If a football player does 39000 J of work, how much power does the football player exert in 5 minutes

True, colder average temperatures and longer nights in Edmonton and Calgary lead to high energy usage to heat and light homes.

In Edmonton and Calgary, colder average temperatures and longer nights are characteristic of their climate. During the winter months, temperatures drop significantly, often reaching below freezing levels, and the duration of daylight is reduced due to shorter days and longer nights.

These weather conditions necessitate increased energy usage for heating and lighting homes. As the temperatures drop, residents rely on heating systems to maintain a comfortable indoor temperature, leading to higher energy consumption. This includes the use of furnaces, heaters, and other heating devices.

Moreover, the longer nights in these cities result in a greater need for artificial lighting Latitude. With fewer daylight hours available, residents must rely on electric lighting for a more extended period, contributing to increased energy usage.

Overall, the combination of colder temperatures and longer nights in Edmonton and Calgary creates a higher demand for energy to heat and light homes, making the statement true.

Learn more about Latitude here

https://brainly.com/question/32077915

#SPJ11

When the engine cuts out, the model rocket is going approximately 61.24 m/s.

To find out how fast the 0.80 kg model rocket is going when the engine cuts out after applying 1500 J of work over the first 35 meters of flight, we need to use the following terms: work, energy, mass, and velocity.

Step 1: Calculate the kinetic energy
Since the engine applies 1500 J of work, and the work-energy theorem states that work equals the change in kinetic energy, we have:
Kinetic Energy = Work
Kinetic Energy = 1500 J

Step 2: Use the kinetic energy formula
The formula for kinetic energy is KE = 0.5 * m * v^2, where KE is the kinetic energy, m is the mass, and v is the velocity. In this case, m = 0.80 kg and KE = 1500 J. We need to find the velocity (v).

Step 3: Rearrange the formula to solve for velocity
First, divide both sides by 0.5 * m to isolate v^2:
v^2 = KE / (0.5 * m)
v^2 = 1500 J / (0.5 * 0.80 kg)

Now, calculate the value of v^2:
v^2 = 3750

Step 4: Find the velocity
Take the square root of both sides to find the velocity:
v = √3750
v ≈ 61.24 m/s

To know more about engine, visit:

https://brainly.com/question/10736767

#SPJ11

Each ball has an electric field surrounding it, and the magnet creates a magnetic field as well.

The area of space surrounding an electrical charges particle or object within which the charged body perceives force is known as the electric field .Examples: -Electric fields are created by charges and their configurations, such as capacitor and battery cells.

Each location in space at which a charge exists in any form can be regarded to have an electric field attached to it. The electrostatic force per mass unit is another name for an electric field. The electric field's equation is stated as E = F / Q.

To know more about electric field visit:

https://brainly.com/question/15800304

#SPJ1

Answer:

B

Explanation:

Fission and Fission are nuclear reaction processes that releases energy.

Fission is the process where the nuclei of an atom splits into smaller nuclei of same element or elements of smaller nuclei when Fussion is when two smaller nuclei combined to form one of a different element of a higher nuclei. These processes release energy.

Answer:

D. Their products have less mass than their reactants.

Explanation:

Answer:

3g/cm3

Explanation:

Mass divided by volume = density.

15g / 5cm cubed = 3g/cm cubed

The speed of the ball seven seconds later is 28.6 m/s.

We have the following information;

initial velocity of the ball = 40 m/s

time taken = 7 seconds

Acceleration of the ball = 9.8 m/s^2

Now;

v = u - gt (the ball is moving upwards)

v = 40 - (9.8 * 7)

v = 28.6 m/s

Learn more about acceleration:https://brainly.com/question/12550364?

#SPJ1

The magnetic field here is perpendicular to the coil's surface from outward to inward because the magnetic field's direction is from south pole to north pole inside the coil.

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the magnetic field and its own velocity acts on a moving charge in a magnetic field.

Learn more about Magnetic field here:

https://brainly.com/question/14411049

#SPJ4

Answer:

the push pass and the wrist shot i believe

Explanation:

Answer:

Your ans

Explanation:

For floor hockey

Diana is paddling upstream.

Geese are moving downstream.

Apparent speed reduction of geese will happen according to Diana if her speed is increased.

This can be done by paddling faster upstream.

The two largest natural cycles where convection currents occur are :

the movement of air in the atmosphere and

the movement of magma in the earth's mantle.

Answer:

The two largest natural cycles where convection currents occur are the movement of air in the atmosphere and the movement of magma in the earth's mantle.

Explanation:

To determine the reaction at supports A and E and draw the axial force, shear force, and planar frame, the given loadings need to be analyzed. The variations in axial force and bending moment along the length of frame, highlighting the peak values.

