Ask question

Ask question

All categories

3 years ago

15

A father racing his son has 1/2 the kinetic energy of the son, who has 1/4 the mass of the father. The father speeds up by 1.4 m

/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son?

1 answer:

Assoli18 [71]3 years ago

5 0

answer:idk because idk how to work it out

You might be interested in

Mady has an infinite number of balls and empty boxes available to her. The empty boxes, each capable of holding four balls, are

True [87]

Answer:

The number of balls in the box at 2010th step is 6 balls

Explanation:

Since the boxes are arranged from left to right, and since the empty boxes are capable of holding 4 balls at once.

Therefore, her steps would follow this pattern ;

00001 - 1st Step

0002 - 2nd Step

0003 - 3rd Step

0004 -4th Step

0010 - 5th Step

0011 - 6th Step

0021 - 7th step

0031 - 8th step

0041 - 9th step

Looking at this pattern, it is obvious this digits are in base 5 because once we count to 4 in a unit, we move to the next at 1.

Thus,at Mady's 2010th step, we'll convert to base 5,thus 2010 in base 5 is calculated as;

2010 ÷ 5 = 402 r 0, so Base 5 is now: _ _ _ _ 0.

402 ÷ 5 = 80 r 2, so Base 5 is now: _ _ _ 2 0.

80 ÷ 5 = 16 r 0, so Base 5 is now:

_ _ 0 2 0.

16 ÷ 5 = 3 r 1, so Base 5 is now: _ 1 0 2 0.

3 ÷ 5 = 0 r 3, so Base 5 is now: 3 1 0 2 0.

So 2010 in base 10 is 31020 in base 5. Thus,the number of balls in the box at 2010th step is equal to 3 + 1 + 0 + 2 + 0 = 6balls

3 0

2 years ago

Compare the relative strengths of the nuclear force and the electric force

Serggg [28]

Answer:

To establish this relationship we must examine the potentials that these forces create. The electrical potential is described by

Ve = k q / r

The potential for strong nuclear force is

Vn (r) = - gs / 4pir exp (-mrc / h)

Where gs is the stacking constant and r the distance between the nucleons,

We can compare these potentials where the force is derived from the relationship

E = -dU / dr

F = q E

Explanation:

6 0

2 years ago

Which of these statements is false? Question 18 options:

Katarina [22]

True because the kind of light we get is white light and everything we see is actually every colour except the color we are seeing because that is wwhat is reflected

6 0

3 years ago

I will fan and give 2 medals!!!!!!

Maksim231197 [3]

<span> Corona </span>

<span>I. </span>Rare gaseous envelope

<span>II. </span>Irregular pearly glow

<span>III. </span>Total solar eclipse

<span>IV. </span>Surrounds darkened moon

<span>V. </span>Caused by diffraction

<span> Solar Prominence </span>

<span>I. </span>loop shape

<span>II. </span>large bright gaseous

<span>III. </span>luminous hydrogen gas

<span>IV. </span>rises above chromospheres

<span>V. </span>anchored to surface (sun’s surface)

<span> Solar Flare </span>

<span>I. </span>Intense High-energy

<span>II. </span>Causes electromagnetic disruptions

<span>III. </span>In solar atmosphere

<span>IV. </span>Varies in brightness

<span>V. </span>Emits radiation

<span> Sunspots </span>

<span>I. </span>Surface dark spots

<span>II. </span>Strong magnetic fields

<span>III. </span>Solar magnetic storms

<span>IV. </span> Visible through telescope

<span>V. </span>Cooler than photospheres

I did this in class I got 100%

7 0

2 years ago

How do greenhouse gases such as CO2 and N2O contribute to an increase in Earth’s atmospheric temperature?

konstantin123 [22]

CO2 and N2O keep the energy that gets to Earth from the sun inside the atmosphere. Without greenhouse gases, our planet would be too cold. But due to the recent increase in greenhouse gases, more energy released from the sun is contained in the Earth, heating it up.

3 0

3 years ago

Read 2 more answers