All categories

2 years ago

When the hydrodynamic boundary layer thickness which is the distance from the surface?

1 answer:

3 0

The distance from the surface where the is measured as the hydrodynamic boundary layer thickness. The local exterior velocity is the same as the speed.

<h3>What is velocity?</h3>

Velocity is the direction at which an object is moving and serves as a measure of the rate at which its position is changing as seen from a specific point of view and as measured by a specific unit of time (for example, 60 km/h northbound).
In kinematics, the area of classical mechanics that deals with the motion of bodies, velocity is a fundamental idea.
A physical vector quantity called velocity must have both a magnitude and a direction in order to be defined.
Speed is the scalar absolute value (magnitude) of velocity; it is a coherent derived unit whose quantity is measured in metres per second (m/s or ms1) in the SI (metric system).

<h3>What is speed?</h3>

The speed of an object, also known as v in kinematics, is the size of the change in that object's position over time or the size of the change in that object's position per unit of time, making it a scalar quantity.
The instantaneous speed is the upper limit of the average speed as the duration of the time interval gets closer to zero.
The average speed of an object in a period of time is the distance traveled by the object divided by the duration of the interval.
Velocity and speed are not the same thing.

Learn more about velocity here:

brainly.com/question/18084516

#SPJ4

You might be interested in

A current of 1.53 a flows through a 63.5 resistor for 6.4 min. How much heat was generated by the resistor

Ira Lisetskai [31]

I am not sure exactly maybe u should ask a friend

8 0

4 years ago

A 2.5 kg stone is released from rest and falls toward Earth. After 4.0 s, magnitude of its momentum in kg.m/s is :

11111nata11111 [884]

Answer:

Explanation:

momentum = mass * velocity

velocity = initial speed + acceleration * time where initial speed =0, acceleration = 9.81, time = 4

8 0

3 years ago

Read 2 more answers

Examples of kinetic theory of convection

Harrizon [31]

Answer:

example of kinetic theory include brownian motion the random movement of the particles because the consolation with the air molecules and how gas is behave boiling and j l also this cyclone explain how temperature affects the

7 0

3 years ago

Read 2 more answers

An automobile has a mass of 1200 kg. What is its kinetic energy, in kJ, relative to the road when traveling at a velocity of 50

nikdorinn [45]

Answer:

K.E = 463.04 k J

P = 23.14 Watt

Explanation:

given,

mass of automobile = 1200 kg

velocity = 50 km/h

= 50 × 0.278

= 13.9 m/s

kinetic energy = $\dfrac{1}{2}mv^2$

= $\dfrac{1}{2}\times 1200 \times 13.9^2$

K.E = 115.93 k J

vehicle accelerated to velocity = 100 km/h

= 100 × 0.2778

= 27.78 m/s

kinetic energy = $\dfrac{1}{2}mv^2$

= $\dfrac{1}{2}\times 1200 \times 27.78^2$

K.E = 463.04 k J

work done = change in kinetic energy

= 463.04 - 115.93

= 347.11 J

Power = $\dfrac{work\ done}{time}$

Power = $\dfrac{347.11}{15}$

P = 23.14 Watt

7 0

3 years ago

While a car is running, the alternator provides current to the battery and recharges it. which reaction occurs at the anode of a

Marat540 [252]

While a car is running, the alternator provides current to the battery and recharges it. Reduction reaction occurs at the anode of a lead-storage battery during this process .

The Lead-acid battery or lead-storage battery is one of the oldest types of rechargeable batteries.

Lead-storage batteries can be classified as secondary batteries. The chemical reactions that occur in secondary cells are reversible. The chemical process of extracting current from a secondary battery (forward reaction) is called discharging. The method of regenerating active material is called charging.

While recharging, the automobile battery functions like an electrolytic cell. The energy required to drive the recharging comes from an external source, such as an engine of a car. While charging reduction takes place at anode and while discharging oxidation takes place at anode.

To learn more about Lead storage batteries here

brainly.com/question/14773324

#SPJ4

6 0

2 years ago