2. how can two vehicles going to the same location arrive at the same time when one takes primary roads and another takes less-traveled roads to decrease the distance? explain your answer in terms of distance, displacement, speed, and velocity.

Answer:

Explanation:

You can use a one-dimensional physics equation to find the horizontal distance:

Δx = \(v_{0}t+\frac{1}{2}at^2\) where v0 is the initial velocity (30 m/s), t is time, and a is accleration. There is 0 acceleration in the horizontal dimension so the equation becomes

Δx\(=v_{0}t\) which is a fancy and meant-to-be-intimidating version of "distance - rate times time". The delta x is the distance traveled and our known, v0 is the initial velocity, and t is time. We have the rate and the time:

Δx = \((30)2_\) which gives us the horizontal distance of 60 meters

The Milky Way galaxy is barely 100,000 light-years broad, despite the fact that the observable Universe is 93 billion light-years across.

The Milky Way is 30 kpc across, or around 100,000 light years (1,000,000,000,000,000,000 miles).

The Andromeda Galaxy, our Milky Way, and the Triangulum Galaxy are the three largest galaxies in the Local Group, which also includes about 50 considerably smaller dwarf galaxies.

The scale length is the galaxy's radius at which it is smaller by e (2.7) factors.

To know more about Milky Way galaxy visit:-

https://brainly.com/question/2905713

#SPJ4

The laws enunciated by Newton, and considered as the most important in classical mechanics, are three: the law of inertia, the relationship between force and acceleration, and the law of action and reaction. Newton argued that all movements adhere to these three main laws, formulated in mathematical terms.

Answer:

In classical mechanics, newton's laws of motion are three laws that describe the relationship between the motion of an object and the forces acting on it.

Answer:

To find the mass using density and volume we just multiply them against each other which causes ml to cancel and just leaves us with grams which represents how much the item weights.

\(mass=density*volume\)

\(mass=0.875\frac{g}{ml}*4.0\ ml\)

\(mass=3.5\ g\)

Therefore, our final answer is that our pencil weight 3.5 grams

Hope this helps!  Let me know if you have any questions

4 Times. If the sun were moved 2 times further away, it would be 4 times fainter.

The relationship between fainting and the distance from the sun can be given as:

\(1/d^2\), where \(d\) is the distance from the sun.

This is called the Inverse Square Law.

According to the inverse square law, a phenomenon's intensity falls in proportion to the square of the distance as it gets further away from its source. Understanding the behavior of light and sound to develop systems that use or interact with these phenomena all depend on this idea, which is crucial in many fields of physics and engineering.

To learn more about the Inverse Square Law, click here https://brainly.com/question/30404562

#SPJ4

Answer:

the answers are 2, 4, and 5.

Explanation:

Answer: velocity

Explanation:

Slope of velocity time graph = acceleration. A change in velocity = a change in acceleration. A constant velocity would mean that there would be no acceleration.

Speed and velocity aren't the exact same thing. Speed is a scalar measurement while velocity is a vector measurement. The speed of an object could be different from its velocity (ex: speed CANNOT be negative while velocity can).

An object can have a constant speed but have a changing velocity.

Answer:

velocity

Explanation:

The definition of accelerate is a change in velocity, even if the speed doesn't, a change in velocity means acceleration.

Answer:

\(c. \: organ\)

Answer:

C.

Explanation:

The frequency of the minute hand is 1/60 Hz. Given that the minute hand of a clock completes one revolution in one hour and there are 3,600 seconds in one hour.

To calculate the frequency of the minute hand: Frequency of the minute hand = No. of revolutions per secondFirstly, let us calculate the number of revolutions of the minute hand in one second.1 hour = 60 × 60 = 3600 secondsIn one hour, the minute hand completes 1 revolution. So, in 1 second, the minute hand completes 1/3600 of the revolution.Now, we can calculate the frequency of the minute hand.

Frequency of the minute hand = No. of revolutions per second Frequency of the minute hand = 1/3600 HzTo calculate the frequency of the minute hand, we can use the following steps: Step 1: Calculate the number of revolutions of the minute hand in one second.1 hour = 60 × 60 = 3600 seconds In one hour, the minute hand completes 1 revolution.

