Why should apparent magnitude NOT be used to determine which star is brighter? What information could help you determine which star is brighter?.

Answer:

the frequency of the wave increases

Answer:

The wavelength of the wave increases

Explanation:

Just did the test

A person makes a cup of coffee by first placing a 200 W electric immersion heater in 0. 32 kg of water,  it would take approximately 400 seconds or 6 minutes and 40 seconds to raise the temperature of 0.32 kg of water from 20°C to 80°C using a 200 W electric immersion heater.

The heat required to raise the temperature of a substance can be calculated using the following formula

Q = mcΔT

Where Q is the heat added or removed, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.

In this case, the mass of water is 0.32 kg, the initial temperature is 20°C, and the final temperature is 80°C. The specific heat capacity of water is 4.18 J/g°C or 4180 J/kg°C.

First, we need to calculate the temperature change

ΔT = final temperature - initial temperature = 80°C - 20°C = 60°C

Next, we can calculate the heat required

Q = mcΔT = (0.32 kg)(4180 J/kg°C)(60°C) = 79872 J

Since the electric immersion heater is rated at 200 W, we can calculate the time required to add this amount of heat

t = Q/P = 79872 J / 200 W = 399.36 s

Therefore, it would take approximately 400 seconds or 6 minutes and 40 seconds to raise the temperature of 0.32 kg of water from 20°C to 80°C using a 200 W electric immersion heater.

To know more about electric immersion heater here

https://brainly.com/question/13607492

#SPJ4

The new (resultant) vector could be written as 0 m, since the vectors cancel each other out. The vector going 5 m West is cancelled out by the vector going 5 m East, and the vector going 11 m West is cancelled out by the vector going 11 m East. This means that the final result is a vector with a magnitude of 0 and no direction.

Answer:Control S, Command S on MAC=Save

Answer:

i think it might be 5

sry if im wrong

The distribution factor (DF) is used to distribute the load from a beam to its supports or the adjacent beams of the grid. Distribution factor of CC1 = 0.38, Distribution factor of CC2 = 0.38.

The DF of a member is the portion of the load that is transferred to the adjacent member or support. Distribution factor of member CB = 0.25, Distribution factor of member CD = 0.21We are required to calculate the distribution factor for members CC1 and CC2, given they are equal. Distribution of the load on CC1 and CC2. The load acting on member CD = 20 kN. The distribution factor of CD = 0.21. Therefore, the load transferred to member CC1 = 0.21 × 20 kN = 4.2 kNAnd, the load transferred to member CC2 = 0.21 × 20 kN = 4.2 kN. Now, let's distribute the load acting on CB.The load acting on member CB = 30 kN. The distribution factor of CB = 0.25Therefore, the load transferred to member CC1 = 0.25 × 30 kN = 7.5 kN And, the load transferred to member CC2 = 0.25 × 30 kN = 7.5 kN. We know that the loads on CC1 and CC2 are equal. Hence, the distribution factor for members CC1 and CC2 is as follows: Distribution factor of CC1 = (4.2 + 7.5) kN / 30 kN = 0.3833 ≈ 0.38Distribution factor of CC2 = (4.2 + 7.5) kN / 30 kN = 0.3833 ≈ 0.38.

Let's learn more about load :

https://brainly.com/question/14812121

#SPJ11

To avoid an error of more than 18 in the speed of light due to human reaction time (δt = 0.2 s), Galileo and his assistant must be separated by a distance of at least d = cδt/18, where c is the speed of light.

Let's first consider the maximum error in the speed of light introduced by the human reaction time. The distance light travels in time δt = 0.2 s is given by:

d_max = c × δt

where c is the speed of light. The error introduced in the measurement of the speed of light due to the human reaction time is given by:

Δv = c × δt / d

where d is the distance between Galileo and his assistant. We want to find the maximum value of d that would introduce no more than an 18 error in the speed of light. Therefore, we can set up the following equation:

Δv / c = 18 / 100

Substituting the values of Δv and c, we get:

(c × δt / d) / c = 18 / 100

Simplifying, we get:

d = c × δt / (18 / 100) = (3 × 10^8 m/s) × (0.2 s) / (18 / 100) = 3.33 × 10^6 m

Therefore, the distance d must separate Galileo and his assistant in order for the human reaction time to introduce no more than an 18 error in the speed of light is approximately 3.33 million meters.

