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777dan777 [17]
3 years ago
8

The formulas used to analyze the horizontal and vertical motion of projectiles launched at an angle involve the use of which fun

ction(s)?
Physics
2 answers:
dlinn [17]3 years ago
7 0
Sin/Cos if that's one of the answers.  you have to use trig because you must resolve into components.
White raven [17]3 years ago
4 0

<u>Answer</u>

Sine and Cosine

<u>Explanation</u>

For the vertical and the horizontal forces the component is zero. If the only the horizontal and the vertical forces are given and you want to find the force at a given angle, you calculate the component forces.

To find the component forces you apply the trigonometric functions sine and cosine.


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What are the arrangement of resistors in series ​
Mama L [17]

Answer:

A chain

Explanation:

A series circuit is a circuit, where the resistors are arranged in a chain. They are aligned like this so the current only has one path to take. The current quantity is the same through each resistor.

If you ever have trouble remembering this you can think of a movie series which goes on and on and on. And remembering a parallel circuit is simpler because everything in the circuit will be parallel!

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4 years ago
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Why is alternating current more effective at long–distance travel than direct current?
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Because we can send high voltage, low current which is more efficient since large amounts of current in the line causes power inefficiencies. AC can be transformed locally to high current lower voltage
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3 years ago
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An above ground swimming pool of 30 ft diameter and 5 ft depth is to be filled from a garden hose (smooth interior) of length 10
STALIN [3.7K]

This question involves the concepts of dynamic pressure, volume flow rate, and flow speed.

It will take "5.1 hours" to fill the pool.

First, we will use the formula for the dynamic pressure to find out the flow speed of water:

P=\frac{1}{2}\rho v^2\\\\v=\sqrt{\frac{2P}{\rho}}

where,

v = flow speed = ?

P = Dynamic Pressure = 55 psi(\frac{6894.76\ Pa}{1\ psi}) = 379212 Pa

\rho = density of water = 1000 kg/m³

Therefore,

v=\sqrt{\frac{2(379212\ Pa)}{1000\ kg/m^3}}

v = 27.54 m/s

Now, we will use the formula for volume flow rate of water coming from the hose to find out the time taken by the pool to be filled:

\frac{V}{t} = Av\\\\t =\frac{V}{Av}

where,

t = time to fill the pool = ?

A = Area of the mouth of hose = \frac{\pi (0.015875\ m)^2}{4} = 1.98 x 10⁻⁴ m²

V = Volume of the pool = (Area of pool)(depth of pool) = A(1.524 m)

V = [\frac{\pi (9.144\ m)^2}{4}][1.524\ m] = 100.1 m³

Therefore,

t = \frac{(100.1\ m^3)}{(1.98\ x\ 10^{-4}\ m^2)(27.54\ m/s)}\\\\

<u>t = 18353.5 s = 305.9 min = 5.1 hours</u>

Learn more about dynamic pressure here:

brainly.com/question/13155610?referrer=searchResults

7 0
3 years ago
A body of mass 5kg is taken from height 10m. find the increase in potential energy​
Vadim26 [7]

Answer:

500 joule

Explanation:

given,

mass(m)= 5kg

height(h)= 10m

acceleration due to gravity(g)= 10m/s^2

potential energy =?

We know that,

potential energy = mgh

= 5×10×10

= 500 joule

3 0
3 years ago
A 4000-kg car traveling with a speed of 25 m/s skids to a stop on a flat/level surface. The car experiences a 3000N force of fri
MrMuchimi

Answer:

416.6 m

Explanation:

There are many students who can not get answers step by step and on time

So there are a wats up group where you can get help step by step and well explained.

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