To know more about frequency visit:

https://brainly.com/question/31938473

#SPJ11

The weight of person on the moon can be given as,

Substitute the known values,

Thus, the weight of person on the moon is 18.7 N,

Answer:

The work done by Isaac can be calculated using the formula:

work = force x distance

where force is the amount of force applied and distance is the distance over which the force is applied. In this case, the force applied by Isaac is 42 Newtons and the distance over which the force is applied is 6 meters. However, we need to calculate the actual distance moved by the box, which is different from the distance over which the force is applied.

To calculate the distance moved by the box, we can use the formula for the mechanical advantage of a lever:

mechanical advantage = distance moved by effort / distance moved by load

In this case, the effort is the force applied by Isaac, the load is the weight of the box (15 kg), and the mechanical advantage is the ratio of the distances moved. We can rearrange this formula to solve for the distance moved by the load:

distance moved by load = distance moved by effort / mechanical advantage

In this case, the distance moved by effort is 2 meters (the height the box is lifted), and the mechanical advantage can be calculated using the ratio of the lengths of the lever arms (assuming the lever is a simple machine). Let's say the lever has two arms, one on each side of the pivot point, with lengths of L1 and L2. The mechanical advantage of the lever is:

mechanical advantage = L2 / L1

Assuming Isaac applied the force at the end of one arm, and lifted the load at the end of the other arm, we can say that the ratio of the lengths of the arms is:

L2 / L1 = 2 / 6

Simplifying, we get:

L2 = L1 / 3

This means that the load is lifted a distance of 2/3 meters (or 0.67 meters), which is the distance moved by the load. Now we can calculate the work done by Isaac:

work = force x distance

= 42 N x 6 m

= 252 J

Therefore, the amount of work done by Isaac to lift the 15-kilogram box is 252 Joules. The correct answer is (B) 252 Joules.

Regulatory compliance refers to the set of rules and regulations imposed by state and federal authorities that businesses must follow in order to ensure that their activities are conducted in accordance with environmental standards and legal requirements.

State and federal governments have established various laws and regulations to protect the environment and promote sustainable practices.

These laws cover a wide range of areas, such as pollution control, waste management, resource conservation, occupational health and safety, and more. Businesses are obligated to comply with these regulations to minimize their negative impact on the environment, protect public health, and maintain social responsibility.

Non-compliance with environmental regulations can result in legal consequences, penalties, fines, and damage to a company's reputation.

Therefore, businesses need to stay informed about the relevant laws and regulations, implement appropriate practices, and maintain ongoing compliance to ensure their operations align with environmental standards.

To learn more about compliance click here: brainly.com/question/30286840

#SPJ11

Answer:

The robot should hold the bucket at 137.6 m from the start of the field

Explanation:

Horizontal Motion

When an object is launched horizontally with a speed v from a height h, it describes a curved path exclusively ruled by gravity until it eventually hits the ground.

The range or maximum horizontal distance d traveled by the object can be calculated as follows:

\(\displaystyle d=v\cdot\sqrt{\frac {2h}{g}}\)

Birdman flies horizontally at a  speed of v=40 m/s and a height of h=58  m. He releases a turd above the start of the field. If the robot was exactly down  Birdman, then it won't catch the turd with the bucket because it would land farther away by a distance equal to the range. Thus:

\(\displaystyle d=40\cdot\sqrt{\frac {2*58}{9.8}}\)

\(\displaystyle d=40\cdot\sqrt{11.84}\)

d = 137.6 m

The robot should hold the bucket at 137.6 m from the start of the field

Answer:

Work done = -220,000 Joules.

Explanation:

Given the following data;

Mass = 1100kg

Initial velocity = 20m/s

To find workdone, we would calculate the kinetic energy possessed by the car.

Kinetic energy can be defined as an energy possessed by an object or body due to its motion.

Mathematically, kinetic energy is given by the formula;

\( K.E = \frac{1}{2}MV^{2}\)

Where,

Substituting into the equation, we have;

\( K.E = \frac{1}{2}*1100*20^{2}\)

\( K.E = 550*400\)

K.E = 220,000J

Therefore, the workdone to bring the car to rest would be -220,000 Joules because the braking force is working to oppose the motion of the car.