To more about distance visit:

https://brainly.com/question/12319416

#SPJ11

The value of the comic book decreased by an average of $0.04 each month between m = 36 and m = 60.

The average rate of change for the function f(x) from \(x_{1} =a\) and \(x_{2}=b\) is \(\frac{f(b)-f(a)}{b-a}\)

It is the average amount by which the function changed per unit throughout that time period.

Actually, this is the angle of the line on the function's graph that passes through two points.

The value of the comic book fell by an average of $0.04 per month (a unit in this case is a month) between m = 36 and m = 60 if the average rate of change of the function f(x) between m = 36 and m = 60 is -0,04.

Learn more about value of comic book:

https://brainly.com/question/10892791

#SPJ4

Answer:

The answer is A

Explanation: i took k12

Answer:

yeah

Explanation:

The information tells you about the rate of decay is that in Florida the reaction occurs more slowly when there is less oxygen in the air.

The reduction in the number of radionuclides per unit time is the rate of decay.

The following table shows that the rate of decay only depends upon the level of oxygen. In Florida concentration of the oxygen in the air is high

Due to this the decay time is less.

The decay time is inversly propotional to the rate of decay. In Florida the rate of decay is high.

Hence the information is that reaction occurs more slowly when there is less oxygen in the air.

To learn more about the rate of decay refer to the link;

https://brainly.com/question/14486631

Answer:

8.09

Explanation:

Use: s = ut + 1/2at^2

s = displacement

u = initial velocity

a = acceleration

t = time

Plug in numbers and get: 8.09

Answer:

Explanation:

Formula

KE = 1/2 m v^3

Givens

m  = 54 kg

v = 30 m/s

Solution

KE = 1/2 54 * 30^2

KE = 1/2 54 * 900

KE = 27 * 900

KE = 24300 Joules

The amperage represents the rate at which electric charge flows through a conductor.

What is amperage?

Amperage is a measure of electrical current, or the rate at which electrical charge flows through a circuit. It is measured in units of amps (A). Amperage is related to voltage and resistance in an electrical circuit, and can be calculated using Ohm's law. Amperage is important to consider when sizing electrical components and wiring for a circuit, as too much amperage can cause damage to the components.

The amperage, also known as current, represents the rate at which electric charge flows through a conductor. It is measured in amperes (A) and is a measure of the quantity of electric charge that passes through a given point in a circuit per unit of time. In other words, amperage is a measure of how many electrons are flowing through a wire at a given moment. A low amperage means that there is a small amount of electric charge flowing through the conductor. This could be because the resistance of the conductor is high, or because the voltage of the power source is low. A low voltage, on the other hand, means that there is a small potential difference between two points in a circuit, which means that the electric charge is not being pushed as hard and may not be flowing as quickly.

Therefore, it represents the rate at which electric charge flows through a conductor.

To learn more about amperage from the link

https://brainly.com/question/852634

#SPJ1

Answer:

Select the crown at the bottom of an answer where the speech bubble icon is.

The monthly energy cost to run the refrigerator is approximately $7.02.

To determine the monthly energy cost to run a refrigerator, we need to know the power consumption of the refrigerator and the number of hours it operates per month.

The power consumption of the refrigerator is usually stated in watts (W). If you know the power consumption in watts, you can convert it to kilowatts (kW) by dividing by 1000.

Let's assume the power consumption of the refrigerator is 100 watts (0.1 kW), and it operates for an average of 24 hours per day. In a month, there are typically 30 days.

To calculate the energy consumption in kilowatt-hours (kWh) per month, multiply the power consumption in kilowatts by the number of hours of operation per month:

Energy consumption = Power consumption (kW) x Operating hours per month

Energy consumption = 0.1 kW x 24 hours/day x 30 days

Energy consumption = 72 kWh

Now, we can calculate the cost of energy for running the refrigerator. Since electricity rates range from 8 cents/kWh (winter) to 11.5 cents/kWh (summer), we'll use an average rate of 9.75 cents/kWh for this calculation.

