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3 years ago

Which layer lies between the stratosphere and the

Physics

2 answers:

Pepsi [2]3 years ago

8 0

The answer is Mesosphere

krek1111 [17]3 years ago

7 0

Answer: A: mesosphere

Explanation:

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Why are we unable to work long without food

nataly862011 [7]

Answer:

Without food your not able to produce energy thats why you cannot work so long

7 0

3 years ago

If you have 12 atoms of hydrogen before a chemical reaction how many atoms of hydrogen will be president after the chemical reac

kaheart [24]

If you have 12 atoms of hydrogen before a chemical reaction, the number of hydrogen atoms that will be present after the chemical reaction is 12 atoms.
The Law of Conservation of Mass (LOCOM) states that mass is neither created nor destroyed before and after any chemical reaction.
According to the Law of Conservation of Mass (LOCOM), a balanced chemical equation requires that the number of atoms on the reactant side must be equal to the number of atoms on the product side of any chemical reaction.
In this context, a chemical reaction having 12 atoms of hydrogen as reactants at the beginning, should also produce a total of 12 atoms of hydrogen as products at the end of the chemical reaction.

4 0

2 years ago

A uniform rod with a mass of 100 g and a length of 50.0 cm rotates in a horizontal plane about a fixed vertical, frictionless pi

Alex787 [66]

(a) The angular speed of the system at the instant the beads reach the end of the rod is 9.26 rad/s.

(b) The angular speed of the rod after the after the beads fly off the rod's ends is 25.71 rad/s.

<h3>Moment of inertia through the center of the rod</h3>

I = ¹/₁₂ML²

I = ¹/₁₂ (0.1)(0.5)²

I = 0.0021 kgm²

For the beads, I = 2Mr² = 2(0.03 x 0.1²) = 0.0006 kgm²

Total initial moment of inertia, Ii = 0.0021 kgm² + 0.0006 kgm²

I(i)= 0.0027 kgm²

When the beads reach the end, I = 2Mr² = 2(0.03)(0.25)² = 0.00373 kgm²

Total final moment of inertia, I(f) = 0.0021 kgm² + 0.00373 kgm²

I(f) = 0.00583 kgm²

<h3>Speed of the system</h3>

The speed of the system at the moment the beads reach the end of the rod is calculated as follows;

$I_i \omega_i = I_f\omega _f\\\\\omega _f = \frac{I_i \omega_i}{I_f}$

$\omega_f = \frac{0.0027 \times 20}{0.00583} \\\\\omega _f = 9.26 \ rad/s$

<h3>Speed of the rod when the beads fly off</h3>

$\omega_f = \frac{0.0027 \times 20}{0.0021} \\\\\omega _f = 25.71 \ rad/s$

Learn more about moment of inertia of rods here: brainly.com/question/3406242

5 0

3 years ago

A bored student makes a poor life decision and decides to go do donuts in a school parking lot. The student jumps into his/her 1

DerKrebs [107]

Answer:

The maximum speed the car can go before it star to slide is

$v=8.2 m/s$

Explanation:

Using the conservation of energy the force in motion is

$F=m*a$

$F_k=u*F_N$

$F_N=m*g$

$F_k=m*a_c$

$u*m*g=m*a_c$

$a_c=\frac{V^2}{r}$

$u*g=\frac{V^2}{r}$

Solve to v'

$v=\sqrt{u*r*g}=\sqrt{10m*0.7*9.8m/s^2}=\sqrt{68.6 m^2/s^2}$

$v=8.2 m/s$

7 0

4 years ago

What must modelo and theories do in order to remain valid ?

yulyashka [42]

1) There must not be credible contrary evidence to the ideas suggested by the theory.
2) The models and theories must obey the already established laws of physics. Laws are theories which have such an overwhelming amount of evidence that they are universa, and cannot be disproven.

6 0

3 years ago