1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
irinina [24]
3 years ago
5

Which element in the earth’s atmosphere is essential for human life, is extremely rare or nonexistent in the atmospheres of othe

r planets in our solar system, and is primarily responsible for the development of life outside the oceans?
Physics
1 answer:
gayaneshka [121]3 years ago
3 0
That element is oxygen.  It is also highly volatile since it reacts with other elements and is flammable. 
You might be interested in
(6) A 75 kg human total footprint area is 0.05 m2 when wearing winter boots. Suppose that you want to walk on snow that can at m
fredd [130]

Answer:

0.25m²

Explanation:

We know that the summation of forces in the vertical direction is zero

So

PA-mg=0

A=mg/p

So

Substituting

A= 75* 9.8/3*10^-3

=0.25m² which is the total shoe area

3 0
3 years ago
A man walking on a tightrope carries a long a pole which has heavy items attached to the two ends. If he were to walk the tight-
katen-ka-za [31]

Answer:

 I_weight = M L²

this value is much larger and with it it is easier to restore balance.I

Explanation:

When man walks a tightrope, he carries a linear velocity, this velocity is related to the angular velocity by

            v = w r

For man to maintain equilibrium needs the total moment to be zero

             ∑τ = I α

              S  τ = 0

The forces on the home are the weight of the masses, the weight of the man and the support on the rope, the latter two are zero taque the distance to the center of rotation is zero.

Therefore the moment of the masses and the open is the one that must be zero.

If the man carries only the bar, we could approximate it by two open one on each side of the axis of rotation formed by the free of the rope

              I = ⅓ m L² / 4

As the length of half the length of the bar and the mass of the bar is small, this moment is small, therefore at the moment if there is some imbalance it is difficult to recover.

If, in addition to the opening, each of them carries a specific weight, the moment of inertia of this weight is

             I_weight = M L²

this value is much larger and with it it is easier to restore balance.

5 0
3 years ago
Rock candy is made from crystallized sugar. What is crystallization?
ankoles [38]

Answer: Rock candy is candy made of large sugar crystals. To make rock candy, a supersaturated solution of sugar in water is created and left undisturbed for a few days. The driving force behind crystallization is supersaturation.

7 0
2 years ago
Read 2 more answers
1. The large wheels on the train have a mass of 0.5 kg, while the small wheels have a mass of 0.15 kg. The train body, and child
blsea [12.9K]

Answer: 60.975 Joules

KE = 1/2 mv^2

=> 1/2 * 40.65 * 3

=> 60.975 J

5 0
2 years ago
A rubber-wheeled 50 kg cart rolls down a 35 degree concrete incline. Coefficient of rolling friction between rubber and concrete
lapo4ka [179]

Answer:

(a) 5.62 m/s²

(b) 5.46 m/s²

Explanation:

The given values are:

mass,

m = 50 kg

angle

= 35°

(a)

If friction neglected,

⇒ F_x=mgSin \theta=ma

⇒ a_x=gSin \theta

       =9.8 \ Sin35^{\circ}

       =5.62 \ m/s^2

(b)

If friction present,

⇒ F_x=mgCos \theta

⇒ F_x=mgSin \theta-\mu_r mgCos \theta

⇒ a=gSin \theta-\mu_rgCos \theta

      =9.8 \ Sin35^{\circ}-0.02\times 9.8 \ Cos30^{\circ}

      =5.46 \ m/s^2

8 0
2 years ago
Other questions:
  • 9. A child standing on a bus remains still when the bus is at rest. When the bus moves forward and then slows down, the child co
    12·1 answer
  • 20 cubic inches of a gas with an absolute pressure of 5 psi is compressed until it’s press reaches 10 psi. What is the new volum
    5·1 answer
  • A gas is in a sealed container.Part ABy what factor does the gas temperature change if the volume is doubled and the pressure is
    14·1 answer
  • Elements with low specific heat values have which characteristics
    7·1 answer
  • Can someone help me?!!!!!
    7·1 answer
  • If two stars in the sky are separated by twice the angle projected by your index and pinky fingers, then how many degrees are th
    8·1 answer
  • What is meant by the statement that you don’t “own” the atoms that make up your body?
    6·1 answer
  • A baseball is thrown off of a building with an initial velocity of 17 m/s and lands 2.3 seconds later. How tall is the building?
    9·1 answer
  • Example 4:
    13·1 answer
  • What other objects in our solar systems might influence etiams movement as it travels through space? Why?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!