Monthly cost = Energy consumption (kWh) x Electricity rate (cents/kWh)

Monthly cost = 72 kWh x 9.75 cents/kWh

Monthly cost ≈ $7.02

Therefore, the monthly energy cost to run the refrigerator is approximately $7.02.

learn more about "refrigerator ":- https://brainly.com/question/2928084

#SPJ11

We will have the following:

So, the nergy is 2.3 J.

A man throwing his bag to move out of this slippery area will help him by providing a surface which increases the frictional force and therefore prevents him from slipping.

This is the type of force which resists the motion of one object against another and is formed when two substances rub or slide against one another. The main reason why people slip or fall is as a result of the low frictional force between the legs and the surface.

The bag will help increase the frictional force between the individual and the oily surface which will therefore prevent him from slipping and help him move out of the house.

Read more about Friction here https://brainly.com/question/24338873

#SPJ1

Given that in the first case,

the volume of the gas is

The pressure of the gas is

The temperature of the gas is

In the second case,

the pressure of the gas is

The temperature of the gas is

We have to find the volume, V2.

The volume v2 can be calculated as

Answer:

A typical example of where the continuity equation can be applied, is in finding the cross sectional area of a laminar falling stream of water from a pipe at an elevation, at the point where it hits the ground.

The speed of the water through the discharge opening of the pipe can be measured with a flow-meter, and the cross sectional opening of the pipe is known.

As the water leaves the pipe, and falls towards the ground, the water stream is accelerated under gravity, and the speed of the water stream increase. The increase in the speed of the water stream causes the cross sectional area to decrease in obedience of the continuity law and equation. If the speed of can be measured, then the area of the water stream just before the water touches the ground  can be calculated from the continuity equation.

If the speed of the water stream can not be measured, then it can be calculated using Newton' equation of motion

\(v^{2} = u^{2} + 2gz\)

\(v = \sqrt{u^{2} + 2gz}\)

where

v = the velocity of the water stream at the point where it hits the ground

u = the velocity of the water at the pipe discharge (measured with a flow meter in the pipe)

g = acceleration due to gravity

z = the elevation of the pipe above the ground.

After calculating the speed of the water stream at the point where it hits the ground, the cross sectional area of the the stream can be calculated from the continuity equation.

\(uA = va\)

where

u and v are the velocities of the water stream at the pipe discharge and at the ground respectively.

A = the cross sectional area of the pipe

a = the area of the water stream before it hits the ground.

the equation is simplified as

\(a = \frac{uA}{v}\)

okay, so what i have learned from my experiences with doing school on e.d.g.e.n.u.i.t.y (they won't let me say the website name on here lol) is that after you write an extended response, they show you a sample response as well as these checkboxes which show things they wanted you to have included in your answer. ideally they want you to select all of them, meaning that all of those elements were included in your answer. it's not a matter or right or wrong; none of those checkboxes contain a wrong answer. you just select the ones that apply to your answer, and you won't get penalized if you don't select all of the checkboxes. you don't even have to select any of them. there's been times where my answer has been not at all what it should've been and i just click done without checking any of those boxes because i did not include any of those elements in my response. as long as the box that you wrote your answer in is outlined in green (which yours is, and that means that the computer likes your answer), you will be fine.

i hope this makes sense! it's sort of hard to explain. if you have any questions, just comment and i'll try my best to explain better lol. have a great rest of your day! <3

If a wave has a time period of 0.1s and is travelling at a speed of 340 m/s, the wavelength of the wave  is 34 meters.

A wave is a dynamic disturbance of one or more quantities that propagates in physics, mathematics, and related sciences. When waves oscillate frequently around an equilibrium value at a certain frequency, they are said to be periodic.

The wavelength of the wave = speed of the wave ×  time period  of the wave

= 340 m/s × 0.1 s

= 34 m.

Hence, the wavelength of the wave  is 34 meters.

Learn more about wave here:

https://brainly.com/question/25954805

#SPJ1

Answer:

True Edg2020

Explanation:

Answer: true

Explanation:

because I say so :P

if sufficiently high temperatures (R) are achieved in the laboratory, nuclear fusion (S) becomes a reality, and as a result, the world's energy problems (E) will be solved.

C=  Funding for nuclear fusion will be cut.

