5) The average speed of a sailing ship in the 1700's was about 15m/s. It would take a letter
about 3 months to travel from England to the American colonies. Based on this information,
what distance would the letter have traveled to reach America from England?

A wave, in scientific terms, is a disturbance or oscillation that transfers energy through matter or space without transferring mass.

In science, a wave refers to a disturbance or oscillation that travels through matter or space, transferring energy without causing any net movement of the particles within the medium.

Waves can be classified into two types: mechanical and electromagnetic. Mechanical waves, such as sound or ocean waves, require a medium (like air, water, or a solid) to propagate.

Electromagnetic waves, such as light, radio, and microwaves, can travel through a vacuum, like outer space. Waves are characterized by their amplitude, wavelength, frequency, and speed, which determine their energy and propagation characteristics.

For more such questions on wave, click on:

https://brainly.com/question/13874687

#SPJ11

Answer:

4.8mph

Explanation:

Speed= Distance/time

Speed= 26.2/5.5

= 4.76mph

( To the nearest tenth ) = 4.8mph

Answer:

38.7 mph

Explanation:

I just add all the numbers together then divided them by 4, which is the amount of numbers you gave.

When two magnets are close to each other, the magnets experience a repulsive or attractive force. The magnetic field strength is affected by the orientation of the magnet.

The direction in which the bar magnet obtains its maximum magnetic property is called the orientation of the magnet. The magnetic field strength depends on the orientation of the magnet.

The magnetic field lines emerge from the north pole and end in the south pole. When the two bar magnets of opposite poles face each other, an attractive force will be produced and magnetic field strength increases.

When the bar magnet of the same poles faces each other, repulsive force will produce and magnetic field strength decreases. Hence from the orientation of the bar magnet,  the magnetic field strength gets affected.

To learn more about the orientation of bar magnets:

https://brainly.com/question/12784598

#SPJ1

Answer:

a = 2.94 m/s²

Explanation:

In order for the cup not to slip, the unbalanced force on cup must be equal to the frictional force:

Unbalanced Force = Frictional Force

ma = μR = μW

ma = μmg

a = μg

where,

a = maximum acceleration for the cup not to slip = ?

μ = coefficient of static friction = 0.3

g = acceleration due to gravity = 9.8 m/s²

Therefore,

a = (0.3)(9.8 m/s²)

a = 2.94 m/s²

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.

Learn more about earthquakes from the given link.

https://brainly.com/question/25843505

The vectors addition permits locating the perfect result for the sum of the two vectors in option B).  See attached and the vector is directed to the right and up.

Vector addition is the operation of adding or extra vectors together into a vector sum. The so-known as parallelogram regulation gives the rule for vector addition of or greater vectors. for two vectors and, the vector sum is received via placing them head to tail and drawing the vector from the loose tail to the unfastened head.

A vector is an amount or phenomenon that has impartial residences: importance and direction. The time period also denotes the mathematical or geometrical representation of the sort of quantity. Examples of vectors in nature are velocity, momentum, force, electromagnetic fields, and weight.

Vectors are used in technological know-how to describe something that has a direction and a magnitude. they're commonly drawn as pointed arrows, the length of which represents the vector's importance

Disclaimer: your question is incomplete, please see below for the complete question.

The image shows the complete question.

Which vector is the sum of vectors à and b?

Learn more about vectors here:- https://brainly.com/question/25705666

#SPJ9

1.94 m will be the distance (position) at t= 0.2 s.

Velocity=970 cm/s

distance=?

time=0.2

distance=Velocity×time

distance=970 cm/s × 0.2

distance=194 cm=  1.94 m

Distance is the length between two locations or things, independent of direction. Since distance is a scalar property, it only takes into consideration the total magnitude and ignores the start and finish positions. Since distance is a scalar attribute, it can only have a positive or zero value; it cannot have a negative value. The most common unit of measurement for distance is the meter (m), while larger distances can also be stated in kilometers (km), while smaller distances can be expressed in centimeters (cm) or millimeters (mm). When calculating distance, the letter D is the conventional way to represent the distance traveled.

To know more about  distance visit : https://brainly.com/question/18295976

#SPJ9

The power needed to boil the water is divided by the element's power output, and the result is multiplied by 100 to get the efficiency of the kettle as a percentage. The answer is 79 %.

We are informed that

Electric kettle power is 1 kW.

Electric kettle voltage is 230 V.

The time it takes the kettle to bring the water to boiling point is 7.5 minutes.

1 kg = mass of water.

Heat generated equals V x I x t + Pt.

generated heat = 1000 W x 7.5 x 60

Heat absorbed equals (100 - 15) x 1 x 4200 = 4200 x 85

Efficiency is determined by multiplying the heat produced by the heat absorbed by 100.

