help please I have to turn this in tonight!!
An atom has an equal number of neutrons and electrons. True or false​

Answer:

11760

Explanation:

m= 20kg

d= 60 m

work done = force .distance= 20*9.8*60= 11760Nm

Answer:

D

Explanation:

I just did it on a p e x

Answer:

D

Explanation:

Answer:

Heat capacity or thermal capacity is a physical property of matter, defined as the amount of heat to be supplied to a given mass of a material to produce a unit change in its temperature. The SI unit of heat capacity is joule per kelvin. Heat capacity is an extensive property

Answer:

   v = 4.0 10⁴ Hz

Explanation:

The bat emits sound in the air, so we can use the speed of sound in air

          v = 344 m / s

also the expression that relates the wavelength and frequency with the speed of the wave

          v = λ f

          f = v / λ

let's calculate

          v = 344/0.0085

          v = 4.0 10⁴ Hz

HI thts way tooo much to answer but ye...d;

Answer:

7.5secs

Explanation:

Using the equation of motion

v = u + at

v is the final velocity = 0m/s

u is the initial velocity = 9m/s

a is the deceleration = -1.2m/s²

t is the required time

Substitute;

0 = 9 + 1.2(t)

-9 = -1.2t

t = -9/-1.2

t = 7.5secs

hence it takes the child 7.5secs to stop

Answer:

i think that says 4800

its the same as the number at the bottom

Answer:

The woman's force was directed 59.22⁰ to the horizontal.

Explanation:

Given;

work done by the woman, W = 236 J

distance through the load was moved, d = 24.4 m

applied force, F = 18.9 N

inclination of the force, = θ

The work done by the woman is calculated as;

W = Fdcosθ

[tex]cos \ \theta = \frac{W}{Fd} \\\\cos \ \theta = \frac{236 }{18.9 \times 24.4} \\\\cos \ \theta = 0.5118\\\\\theta = cos^{-1} ( 0.5118)\\\\\theta =59.22^0[/tex]

Therefore, the woman's force was directed 59.22⁰ to the horizontal.

Answer:

 59.22⁰

Explanation:

Answer:

If you are simply looking for the X component then the most applicable formula from the choices given is Tx + Ux+ Vx. This means that you will add all x-components. For example: If a man walking along the x-axis walks 10 meters to the right, 5 back and 2 meters forward, what is the resultant vector?

Answer:

C. Sports activity

Explanation:

A sport activity is a form of competitive physical activity in forms of games. They are normally organized for individuals to participate  with the aim of improving physical abilities and skills, bring enjoyment to participants and act as a form of entertainment.

Answer:

Combustion

Explanation:

Answer:true

Explanation:

Answer:

A earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves

gravity does help the ball since gravity pulls down objects, it causes more friction on the ball therefore causing the ball to slow down faster.

Answer: Hello there

Explanation:

The colored part of the eye which helps regulate the amount of light entering the eye. When there is bright light, the iris closes the pupil to let in less light. And when there is low light, the iris opens up the pupil to let in more light. Focuses light rays onto the retina.

Answer:10 N

Explanation:

Subtract them and u will see it will be 10n so the net force will be 10 n why you should subtract them is because

They both are different amounts

Different forced of strength

Different N numbers

Think of it like the is an unequal amount of student so one side has 2 students and the other side has 4 students

Answer:

because the rod takes electrons from the fur when rubbed across it

Answer:

125.5J

Explanation:

Given parameters:

Mass of the bowling ball  = 6.1kg

Height of lifting  = 2.1m

Unknown:

Increase in the ball energy  = ?

Solution:

The ball has changed position by moving it from one point to another. So, it has acquired more potential energy.

 Potential energy  = mgh

     m is the mass

     g is the gravity  

     h is the height

Now insert the given parameters and solve;

       Potential energy  = 6.1 x 9.8 x 2.1  = 125.5J

Answer:

800

Explanation:

bc if you times by ten

Answer:

the correct answer is false

Answer:

As a rule sound travels slowest through gases, faster through liquids, and fastest through solids. The speed of light as it travels through air and space is much faster than that of sound; it travels at 300 million meters per second or 273,400 miles per hour. ... Speed of light in glass = 200 million m/s or 182,300 mph.

Explanation:

Almost always sound travels slowest via gases, faster via beverages, and fastest via solids. The velocity of light because it travels via air and area is a great deal quicker than that of sound; it travels at 300 million meters consistent with 2d or 273,400 miles in step with hour.

The pace of light in glass = 2 hundred million m/s or 182, 300 mph.

Mild waves are electromagnetic waves whilst sound waves are mechanical waves. Mild waves are transverse even as sound waves are longitudinal. Light waves can tour in a vacuum. Sound waves require a material medium to journey, and as a result, can not travel in a vacuum.

Nothing can travel faster than light except for sound. This is the declaration of a few US physicists, who say they've designed an unusual waveguide to make the sound move at “superluminal” speeds (Appl. Phys.

In 2015, a team of Scottish scientists announced that they had found a way to gradual the rate of mild. By sending photons via a unique mask, the researchers altered their shape. In this malformed kingdom, these infinitesimal particles of light traveled slower than normal photons.

Learn more about the speed and sound wave of light waves here: https://brainly.com/question/2142871

#SPJ2

Answer:

In mY Knowledge

Energy transfer is the movement of energy from one location to another. Energy transformation is when energy changes from one type to another. While energy can be transferred or transformed, the total energy always remains the same.

Hope iT HeLps :D

Answer:

You can tell if energy has been transferred when something works when you put a body of energy in it. For example, you'll know when energy is transferred if you plug a lamp cord into an electric socket and the lamp turns on. Energy is being transferred from the socket to the lamp.  

You can tell when energy is being transformed when it changes from one energy to another. You can know when energy is being transformed when you turn on a stove. Chemical energy transforms into electric energy.

I hope that helps!

If it is correct, may I be brainliest?

Answer:

Peters image will grow bigger

Explanation:

In this situation, only Peter is at rest and the mirror is in motion at 1.5m/s heading towards Peter.

From afar, Peter will look small in the mirror that is his image will be small When the mirror is moved at 1.5m/s Peter being the observer will notice that his image grows bigger and bigger.

The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them. This means that the force of gravity increases with mass, but decreases with increasing distance between objects.

Answer : H20

Explanation:

Answer:

w=f×d

=120×5

=600 j...........

Answer:

The Moon is at the closest part of its orbit around Earth; the Sun and the Moon form a straight line with Earth.

Explanation:

The conclusion the captain could draw accurately is that;

The moon is probably at the closest part of its orbit moving round the earth. In addition, that the sun and the moon have formed a straight line with earth. This is due to the fact that high tides are higher and low tides are lower at a particular time each year.

Answer:

“brilliant, radiant, splendid”.

Explanation: