one way to monitor global warming is to measure the average temperature of the ocean. researchers are doing this by measuring the time it takes sound pulses to travel underwater over large distances. at a depth of 1000 m, where ocean temperatures hold steady near 4∘c, the average sound speed is 1480m/s. it's known from laboratory measurements that the sound speed increases 4.0m/s for every 1.0∘c increase in temperature. in one experiment, where sounds generated near california are detected in the south pacific, the sound waves travel 7700 km .

Drive defensively. Simply said, aggressive driving accelerates the rate of battery drain in your electric vehicle.

Speed up. When feasible, try to maintain your speed under 60 mph.

An electric motor is a mechanical device that converts electrical energy into mechanical energy. The majority of electric motors function by producing torque that is applied to the motor shaft through the interaction of the motor's magnetic field and the electric current flowing through a wire winding.

to learn more about electric engines go to -

https://brainly.com/question/1049516

#SPJ4

The momentum change is 125440 kg.m/s.

We need to know about momentum to solve this problem. Momentum can be defined as the degree of difficulty to stop a moving object. It can be determined by

P = m . v

where P is momentum, m is mass and v is velocity.

Momentum also can be defined by kinetic energy

KE = 1/2 . m . v²

KE = P² / 2m

where KE is kinetic energy

From the question above, we know that:

m = 80 kg

h = 1 m

g = 9.8 m/s²

By conservation of energy, the initial kinetic energy is zero because of the person is in static condition. Hence, the initial momentum is

KEo = Po² / 2m

Po = 0 kgm/s

After the jump, the person will have maximum kinetic energy before landing which can be written

KE = PE

P² / 2m = m . g . h

P² = 2m² . 9.8 . 1

P² = 2.80² . 9.8 . 1

P² = 125440 kg.m/s

The momentum change is

ΔP = P - Po

ΔP = 125440 - 0

ΔP = 125440 kgm/s

Find more on momentum at: brainly.com/question/25121535

#SPJ4

In this scenario, skepticism is important to the progression of science as it led to collection of several complete data sets.

In the given scenario, the scientist is performing a experimental scientific method. It is based on observations, hypothesis and experiments. This method is done because of skepticism. Since she performs the experiment multiple times, it leads to collection of several complete data sets.

Skepticism is different from denial. Skepticism allows scientists to come to a logical conclusion with evidence that can be confirmed by others. If a person is in denial, they would simply reject any information that is different from their beliefs even though they were presented with evidence disproving their theory.

To know more about Skepticism

https://brainly.com/question/12560960

#SPJ1

The magnitude of force required to apply 130 n.m of torque to the bolt is 722.

f = magnitude of force

F = Vector force.

F =  f [(0 i + 4 j - 3 k)] (02 + 42 + (-3)2)) = (f/5) (4 j - 3 k)

r = 30 cm = 0.30 m

[tex]\tau[/tex] = Torque = 130

Using the formula

[tex]\tau[/tex] = r x F

130 = (0.30 j) x (f/5) (4 j - 3 k)

130 = (f/5) (-0.9 i)

f = 130 x 5 /0.9 = 722

Hence, 722 is the magnitude of the force needed to supply 130 n.m of torque to the bolt.

To learn more about magnitude of force, visit:

https://brainly.com/question/22260425

#SPJ4

The greatest speed pilot can reach with an acceleration of 5g before he blacks out is 240 m/s.

The acceleration due to gravity is g.

g = 9.8 m/s²

The acceleration of the jet is,

[tex]Acceleration = Mass \times Gravity[/tex]

[tex]a = m \times g[/tex]

[tex]a = 5 \times 9.8[/tex]

[tex]a = 49 \: m/s ^{2} [/tex]

The acceleration of the jet is 49 m/s².

Let the speed of sound be v.

[tex]v = 331 \: m/s[/tex]

Let the initial velocity of the jet be

[tex]Let \: the \: initial \: velocity \: of \: the \: jet \: [/tex]

[tex]be \: v _i.[/tex]

[tex]v _i = 0[/tex]

The time at which the pilot will black out with 49 m/s² acceleration = 4.9 s

Let the time taken to reach Mach 3 be t.

Then the final velocity will be,

[tex]v _f = 3 \times v[/tex]

[tex]v _f = 3 \times 331[/tex]

[tex]v _f = 993 \: m/s[/tex]

[tex]v _f = v _i + at[/tex]

[tex]993 = 0 + (49)t[/tex]

[tex]t = 20.26 \: s[/tex]

Thus, the time taken to reach Mach 3 is 20.26 s.it is greater than the time interval at which the pilot will black out. So the pilot will black out.