= 4.2 x 85 x 10^3 / 4.5 x 10^5 x 100

= 357 / 4.5 = 79 %

To learn more about efficiency of electric kettle refer

https://brainly.com/question/29657817

#SPJ1

P(W) = E(J) / t(s)

50/25=2

Answer:

65 miles per hour

Explanation:

Speed= Distance/Time

Following this formula, we just need to insert the values.

The distance is 125 miles and the time is 2 hours

125=2=65

65 miles per hour

The speed of the car was exactly 125 mi per 2 hours.

In a more familiar unit,  125mi/2hr = 62.5 mi/hr.

The difference between the highest frequency heard by a student in the classroom and the initial frequency of the sound generator is =582.5 Hz and 619.2 Hz

F(s) = 600 Hz, the generator's frequency

The rope's length is r = 1 m.

rotating frequency, w = 100 rpm

First, we determine the generator's speed, v (g)

v(g) = r.w

However, it should be remembered that we must convert the whirling speed from rpm to rad/s.

100 rpm is 100*2/60 rad/s.

100 rpm = 200π/60

100 rpm = 620.4 / 60

10.47 rad/s for 100 rpm.

Now, we employ this to determine the generator's speed.

v(g) = r.w

v(g) = 1 * 10.47

v(g) = 10.47 m/s

The frequency is estimated when approaching the generator as

F(a) = F(s) / [(v(g)/v) - 1)]

F(a) = 600 / [1 - (10.47/343)]

F(a) = 600 / 0.969

F(a) = 619.2 Hz

On the other hand, the frequency of the retreating generator is

F(r)=F(s)/[1 + (v(g)/v)]

F(r) = 600 / [1 + (10.47/343)]

F(r) = 600 / 1.030

F(r) = 582.5 Hz

The highest and lowest frequencies are therefore 619.2 Hz and 582.5 Hz, respectively.

To know more about Doppler effect  visit:-

https://brainly.com/question/29586032

#SPJ4

Answer:

telekinesis moving things with your mind

Answer:

when you turn down the volume on the television, you reduce the intensity carried by the sound waves, so you also reduce their amplitude.

Explanation:

When you turn down the volume of the television, you are actually reducing the intensity of the sound wave, which is directly proportional to the amplitude of the sound. Amplitude is height of the sound wave.

Therefore, when you turn down the volume on the television, you reduce the intensity carried by the sound waves, so you also reduce their amplitude.

Answer:

i. 43.5 mH ii.  16 Ω. In phasor form Z = (8.33 + j13.66) Ω iii 58.64°

Explanation:

i. The resistance , R of the non-inductive load R = 125 V/15 A = 8.33 Ω

The reactance X of the inductor is X = 2πfL where f = frequency = 50 Hz.

So, x = 2π(50)L = 100πL Ω = 314.16L Ω

Since the current is the same when the 240 V supply is applied, then

the impedance Z = √(R² + X²) = 240 V/15 A

√(R² + X²) = 16 Ω

8.33² + X² = 16²

69.3889 + X² = 256

X² = 256 - 69.3889

X² = 186.6111

X = √186.6111

X = 13.66 Ω

Since X = 314.16L = 13.66 Ω

L = 13.66/314.16

= 0.0435 H

= 43.5 mH

ii. Since the same current is supplied in both circuits, the impedance Z of the circuit is Z = 240 V/15 A = 16 Ω.

So in phasor form Z = (8.33 + j13.66) Ω

iii. The phase difference θ between the current and voltage is  

θ = tan⁻¹X/R

= tan⁻¹(314.16L/R)

= tan⁻¹(314.16 × 0.0435 H/8.33 Ω)

= tan⁻¹(13.66/8.33)

= tan⁻¹(1.6406)

= 58.64°

Based on the description provided, the diagram that correctly illustrates the movement of the ball from the child's perspective is C.

Considering the child is rotating and he or she catches the ball some seconds after throwing it, it can be concluded the trajectory is closed, which means the diagram should show the ball returning to the initial point.

Based on the above, diagrams A and B are not possible because the ball is not retruning to the child.

Considering the child is moving at a constant speed and in a defined circular area, it is expected the movement resembles a circle; however as the ball will be affected by a leftward force in case the child is moving clockwise the movement will not be exactly a circle. Based on the above, the best option is diagram C.

Learn more about diagrams in: https://brainly.com/question/11729094
#SPJ1

Answer:

A transformer is a passive electrical device that transfers electrical energy from one electrical circuit to another, or multiple circuits.

Explanation:

Hope it helps

Answer:

A transformer with eletric abilities.

Explanation:

When reading the simile "Bolt runs as fast as lightning," the most appropriate visual interpretation would be that "Bolt runs very fast."

