what is the average metabolic rate in watts of a man who metabolizes 13,600 kj of food energy in one day? 658.9 w (b) what is the maximum amount of work in joules he can do without breaking down fat, assuming a maximum efficiency of 22.0%? (enter the maximum work he can do in one day.) j (c) compare his work output with the daily output of a 187 w (0.250-horsepower) motor. wmotor wman

The airship’s velocity with respect to Earth is -60.1°  west of north.

Velocity is the speed at which something moves in a particular direction.

Vaw = 55.0 km/h, north

Vwe = 40.0 km/h at 17.0°

north of west,

Vae = Vaw + Vwe

Vx, ae = Vx, aw + Vx, we = Vwe (cos θwe)

Vy, ae = Vy, aw + Vy, we = Vaw + Vwe(sin θwe)

θwe = 180.0° − 17.0° = 163.0°

Vx, ae = (40.0 km/h)(cos 163.0°) = −38.3 km/h

Vy, ae = 55.0 km/h + (40.0 km/h)(sin 163.0°) = 55.0 km/h + 11.7 km/h

          =  66.7 km/h

Vae = √(Vx, ae)²+(Vy, ae0)²

       = √(−38.3km/h)²+(66.7km/h)²

       = √ 1. 47×10³ + 4.45×10³

       = 5. 92×10³km²/h²

       = 76.9 Km/ hr.

θ = tan⁻¹ ( Vy,ae / Vx, ae)

θ = tan⁻¹ ( 66.7 / -38.3 )

θ = −60.1°  west of north

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Answer:

Explanation:

For refraction , the formula is

sin i / sin r = μ₂ / μ₁

where light is travelling from medium 1 to 2 having refractive index of μ₁ and μ₂ . Angle of incidence in medium 1 is i and angle of refraction in medium 2 is r .

Here i = 70°, r = 37°

μ₁ = 1.8 ,μ₂ = ?

sin70 / sin 37 = μ₂ / 1.8

.939 / .602 = μ₂ / 1.8

1.56 =  μ₂ / 1.8

μ₂ = 2.81 .

The value of refraction index for the second medium will be  \(\mu_2=2.16\)

Every material has a different refractive index. The refracted index of any material shows that the light is refracted by how much angle.

So like for water its value will be different also for glass its value will be different.

Now it is given in the question that

Angle of incidence \(i=70^o\)

Refractive index of the first medium \(\mu_1=1.8\)

Angle of refraction \(r=37^o\)

Now from snells law

\(\dfrac{Sin \ i}{Sin \ r} = \dfrac{\mu_2}{\mu_1}\)

\(\dfrac{Sin70}{Sin37} = \dfrac{\mu_2}{1.8}\)

\(\mu_2= \dfrac{Sin70\times1.8}{Sin37}\)

\(\mu_2=2.16\)

Thus the value of the refraction index for the second medium will be  \(\mu_2=2.16\)

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Answer:Electromagnetic force, like all forces, is measured in Newtons. Electrostatic forces are described by Coulomb’s law, and both electric and magnetic forces are covered by the Lorentz force law. However, Maxwell’s four equations provide the most detailed description of electromagnetism.

Explanation:

Answer:

attractive, repulsive, produces light & electricity

Explanation:

edge 2021

a. The third sphere must be placed between A and B, closer to A.

b.  the third sphere must be placed at 175 cm from the first sphere.

Since

Using Newton's law of universal gravitation, the net force on the first sphere on the third sphere is F = mAmC/x² where x = distance between sphere C and A

Also, the Force of attraction between there second sphere and the third sphere is F' = mBmC/(R - x)² where R = distance between mA and mB and x = distance between mA and mC.

Since the net force must be zero, then

F = F'

mAmC/x² = mBmC/(R - x)²

So, (R - x)²/x² = mB/mC/mAmC

(R - x)²/x² = mB/mA

Substituting the values of mA and mB into the equation, we have

(R - x)²/x² = 7/2

(R - x)²/x² = 3.5

(R - x)/x = √3.5

(R - x)/x = 1.87

R - x = 1.87x

R = x + 1.87x

R = 2.87x

x = R/2.87

x = 0.35R

Since x = 0.35R, the third sphere must be placed between A and B, closer to A.

Since the position of the third sphere is

So, x = 0.35 × 500 cm

x = 175 cm

So, the third sphere must be placed at 175 cm from the first sphere.

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Answer:

The power of the car, the gear ratio, weight of the car, aerodynamics of the car, grip of the tires on the road, calorific value of the fuel used, and friction would affect the speed of the car.

Answer:

S1

Explanation:

Has to be S1. This is pretty glaring to me. It's said from the question that the chemical reaction that took place is given by the following

S1 + G = S2, with S2 being an offspring of the first S1. When S1 got reacted, it broke down into S2, so, this only confirms that both S1 and E2 are S3 are compounds.

Answer:

The force that attracts earth to an object is equal and opposite the force that earth exerts on an object. As the climber exerts a force downward, the rope supplies a reaction force that is directed upward. When the reaction force is greater than the climber's weight, the climber accelerated upward.

Explanation:

The climber pulling downward on the rope can be considered as an action. The upward movement of the climber is the reaction but in the opposite direction. Therefore, the climber will move upward by pulling the rope in a downward direction.

