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3 years ago

Endocrine system immune response

1 answer:

5 0

Id say this is more of a biology question or even a psychology question , well its not a question at all but the endocrine system is a collection of glands that secrete hormones direct to the blood system (circulatory system) to be sent to the desired / target organ , an example of a gland could be the pituitary gland (located towards rear of brain)

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A projectile is shot at an angle 45 degrees to the horizontalnear the surface of the earth but in the absence of air resistance.

ivann1987 [24]

Answer:

v₂ = 176.24 m/s

Explanation:

given,

angle of projectile = 45°

speed = v₁ = 150 m/s

for second trail

speed = v₂ = ?

angle of projectile = 37°

maximum height attained formula,

$H_{max}= \dfrac{v^2 sin^2(\theta)}{g}$

now,

$H_{max}= \dfrac{v_1^2 sin^2(\theta_1)}{g}$

$H_{max}= \dfrac{v_2^2 sin^2(\theta_2)}{g}$

now, equating both the equations

$\dfrac{v_2^2}{v_1^2}=\dfrac{sin^2(\theta_1)}{sin^2(\theta_2)}$

$\dfrac{v_2^2}{150^2}=\dfrac{sin^2(45^0)}{sin^2(37^0)}$

v₂² = 31061.79

v₂ = 176.24 m/s

velocity of projectile would be equal to v₂ = 176.24 m/s

8 0

3 years ago

What is the measurement 111.009 mm rounded off to four significant digits?

dedylja [7]

111.0 because 111.009 rounds off to 111.01, thus rounding again off to 111.0

4 0

3 years ago

Which of the following best describes the term thermal energy? Choose one: A. The energy of an object in motion due to its mass

o-na [289]

Answer:

The correct option is (d).

Explanation:

The energy a particle has because of its charge and its position relative to another particle is called thermal energy.
It is the energy that comes from heat. This is generated by the movement of the particles in an object.
Thermal energy is the energy an object or system has due to the movement of particles within.

Hence, the correct option is (d).

8 0

3 years ago

Which of the following is not a source of light? *<br> a) sun<br> b) star<br> c) mirror<br> d)cfl

Vladimir [108]

I think that would be c) mirror because mirrors reflects light and can't create it.

5 0

3 years ago

When connecting a step down transformer what does the h1 symbol denote?

densk [106]

Answer: Primary coil

A Step-down transformer is an electrical device which is used to decrease the voltage using magnetic induction. The windings of the primary coil are more than the windings of the secondary coils. h1, h2 notations are used to refer to primary coils. On the other hand, x1, x2 notations are used to refer to the secondary coils of the transformer. In case of step-up transformer, the windings of primary coil are less than the secondary in order to increase the voltage.

8 0

3 years ago