To find the reaction at supports A and E, the equilibrium conditions of the frame need to be satisfied by considering the applied loads. Once the reactions are determined, the axial force, shear force, and bending moment diagrams can be constructed.

The axial force diagram shows the variation of axial forces along the length of the frame. Positive values indicate tension, while negative values indicate compression. The shear force diagram displays the variations in shear forces, with positive values indicating upward forces and negative values indicating downward forces. The bending moment diagram illustrates the changes in bending moments along the frame, with positive values indicating sagging moments and negative values indicating hogging moments.

Learn more about reaction here;

https://brainly.com/question/30628648

#SPJ11

Answer:

i think it's is 30N

Explanation:

i got it right

Yes, she will be able to retrieve the item

An echo is the repetition of sound formed due to the reflection of the sound wave.

From the question, we are given the following;

Speed of sound through water v = 530m/s

The time it takes the echo to reach the sonar detector t = 6.2s

First, we need to know how far the echo can travel using the formula;

2x = vt

x is the distance from the source of the sound to the reflector

v is the speed of sound

t is the time

Substituting the given values into the formula:

\(x=\frac{vt}{2}\\x=\frac{530*6.2}{2} \\x=530*3.1\\x= 1643m\)

Since the research historian knows that her equipment is only good enough to recover items that are at a depth of 5 000 m or less and 1643m is less than 5000m, hence she will be able to retrieve the item.

Learn more about echo here: https://brainly.com/question/23127522

The research historian can retrieve the item.

Sound is a form of mechanical waves, which is a kind of waves that needs a medium to propagate itself and whose kinematic is representative of motion at constant speed. The maximum echo time (\(t_{e}\)), in seconds, is the distance travelled by waves (\(s\)), in meters, divided by velocity of sound through the medium (\(v_{s}\)), in meters per second:

\(t_{e} = \frac{s}{v_{s}}\) (1)

Please notice that distance travelled by sound is twice the depth of the sunken object.

If we know that \(s = 10000\,m\) and \(v_{s} = 1530\,\frac{m}{s}\), then the maximum echo time is:

\(t_{e} = \frac{10000\,m}{1530\,\frac{m}{s} }\)

\(t_{e} = 6.535\,s\)

Any sunken object whose echo time is less than 6.535 seconds can be retrieved. As the echo time related to the item was 6.2 seconds, the research historian can be able to retrieve the object.

A one-time pad is a type of encryption that is completely unbreakable if it is done correctly. It works by generating a random key that is at least as long as the message being encrypted. The key is then combined with the message using an XOR operation.

This produces a ciphertext that cannot be decrypted without the key. The key is used only once and then discarded, hence the name "one-time pad". A one-time pad is completely unbreakable because there is no pattern to the key that can be used to decrypt the message. Each character in the key is generated randomly and independently of the other characters. Therefore, the key is completely unpredictable. Even if an attacker knows the key length and has access to the ciphertext, they cannot use any techniques to decrypt it.

This is because there is no pattern to the ciphertext that can be used to determine the key.The only way to decrypt a one-time pad is to have the key. If an attacker tries to brute-force the encryption by trying all possible keys, they will generate every possible message that is the same length as the original message. This means that the ciphertext is completely meaningless without the key. It is therefore important to keep the key secret and ensure that it is only used once. ,Message: yellow stone Key: wolf To encrypt the given message using the vigenere cipher, we follow the steps below:Step 1: Write the message and key in a tabular form as shown below. To keep the process organized, we use the letters of the key to label the columns.

To know more about operation Visit;

https://brainly.com/question/13927631

#SPJ11

Answer:

I don't think this is the right question

The object's maximum height during projectile motion is 78.4 m.

We need to know about the projectile motion to solve this problem. The projectile motion is known as parabolic motion and the velocity is divided by 2 axes.

vox = vo cosA

voy = vo sinA

where vox is initial velocity of x axis, voy is initial velocity of y axis, vo is initial velocity and A is the angle.

The total time taken during projectile motion is

t = 2(voy)/g

where t is total time and g is the gravitational acceleration (9.8 m/s²)

The maximum height also can be found using this formula

ymax = voy² / 2g

where ymax is the maximum height

From the question above, the given parameters are

A = 30⁰

t = 8 s

Find the initial velocity of y axis

t = 2(voy)/g

8 = 2 . voy / 9.8

voy = 39.2 m/s

Find the maximum object's height

ymax = voy² / 2g

ymax = 39.2² / 2 . 9.8

ymax = 78.4 m

Find more on projectile motion at: https://brainly.com/question/3329648

#SPJ4

This type of system is a third class lever. FEL where fulcrum, effort and load comes in an arrangement.