The greatest speed pilot can reach with an acceleration of 5g before he blacks out is,

[tex]v _f = 0 +( 49 \times 4.9)[/tex]

[tex]v _f = 240.1 \: m/s[/tex]

Therefore, the greatest speed pilot can reach with an acceleration of 5g before he blacks out is 240 m/s.

To know more about velocity, refer to the below link:

https://brainly.com/question/24135686

#SPJ4

The average speed is 22 m/s. so, the value is less than 23.0 m/s.

Given:

Time  T1 = 16.0 m/s, 10.0 min

Time  T2 = 28.0 m/s, 10.0 min.

Average speed = distance / time ;

v =  [  16×10 ×60  + 28×10×60  ]  /  [ 10×60 + 10×60  ]

v = 22 m /s

The Actual Speed is the calculated velocity at which the axis is presently moving, as computed from the alternate within side the Transducer Counts repute register. The Actual Speed is in function devices according to second.

Speed has the dimensions of distance divided via way of means of time. The SI unit of velocity is the metre in keeping with the second (m/s), however, the maximum not unusual place unit of velocity in regular utilization is the kilometre in keeping with the hour (km/h) or, within side the US and the UK, miles in keeping with the hour (mph). For air and marine travel, the knot is normally used.

To learn more about Actual Speed, visit:

https://brainly.com/question/3267354

#SPJ4

For the four forces to be balanced, thrust must be equal to drag, and lift must equal weight. When this happens we say the airplane is cruising.

The force that resists an aircraft's motion through the air is called drag. Every component of the aircraft produces drag, including the engines. A mechanical force is a drag. It is created when a solid body interacts with and contacts a fluid (liquid or gas). It is not produced by a force field in the sense of a gravitational field or an electromagnetic field, in which two objects can interact without coming into touch with one another.

The solid body needs to be in touch with the fluid for drag to be produced. There won't be any drag if there is no fluid. The velocity difference between a solid object and a fluid causes drag.

To learn more about drag please visit-
https://brainly.com/question/12774964
#SPJ4

half-life of the isotope br3574 is 25.4 minute The amount of isotope remained after 90min = 0.01g

number of periods= time/ half life

= 90/25,=3.6

so at each time 4/3.6=1.1, 1.1/7.2= 0.15 and 0.15/10.8=0.01g

The period of time it takes for one-half of a radioactive isotope to decay is known as the half-life. A given radioactive isotope's half-life is constant; it is unaffected by external factors and independent of the isotope's starting concentration.

or

Half-life is the length of time it takes for a radioactive element to decay to half of its initial value. This suggests that a source's activity has a half-life when it takes time for it to decrease to half its initial value

to learn more about Half-life:

https://brainly.com/question/24710827

#SPJ4

The average acceleration is -7.09 m/s² and the stopping time is 3.87 sec.

Given,

Final velocity, v = 0

Initial velocity, u = 62 mph

Converting mph to km/h and to m/s, we get

u = 99.2 km/h

Or, u = 27.5 m/s

Displacement, s = 175 feet

Or, s = 53.3 meter

By using the third equation of motion, we get

v² - u² = 2as

0 - (27.5)² = 2 × a × 53.3

Or, acceleration(a) = -7.09 m/s²

Now, by the first equation of motion,

v = u + at

Or, - u = at

-27.5 = -7.09 × t

Or, t = 27.5/7.09

t = 3.87 sec

The stopping time (t) is 3.87 sec

Hence, the average acceleration is -7.09 m/s², and the time is 3.87 sec.

To learn more about acceleration and time, visit: brainly.com/question/25007278

#SPJ4

If the volume is held constant, a process is said to be isochoric (or iso-volumetric). The work that the system performs in any isochoric process is always zero.

In thermodynamics, a condition in which a system's volume doesn't change is referred to as an isochoric process. A pressure volume diagram serves as the model for this operation (PV diagram). Consequently, Q1 / Q2 = T1 / T2 or Q1 / Q2 = Q2 / T2 as these two equations are equivalent. The term "lower amount of heat" refers to the proportion of heat to temperature. The total of the reduced amount of heat is therefore zero for the Carnot heat engine. As a result, we can see that in an isochoric process, the volume is constant, and no work is being done. The gas's intrinsic energy is the only thing that changes.

Learn more about isochoric process here-

https://brainly.com/question/13261035

#SPJ4

The predicted  decrease in level of employment percentage is calculated as 6.81%

Elasticity of demand for labor = % Change in Demand for Labor/ % Change in wage

Elasticity of demand for labor = 0.15

% Change in wage = (16-11)/11×100 = 45.45%

Elasticity of demand for labor = % Change in Demand for Labor/ % Change in wage

0.15 = % Change in Demand for Labor/45.45%

% Change in Demand for Labor =   45.45%×0.15

                                                                 = 6.81%

What is price elasticity of demand means?

Price elasticity of demand is that the ratio of the percentage change in quantity demanded of a product to the percentage change in price. Economists employ it to know how supply and demand change when a product's price changes

Why is price elasticity of demand important?

Price elasticity is that the measure of the market's response to price changes. Elasticity is vital to pricing decisions because it helps us understand whether raising prices or lowering prices will enable us to achieve our pricing objectives.

Learn more about price elasticity of demand:

brainly.com/question/5078326

#SPJ4

Answer:

The prospect of giving a presentation fills some people with dread, while others relish the experience. However you feel, presenting your work to an audience is a vital part of professional life for researchers and academics. Presentations are a great way to speak directly to people who are interested in your field of study, to gather ideas to push your projects forward, and to make valuable personal connections.

Answer:

As mentioned before middle thing nucleus and blue things with +1 charge (positive) [I am talking about the key] are protons anything else that you need help with?

The speed with which the train reaches the rock slide is 19.36 m/s

This is defined as the rate of change of velocity which time. It is expressed as

a = (v – u) / t

Where

The initial velocity of the train can be obtained as illustrated below:

–1.6 = (0 – u) / 12.1

Cross multiply

0 – u = –1.6 × 12.1

– u = –19.36

Divide both sides by –1

u = –19.36 / –1

u = 19.36 m/s

Thus, the train uses 19.36 m/s to reach the rock slide

Learn more about acceleration:

https://brainly.com/question/491732

#SPJ1

Answer:

Energy cannot be created or destroyed

The total amount of energy remains the same even though it may change forms. The amount of energy before and after any energy transformations remain the same because energy cannot be created or destroyed.

Explanation:

Addition of vectors can be done using the Pythagorean theorem for perpendicular vectors and the Parallelogram law of vector addition for non-perpendicular vectors.

The head of the first vector must meet the tail of the second vector in order for the two vectors to be added together, according to the triangle law of vector addition. We may thus acquire the resulting sum vector by connecting the head of the second vector to the tail of the first vector.

Addition of vectors which are perpendicular is done using the Pythagorean theorem,

[tex]C^2 = A^2 + B^2\\C = \sqrt{A^2 + B^2}[/tex]

Addition of vectors not perpendicular to each other is done using the Parallelogram law of vector addition:

[tex]R = \sqrt{A^2 + B^2 + 2AB cos\theta}[/tex]

Learn more about Addition of vectors here:

https://brainly.com/question/26056717

#SPJ9

The velocity of the airplane will be 301.85 meters per second.

The velocity of the airplane is given as,

v = m√(γRT)

Where γ is the polytropic index (1.14), R gas constant, and T is the temperature.

An airplane is flying at a standard altitude of 5 km. A pitot tube mounted at the nose measures pressure of 0.957 bar.

From the table, the static pressure (p) and static temperature (T) will be 54019.91 Pa and 255.5 K.

Then the static density is given as,

P = p / RT

P = 54019.91 / (287 x 255.5)

P = 0.737 kg / m³

We know that the formula

[tex]\begin{aligned} \left ( \dfrac{P_o}{P} \right )^{\frac{\gamma -1}{\gamma }} &= 1 + \dfrac{\gamma - 1}{2}m^2\\\\\left ( \dfrac{0.957 \times 10^5}{54019.91} \right )^{\frac{1.4 -1}{1.4}} &= 1 + \dfrac{1.4- 1}{2}m^2\\ \end{aligned}[/tex]

On simplifying, we have

m = 0.9421 kg

Then the velocity of the airplane is given as

v = 0.9421 × √(1.4 × 287 × 255.5)

v = 301.85 m/s

More about the velocity link is given below.

https://brainly.com/question/15179833

#SPJ4

The velocity of the body will be 30.6 m/s.

The object's highest vertical point during its trajectory is at its maximum height. Before it reaches the highest point, the item is flying upward; once it reaches that point, it is falling.

The velocity of the body is 60 m/s when thrown vertically upwards.

The maximum height attained by the body after 3 seconds.

Then, the initial velocity of the body is :

u = 60 m/s

t = 3 seconds

Then, using the equation of motion:

v = u - gt , the negative sign indicates that the body is moving opposite to gravity.

Therefore,

v = 60 - (9.8)(3)

v = 60 - 29.4

v = 30.6 m/s

Hence, the final velocity of the body when thrown upwards before it comes to stop is 30.6 m/s.

