Rock X is released from rest at the top of a cliff is on earth. A short time later, Rock y is released from rest from the same point as rock X. Both rocks fall for several seconds before landing on the ground directly below the cliff. Frictional forces are considered to be negligible. Which of the following graph correctly shows the vertical velocity of rock X as a function of time? Take the positive direction to the upward.​

Answer: tug vi

Explanation:

Because

Answer:

[tex]average power = 416.67 \: W

[/tex]

Explanation:

[tex]are \: you \: sure \: this \: is \: a \: man \: or \: robot?......haha. \\ the \: average \: power \: is \: given \: by : \\ p_{(a.v)} = \frac{w}{t} \: but \: work \: or \: energy \: expanded \: is \: given \: by : \\ w = \: fs = mgs \: \: therfore, \: p_{(a.v)} = \frac{mgs}{t} \\ note \: the \: followng : \\ p_{(a.v)} = average \: power, \\ w = work \: done \: or \: energy \: expanded, \\ f = force \: due \: to \: gravity \: = weight = mg, \\ s = distance = height = 2m \times 25 \: lifts, \: m = mass = 50kg, \\ \: g \: = \: acceleration \: due \: to \: gavity = 10 {m(s)}^{ - 2} and \: t = time = 60s.

\\ so \: what \: now, ok \: lets \: find \: p_{(a.v)} . \\ p_{(a.v)} = \frac{mgs}{t}= \frac{50 \times 10 \times 50}{60} = 416.66666667 \: watts.[/tex]

Answer:

15.34 i think

Explanation:

Answer: 3- Large cells of rising and sinking gasses

Explanation: Hotter gas coming from the radiative zone expands and rises through the convective zone. It can do this because the convective zone is cooler than the radiative zone and therefore less dense. As the gas rises, it cools and begins to sink again. As it falls down to the top of the radiative zone, it heats up and starts to rise. This process repeats, creating convection currents and the visual effect of boiling on the Sun's surface.

Answer:

The candy before was fluffy, and the candy after was compacted.

Explanation:

By definition, something that is fluffy is something very soft, and when you talk about fluffy food (e.g. cakes, cotton candy) it is food that has a lot of air in it. In this case, the cotton candy originally had the shape of a cloud and was not dense, therefore, it was fluffy.

Something that is compact, it something that is dense, solid and generally small. Since Chanel wanted her cotton candy to be more dense, she compacted it .

Answer:

c

Explanation:

Answer:neutron

Explanation:

Because it is similar to the motor neurons

Answer:

Proton

Explanation:

Proton therapy, also called proton beam therapy, is a type of radiation therapy. It uses protons rather than x-rays to treat cancer. A proton is a positively charged particle. At high energy, protons can destroy cancer cells.

Answer:

engeenering

Explanation:

how you design or do something with tools or with hand

Answer:

In space noone can hear you scream.....

Explanation:

There is no sound in space. Sound, like light or heat, is a wave. However, one major distinction is that, unlike light or heat (radiation), sound needs a medium to travel. Sounds require the presence of molecules or particles to travel from one region to another.

Answer:

Gold

Silver

Mixture

Explanation:

Density

The density of an object of mass m and volume V is given by:

[tex]\displaystyle d=\frac{m}{V}[/tex]

We are given the following densities:

Gold: 19.3 gr/cm3

Silver: 10.5 gr/cm3

With the data provided in the table, we can confirm which of the three columns corresponds to gold, silver, or a mix of both.

Calculating the first density: m1=1,930 gr, V1=100 cm3

[tex]\displaystyle d1=\frac{m1}{V1}[/tex]

[tex]\displaystyle d1=\frac{1,930}{100}[/tex]

[tex]d1=19.3\ gr/cm^3[/tex]

This crown is made of gold

Calculating the second density: m2=1,930 gr, V2=184 cm3

[tex]\displaystyle d2=\frac{m2}{V2}[/tex]

[tex]\displaystyle d2=\frac{1,930}{184}[/tex]

[tex]d2\approx 10.5\ gr/cm3[/tex]

This crown is made of silver

Calculating the last density: m3=1,930 gr, V3=150 cm3

[tex]\displaystyle d3=\frac{m3}{V3}[/tex]

[tex]\displaystyle d3=\frac{1,930}{150}[/tex]

[tex]d3\approx 12.9 gr/cm^3[/tex]

Since the value of the density is between gold and silver, this crown is a mixture.

Answer:

its basically on where u live is more hot or cold. Is rain and snow common or uncommon. where is this. is it easier to live or harder to live wherever u live at. list 12 different organisms in the place u live. and one fun fact its basically about what u see where u in the city u live

Answer:

3000

Explanation:

The group benefits that transmitted by electromagnetic waves over cable networks should be option C.

It is the waves that are developed since a result of vibrations lies between an electric field and a magnetic field. It is comprised of oscillating magnetic and electric fields. Here the waves should be transmitted over the cable networks should be benefited when the people live close to their cell phones.