This simile compares Bolt's speed to that of lightning, which is known for its incredible swiftness. The intention is to emphasize Bolt's exceptional speed by equating it to the rapid movement of lightning.

While the simile highlights Bolt's remarkable speed, it does not specify the manner in which he runs or the impact of each step. Therefore, the options suggesting Bolt runs in a straight line, in a wavy manner, or that each step produces thunder are not directly implied by the simile itself. These additional details go beyond the comparison of speed and introduce elements that are not explicitly mentioned.

Hence, the most accurate interpretation based solely on the simile is that Bolt runs very fast, comparable to the speed of lightning.

Know more about the simile here:
https://brainly.com/question/1443894

#SPJ8

The mass of the object is approximately 0.457 kg.

The mass of the object attached to the trolley can be calculated using the principle of conservation of momentum. Since the two trolleys couple together and move as a single system after the collision, the total momentum before and after the collision should be the same. Given the mass of one trolley is 0.80 kg and the initial speed is 1.1 m/s, the momentum before the collision is 0.80 kg * 1.1 m/s = 0.88 kg·m/s. After the collision, the total mass is the sum of the two trolleys, and the final speed is 0.70 m/s.

Using the momentum equation, the mass of the object can be calculated as follows:

Total momentum before collision = Total momentum after collision

0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s

Solving for the mass of the object, we get:

0.88 kg·m/s = (0.80 kg + mass of the object) * 0.70 m/s

0.88 kg·m/s = 0.56 kg + 0.70 kg * mass of the object

0.88 kg·m/s - 0.56 kg = 0.70 kg * mass of the object

0.32 kg = 0.70 kg * mass of the object

Dividing both sides by 0.70 kg, we find:

mass of the object = 0.32 kg / 0.70 kg = 0.457 kg

The two trolleys collide and couple together, the total momentum before the collision is equal to the total momentum after the collision according to the principle of conservation of momentum.

The momentum of an object is defined as the product of its mass and velocity. In this case, the mass of one trolley is known (0.80 kg) and the initial speed is given (1.1 m/s), allowing us to calculate the momentum before the collision.

After the collision, the two trolleys move together at a new speed (0.70 m/s). By setting the initial momentum equal to the final momentum and solving for the unknown mass of the object, we can find its value.

In the calculation, we subtract the masses of the two trolleys from the total mass in order to isolate the mass of the object.

Dividing the difference in momentum by the product of the known mass and the new speed, we obtain the mass of the object. In this case, the mass of the object is approximately 0.457 kg.

for such more questions on  mass

https://brainly.com/question/86444

#SPJ8

Answer:

See below

Explanation:

rho = R A/l     R = resistance   A = cross sectional area l = length

4.44×\(10^{9}\) kg/s is the rate at which the sun mass is decreasing.

The Sun radiates energy through a process called nuclear fusion, where hydrogen atoms combine to form helium, releasing a tremendous amount of energy in the process. According to Einstein's mass-energy equivalence principle (E=mc²), this energy release corresponds to a decrease in mass.

To calculate the rate at which the Sun's mass is decreasing, we can use the formula ΔE = Δmc², where ΔE is the change in energy, Δm is the change in mass, and c is the speed of light.

Given that the Sun radiates energy at a rate of 4×10^26 W, we can substitute this value into the equation as ΔE and solve for Δm.

ΔE = 4×10^26 W

c = 3×10^8 m/s (speed of light)

Using the equation ΔE = Δmc² and rearranging it, we get Δm = ΔE / c².

Substituting the values, we have:

Δm = (4×10^26 W) / (3×10^8 m/s)²

Evaluating this expression, we find that the rate at which the Sun's mass is decreasing is approximately 4.44×10^9 kg/s.

This calculation demonstrates that the Sun's mass is gradually decreasing as it continuously radiates energy into space, primarily through the process of nuclear fusion in its core.

Know more about Einstein's mass-energy equivalence principle here:
https://brainly.com/question/3171044

#SPJ8

Answer:

The number of images formed by two adjacent plane mirrors depends on the angle between the mirror. If (in degrees) is angle between the plane mirrors then number of images are given by, n = 360 θ − 1.

The force 'F' on the block is equal to  120 N. Therefore, option D is correct.

The frictional force is described as the force formed by two surfaces that slide against each other. The frictional force is affected by the texture of the surface, the angle, as well as the position of the object.

Friction can be defined as the force that resists motion when one surface comes in contact with the other surface. The mechanical advantage will reduce by the force of friction therefore the ratio of output to input will be reduced because of friction.