Learn more about velocity here:

https://brainly.com/question/80295?source=archive

#SPJ9

The minimum diameter of a steel wire if it is to support a mass of 80 kg is 1.41 * 10⁻³ m.

The minimum diameter, d of the steel wire can be calculated thus:

α = 5.0 × 10⁸ Pa.

mass, m = 80 kg

Force = 80 * 98 = 784 N

Area = force/α

area = 784/5.0 × 10⁸

area = 1.57 * 10⁻⁶

Area = πd²/4

d = √(4 * area/π)

d = √(4 *  1.57 * 10⁻⁶ * 7/22)

diameter = 1.41 * 10⁻³ m

Learn more about elastic limit at: https://brainly.com/question/18793028

#SPJ1

Note that the complete question is given below:

What is the minimum diameter of a steel wire if it is to support a mass of 80 kg? The elastic limit of steel is 5.0 × 10⁸ Pa.

The power output would be 981 watts.

Metered energy for one metering interval, measured in kWh per meter in interval, multiplied by the number of metering intervals in an hour equals power output.

The average rate of electric energy delivery during the course of one metering interval, expressed as an hourly rate of delivery in kWh, is the outcome.

The maximum power, stated in kW, that a charging station, pool, or shore-side energy supply system is theoretically capable of giving to a linked car or vessel is the installation’s “power output.”

Work is the process of transferring energy into an object to move it in some way.

Energy is the term used to describe the capacity to accomplish tasks. Acted upon

60 kg x 9.81 = 588.6N

100m/min = 5/3 m/s

Power= v.w

= 588.6 x 5/3

=981 watts

To know more about power output, visit:

https://brainly.com/question/14818189

#SPJ4

Answer:

C. The total distance walked is about 59 meters more than the student’s displacement.

Explanation:

The total distance walked is equal to the magnitude of the student’s displacement is the correct option. The correct answer is (D).

The student walked 100 meters North.

Then, the student walked 100 meters West.

Total distance walked = √(North distance)² + (West distance)²

Total distance walked = √(100)² + (100)²

Total distance walked = √(10000 + 10000)

Total distance walked = √20000

Total distance walked = 141.42 meters

Displacement = √(North distance)² + (West distance)²

Displacement = √(100)² + (100)²

Displacement = √(10000 + 10000)

Displacement = √20000

Displacement = 141.42 meters

The student's total distance walked is 141.42 meters, and their displacement is also 141.42 meters.

The total distance walked to the displacement:

Total distance walked = 141.42 meters

Displacement = 141.42 meters

So, the correct option is D) The total distance walked is equal to the magnitude of the student’s displacement.

To know more about displacement:

https://brainly.com/question/29769926

#SPJ3

The acceleration of the bicyclist is 3.35 m / s². It takes the bicyclist 1.64 s to travel the 30 meters

We know that,

a = ( v - u ) / t

s = ut + 1 / 2 at²

where,

a = Acceleration

v = Final velocity

u = Initial velocity

t = Time taken

s = Distance travelled

Given that,

u = 15.6 m / s

v = 21.1 m / s

s = 30 m

a = ( 21.1 - 15.6 ) / t = 5.5 / t

s = ut + 1 / 2 at²

30 = 15.6 t + 1 / 2 ( 5.5 t )

30 = 15.6 t + 2.75 t

t = 30 / 18.35

t = 1.64 s

a = 5.5 / t = 5.5 / 1.64

a = 3.35 m / s²

Equations of motion are used to describe the position of an object using the motion of the object with respect to time. It is done using speed, acceleration, distance and time.

Therefore,

a) The acceleration of the bicyclist is 3.35 m / s²

b) Time taken by the bicyclist =

To know more about Equations of motion

https://brainly.com/question/14355103

#SPJ1

90 caloric content of 100g of fruit salad containing 20g of apple, 25g of strawberry, 15g of grapes, 30g of banana, and 10g of honey.

energy are the strength that a meals or beverage includes.

Find out more information about Calories.

https://brainly.com/question/22374134?referrer=searchResults

#SPJ4

Answer: A frame of reference is a reference point combined with a set of directions. A frame of reference is similar to the idea of a reference point. A frame of reference is defined as a reference point combined with a set of directions. For example, a boy is standing still inside a train as it pulls out of a station.

Explanation: hope this helps!!!!

The direct variation equation is I = kh and it will take 42.1 hours for the restaurant to earn Php 1,000,000.

The direct variation equation has the form y = kx, where k is the constant proportionality. It is a linear equation with two variables.

In an 8-hour period, Jollibee takes in Php 190000.

