A car moving on a straight level road changes its speed from Find its acceleration . (3 pts ) 3.5 m/s to 4.5 m/s in 5.00 seconds .

Answer:

the total mass of the objects multiplied by their velocity.

Answer:

kinetic mechanical energy

Answer:

Those sound waves are called kinetic mechanical energy

Explanation:

Sound energy is the result when a force, either sound or pressure, makes an object or substance vibrate. That energy moves through the substance in waves. Those sound waves are called kinetic mechanical energy.

B and D are both the same statement.

It's the correct one.

Answer:

Normal body temperature does not change much with aging. But as you get older, it becomes harder for your body to control its temperature. A decrease in the amount of fat below the skin makes it harder to stay warm.

Answer:

an oxidation reaction i think that's the answer

Explanation:

Explanation:

Rusting of iron refers to the formation of rust, a mixture of iron oxides, on the surface of iron objects or structures. This rust is formed from a redox reaction between oxygen and iron in an environment containing water.

Hope this helps!!

Have a blessed day <33

Answer:

Mass of the object or earth

Answer:

1250 for .4

125 for 4

Explanation:

[tex]p=\frac{m}{v}[/tex]

500/4 = 125

500/.4 = 1250

Answer:

I put friction and applied

Explanation:

Answer:

Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn)

Explanation:

hope this helps

Answer:

An element is a pure substance and is made of only one type of atom.

Explanation:

It cannot be broken down into a simpler substance.

Answer:

The result is that epicentres of earthquakes farther to the interior of the overriding plate will correspond to increasingly deep earthquakes.

Answer:

• Its acceleration is zero

Explanation:

from definition of acceleration:

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

• since velocity is constant, change in velocity is zero

[tex]{ \boxed{ \rm{ \delta \: (velocity) = 0}}}[/tex]

• therefore:

[tex]{ \rm{acceleration = \frac{0}{time} }} \\ \\ { \boxed{ \tt{acceleration = 0 \: m {s}^{ - 2} }}}[/tex]

Answer:

a = (v2 - v1) / t

a t = v2 - v1

v1 = v2 - a t

v1 = 28 m/s - 6 m/s^2 * 4 s = 4 m/s

Spiral galaxies are also known as twisted collection of stars and gas that have often beautiful shape and are made up of hot young stars.

There are various types of galaxies based on their shapes such as spiral, elliptical, oval etc. The spiral shaped galaxies are called spiral galaxies.

Galaxies are a groups of stars, dust and dark matter which are connected by the gravitational force. There are billions of galaxies in the universe and each containing trillions of stars. The galaxy nearest to earth is milky way.

The spiral structure that radiate from the galactic disc's core and give spiral galaxies their name. The central bulge, at the ends of which the spiral arms originate, is seen to have an additional component in the shape of a bar-like structure in about two-thirds of all spirals.

Nearly the course of the universe's history, the ratio of barred spirals to barless spirals has probably varied, going from only 10% approximately 8 billion years ago to about a quarter 2.5 billion years ago to over two-thirds of the galaxies in the observable universe at the present.

To find more about galaxies, refer the link below:

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When a substance has smaller specific heat it needs less heat to shows changes in it hence making the option D correct.

Answer:

option D) the red liquid has a smaller specific heat

Explanation:

Answer:

1. the graph is showing the speed of the object at different times.

Explanation:

2. the object is slowing down

Answer:

B

Explanation:

Answer:

- 0.5 m/s

Explanation:

(1) Acceleration = change in velocity / time

(2) Change in velocity = (Final velocity - Initial velocity)

We know:

acceleration = 1.5 m/s/s

time = 5 seconds

final velocity = 7 m/s

x = initial velocity)

1.5 = ( 7 - x ) / 5

1.5 x 5 = ( 7 - x )

7.5 = 7 - x

x = -0.5 m/s

You can check the answer by plugging in the values to equation (1).

Answer:

Explanation:

a.

b. R3= 1/2R2=6 ôm

R12= R1+R2=20 ôm

Rtđ=R12.R3/R12+R3= 4,62 ôm

c. U= I.Rtđ = 2.4,62=9,23 V

I1=I2= 9,23/20= 0,4615 A

I3= 2-0,4615=1,5385 A

Answer:

14 km away and a turn of 90°

Explanation:

brailiest pls pls pls

Answer:

Chemical changes occur when a substance combines with another to form

Explanation:

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.

The scaled diameters of the missing planets are listed below:

Mercury                      1.4 cm

Venus                        3.3 cm

Mars                           1.9 cm

Jupiter                     39.2 cm

Saturn                      33.1 cm

Uranus                     14.0 cm

Neptune                  13.6 cm

In this question we must use conversion factor to calculate the scaled diameters by means of the following direct relationship:

d = k · D     (1)

Where:

The conversion factor is found by using the real and scaled diameter of the Earth:

k = 3.5 cm/12,756 km

k = 7/25512 cm/km

Then, we determine the scaled diameters of the rest of planets:

Mercury                      1.4 cm

Venus                        3.3 cm

Mars                           1.9 cm

Jupiter                     39.2 cm

Saturn                      33.1 cm

Uranus                     14.0 cm

Neptune                  13.6 cm

The statement reports a table with numerous mistakes, the correct table is shown below:

Planet               Diameter (km)             Scaled Diameter (cm)

Mercury                  4,879

Venus                    12,104

Earth                      12,756                                    3.5

Mars                        6,792                                    

Jupiter                 142,984

Saturn                120,536

Uranus                    51,118

Neptune               49,528

To learn more on scale factors: https://brainly.com/question/22312172

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Answer:

yes

Explanation:

...........................

let's find the acceleration first :

now, we know that :

hence, mass = 6kg

Answer:

1.no because the apple fall towards the earth due to gravity.

2.Yes because when he/she is too far from earth the earth's gravity is not strong enough to pull them down and because there is no gravity in space.

3.It falls down and becomes much more heavy.

Explanation:

give brainliest

Answer:

1) 1kg

2) 9.81kg

4) 5N

5) 4N

6) 0N

7) 0N

8) 13

Explanation: