All categories

2 years ago

Pls help me solve these questions.

Physics

1 answer:

aliina [53]2 years ago

5 0

The value of constant in terms of Force, k, A, V and ρ is x = ln (F /kAρV ).

<h3>What is opposing force?</h3>

The force which tends to oppose motion of fluid in forward direction like shear stress in liquids and friction force in solids

A body moving through the air at speed V, experiences the retarding force.

Force = kAρVˣ

where A is the surface area, ρ is the density of air and k is the numerical constant.

Taking natural logarithm both sides,

ln F = ln (kAρVˣ)

ln F = x ln (kAρV)

x = ln F / ln (kAρV)

x= ln (F /kAρV )

x= ln F - ln (kAρV)

Thus, the value of constant is deduced in terms of Force , k, A, V and ρ.

Learn about opposing force.

brainly.com/question/13191643

#SPJ1

You might be interested in

PLZ HURRY NEED HELP ASAP!!!!!!!!!!!!!!

Bezzdna [24]

Answer: 1/R = 1/r1 + 1/r2 + 1/r3

Explanation:

Just did the test myself. Hope this helps!

6 0

3 years ago

When a person holds a ball above earth's surface, where is this potential energy stored?

inn [45]

Answer:

in the ball

Explanation:

potential energy is where an object has energy, always, but it isn't always moving, and when you drop the ball, it has kinetic energy.

3 0

3 years ago

A small car with a mass of 800kg moving with a velocity of 27.8 m/s. The car stops at a yellow light in 3.9 seconds. What force

raketka [301]

Answer:

F = 5702.56 N

Explanation:

Given that,

Mass of a small car, m = 800 kg

Initial speed of the car, u = 27.8 m/s

Final speed, v = 0

Time, t = 3.9 s

We need to find the force did it take for the car to stop.

The force acting on an object is given by :

$F=ma\\\\F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{800\times (0-27.8)}{3.9}\\\\F=-5702.56\ N$

So, the magnitude of force acting on the car to stop is 5702.56 N.

4 0

3 years ago

Am object of ma 4 i thrown vertically upward from level ground with initial peed of 20. How high did the object go

denis23 [38]

The maximum height of the object when thrown at the speed of 20 m/s is 20 m.

What is speed?

Speed is the magnitude of the rate of change of the position of any object with time which is a scalar quantity. It is the ratio of speed by time with the unit m/s or cm/s.

The height this object can travel with initial speed of 20 m/s can be calculated as,

where v is the final velocity, u is the initial velocity a is the acceleration due to gravity s is height.

0 = 20^2 + 2 (-10) s

s = 400 / 20 = 20 m

Therefore, the maximum height the object can travel with initial speed of 20 m/s is 20m.

To learn more about the speed click on the given link brainly.com/question/13943409

#SPJ4

8 0

2 years ago

An empty water tank has a rectangular base with side lengths of 1.2 m and 2.3 m. The weight of the tank applies a pressure of 35

LekaFEV [45]

Answer:

Weight = 966 Newton.

Explanation:

Given the following data;

Length = 1.2 m

Width = 2.3 m

Pressure = 350 Pa

To find the weight of the tank;

We know that weight is the force of gravity acting on an object multiplied by its mass.

Weight = mg = force

Hence, we would determine the force using the parameters that were given.

But we would first determine the area of the rectangular tank.

Area of rectangle, A = length * width

A = 1.2 * 2.3

A = 2.76 m²

Mathematically, pressure is given by the formula;

Pressure = force/area

Force = pressure * area

Substituting into the formula, we have;

Force = 2.76 * 350

Force = 966 Newton

Therefore, the weight of the tank is 966 Newton.

5 0

3 years ago

Pls help me solve these questions.​

Pls help me solve these questions.