What is a circuit,s resistance if 12v produces 2A of current ?

You take a Frisbee to the top of the Washington Monument and send it sailing along horizontally at a speed of 5 m/s from the ver

Dominik [7]

This question can be solved with the help of the equations of motion.

A) The Frisbee will remain in the air for "5.87 s".

B) The frisbee will go "29.4 m" down the range.

A)

To calculate the time, the frisbee will remain in the air, we will use the second equation of motion, for the vertical motion.

$h = v_it+\frac{1}{2}gt^2\\\\$

where,

h = height = 169.2 m

vi = initial velocity's vertical component = 0 m/s

g = acceleration due to gravity = 9.81 m/s²

t = time = ?

Therefore,

$169.2\ m = (0\ m/s)(t)+\frac{1}{2}(9.81\ m/s^2)t^2\\\\t = \sqrt{\frac{(169.2\ m)(2)}{9.81\ m/s^2}}$

t = 5.87 s

B)

Now, we will calculate the horizontal range by applying the equation for constant motion. Because the velocity in the horizontal direction will remain constant due to no air resistance

s = vt

where,

s = horizontal range = ?

v= initial velocity's horizontal component = 5 m/s

t = time = 5.87 s

Therefore,

s = (5 m/s)(5.87 s)

s = 29.4 m

Learn more about equations of motion here:

brainly.com/question/9772550?referrer=searchResults

8 0

3 years ago

At which position would a person on Earth be able to view a solar eclipse? A B C D

sweet-ann [11.9K]

The answer would be A, since at that position the Earth is fully/partially being engulfed in a shadow cast by the moon from the sun’s rays.

Hope this helps!

5 0

3 years ago

The length of a certain wire is doubled and at the same time its radius is also doubled. What is the new resistance of this wire

Leto [7]

Answer:

R' = R/2

Therefore, the new resistance of the wire is twice the value of the initial resistance.

Explanation:

Consider a wire with:

Resistance = R

Length = L

Area = A = πr²

where, r = radius

ρ = resistivity

Then:

R = ρL/A

R = ρL/πr² --------------- equation 1

Now, the new wire has:

Resistance = R'

Resistivity = ρ

Length = L' = 2 L

Radius = r' = 2r

Area = πr'² = π(2r)² = 4πr²

Therefore,

R' = ρL'/πr'²

R' = ρ(2 L)/4πr²

R' = (1/2)(ρL/πr²)

using equation 1:

R' = R/2

Therefore, the new resistance of the wire is twice the value of the initial resistance.

4 0

3 years ago

Tarik winds a small paper tube uniformly with 185 turns of thin wire to form a solenoid. The tube's diameter is 7.51 mm and its

bonufazy [111]

The inductance, in microhenrys, of Tarik's solenoid 196μH.

<h3>What is Solenoid?</h3>

A coil of enameled or insulated wire coiled on a rod-shaped form constructed of solid iron, solid steel, or powdered iron is referred to as a solenoid. These kinds of gadgets can be utilised as miniaturised wireless receiving antennas, inductors in electrical circuits, and as electromagnets.

The inductance (L) of a coil wire (e.g solenoid) is given by;

L = μ₀N²A / l --------------(i)

Where;

l = the length of the solenoid

A = cross-sectional area of the solenoid

N= number of turns of the solenoid

μ₀ = permeability of free space = 4π x 10⁻⁷ N/A²

From the question;

N = 185 turns

l = 2.19cm = 0.019m

diameter, d = 7.51mm = 0.00751m

But;

A = π d² / 4 [Take π = 3.142 and substitute d = 0.00751m]

A = 3.142 x 0.00751² / 4

A = 4.42 x 10⁻⁵m²

Substitute these values into equation (i) as follows;

L = 4π x 10⁻⁷ x 185² x 4.42 x 10⁻⁵ / 0.0219 [Take π = 3.142]

L = 4(3.142) x 10⁻⁷ x 185² x 4.42 x 10⁻⁵ / 0.0219

L = 196 x 10⁻⁶ H

L = 196 μH

Therefore the inductance in microhenrys of the Tarik's solenoid is 196 μH.

to learn more about Solenoid go to - brainly.com/question/1873362

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7 0

2 years ago

What's the gravity?

poizon [28]

Answer:

gravity is the force by which a planet or another body draws objects towards its Centre. the force of gravity keeps all of the planets in an orbit around the sun.

Explanation:

what is gravity made of?

gravity are made of proposed gravity parts that are made quantum particles which called gravitational anywhere there is gravitation there is gravity like on Earth in the Solar System most importantly in the minisclue infant and intervention universe .

6 0

3 years ago