Crew members attempt to escape from a damaged submarine 110m below the surface. What force must be applied to a pop-out hatch, which is 1.7m by 0.8m, to push it out at that depth? Assume the density of the ocean water is 1024kg/m3 and the internal air pressure is at 1atm

Steps to formulate a logical, reasonable perspective to any situation are: gather information, identify problem, analyze the situation, consider assumptions, generate solutions, evaluate options, consider your values, make decision and monitor and adjust

Here are the six questions that you can apply to formulating a logical, reasonable perspective to any situation:

What are the issues that should be addressed?

What are the relevant facts and data related to this problem or issue?

What assumptions am I making about the problem or issue?

What are the possible solutions or outcomes, and what are the pros and cons of each?

What are my values and priorities related to this problem or issue?

What additional information do I need to make an informed decision or come to a reasonable conclusion?

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Answer:

1237 J

Explanation:

The work done by the hose on the balloon is the work done by a spring which is

W = 1/2k(x₀² - x₁²) where k = spring constant = 112 N/m, x₀ = 4.70 m and x₁ = 0 m.

Substituting the values of the variables into the equation, we have

W = 1/2k(x₀² - x₁²)

W = 1/2 × 112 N/m((4.70 m)² - (0 m)²)

W = 56 N/m(22.09 m² - 0 m²)

W = 56 N/m(22.09 m²)

W = 1237.04 J

W ≅ 1237 J

Answer:

Explanation:

A leaf appears green becuase of photosyithesis

Milk appears white because all the corols are being aborseb

words on the page are black because all colors are being refcted.

Answer:

920000

Explanation:

Each kg contains 1,000 grams

The direction of the vector, with a y component of 49.6 and -49.6, and an x component of 68.4, makes an angle of approximately 39.2 degrees with the positive x-axis.

To find the direction of the vector, we can use the inverse tangent (arctan) function. The arctan of the y component divided by the x component will give us the angle that the vector makes with the positive x-axis.

Calculate the angle using the arctan function:

For the y component of 49.6: arctan(49.6 / 68.4) = 38.7 degrees

For the y component of -49.6: arctan(-49.6 / 68.4) = -38.7 degrees

Since we have both positive and negative values for the y component, we need to consider the signs to determine the correct angle.

The positive y component of 49.6 corresponds to an angle of 38.7 degrees.

The negative y component of -49.6 corresponds to an angle of -38.7 degrees.

To determine the overall direction, we can take the average of the two angles: (38.7 + (-38.7)) / 2 = 0 degrees.

The direction of the vector, with a y component of 49.6 and -49.6, and an x component of 68.4, is approximately 0 degrees with the positive x-axis.

Therefore, the vector makes an angle of approximately 0 degrees with the x-axis.

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Answer:

concave

Explanation:

the middle of the concave lens is narrow and the edges are flattened.

–0.2 m/s2 I did it on edge 2020

Answer:

the answer is C

Explanation:

i got it wrong the first time because the answer above says -0.2 but its actually 0.2

i hope this helps

Heat transfer by radiation and convection causes the surface water of the pool to be warm which decreases with depth.

There are two heat transfer process responsible for variation in temperature of water at different depth of a pool, they include;

The surface of the water absorbs heat from the air and the sun. The heat from the sun is transferred to the pool through radiation.

The heat from the air is transferred to the pool through convection.

Thus, these two heat transfer processes  causes the surface water of the pool to be warm which decreases with depth.

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Answer:The bulb did not glow as the switch is not turned on which obstructs electric current to flow through it. Also, the battery in the figure has both terminals as positive. It should be one negative terminal and one positive terminal.Redrawn diagram is also given

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Answer:

Which feature is created when a block of rock dropped down in relation to the block of rock beside it?

Explanation:

Grabens drop down relative to adjacent blocks and create valleys. Horsts rise up relative to adjacent down-dropped blocks and become areas of higher topography.

Answer:

The magnitude of the friction force exerted on the box is 2.614 newtons.

Explanation:

Since the box is sliding on a rough horizontal floor, then it is decelerated solely by friction force due to the contact of the box with floor. The free body diagram of the box is presented herein as attachment. The equation of equilbrium for the box is:

\(\Sigma F = -f = m\cdot a\) (Eq. 1)

Where:

\(f\) - Kinetic friction force, measured in newtons.

\(m\) - Mass of the box, measured in kilograms.

\(a\) - Acceleration experimented by the box, measured in meters per square second.

By applying definitions of weight (\(W = m\cdot g\)) and uniform accelerated motion (\(v = v_{o}+a\cdot t\)), we expand the previous expression:

\(-f = \left(\frac{W}{g} \right)\cdot \left(\frac{v-v_{o}}{t}\right)\)

And the magnitude of the friction force exerted on the box is calculated by this formula:

\(f = -\left(\frac{W}{g} \right)\cdot \left(\frac{v-v_{o}}{t}\right)\) (Eq. 1b)

Where:

\(W\) - Weight, measured in newtons.

\(g\) - Gravitational acceleration, measured in meters per square second.

\(v_{o}\) - Initial speed, measured in meters per second.

\(v\) - Final speed, measured in meters per second.

\(t\) - Time, measured in seconds.

If we know that \(W = 52.4\,N\), \(g = 9.807\,\frac{m}{s^{2}}\), \(v_{o} = 1.37\,\frac{m}{s}\), \(v = 0\,\frac{m}{s}\) and \(t = 2.8\,s\), the magnitud of the kinetic friction force exerted on the box is:

\(f = -\left(\frac{52.4\,N}{9.807\,\frac{m}{s^{2}} } \right)\cdot \left(\frac{0\,\frac{m}{s}-1.37\,\frac{m}{s} }{2.8\,s} \right)\)

\(f = 2.614\,N\)

The magnitude of the friction force exerted on the box is 2.614 newtons.

