²

ρ2 = F / 4π R₀²

Atomic number is the number of protons in the nucleon in not very heavy nuclei. This number is equal to the number of neutrons, but changes in heavier nuclei, there are more neutrons than protons.

Let's look for the relationship of the two densities

ρ/ρ2 = ¾ A / π R₀³ / (F / 4π R₀²)

ρ /ρ2 = 3 (A / F) (1 / R₀)

In this case it does not say that the nucleon number is A (F = A), the relationship is

ρ/ρ2 = 3 / R₀

I see that the two densities are different

3 0

3 years ago

Pour chacune des réactions chimiques

Doss [256]

Answer: Me non espanol

Explanation:

4 0

2 years ago

Which of the below is an example of mimicry that enables prey species avoid predation?

Marta_Voda [28]

b..a harmless organism imitating the look of a harmful organism

Explanation:

A harmless organism imitating the look of a harmful organism is one example of mimicry that enables prey species avoid predation.

Prey are smaller and less harmful organisms often hunted by larger organisms usually carnivores.

Mimicry is a form of evolutionary adaptation process in which two organisms of the same specie or different species tends to look alike.

It is a subtle defense mechanism developed by organism over an extended period of time.

learn more:

Adaptation brainly.com/question/11105547

#learnwithBrainly

6 0

3 years ago