All categories

4 years ago

1. Which object has the greatest inertia?

Physics

1 answer:

Digiron [165]4 years ago

7 0

Answer:

1.c,2.c,3.a,4.d

Explanation:

the following answer are listed with there number

You might be interested in

Does a spherical bubble of air in a volume of water act to converge or to diverge light passing through it?

viktelen [127]

Answer:

diverge light

Explanation:

The refractive index of water is greater than that of air which means that water is more denser than air and also air is optically rarer than water.

Thus,

When the beam of the light is incident from the air to the bubble which contains air, the light bends away from the normal and then the light travels from air to water and bend towards the normal. Thus, the light is first bend away from the normal and then towards the normal which means that the bubble has diverging nature. The light will likely to diverge.

A image is shown below for better understanding.

8 0

3 years ago

Need help on number 5 and 6

Whitepunk [10]

Answer:

jowieahudsfnkdmlew2l,poeq3riugjnkfmdko

Explanation:

4 0

3 years ago

Read 2 more answers

Which of the following is most critical for our study of outter space

nordsb [41]

In my opinion, the answer would be d: a universal language. D would technically be more important because there are so many foreign scientific companies and to get the information we need to study the universe, we should communicate and give eachother what we have of our resources as we work for it.

6 0

3 years ago

When two kinds of pulleys are used together the system is called

jekas [21]

They are called fixed and movable pulleys

3 0

3 years ago

Determined to test the law of gravity for himself, a student walks off a skyscraper 180 m high, stopwatch in hand, and starts hi

Sati [7]

Answer:

a) v₀ = - 164.62 m / s , c) y = 122.5 m

Explanation:

We can solve this exercise using the free fall kinematic relations.

We put our reference system on the floor, so the height of the skyscraper is y₀ = 180m and the floor level is y = 0 m

For the boy

y = y₀ + v₀ t - ½ g t²

with free fall its initial speed is zero

y = ½ g t2

For superman

y = y₀ + v₀ (t-5) - ½ g (t-5)²

how superman grabs the lot just before hitting the ground

we look for the time it takes the boy down

t = √ (2 y₀ / g)

t = √ (2 180 / 9,8)

t = 6.06 s

in the equation for superman, we clear the volume and calculate

v₀ (t-5) = -y₀ + ½ g (t-5)²

v₀ (6.06 -5) = -180 + ½ 9.8 (6.06 -5)²

v₀ 1.06 = -174.49

v₀ = - 174.49 / 1.06

v₀ = - 164.62 m / s

the negative sign indicates that the initial speed is down

b) to graph the position of the two we use the table

t (s) Y_boy (m) Y_superman (m)

0 180 180

1 175.1 180

5 57.5 180

6 3.6 10.18

see attachment for the two curves

c) calculate the height that falls a lot in the 5 seconds (t = 5)

y = -1/2 g t²

y = ½ 9.8 5²

y = 122.5 m

for this height superman has not yet left the skyscraper, so the boy hits the ground

8 0

4 years ago