Lever  is a simple machine in which the fixed arms are arranged at a fixed point known as fulcrum. There are three types of lever system: first class Lever system, second class lever system and third class lever system. In the first class lever system there is an arrangement like the see saw. In this arrangement the fulcrum is in center and both the arms are like a seesaw. In the second class lever system, output force was between input force and fulcrum. In the third class lever system input force is between output force and fulcrum. 

To know more about lever visit

https://brainly.com/question/18937757

#SPJ4

Answer: 11900 J/min (full answer 11948,57 J/min)

Explanation:

1) First we want to find the total energy supplied to the 500g of water

Specific heat is the amount of thermal energy you need to supply to a sample weighing 1 kg to increase its temperature by 1 K.

Formula:

\(c = \frac{Q}{m T}\)

where

c - specific heat capacity (different for each substance) [J/kg K]

Q - Heat energy supplied [J]

m - mass [kg]

T - change in temperature [K]

mass in this question = 500g = 0.5kg

change in temperature = (70 - 30) = 40K (change in Celcius is equal to change in Kelvin)

specific heat capacity of water = 4182 J/kg K (this is just something you can look up in a formula sheet)

now we can rearrange the equation to get Q

\(Q = c*m*T\)

Q = 4182 * 0.5 * 40 = 83640 J  - this is total heat energy supplied

2) Now we can calculate heat supplied per minute

total energy/number of minutes

time (t) = 7 min

Q/t = 83640/7 = 11948,57 J/min = 11900 J/min (3sf)

Answer:

Net force = 21.12 N

angle for the force α = 45°

Explanation:

In this problem, we will take the left as the negative x-axis, the right as the positive x-axis, and the upward direction as the positive y-axis.

The 20 N force to the left has an x component of -20 N, and y component of 0 N

The 35 N force to the right has a x component of 35 N, and a y component of 0 N

The 15 N upwards has an x component of 0 N, and a y component of 15 N

We resolve the forces into the x and y components.

for the x component Fx

Fx = -20 + 35 + 0 = 15 N

For the y component Fy

Fy = 0 + 0 + 15 = 15 N

Net force Fn = \(\sqrt{Fx^{2} + Fy^{2} }\)

\(Fn = \sqrt{(15)^{2} + (15^{2} ) }\)

Net force Fn = 21.21 N

for the angle,

\(tan\alpha = \frac{Fy}{Fx} = \frac{15}{15}\)

\(tan\alpha = 1\)

α = \(tan^{-1}\) 1

angle for force α = 45°

Non-crystalline ceramics deform by viscous flow instead of dislocation motion, True

Ceramics are inorganic compounds. They can be non-metallic or solid materials that can be comprised of metals, non-metal or atoms. Ceramics are known are hard and strong in compression but weak in tension and shearing, these materials are also known for their brittle properties.

Ceramics exits in two major types, these are: crystalline ceramics and non-crystalline ceramics. Crystalline ceramics are those that can easily be shaped to situ, formed with powders and sintered to form a solid body.

On the other hand non-crystalline ceramics are more of glass and formed through melting. They have no regular crystalline structure, and also have no slip or dislocations in them

Non-crystalline ceramics when deforming, they allow ions to slide past each other, hence deforms by breaking and reforming bonds. A condition known as viscous flow.

Thus, the statement given is True, option a is correct.

Learn more about Non-crystalline ceramics here:

brainly.com/question/14300602

#SPJ11

In quantum mechanics, the wavefunction of a particle in an infinite well can be described as a standing wave, which is a superposition of two traveling waves propagating in opposite directions.

The standing wave function in an infinite well is given by:

ψ(x, t) = A sin(kx) e^(-iωt)

Using the Euler's formula, we can rewrite the sine function as a sum of exponential functions:

sin(kx) = (1/2i) * (e^(ikx) - e^(-ikx))

Substituting this back into the standing wave function, we have:

ψ(x, t) = A (1/2i) * (e^(ikx) - e^(-ikx)) * e^(-iωt)

Simplifying the expression, we obtain:

ψ(x, t) = (A/2i) * (e^(ikx - iωt) - e^(-ikx - iωt))

Now, we can define two traveling waves:

ψ_1(x, t) = (A/2i) * e^(ikx - iωt)

ψ_2(x, t) = (A/2i) * e^(-ikx - iωt)

The superposition of these two traveling waves gives us the standing wave function:

ψ(x, t) = ψ_1(x, t) + ψ_2(x, t)

Therefore, we have shown that the infinite well's standing wave function can be expressed as a sum of two traveling waves propagating in opposite directions.

By expressing the sine function in terms of exponential functions and defining two traveling waves, we can show that the infinite well's standing wave function can be written as the sum of these two traveling waves. This demonstrates the connection between standing waves and the superposition of traveling waves in the context of quantum mechanics.