Answer:

0.4113772 s

Explanation:

Given the following :

Mass of bullet (m1) = 8g = 0.008kg

Initial horizontal Velocity (u1) = 280m/s

Mass of block (m2) = 0.992kg

Maxumum distance (x) = 15cm = 0.15m

Recall;

Period (T) = 2π√(m/k)

According to the law of conservation of momentum : (inelastic Collison)

m1 * u1 = (m1 + m2) * v

Where v is the final Velocity of the colliding bodies

0.008 * 280 = (0.008 + 0.992) * v

2.24 = 1 * v

v = 2.24m/s

K. E = P. E

K. E = 0.5mv^2

P.E = 0.5kx^2

0.5(0.992 + 0.008)*2.24^2 = 0.5*k*(0.15)^2

0.5*1*5.0176 = 0.5*k*0.0225

2.5088 = 0.01125k

k = 2.5088 / 0.01125

k = 223.00444 N/m

Therefore,

Period (T) = 2π√(m/k)

T = 2π√(0.992+0.008) / 233.0444

T = 2π√0.0042910

T = 2π * 0.0655059

T = 0.4113772 s

The period of the simple harmonic motion (SHM) is 0.42 s.

The given parameters;

The final velocity of the system after the impact is calculated as follows;

\(m_1 u_1 + m_2u_2 = v(m_1 + m_2)\\\\0.008(280) \ + \ 0.992(0) = v(0.008 \ + \ 0.992)\\\\2.24 = v(1) \\\\v = 2.24 \ m/s\)

The spring constant is calculated as follows;

\(\frac{1}{2} kx^2 = \frac{1}{2} mv^2\\\\k = \frac{mv^2}{x^2} \\\\k = \frac{(0.008 + 0.992))\times 2.24^2}{(0.15)^2} \\\\k = 223 \ N/m\)

The angular speed of the simple harmonic motion (SHM) is calculated as follows;

\(\omega = \sqrt{\frac{k}{m} } \\\\\omega = \sqrt{\frac{223}{(0.008 + 0.992)} }\\\\\omega = 14.933 \ rad/s\)

The period of the oscillation is calculated as follows;

\(T = \frac{2\pi }{\omega} \\\\T = \frac{2\pi }{14.933} \\\\T = 0.42 \ s\)

Learn more here:https://brainly.com/question/13962907

Answer:

A neutron star is the most intensely dense object in all the universe. Of course, the argument can be made that a black hole is the most dense, but considering that a black hole is technically beyond the event horizon, it is neutron stars that get the top spot for the being the ‘most dense’.

Explanation:

:) please mark me as brainliest, thanks

The emf induced in a wire moving on a circular path around a solenoid is given by:

emf = -N * dΦ/dt

where N is the number of turns in the solenoid, Φ is the magnetic flux, and t is time.

Since the wire is moving on a circular path of radius 8 cm, the magnetic flux through the wire is given by:

Φ = B * A

where B is the magnetic field at the position of the wire and A is the area of the circle.

The area of the circle is given by:

A = π * r^2

where r is the radius of the circle, which is 8 cm or 0.08 m.

So, A = π * (0.08 m)^2 = 0.0201 m^2.

The magnetic field is increasing, so we need to use the time derivative of the magnetic field to calculate the emf.

Let's assume that the magnetic field is increasing at a constant rate of 0.1 T/s.

Therefore, the time derivative of the magnetic field is:

d/dt (B) = 0.1 T/s

Substituting these values into the emf equation, we get:

29 V = -N * (d/dt (B)) * A

We don't know the number of turns in the solenoid, but we can solve for N * (d/dt (B)):

N * (d/dt (B)) = -29 V / A

N * (d/dt (B)) = -29 V / 0.0201 m^2

N * (d/dt (B)) = -1442.79 V/m^2

Now we can use Faraday's law to calculate the current in the wire.

The emf induced in the wire is equal to the voltage drop across the wire, which is:

emf = IR

where I is the current in the wire and R is the resistance of the wire.

Therefore, the current in the wire is:

I = emf / R = 29 V / 5 Ω = 5.8 A

So, the current in the wire is 5.8 A.

To know more about solenoid visit here :

https://brainly.com/question/21842920

#SPJ11

Answer:

3.33 m/s

Explanation:

1600 divided by 8 comes out to 200, so supposing we're measuring the speed in terms of Meters Per Second, we would need to divide 200 by 60 to take account of the individual seconds as opposed to simply 200 meters per minute.