H =  Supply of hydrogen fuel is limited.

R = Sufficiently high temperatures are achieved in the laboratory.

S =  Nuclear fusion becomes a reality.

E = World's energy problems are solved.

We then represent the statements as:

Learn more about Nuclear fusion at:

https://brainly.com/question/982293

#SPJ1

(a) Time = 9.30 seconds. (b) Average Speed is 48.2 m/s. (c) Displacement is 305 m. (d) If the calculations are accurate, the time, speed, and distance values found in part (d) should match those found in parts (a), (b), and (c).

To determine the answers to parts (a) through (c) of the problem if the officer starts accelerating 1.00 s after the car passes him,

(a) Time: Since the car continues to move at a constant speed, its time to cover the 400 m distance remains the same as in part (a), i.e., 9.30 s.

(b) Speed: The officer now starts accelerating 1.00 s after the car passes him, so his time to cover the 400 m distance is 1.00 s less than the car, which is 8.30 s. Therefore, his average speed would be:

v = d/t = 400 m / 8.30 s = 48.2 m/s

(c) The displacement of the officer would be the same as in part (c), i.e., 305 m.

To determine the time it takes the officer to catch the car, we can use the same approach as in part (b) but consider the relative velocity between the car and the officer, v_rel = v_car - v_officer.

At the moment the officer starts accelerating, the car has already covered a distance of, d_car = v_car × t_acceleration where t_acceleration is the time the officer takes to start accelerating after the car passes him. Therefore, the displacement is,

d_initial = d_car - d_officer = v_car × t_acceleration - 0

where d_officer is the initial distance between the officer and the car.

Then, the time it takes for the officer to catch the car is, t_catch = d_initial / v_rel.

To determine the speed of the officer when he catches the car, we can use the same approach as in part (b), but use the time it takes for the officer to catch the car, i.e., t_catch. Therefore, the speed of the officer would be, v = d / t_catch = 400 m / (t_catch + 1 s). To determine the distance the officer travels before catching the car, we can use the same approach as in part (c), but use the time it takes for the officer to catch the car, i.e., t_catch. Therefore, the distance the officer travels would be, d = v × t_catch. The values obtained for the time, speed, and distance in part (d) should be the same as in parts (a), (b), and (c) if the calculations are correct.

To know more about distance, here

brainly.com/question/15172156

#SPJ4

Answer:

Glucose diffuse from the blood plasma, across the capillary walls to the tissue fluid, and then to the cell.

Glucose diffuse from the blood plasma, across the capillary walls to the tissue fluid, and then to the cell. The waste product urea diffuse from the cells of the liver to the tissue fluid, and then across the capillary walls into the blood plasma.

The acceleration due to gravity on the surface of the Moon is approximately 1.625 m/s².

Compare that to the surface of the earth which is approximately 9.8 m/s². That makes the acceleration on the moon about 16.6% that on Earth's surface.

Answer:

the answer is 32,400

Explanation:

I looked it up for you

The average speed denotes the average rate of speed over the extent of a trip. The average speed of a car which travels 270 meters in 30 seconds is 9m/s.

The average speed can be defined as the ratio of the total distance travelled by an object to the total time taken. It is a scalar quantity. It is represented by the magnitude and does not have direction. Its SI unit is m/s.

The average speed of an object help us to calculate the rate of travel time and the distance. The average speed of an object when it covers the same distance at two different speed, X and Y is:

Average speed = 2XY/ X+Y

The equation used here to calculate the average speed is:

Average speed = Total distance / Total time

Average speed  = 270 m / 30 s = 9 m/s

Thus the average speed is 9 m/s.

To know more about average speed, visit;

https://brainly.com/question/10449029

#SPJ2

Although part of your question is missing, the complete question is "Find the final velocity of the particle if it is initially moving along the x-axis with a velocity of −1.85 m/s. The force shown in the force-time graph acts on a 2.4kg object."

The final velocity of the particle is 1.43 m/s.

The impulse of force is the product of the resultant force and duration of time under the impulse-momentum theorem.

Δρ = ΔF + Δ t = area under F-t curve.

area = area of rectangle + area of triangle( 1/2 base ×height )

∴ area = (2× 3) + 1/2 (2×2) = 8 N

To find the final velocity, Δρ = mass × Δvelocity

let the final velocity be v'

∴  8 = 2.4 × ( v' - (-1.85))

2.4v' = 8- 4.44

v' = 1.43 m/s.

Hence the final velocity of the particle is 1.43 m/s.

Learn more about numerical here https://brainly.com/question/15278431

#SPJ1

The tension T₁ is 97.24N and the tension T₂ is 84.21.N.

In physics, tension is the pulling force that is transmitted through a rope, cable, wire or other similar object when it is pulled tight by forces acting from opposite ends.

When a rope or cable is subjected to tension, it experiences a force that is directed along its length and tends to elongate the object. The magnitude of the tension force is equal and opposite at each end of the rope or cable, as long as it is in equilibrium.

The resolution of forces along the horizontal direction is given as,

T₁cos30∘=T₂cos45∘

T₂= \(\sqrt \frac{3}{2}\)T₁

The resolution of forces along the vertical direction is given as,

T₁ sin30∘ +T₂sin45∘=400

T₁ × 1/2 + \(\sqrt \frac{3}{2}\\\)T₁ ×\(\frac1\sqrt2\) = 400

T₁ =97.24N

T₂= \(\sqrt \frac{3}{2}\)×97.24N

T₂ = 84.21.N

To know more about:

https://brainly.com/question/30694482

#SPJ1

To find the tension forces T₁ and T₂, we need to use the trigonometric ratios and the equilibrium conditions for the system.

First, let's analyze the vertical forces. The weight W is pulling down, while the vertical components of T₁ and T₂ are pulling up. The equilibrium condition for the vertical forces is:

T₁ sin(37°) + T₂ sin(53°) = W

Substituting the values for W, we get:

T₁ sin(37°) + T₂ sin(53°) = 400N

Next, let's analyze the horizontal forces. The horizontal components of T₁ and T₂ are pulling in opposite directions, so the equilibrium condition for the horizontal forces is:

T₁ cos(37°) - T₂ cos(53°) = 0

Now we have two equations with two unknowns, T₁ and T₂. We can solve this system of equations by substitution or elimination. For example, by substitution, we can express T₂ in terms of T₁ from the second equation:

T₂ = T₁ cos(37°)/cos(53°)

And then substitute this expression into the first equation:

T₁ sin(37°) + T₁ cos(37°)/cos(53°) sin(53°) = 400N

Simplifying and solving for T₁, we get:

T₁ = 400N/(sin(37°) + cos(37°)sin(53°)/cos(53°))

T₁ ≈ 294.3N

Finally, we can substitute this value of T₁ back into the expression for T₂ to find T₂:

T₂ = T₁ cos(37°)/cos(53°) ≈ 294.3N cos(37°)/cos(53°) ≈ 272.6N

So, the tension forces are T₁ ≈ 294.3N and T₂ ≈ 272.6N.

Answer: T₁ ≈ 294.3N and T₂ ≈ 272.6N

#SPJ1

Similar Question: https://brainly.com/question/30664183

If a dung beetle can roll (without slipping) a ball of dung whose radius is 2.5 cm at a linear speed if 3.5 m/s, the angle through which the ball rolls as the ball moves a distance of 15 cm is approximately 343.8 degrees.

Assuming that the ball of dung rolls without slipping, the distance traveled by any point on the circumference of the ball is given by the circumference of the circle it traces. The circumference of the ball can be calculated as follows:

C = 2πr

C = 2π(2.5 cm)

C = 15.7 cm

The distance traveled by the ball is given as 15 cm. Therefore, the number of revolutions made by the ball can be calculated as follows:

Number of revolutions = Distance traveled by ball / Circumference of ball Number of revolutions

Number of revolutions = 15 cm / 15.7 cm

Number of revolutions = 0.955

Since the ball completes less than one full revolution, the angle through which it rolls can be calculated as follows:

Angle = Number of revolutions x 360 degrees

Angle = 0.955 x 360 degrees

Angle = 343.8 degrees (rounded to one decimal place)

Therefore, the ball of dung rolls through an angle of approximately 343.8 degrees as it moves a distance of 15 cm.

For more such questions on linear speed, click on:

https://brainly.com/question/20709784

#SPJ11