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3 years ago

Why are hot springs and geysers is found in areas of present or a past activity

1 answer:

7 0

<span>Hot springs and geysers are often found in areas of present or past volcanic activity. The hot spring forms when water deep underground is heated by a nearby body of magma or hot rock. The hot water rises and collects in a natural pool; when rising hot water and steam become trapped in a narrow crack, pressure builds until the mixture sprays above the surface as a geyser.</span>

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An athlete runs at a constant velocity of 5.2 m/s. What is the velocity of the athlete relative to the ground?

dimulka [17.4K]

The relative velocity of the athlete relative to the ground is 5.2 m/s

The given parameters;

constant velocity of the athlete, V = 5.2 m/s

let the velocity of the ground = Vg = 0

The relative velocity concept helps us to determine the velocity of a moving object relative to a stationary observer.

The athlete is the moving object in this question while the ground is stationary.

The relative velocity of the athlete relative to the ground is calculated as follows;

$V/V_g = V - V_g = 5.2 - 0 = 5.2 \ m/s$

Thus, the relative velocity of the athlete relative to the ground is 5.2 m/s

Learn more here: brainly.com/question/24430414

5 0

3 years ago

Learning Goal: To practice Problem-Solving Strategy 7.2 Problems Using Mechanical Energy II. The Great Sandini is a 60.0-kg circ

andreev551 [17]

Answer:

v = 15.8 m/s

Explanation:

Let's analyze the situation a little, we have a compressed spring so it has an elastic energy that will become part kinetic energy and a potential part for the man to get out of the barrel, in addition there is a friction force that they perform work against the movement. So the variation of mechanical energy is equal to the work of the fictional force

$W_{fr}$ = ΔEm = $Em_{f}$ -Em₀

Let's write the mechanical energy at each point

Initial

Em₀ = Ke = ½ k x²

Final

$Em_{f}$ = K + U = ½ m v² + mg y

Let's use Hooke's law to find compression

F = - k x

x = -F / k

x = 4400/1100

x = - 4 m

Let's write the energy equation

fr d = ½ m v² + mgy - ½ k x²

Let's clear the speed

v² = (fr d + ½ kx² - mg y) 2 / m

v² = (40 4.00 + ½ 1100 4² - 60.0 9.8 2.50) 2/60.0

v² = (160 + 8800 - 1470) / 30

v = √ (229.66)

v = 15.8 m/s

5 0

4 years ago

Read 2 more answers

There are four coils of wire being used as electromagnets. They all have the same size and are made up of the same material but

bonufazy [111]

Answer:

The coil with the maximum number of loops will produce the magnetic field with the maximum strength.

Explanation:

The magnetic field produced by a current-carrying coil at a point on the axis which is passing through its center and perpendicular to its plane is given by

$\rm B=\dfrac{\mu_o N I }{2}\ \dfrac{R^2}{(r^2+R^2)^{3/2}}.$

<em>where</em>,

$\mu_o$ = magnetic permeability of the free space.
N = number of loops of the coil.
I = current flowing through the coil.
R = radius of the coil.
r = distance of the point where the magnetic field is to be found from the center of the coil.

Now, it is given that all the four coils have the same size, means same radius R, same material, means same permeability for all the coils, and the same amount of current is passing through all the coils, means same current I.

The magnetic field of all the four coils is differing only due to the number of loops N.

Thus, the coil with the maximum number of loops N will produce the magnetic field with the maximum strength.

4 0

4 years ago

A solenoid is built with 870 turns uniformly distributed over a length of 0.390 m to produce a magnetic field of magnitude 1.00

Y_Kistochka [10]

Answer:

35.7 mA

Explanation:

The magnetic field inside a solenoid is given by:

$B=\mu_0 I n$ (1)