The list of power sources from the lowest net energy to the highest net energy can be ordered as follows: a) PV (photovoltaic) cells, b) nuclear, and c) hydroelectric.

a) PV cells, also known as solar panels, convert sunlight directly into electricity. Although they are a renewable and environmentally friendly energy source, their net energy is relatively low compared to other sources. The efficiency of PV cells varies, but on average, it is around 15-20%. Their output depends on factors such as sunlight intensity, location, and the angle of installation.

b) Nuclear power comes from the process of nuclear fission, in which atoms of uranium are split to release a large amount of energy. Nuclear power plants are capable of producing a significant amount of electricity. However, the net energy of nuclear power is limited by the high costs of constructing and maintaining nuclear plants, as well as the management and disposal of radioactive waste. Despite these limitations, nuclear power has a higher net energy than PV cells.

c) Hydroelectric power is generated by harnessing the kinetic energy of flowing water to produce electricity. This method of energy production has the highest net energy among the three sources listed. Hydroelectric plants have high efficiency rates, typically around 90%, and are able to produce electricity consistently. Moreover, they have lower greenhouse gas emissions and a longer life span compared to other power sources. The major constraint for hydroelectric power is the availability of suitable locations with ample water resources, such as rivers and dams.

Hence the order would be a, b and then c.

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

https://brainly.com/question/28582522#

#SPJ11

The conservation of momentum and impulse are  the physics principle of the measure the force of the heart's contraction    

The momentum is defined as the product of the mass of the body by its speed. If we make the system isolated, the moment or quantity of movement must be conserved since there are external forces.

                P = mv

               Δp = p_f - p₀

Where p is the momentum, m and v the mass and velocity of the body

In this case we consider the body as an isolated system and if it is immobile, zero velocity, the initial momentum is zero

               p₀ = 0

When the heart pumps the room it goes out in one direction and the body recoils in the opposite direction, so the final momentum is

              p_f = m v₁ - (M-m) v₂

Where m is the amount of blood pumped, (M-m) the remaining mass of the body, v₁ and v₂ the velocity of the blood and the body

If the body is isolated, the momentum will be preserved

               p_f = p₀

               m v₁ - (M-m) v₂ = 0

               v₁ = \(\frac{M-m}{m} \ v_2\)

The To measure the force of the contraction of the heart we use that the impulse is equal to the variation of the momentum

                 I_ {avg} = F t = ΔP

                  F = \(\frac{\Delta p}{t}\)

Where t is the time and is measured with a stopwatch with the pulsations of each patient.

                  F = \(\frac{m \ v_1 - (M-m) \ v_2 }{t}\)

The construction of a system for the measurement must consist of spring or some means of oscillation and use the movement to measure the recoil speed of the patient which is small.

In conclusion, we use the conservation of momentum and impulse are the  physics principle of the measure the force of the heart's contraction    .

Learn more about here:

https://brainly.com/question/904448

Answer:

b. Because the southern pole of the Earth's magnet is in the north.

Explanation:

This is very weird to think about but Earth's southern magnetic pole is in Earth's geographic north. So when compass points north, it is actually getting attracted to the southern magnetic pole (that is actually located in the north direction- geographic location- in earth).

Compact fluorescent light usually has a B. Longer life compared to an incandescent bulb producing the same number of lumens.

CFLs are designed to be more energy-efficient than incandescent bulbs. They use less energy to produce the same amount of light, which makes them more efficient. This efficiency leads to a longer lifespan for the CFL compared to incandescent bulbs. In general, a CFL can last up to 10 times longer than an incandescent bulb.

To summarize:
- A compact fluorescent light (CFL) has a longer life compared to an incandescent bulb producing the same number of lumens.
- This is due to the higher energy efficiency of CFLs, which allows them to use less energy and have a longer lifespan.

To know more about the fluorescent light:

https://brainly.com/question/14356450

#SPJ11

The wavelengths at the frequency limits of 20 Hz and 20 kHz are approximately 17 meters and 0.017 meters (or 17 mm), respectively.

To determine the wavelengths at the frequency limits of 20 Hz and 20 kHz, we can use the equation:

Wavelength = Speed of Sound / Frequency

Given:

Speed of Sound = 340 m/s

Frequency:

Lower Limit = 20 Hz

Upper Limit = 20,000 Hz (20 kHz)

For the lower limit:

Wavelength_lower = Speed of Sound / Frequency_lower

= 340 m/s / 20 Hz

= 17 meters

For the upper limit:

Wavelength_upper = Speed of Sound / Frequency_upper

= 340 m/s / 20,000 Hz

= 0.017 meters (or 17 mm)

Therefore, the wavelengths at the frequency limits of 20 Hz and 20 kHz are approximately 17 meters and 0.017 meters (or 17 mm), respectively.