Learn more about "wave function "  here:

brainly.com/question/32239960

#SPJ11

Considering the defintion of area of a rectangle and multiplication in scientific notation, you obtain:

Scientific notation is a quick way to represent a number using powers of base 10.

The numbers are written as a product:

a×10ⁿ

where:

Area of a rectangle

A rectangle is a flat geometric figure with four sides, of which two sides that are opposite parallel to each other have the same length and the remaining two have another length.

The area of a rectangle is calculated from the two different sides (a and b). It is the product of the two contiguous sides of the rectangle:

Area of a rectangle= a×b

where a and b are the measures of the two sides.

A rectangular piece of land with an area of 260,000 m² is 2,000 m long.

To write the area and length in scientific notation, the following steps are performed:

So, the rectangular piece of land with an area of 2.6×10⁵ m² is 2×10³ m long.

In this case, you know that a rectangular piece has:

Replacing in the definition of a rectangle:

2.6×10⁵ m²= width× 2×10³ m

2.6×10⁵ m²÷ 2×10³ m= width

To divide two numbers in scientific notation, you must divide the numbers that are not powers of 10 (what was previously called the "a" number). To divide the powers of ten, you must subtract the exponents. In this case:

Width= (2.6÷ 2)×10⁵⁻³ m

Width= 1.3×10² m

Finally, the width of the rectangular piece is 1.3×10² m.

In summary, you obtain:

Learn more about

area of a rectangle:

brainly.com/question/7690330

scientific notation:

brainly.com/question/18073768

#SPJ1

Answer:

Explanation:

The formula for this is

\(n_1sin\theta_1=n_2sin\theta_2\) where the index of refraction of air is 1.00. Filling in and solving for n2:

1.00sin(25) = n₂sin(13) and

1.00(.423) = n₂(.225) and

\(\frac{1.00(.423)}{.225}=n_2\) so

\(n_2=1.88\), choice D.

Answer:

68

Explanation:

now it

Answer:

See below

Explanation:

The windshield and the moth experience equal but opposite forces. (The magnitudes are the same)

My Dad used to say  "I'll bet he doesn't have the guts to do THAT again!"

The graph that corresponds to 0.1 s in one complete cycle is graph D.

option D is the correct answer.

The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.

Also, the period of a wave is the amount of time it takes for a wave to complete one wave cycle or wavelength.

From the given parameter, the coil rotates 10 times in one second. The period of the coil is calculated as;

Period = 1 s / 10

Period = 0.1 s

From the graphs, the only option that has one complete cycle in one second is option D.

Check option D, half cycle is 0.05 s and one full cycle is 0.1 s.

Learn more about period here: https://brainly.com/question/29813582

#SPJ1

Alpha and beta rays are deflected in opposite directions in a magnetic field because they have opposite charges.

Alpha particles are positively charged while beta particles are negatively charged. When they enter a magnetic field, they experience a force that is perpendicular to their direction of motion and to the direction of the magnetic field. The direction of this force depends on the charge of the particle. Since alpha and beta particles have opposite charges, they experience opposite forces and are deflected in opposite directions.

The magnitude of the force also depends on the velocity of the particle, which is why particles with different energies will be deflected differently. This property of magnetic fields is used in many applications, including in particle accelerators and in medical imaging techniques such as magnetic resonance imaging (MRI). The other options listed in the question are not correct, as the direction of the magnetic force does not depend on the spin of the particle or on the presence of nucleons.

To know more about magnetic field visit

https://brainly.com/question/28448397

#SPJ11

A force of 16 N to the west is applied to each object below , the object with greater mass and velocity have greater momentum. So, A 20 Kg object that is moving east at 10m/s.

Force is an external agent acting on a body, to change it from the state of rest or motion. There are various kinds of forces such as frictional force, magnetic force, nuclear force etc.

In physics, force is the product of mass and acceleration of the body. Greater mass results greater force needed to be applied on the object to make it move or stop.

Momentum is the product of mass and velocity. Thus, as mass or velocity or both increases, momentum of the object increases. Hence the larger object moving faster will gain greater momentum.

Here, option C is the correct answer.

Learn more on momentum,

brainly.com/question/24030570

#SPJ5

Weather forecasts are made using barometers. An air pressure gauge, or barometer When the barometer reads "rising," the air pressure is rising; when it reads "falling," the air pressure is lowering.

Barometric pressure, to put it simply, is the measurement of air pressure in the atmosphere, more particularly, the measurement of the weight exerted by air molecules at a certain location on Earth.

barometer, a tool for calculating atmospheric pressure. A barometer may also be used to determine height since air pressure varies with elevation above or below sea level. Mercury and aneroid barometers are the two primary varieties.

To know more about barometers visit:

https://brainly.com/question/26741242

#SPJ4