CONVERT 75 ⁰F INTO ⁰C

Friction always opposes an objects? A) Power B) Weight C) Motion D) Net force

marin [14]

Friction always opposes motion

8 0

4 years ago

2.19 The drag characteristics of a blimp traveling at 4 m/s are to be studied by experiments in a water tunnel. The prototype is

Naily [24]

Answer:

$Vm=0.894m/s$

Explanation:

From the question we are told that

Velocity if travel $v=4m/s$

Diameter of prototype $d_1=20m$ and $d_2=110m$

Scale ratio= $\frac{1}{20}$

Generally Velocity of of the model using Froud's model is mathematically given as

$Fm=Fp$

$\frac{Vm}{\sqrt{Lmg}} =\frac{Vp}{\sqrt{Lpg}}$

$Vm=Vp*\frac{Vp}{\sqrt{Lpg} }$

$Vm=4*\frac{1}{\sqrt{20}}$

$Vm=0.894m/s$

8 0

3 years ago

In the study of personality, the

anyanavicka [17]

Answer:

Five-Factor

Explanation:

The Five-Factor model is a trait model of personality that includes different traits that are believed to underlie each individual's basic tendencies.

These different traits are:

1. Openness

2. Conscientiousness

3. Extraversion

4. Agreeable Ness

5. Neuroticism.

It is often shortened and referred to as OCEAN or CANOE.

It is a majorly acknowledged personality theory among scientists.

Hence, in the study of personality, the FIVE FACTOR model includes different traits that are believed to underlie each individual's basic tendencies.

4 0

3 years ago

What is the component of d1 along the direction of d2?

aniked [119]

I don't know lol hahahahhahahahahahahahahahahahahaha

8 0

3 years ago

Two floors in a building are separated by 4.1 m. People move between the two floors on a set of stairs. (a) Determine the change

Ket [755]

Answer:

a) The change in potential energy of a 3.0 kilograms backpack carried up the stairs.

b) The change in potential energy of a persona with weight 650 newtons that descends the stairs is -2665 joules.

Explanation:

Let consider the bottom of the first floor in a building as the zero reference ( $z = 0\,m$ ). The change in potential energy experimented by a particle ( $\Delta U_{g}$ ), measured in joules, is:

$\Delta U_{g} = m\cdot g\cdot (z_{f}-z_{o})$ (1)

Where:

$m$ - Mass, measured in kilograms.

$g$ - Gravitational acceleration, measured in meters per square second.

$z_{o}$ , $z_{f}$ - Initial and final height with respect to zero reference, measured in meters.

Please notice that $m\cdot g$ is the weight of the particle, measured in newtons.

a) If we know that $m = 3\,kg$ , $g = 9.807\,\frac{m}{s^{2}}$ , $z_{o} = 0\,m$ and $z_{f} = 4.1\,m$ , then the change in potential energy is:

$\Delta U_{g} = (3\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)\cdot (4.1\,m-0\,m)$

$\Delta U_{g} = 120.626\,J$

The change in potential energy of a 3.0 kilograms backpack carried up the stairs.

b) If we know that $m\cdot g = 650\,N$ , $z_{o} = 4.1\,m$ and $z_{f} = 0\,m$ , then the change in potential energy is:

$\Delta U_{g} = (650\,N)\cdot (0\,m-4.1\,m)$

$\Delta U_{g} = -2665\,J$

The change in potential energy of a persona with weight 650 newtons that descends the stairs is -2665 joules.

5 0

3 years ago