Learn more about network here: https://brainly.com/question/14464626

Answer:

Its People who live far from a transmitting antenna

Explanation: I did the quiz

Answer:

19.1 m, 52.0°

Explanation:

Given:

v₀ₓ = 0 m/s

v₀ᵧ = 2.88 m/s

vᵧ = 0 m/s

aₓ = 0.350 m/s² cos(-52.0°) ≈ 0.215 m/s²

aᵧ = 0.350 m/s² sin(-52.0°) ≈ -0.276 m/s²

Find: Δx and Δy

First, find time.

vᵧ = aᵧt + v₀ᵧ

0 m/s = (-0.276 m/s²) t + 2.88 m/s

t = 10.4 s

Now find the displacement components Δx and Δy.

Δx = v₀ₓ t + ½ aₓ t²

Δx = (0 m/s) (10.4 s) + ½ (0.215 m/s²) (10.4 s)²

Δx = 11.7 m

Δy = v₀ᵧ t + ½ aᵧ t²

Δy = (2.88 m/s) (10.4 s) + ½ (-0.276 m/s²) (10.4 s)²

Δy = 15.0 m

The magnitude of the displacement is:

d² = Δx² + Δy²

d² = (11.7 m)² + (15.0 m)²

d = 19.1 m

The direction of the displacement is:

θ = atan(Δy / Δx)

θ = atan(15.0 m / 11.7 m)

θ = 52.0°

Answer:

D

Explanation:

The table is NOT in motion, so it will remain still. Newton's second law states that for every action, there's an equal and opposite reaction. Therefore, the table must push back the opposite direction(up) with the same force(15N)

Answer:

I=24,000 Amp

Explanation:

Electric Current

Is a measure of the quantity of charge Q flowing by a point in a time period of t.

The standard metric unit for the current is the Ampere, often abbreviated as Amps or A.

It can be calculated as:

[tex]\displaystyle I=\frac{Q}{t}[/tex]

The cloud generates a lightning strike that releases a charge Q=0.84 C during a time [tex]t=3.5\cdot 10^{-5}\ sec[/tex].

The current is of course, not of a constant value, but an average value can be calculated by using the above formula:

[tex]\displaystyle I=\frac{0.84}{3.5\cdot 10^{-5}}[/tex]

[tex]\boxed{I=24,000\ Amp}[/tex]

Answer:

Equitable education in a healthy democracy includes science and engineering learning for every student. Great science and engineering education engage student so that they develop the knowledge and intellectual dispositions to make sense of the natural and designed worlds.

Explanation:

Distance travelled will be = 63 m

These are the equations that describe the behavior of a physical system in terms of its motion as a function of time .

Given : u = 24 m/s

           v= 18 m/s

           t = 3sec

using equation of motion : v = u + at

                         18 = 24 + a*3

                         -6 = 3a

                          a = -2 m/s^2

using equation of motion : s =  u t + 1/2 a (t^2)

                           s = 24 * 3 + 1/2 * (-2)(9)

                          s = 63 m

Learn more about equation of motion:

https://brainly.com/question/16355111?referrer=searchResults

#SPJ2

Answer:

yes there are a lot of boys on this platform

Answer:

60 Amperes

Explanation:

current is the main factor, so current is measured in Amperes

Answer:

Soln:

d=30m

t=3s

now:

v=d/t

=30/3

=10

Answer: 39.2 m/s

Explanation:

You can use the kinematic equation:

[tex]v_f^2=v_i^2+2a*d[/tex]

We know the final velocity because it says it came to a stop. So now all we gotta do is plug in.

[tex]0^2=v_i^2+2(-10)(76.7)\\v_i^2=1,534\\v_i=\sqrt{1534} \\=39.166 m/s[/tex]

Answer:

The independent variable is the variable that is changing.

Explanation:

I gave you this because you did not give us the work for use to see.

Answer:

Explanation:

Givens:

v = 15 m/s

t = 5 seconds

d = ??

Formula

d = v*t

Solution

d = 15 * 5

d = 75 m

Answer:

6180

Explanation:

if he is riding at 10.3 meters per second, and is riding for 10 minuets you multiply 10.3 by 60 for 1 minuet and get 618. Then multiply 618 by 10 for 10 minuets and you get 6180

Answer:

618 of 103

Explanation:

If you do 10.3 x 60 you will get 618

If you do 10.3 x 10 you will get 103

Answer:

number 2

Explanation:

Answer:

Acceleration decreases.

Explanation:

Hope this helps you.

Answer:

the SI unit of momentum is :- kg.ms-1

and we know that,

kinetic energy = 1/2 mv2

E=p2/2m

p=(2Em)1/2

so the derived units are (J.kg)1/2

Explanation:

Answer:

maybe. inv me to slides and I'll try.

Explanation: