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Answer:

15 protons.

Explanation:

The atomic number is the number of electrons as well as the number of protons whereas, the atomic mass is the number of neutrons and number of protons.

Answer:

15 protons

Explanation:

because the atom's electrons is always the same number as the atom's protons

hope it helps

HAPPY HALLOWEEN

Have a nice day

Answer:

I believe it's called a diatomic atom

Answer: Hello, The velocity of the ball is 0.92 m/s in the downward direction (-0.92 m/s).

Explanation: The equation for the velocity of an object thrown upward is the following:

v = v0 + g · t

Where:

v = velocity of the ball.

v0 = initial velocity.

g = acceleration due to gravity (-9.8 m/s² considering the upward direction as positive).

t = time.

To find the velocity of the ball at t = 0.40 s, we have to replace "t" by 0.40 s in the equation:

v = v0 + g · t

v = 3.0 m/s - 9.8 m/s² · 0.40 s

v = -0.92 m/s

The velocity of the ball is 0.92 m/s in the downward direction (-0.92 m/s).

Hope That Helps

Answer:

b

Explanation:

proton and electron are exactly the same size but opposite

Answer: sum of the electric field energy density and magnetic field energy density.

Explanation:

The total energy stored in an electromagnetic wave is equal to the sum of energy stored in the electric and magnetic fields. In that case, the energy stored per unit volume, or energy density of the electromagnetic wave, is the sum of the electric field energy density and magnetic field energy density.

Answer:

Explanation:

These ground breaking women have achieved something no woman has achieved before. 1938: Babe Zaharias, the first female to play on the PGA Tour in the Los Angeles Open. She shot 81-84 and missed the cut.

Answer:

No,unless the force is balanced and the object doesn't move .

Answer:

20m/s final velocity, 60meters is the distance

Explanation:

since it accelerates 4m/s we can assume every second it goes up by 4 so we do 5×4=20...

while for the distance we have to think about the fact that every second the speed changes (precisely every second adding 4m/s) so in the first second its going to travel 4 meters in the second 8m in the third 12m in the fourth 16m and in the fifth 20m... so we just calculate them for addition and get 60 meters

Answer:

You just double the number of boxes it goes higher. Then triple the number for the second question. But don't change the time.

Answer:

Broadcasting empty threats is unwise

Explanation:

Roosevelt states that a man who boasts without backing himself up puts his position in jeopardy

Answer:

80m/s

Explanation:

[tex](acceleration)= \frac{(change \: in \: velocity)}{(change \: in \: time)}[/tex]

4 = v/20

V = 4 * 20

V = 80( final velocity)

Answer:

I will answer before the bot in comments

Answer:

i think its a 800x² hope you like it

Answer:

8964

Explanation:

465

Answer:

997 kg/m³

Explanation:

Answer:

997 kg/m³

Explanation:

Hello!

This is an example of an inelastic collision, where the two objects "stick" to each other after their collision. (The Goalkeeper CATCHES the puck).

We can write out the conservation of momentum formula:

m1vi + m2vi = m1vf + m2vf

Let:

m1 = mass of puck

m2 = mass of the goalkeeper

We know that the initial velocity of the goalkeeper is 0, so:

m1vi + m2(0) = m1vf + m2vf

m1vi = m1vf + m2vf

The final velocities will be the same, so:

m1vi = (m1 + m2)vf

Plug in the given values:

(0.16)(40)/ (0.16 + 120) = vf ≈ 0.0533 m/s

Using the equation for momentum:

p = mv

The object with the LARGER mass will have the greater momentum. Thus, the Goalkeeper has the largest momentum as p = mv; a greater mass correlates to a greater momentum since the velocity is the same between the two objects. The puck would have a momentum of p = (.16)(0.0533) = 0.008528 kgm/s, whereas the goalkeeper would have a momentum of

p =  (120)(0.0533) = 6.396 kgm/s.

Answer:

1 hour = 3,600 seconds

1 km = 1,000 meters

75 km/hour = (75,000/3,600) m/s =  20-5/6 m/s

The average speed of the bus while it slows down is

                                   (1/2)(20-5/6 + 0) = 10-5/12 m/s .

Traveling at an average of 10-5/12 m/s for 21 seconds,

the bus covers

                         (10-5/12) x (21) =  218.75 meters .

do not own the answer

answer by (AL2006 from brainly)

Hi there!

We know that:

Potential energy = mgh, where:

m = mass

g = acceleration due to gravity

h = height

We know that ΔPE = mgΔh = 1.47 kJ, so:

1.47kJ = mgΔh

Remember to convert kJ to J for simplicity: (1 kJ = 1000J)

1470J = mgΔh

Rearrange to solve for Δh:

1470/mg = Δh

1470/(60 · 9.8) = 2.5m

Answer:

f=mass × acceleration

f=10×275

f=2750N

Explanation:

PLS MARK BRAINLIEST

These are known as dwarf planets.

Answer: goin at a constant rate

Explanation: goes through 0,0

Answer:

The Celestial Sphere

Explanation:

No matter where you are on Earth, stars appear to rotate about a point called the celestial pole.

Here's how it works:

Rotation of Earth: The Earth rotates on its axis from west to east. This rotation takes approximately 24 hours to complete one full rotation.

Celestial Poles: The celestial poles are imaginary points in the sky directly above the Earth's geographic poles. The North Celestial Pole is located directly above the Earth's North Pole, and the South Celestial Pole is located directly above the Earth's South Pole.

Apparent Motion: As the Earth rotates, the stars that are closer to the celestial poles appear to move in small circles around these poles. The stars that are farther away from the poles will have larger apparent circles.

Constellations and Circumpolar Stars: The constellations located near the celestial poles are known as circumpolar constellations. This means that they never fully set below the horizon from a specific location on Earth.

Equator and Horizon: The stars that are situated near the celestial equator (an imaginary line that's an extension of Earth's equator into the sky) will rise in the east, arc across the sky, and set in the west, much like the Sun does.

To know more about celestial pole:

https://brainly.com/question/30418300

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Answer:

kettle boiling is an example of pressure in physics

Answer:

Red I'm pretty sure

Explanation:

Vocanic ash and sunsets. Volcanic eruptions can inject millions of tonnes of dust and gaseous sulfur dioxide into the stratosphere. ... The dust and aerosol produce vivid sunset and twilight effects like the intense yellow-red horizon and purple-pink glows of the photograph.

The sky is a Dark Black.

Explanation:

The smoke from the volcano fills the sky with black smoke

Answer:

A. an echo works similarly with an ultrasound scanner cos they both refract sound

Explanation:

hope it helps

Answer:

A. Echo

Explanation:

I took the quiz and got it right

1c 2c 3a 4a 5d

Explanation:

I just know.

ur welcome.

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Answer:

Slope y2-y1/x2-x1

m=mass/volume

slope represents density(g/ml)

Explanation:

PLS MARK BRAINLIEST

Slope = Mass/ Volume = Density. The given slope represents Density.

Thus, Density is the mass of a material substance per unit volume. d = M/V, where d is density, M is mass, and V is volume, is the formula for density.

Grams per cubic centimeter are a typical unit of measurement for density.  For instance, air weighs 1.2 pounds per cubic metre. In textbooks and manuals, the densities of typical solids, liquids, and gases are stated.

The volume of a body is equal to the mass multiplied by the density (M = Vd), while the volume is equal to the mass divided by the density (V = M/d). Density provides a straightforward way to determine a body's mass from its volume, or vice versa.

Thus, Slope = Mass/ Volume = Density. The given slope represents Density.

Learn more about Density, refer to the link:

https://brainly.com/question/29775886

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