The formula of the frictional force can be represented as:

F = μmg

Given, the weight of the block, W =  500 N

W = mg

500 = m × 9.8

m = 51 Kg

The acceleration of the block, a = 0.4 m/s²

The frictional force of the block, F = 100 N

F(net) = F (applied) - F (frictional)

ma = F - 100

51 ×0.4 = F - 100

F = 100 + 20.4

F = 120.4 N

Learn more about frictional force, here:

brainly.com/question/29308257

#SPJ2

Pitch 0.396, solid height 12 turns, number of active turns 1.755 Spring rate is 1.08N/3, force is 81.9N and the stress in the spring is 3.85Kspi

The term "force" has a specific meaning in science. At this point, describing a force as a push or a pull is perfectly appropriate. A strength is not something an item "has in it" or that it "contains." One thing experiences a force from another. There are both living things and non-living objects with in concept of a force.

Force: Force is just a physical factor that alters or has the potential to alter an object's state of motion or motion and its form. Newton is the SI unit of force.

(a) Pitch, solid height, number of active turns

\(N_{t}\)= 12.5 coils

pitch = 4.75/12

=0.396

The ends are squared  along 1/4 turns on each end

\(N_{a}\)= 12.5-0.5

=12 turns

Solid height: solid stack is 13 wire diameter

\(L_{s}\)= 13(0.135) = 1.755

(b) Spring rate

\(K=\frac{d^{2}c }{8D^{3}N_{a} }\)

\(= \frac{3.4^{4}*78.6*10^{3} }{8*46.6^{3}*12 }\)

\(= 1.08 N/3\\\) or 6.08 uof/in

(c) Force

\(F_{v}=K(L_{0}- L_{1} =1.08 (12.-44.2)\\ =81.9N or 18.2 Lbf\)

(d) c= D/d = 1.865/0.135 = 13.81

\(K_{b}=\frac{4(13.81)+2}{4(13.81)-3} = 1.096\)

\(T_{s}-K_{B} = \frac{8F_{D} }{nd^{3} } = 1.096 * \frac{8(18.2)(1.865)}{(0.135^{3} )}=3.85 Kpsi\)

To know more about force visit:

https://brainly.com/question/13191643

#SPJ4

Answer:

D i think

Explanation:

Heavier objects (objects with more mass) are more difficult to move and stop.

Answer:

Increasing the mass of the object (option D in the list of answers)

Explanation:

Recall that F = m x a

therefore, if the mass increases, the force increases

Answer:

\(v=\dfrac{1200}{t}\ m/s\)

Explanation:

Given that,

The car traveled a total of 1,200 meters during this test.

We need to find the average speed of the car. The average speed of the car is given by total distance covered divided by the time taken. So,

\(v=\dfrac{1200}{t}\ m/s\)

But putting the value of t we can find the average speed of the car.

Answer:

Boiling water is an example of a physical change and not a chemical change because the water vapor still has the same molecular structure as liquid water.

(credits to lumenlearning)

Explanation:

Answer:

boiling of water forms steam which can be further condensed to form water again, thus this change is a temporary and reversible change

Answer:

See answers below

Explanation:

vf = vi + gt

0 = (120sin55°) + (-9.8)t

t = 12.2 s

12.2 x 2 = 24.4 s

x = (vi)t + (1/2)at²

x = (120cos55°)(24.4) + 0

x = 64.79 m

a.

vf = vi + gt

0 = (120sin55°) + (-1.6)t

t = 74.98 s

74.98 x 2 = 149.96 s

x = (vi)t + (1/2)at²

x = (120cos55°)(149.96) + 0

x = 398.18 m

Answer:

physiology is the study of mechanisms and functions in a living system

Explanation:

it's basically a part of biology that works with how a living organism or body part functions

The diameter of the smaller end of the pipe is approximately 0.78 meters.

To determine the diameter of the smaller end of the pipe, we can use the principle of conservation of mass. According to this principle, the mass flow rate of water should remain constant throughout the pipe.

The mass flow rate is given by the equation:
Mass flow rate = density of water * cross-sectional area * velocity

Since the density of the water remains constant, we can write:
Cross-sectional area1 * velocity1 = Cross-sectional area2 * velocity2

Given that the velocity1 is 13 m/s, the diameter1 is 1.2 m, and the velocity2 is 30 m/s, we can solve for the diameter2 using the equation:
(pi * (diameter1/2)^2) * velocity1 = (pi * (diameter2/2)^2) * velocity2

Simplifying the equation:
(1.2/2)^2 * 13 = (diameter2/2)^2 * 30

Calculating the equation:
(0.6)^2 * 13 = (diameter2/2)^2 * 30

0.36 * 13 = (diameter2/2)^2 * 30

4.68 = (diameter2/2)^2 * 30

Dividing both sides by 30:
0.156 = (diameter2/2)^2

Taking the square root of both sides:
0.39 = diameter2/2

Multiplying both sides by 2:
0.78 = diameter2

To learn more about diameter

https://brainly.com/question/32968193

#SPJ8