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3 years ago

Find the Horizontal (x) vector for these forces.

Physics

1 answer:

Anestetic [448]3 years ago

6 0

Answer:

See the explanation below.

Explanation:

The force is a vector therefore we can decompose the force into components x & y. as we need the horizontal component of the force, we must use the cosine function of the angle.

$F_{1x}=30.8*cos(20)\\F_{1x}=28.94[N]\\F_{2x}=34.3*cos(20)\\\\F_{2x}= 32.23[N]$

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You are at the top of the Empire State Building on the 102nd floor, which is located 373 m above the ground, when your favorite

Liula [17]

Answer:

1.5 m

Explanation:

H = actual height of the superhero = ?

H₀ = height of the superhero as observed = 1.73 m

v = speed of the superhero = 0.50 c

Using the equation

$H = H_{o} \sqrt{1 - \left ( \frac{v}{c} \right )^{2}}$

Inserting the values

$H = 1.73 \sqrt{1 - \left ( \frac{0.50 c}{c} \right )^{2}}$

H = 1.5 m

3 0

4 years ago

For free convection from a surface to the ambient fluid, an increase in Grashof number

Kipish [7]

Answer: Option(d) is the correct option

Explanation:

Grashof number (Gr) is the ratio that is between buoyant force to viscous force persist on fluid on layer of velocity boundary.It is in dimensionless form.

According to the question ,

Laminar flow has $10^{3}$ < (Gr) < $10^{6}$ as range of boundary layer for free convection.

For transition to take place into turbulent form, it has range of $10^{8} < Gr < 10^{9}$ in terms of free convection.

So, if Grashof number (Gr) is increased then it might tend to change flow from laminar form into turbulent form for free convection.

Other options are incorrect because increasing in Grashof number does not always change the flow mechanism from laminar to turbulent or vice versa neither may cause to laminar flow. Therefore, the correct option is option(d).

4 0

3 years ago

Which of the circuit offers greater resistance to the flow of current 1A or 2A ?

Dafna1 [17]

1 A offers greater resistance

7 0

3 years ago

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If Earth orbited the Sun in 9 months instead of 12, then, compared with a sidereal day, a solar day would be

Tcecarenko [31]

Answer:

longer

Explanation:

The relationship between the solar day and sidereal is as follows:

The length of the sidereal day is

= (Solar day) (solar year ÷ solar year + 1 day)

As it can be seen that the day i.e. solar its length would be greater as compared with the sidereal day.

In the case when the earn orbited the sun in 9 months rather than 12 so here the sidereal day would be the similar but the solar day would be longer as compared with the original one

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3 years ago

Who were the first two people in the universe?<br> what is faster then the speed of light?

ivanzaharov [21]

Answer:

Adam and Eve are the Bible's first man and first woman. the only thing capable of traveling faster than the speed of light is, somewhat paradoxically, light itself, though only when not in the vacuum of space. Of note, regardless of the medium, light will never exceed its maximum speed of 186,282 miles per second.

Explanation:

5 0

3 years ago

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