Answer:

25

Explanation:

A projectile is fired at an upward angle and the speed of the object when it strikes the ground below will be 434.5 m/s.

A projectile is an object or particle that is thrown toward the surface of the Earth and moves along a curved route only under the influence of gravity. Galileo demonstrated that this curving path was a parabola, but in the unique situation where it is hurled straight up, it may also be a straight line.

According to the question,

\(h=v_0_yt+1/2gt^2\)

-155 m = (165 × sin 55°)t - 0.5(9.8)t²

-155 = 135.16t - 4.9 t²

4.9 t² - 135.16t - 155 = 0

t = 27.5 seconds.

Now, the speed of the object when it strikes the ground will be,

\(v_f=v_i+gt\)

= 165 + (9.8)(27.5)

\(v_f\) = 434.5 m/s.

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3.7996 seconds are needed to accelerate it.

acceleration is the rate of change in both speed and direction of velocity over time. When anything moves faster or slower in a straight line, it is said to have been accelerated. Because the direction is always shifting, motion on a circle accelerates even while the speed is constant.

So we have u= 0m/s, v=15m/s, s= 200m

So,2as= v^2-u^2

A= V^2 - U^2/2s

= 225/400

=0.5625 m/s^2

V=u + a*(t^2)

15=0+0.5625(t^2)

15-0.5625= t^2

=14.4375=t^2

root14.4375= root(t)

Time= 3.7996 seconds

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Answer:

D. Neptune, Uranus, Jupiter

Explanation:

Just took test

Answer:

Distance =60m, Time = 6s, Speed = ?

Speed = distance/time

= 60/6

=10m/s

Explanation:

Hope that this is helpful.

Have a nice day.

ANSWER

circuit breaker

EXPLANATION

A circuit breaker is an automatic switch that is activated to protect an electrical circuit when an sudden increase in the circuit's current appears. This could happen when there's an overload or a short circuit.

Answer:

If 2N = 30mm

Then ? =35mm

2N×(35mm÷30mm)

2N×1.167

= 2.33N

To get the additional force required, subtract 2N from 2.33N

2.33N - 2N

= 0.33N

∴ The additional force needed is 0.33N

Explanation:

With this question, we establish the principles of proportion. That is, if more less divides and vice versa. If 2N is stretching the material to 30mm, then how  more force will be needed to stretch the material to 35mm?

Answer:

D. 1.17 J

Explanation:

The potential energy stored in a spring is given by the following:

U = (K•x²)/2

U -> elastic Potential energy

K -> spring constant

x -> compression

So:

U = (53•0.21²)/2

U = 1.17

Answer1.17:

Explanation:

Answer:

A. convergent boundary without subduction

Explanation:

The convergent boundary pushes together and makes the plates burst in an upward motion and creates a mountain.

Answer:

never

Explanation:

The earthquake would occur 13 minutes before 10:05 a.m. which will be at 9.52 am.

The p-waves travel with a constant velocity of 7 km/s

The time can be calculated by using the formula

t = d / v

where

T1 =  10:05 a.m

d is the distance they take to travel from the epicenter

v is the speed of the p-waves

On average, the speed of p-waves is

v = 7 km/s

d = 5600 km (given)

Substituting the values in the formula;

t = d / v

t = 5600 ÷ 7

t = 800 seconds

Converting into minutes,

t = 800 ÷ 60

t = 13.3

≈ 13 mins

T1 -  13 mins = T2

10:05 - 13 mins = 9.52 am

It means the earthquake occurred prior 13 minutes, that is at 9.52 am.

Therefore, the earthquake occurred at 9.52 am.

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Answer:

3m/s

Explanation:

Given parameters:

Initial speed  = 2m/s

Acceleration  = 0.5m/s²

Time  = 2s

Unknown:

Final speed  = ?

Solution:

To solve this problem, we apply the right motion equation;

     V  = U + at

V is the final speed

U is the initial speed

a is the acceleration

t is the time

      V = 2  + (2 x 0.5)

      V = 2 + 1

      V = 3m/s

Answer:

It is reduced to 0.41L

Explanation:

The volume and temperature have a directly proportional relationship. So, we can write the following equation

Now, we need to convert the temperatures 40 °C and -15 °C to kelvin, so

40°C + 273.15 = 313.15 K

-15 °C + 273.15 = 258.15 K

Then, we can replace the values as

Solve for V2

Therefore, the volume is reduced from 0.5 L to 0.41 L

Answer:

A. It was changed into heat

Explanation:

Some of the kinetic energy the ball has when it strikes the floor is retained, but other is transformed to heat energy, so each time the ball bounces it loses a bit of its kinetic energy, and after several bounces it has so little of it left that it ceases to bounce.

Answer:

Separation of the Earth into layers (crust, mantle, inner core, and outer core) was largely caused by gravitational differentiation (separating different constituents at temperature where materials are liquid or plastic, owing to differences in density) early in Earth's history.

Explanation:

hoped it helped!!

Note that the procedures taken in the experiment set up shown are:

• Measurement of the length of the ramp

• Measurement of the angle of inclination of the ramp

• Measurement of the time taken by the marble to roll down the ramp

Factors that could cause the students collected data to have uncertainty or error in the measurement in the procedures described above are:

• Error due to parallax:, This is as a result of not properly focusing on the measuring device, thereby recording wrong values of the data measured

• Improper calibration, ,of measuring devices used:, This may be as a result of the calibration not starting from the zero point

• Incorrect recording, of measurements

• Changes in environmental condition,, such as temperature, may affect the accuracy of the measuring devices