Know more about  wavelengths   here:

https://brainly.com/question/10750459

#SPJ8

Answer:

17.27 Hz

Explanation:

Applying

v = λf................ Equation 1

Where v = speed of the car, λ = Distance between successive crevice, f = number of crevice moved in 1 seconds(Frequency of the vibration)

make f the subject of the equation

f = v/λ............. Equation 2

From the question,

Given: v = 38 m/s, λ = 2.2 m

Substitute these values into equation 2

f = 38/2.2

f = 17.27 Hz

3 factors that account for the some of the missing 66.3% of the power that the solar cell does not convert to usable electricity are 1. Thermalization losses , 2.Transmission losses , 3.  Recombination losses

The Shockley-Queisser efficiency limit is an important concept in photovoltaics that describes the maximum theoretical efficiency of a solar cell based on its bandgap. This limit applies to single-junction silicon solar cells, which are currently the most widely used type of solar cell in the industry. The Shockley-Queisser efficiency limit is 33.7%. This means that even under ideal conditions, a single-junction silicon solar cell can convert no more than 33.7% of the energy in sunlight into usable electricity. The remaining 66.3% of the energy is lost in various ways, and these losses account for the difference between the actual efficiency of a solar cell and the theoretical maximum efficiency.

Here are three factors that account for some of the missing 66.3% of the power that the solar cell does not convert to usable electricity:

1. Thermalization losses: Some of the energy in sunlight is absorbed by the solar cell but is not converted into usable electricity. Instead, this energy is converted into heat, which raises the temperature of the solar cell. When the temperature of the solar cell rises, some of the energy that was originally in the sunlight is lost to the surroundings. This is known as thermalization loss.

2. Transmission losses: Some of the energy in sunlight is lost as it passes through the various layers of the solar cell. This is because each layer absorbs some of the energy in sunlight, which reduces the amount of energy that is available to be converted into usable electricity.

3. Recombination losses: When an electron is excited by sunlight and jumps from the valence band to the conduction band in the silicon crystal lattice, it leaves behind a positively charged hole. If the electron and hole recombine before they can be collected by the electrodes of the solar cell, the energy that was in the electron-hole pair is lost as heat. This is known as recombination loss.

These are three factors that account for some of the missing 66.3% of the power that the solar cell does not convert to usable electricity.

to know more about solar cell visit:

https://brainly.com/question/29553595

#SPJ11

Answer:

13

Explanation:

34

The coefficient of kinetic friction is approximately 0.102.

The  coefficient of kinetic friction is calculated by using the following formula;

frictional force = coefficient of kinetic friction x normal force

Since the object is not accelerating, we know that the force of gravity pulling down on the object is equal and opposite to the normal force pushing up on the object. Therefore, we can use the formula:

normal force = weight of the object = mass x gravity

where;

So, the normal force on the object is:

normal force = 95 kg x 9.8 m/s^2 = 931 N

Now we can substitute the values we have into the formula for coefficient of kinetic friction:

95 N = coefficient of kinetic friction x 931 N

Solving for the coefficient of kinetic friction, we get:

coefficient of kinetic friction = 95 N / 931 N ≈ 0.102

Learn more about coefficient of kinetic friction here: https://brainly.com/question/20241845

#SPJ1

The complete question is below:

The mass of the object is 95kg. What is the coefficient of kinetic frictions, if the frictional force is 95N.

Answer:

6.38 * 10^14 Hz

Explanation:

When an airplane travels 640 miles from Topeka to Houston in 3. 2 hours, going against the wind. The return trip is with the wind and takes only 2 hours. Then the rate of the airplane with no wind is 260 miles/hr, and the rate of the wind is 100 miles/hr

Let Va is the velocity of the airplane

Va is the velocity of the wind

When flying against the wind then

(Va+Vw)*(3.2 hours) = 640

3.2Va + 3.2Vw = 640

3.2Vw = 640 - 3.2Va

Vw = 200 - Va----------------(1)

When flying with the wind:

(Va-V)*(2 hours) = 640km

2Va - 2Vw = 640

Va - Vw = 320 ----------------(2)

Putting the value of VW in equation (2) we get

Va - (200-Va) = 320

2Va = 320 +200

2Va = 520

Va = 260

Putting this value in equation (2)

Vw =Va - 360

Vw = 100

Therefore the rate of the airplane with no wind is 260 miles/hr, and the rate of the wind is 100 miles/hr

Learn more about rates:

https://brainly.com/question/26046491

#SPJ4