All categories

3 years ago

You can increase your flexiablity by streaching your bones / muscles

1 answer:

7 0

You can increase your flexibility by stretching with your muscles because when you stretch your muscles get stronger.
hopes this helps you.<span />

You might be interested in

The biological roles of complex organic molecules are determined by their shape -- the way atoms and electrons create charge dis

Hatshy [7]

Answer:

a) P_α = exp (-ΔE / kT), b) P_β = 0.145 , d) ΔE = 309.7 meV

Explanation:

The expression for the number of molecules or particles in a given state in Boltzmann's expression

n = n₀ exp (-ΔE / kT)

Where k is the Bolztmann constant and T the absolute temperature

The probability is defined as the number of molecules in a given state over the total number of particles

P = n / n₀ = exp (- ΔE / kT)

Let's apply this expression to our case

a) P_α = n_α / n₀ = exp (-ΔE / kT)

b) the Boltzmann constant

k = 1,381 10⁻²³ J / K (1 eV / 1.6 10⁻¹⁹ J) = 8.63 10⁻⁵ eV / K

kT = 8.63 105 300 = 2,589 10⁻² eV

P_β = exp (- 50 10⁻³ /2.589 10⁻² = exp (-1.931)

P_β = 0.145

c) If the temperature approaches absolute zero, the so-called is very high, so there is no energy to reach the excited state, therefore or all the molecules go to the alpha state

d) For molecules to spend ¼ of the time in this beta there must be ¼ of molecules in this state since the decay is constant.

P_β = ¼ = 0.25

P_β = exp (- ΔE / kT)

ΔE = -kT ln P_β

ΔE = - 2,589 10⁻² ln 0.25

ΔE = 0.3097 eV

ΔE = 309.7 meV

3 0

3 years ago

A student pulls out his or her chair in order to sit down. The student pulls the chair 0.75 m with a force of 20 N. How much wor

IRINA_888 [86]

Work = Force x displacement
Force= 20N
Displacement= 0.75m

W= 20(0.75)
W= 15 Nm

3 0

3 years ago

A spaceship travels toward the Earth at a speed of 0.97c. The occupants of the ship are standing with their torsos parallel to t

Ket [755]

Answer:

Explanation:

We shall apply length contraction einstein's relativistic formula to calculate the length observed by observer on the earth . For the observer , increased length will be observed for an observer on the earth

$L=\frac{.5}{\sqrt{1-(\frac{.97c}{c})^2 } }$

$L=\frac{.5}{.24}$

L= 2.05

The length will appear to be 2.05 m . and width will appear to be .5 m to the observer on the spaceship. . It is so because it is length which is moving parallel to the direction of travel. Width will remain unchanged.

3 0

4 years ago

A lead ball is dropped into a lake from a diving board 5.0 meters above the water. After entering the water, it sinks to the bot

xxMikexx [17]

Answer:

28.8 meters

Explanation:

We must first determine at which velocity the ball hits the water. To do so we will:

1) Assume no air resistance.

2) Use the Law of conservation of mechanical energy: E=K+P

Where

E is the mechanical energy (which is constant)

K is the kinetic energy.

P is the potential energy.

With this we have $\frac{m}{2} *v^{2} = m*g*h$

Where:

m is the balls's mass <- we will see that it cancels out and as such we don't need to know it.

v is the speed when it hits the water.

g is the gravitational constant (we will assume g=9.8 $\frac{m}{s^{2} }$ .

h is the height from which the ball fell.

Because when we initially drop the ball, all its energy is potential (and $P = - m*g*h$ ) and when it hits the water, all its energy is kinetic ( $K=\frac{m}{2} *v^{2}$ . And all that potential was converted to kinetic energy.