All categories

3 years ago

8th grade science question on forces, please help me im soooo close and i dont understand this one :)

Physics

2 answers:

marin [14]3 years ago

7 0

Answer: The dog is pull the stick away from the boys hand

the boy is also pulling if the boy lets go of the stick the dog will fall due to law of action and reaction

The man is pushing the horse cart up the hill to do so he has to apply force

Explanation:

Lady_Fox [76]3 years ago

7 0

Answer:

The stick is being pulled to the right by the dog, but that force is being counter-acted by the boy, who is pulling the stick to the left.

The wagon is being pulled to the right by the horses, and the man is also pushing the cart, applying force to make it go right.

You might be interested in

A car moved 120km to the north. what is its displacement?

inn [45]

120Km. They are the same

5 0

3 years ago

A photon detector captures a photon with an energy of 4.29 ✕ 10−19 J. What is the wavelength, in nanometers, of the photon?

serious [3.7K]

Answer : The wavelength of photon is, $4.63\times 10^{2}nm$

Explanation : Given,

Energy of photon = $4.29\times 10^{-19}J$

Formula used :

$E=h\times \nu$

As, $\nu=\frac{c}{\lambda}$

So, $E=h\times \frac{c}{\lambda}$

where,

$\nu$ = frequency of photon

h = Planck's constant = $6.626\times 10^{-34}Js$

$\lambda$ = wavelength of photon = ?

c = speed of light = $3\times 10^8m/s$

Now put all the given values in the above formula, we get:

$4.29\times 10^{-19}J=(6.626\times 10^{-34}Js)\times \frac{(3\times 10^{8}m/s)}{\lambda}$

$\lambda=4.63\times 10^{-7}m=4.63\times 10^{-7}\times 10^9nm=4.63\times 10^{2}nm$

Conversion used : $1nm=10^{-9}m$

Therefore, the wavelength of photon is, $4.63\times 10^{2}nm$

6 0

3 years ago

PLEASE HELP FAST!!!

ELEN [110]

Answer:

1.It improved by using the Mars survey probe, that took a portrait of the planet that helped us see the climate of Mars.

Explanation:

I watched the video.

7 0

3 years ago

A pendulum is observed to complete 20 full cycles in 60 seconds. Determine the period and the frequency of the pendulum.

Delvig [45]

i hope i have been useful buddy.

good luck ♥️♥️

5 0

3 years ago

Read 2 more answers

I need help with the circled one

Whitepunk [10]

Yes the answer is yes

7 0

3 years ago