The direct variation equation is given as y = kx, where y is directly proportional to x.

Hours worked (h) directly affect income (I), where k is the variational constant.

Therefore,

I = k × h

190000 = k × (8)

k = 23750 / 190000

Now, when the restaurant earns Php 1,000,000.

Therefore, using the direct variation equation:

Income = variable constant × number of hours

I = k × h

1,000,000 = (23750) × h

h = 1,000,000 / 23750

h = 42.1 hours

Learn about direct variation equation here:

https://brainly.com/question/28443091

#SPJ9

(a), (b), and (C) have the same resultant.

In two-dimensional,

When a body moves in the east direction or positive x-axis then is denoted by [tex]\hat{i}[/tex] and when the body moves in the north direction or positive y-axis then is denoted by [tex]\hat{j}[/tex].

For option (a),

2m east, 3m north, 4m west

Let's say the initial position is origin then,

[tex]2\hat{i} + 3\hat{j} - 4\hat{i} = - 2\hat{i} + 3\hat{j}[/tex]

Then the displacement is:

= √ [ (-2)² + (3)² ]

= √[ 4 + 9] = √13 m

For (b),

2m north, 3m west, 4m east

[tex]2\hat{j} - 3\hat{i} + 4\hat{i} = \hat{i} + 2\hat{j}[/tex]

The displacement will be:

= √[ (1)² + (2)² ]

= √5 m

For (c),

2m east, 4m west, 3m north

Then,

[tex]2\hat{i} - 4\hat{i} + 3\hat{j} = -2\hat{i} + 3\hat{j}[/tex]

The resultant of displacement is:

= √[ (-2)² + (3)² ]

= √[ 4 + 9]

= √13 m

For (d),

3m north, 2m east, 4m west​

Then,

[tex]3\hat{j} + 2\hat{i} - 4\hat{i} = -2\hat{i} + 3\hat{j}[/tex]

Then, the resultant of displacement will be:

= √[ (-2)² + (3)² ]

= √[ 4 + 9]

= √13 m

Hence (a), (c), and (d) have the same resultant.

Learn more about displacement here:

https://brainly.com/question/321442

#SPJ9

The complete question is mentioned below:

two or more of the following sets of displacement, when carried out in the order shown, have the same resultant, which are they? (a) 2m east, 3m north, 4m west (b) 2m north, 3m west, 4m east (c) 2m east, 4m west, 3m north (d) 3m north, 2m east, 4m west​

The formation and evolution of discs can be better understood by performing kinematic studies of disc galaxies utilizing specific Milky Way stars or statistical analyses of global disc kinematics across time.

Older stars are kinematically hotter at birth and get hotter as they grow older (the disc settles over time in an “upside-down” formation scenario).

The disc also expands from the inside out, and radial mixing has resulted in the presence of many of the older stars in the current solar neighborhood.

We show that the model used to explain the general decrease in velocity dispersion observed in disc galaxies from z 2-3 to the present day, in which the disc evolves in quasi-stable equilibrium and the ISM velocity dispersion decreases over time due to a decreasing gas fraction, can also be used to explain the evolution of birth in h277.

Our findings connect local measurements of the Milky Way’s AVR with those of high-z disc galaxies’ observed kinematics.

To know more about stellar, visit:

https://brainly.com/question/12790561

#SPJ4

The absolute pressure of the air inside the cylinder is 16 lbf/in

1.3psig.

A straightforward idea is pressure—the measurement of force in a certain space.

There are several approaches of comprehending the strain, nevertheless, depending on the query.

Here are some tips for differentiating pressure measurement types and units when describing when and why such pressure measurements are employed.

Calculate the mass of the piston by applying the equilibrium condition.

∑F_y=0

p_(air)A_(piston)- p_(atm)A_(piston)-m_(piston)g=0

(p_(air)-p_(atm))A_(piston)-m_(piston)g=0

m_(piston)=(p_(air)-p_(atm))A_(piston)/g ______(1)

Calculate the area of the piston,

A_piston= πD^2/4

=π×D^2/4

=π×6^2/4

=28.274 in^2

By substituting the value in m_(piston)=(p_(air)-p_(atm))A_(piston)/g

=(16.14.7 lbf/in.^2)(28.274 in.^2)/32.2 ft/s^2(32.2 ft/s^2/1lbf)

=36.756 lbm

b)

Calculate the gage pressure if the air,

p_(gage) = p_(abs)-p_(atm)

p_(gage)=16-14.7

=1.3psig

To learn more about atmosphere exerts a pressure refer the link:

https://brainly.com/question/13927530

#SPJ9