Force can be described as a push or pull acting on a body resulting in its interaction with another body. Force can be classified into two categories which are contact forces such as frictional force and other are non-contact forces such as gravitational force.

According to Newton's third law of motion, when two bodies interact, they exert force on each other, and these forces are called action and reaction pairs.

Newton’s third law of motion states that when one object exerts a force on the other object, the first object experiences a force of the same magnitude in the opposite direction.

During climbing a rope there are two types of forces acts one is the gravitational force downward due to the weight of the climber and another is the tension acts in the upward direction.

If the climber of mass 'm' is moving upward with acceleration 'a' then the tension in the rope will be:

T = mg + ma

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A ray of light travels from air to glass at an angle of incidence of 21∘, the angle of refraction is 24∘. So, 1.52 is the refractive index of glass.

The refractive index of glass can be calculated using Snell's Law, which states that the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the velocities of light in the two media.

The refractive index of glass can be calculated as follows:

n = sin(i) / sin(r)

where n is the refractive index, i is the angle of incidence, and r is the angle of refraction.

Using the given values, we can substitute them into the equation:

n = sin(21∘) / sin(24∘)

n ≈ 1.52

Therefore, the refractive index of glass is approximately 1.52.

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Thus, the car travels 500 m after starting. Hence, the correct option is (c) 500 m.

Given that a car starting from rest accelerates at a constant 2.0 m/s² for 10 s, it then travels with constant speed it has achieved for another 10 s and finally slows to a stop with constant acceleration of magnitude 2.0 m/s². We need to determine how far it travels after starting.

To determine the distance traveled, we have to calculate the total distance traveled in each of the three phases and then add them together. Let's calculate each phase separately:

Phase 1: From rest, the car is accelerating at 2.0 m/s² for 10 seconds. We know that, Acceleration, a = 2.0 m/s²Time taken, t = 10 s Initial velocity, u = 0 m/s Distance, S = ?The formula for the distance covered during acceleration is given by, S = ut + 1/2at²S = 0 + 1/2 × 2.0 m/s² × (10 s)²S = 100 m So, the distance covered in Phase 1 is 100 m.

Phase 2: The car travels at constant speed for 10 seconds. The car continues to move with a constant speed for 10 seconds. Distance covered during the constant speed phase = Speed × Time As there is no acceleration during this phase, speed = acceleration × time + initial velocity = 2.0 m/s² × 10 s + 0 = 20 m/s Therefore, the distance covered in Phase 2 is 20 m/s × 10 s = 200 m.

Phase 3: Finally, the car comes to a stop with a deceleration of 2.0 m/s² for some time, say t seconds.

Distance covered during the deceleration phase, Acceleration, a = −2.0 m/s², Time taken, t = ?Initial velocity, u = 20 m/s Distance, S = ?

The formula for the distance covered during deceleration is given by:

S = ut + 1/2at²S = 20 m/s × t + 1/2 × (−2.0 m/s²) × t²S = 20t − t² m

Now, using the third equation of motion, we have,

v² = u² + 2

as where v = 0 m/s (final velocity), u = 20 m/s (initial velocity), ma = −2.0 m/s² (deceleration)

S = ?

Substituting the values in the above equation, we get:

0 = (20 m/s)² + 2 × (−2.0 m/s²) × S

Solving for S,S = 200 m

Therefore, the distance covered in Phase 3 is 200 m.

Finally, the total distance covered by the car can be obtained by adding the distances covered in the three phases.

Distance covered = 100 m + 200 m + 200 m = 500 m.

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Answer:

The Correct Answer is Left Court

Explanation:

The server serves from the left court.

If the serving side wins a rally, the serving side scores a point and the same server serves again from the alternate service court.

Answer:

I would say that mechanical energy is found.

Explanation:

Hope this helps!

To design a highpass FIR digital filter using a sampling frequency of 30 Hz and a cut-off frequency of 10 Hz, with a Hamming window and a filter length of 5, we can analyze the input signal, x[n] = [1, 9, 0, 0, 1, 6], and calculate the output signal by applying the designed filter.

To design a highpass FIR digital filter, we follow these steps:

1. Determine the filter coefficients: Using the desired cut-off frequency and the filter length, n = 5, we can calculate the filter coefficients using appropriate filter design methods such as the windowing technique. In this case, we will use the Hamming window.

2. Apply the filter: Convolve the input signal, x[n], with the filter coefficients. Each output sample is obtained by taking the weighted sum of the input samples and corresponding filter coefficients.

3. Plot the output signal: After applying the filter, plot the calculated output signal to visualize the effect of the filter on the input signal. The output signal will represent the filtered version of the input signal, with unwanted components attenuated.

By designing and applying the highpass FIR digital filter using the given specifications and analyzing the input signal, x[n], we can observe the filtered output signal, which will help in removing unwanted components and preserving the desired frequency content.

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Answer:

Dalton's ideas proved foundational to modern atomic theory. However, one of his underlying assumptions was later shown to be incorrect. Dalton thought that atoms were the smallest units of matter-−minustiny, hard spheres that could not be broken down any further. This assumption persisted until experiments in physics showed that the atom was composed of even smaller particles. In this article, we will discuss some of the key experiments that led to the discovery of the electron and the nucleus.

J.J. Thomson and the discovery of the electron

In the late 19^{\text{th}}19  

th

19, start superscript, start text, t, h, end text, end superscript century, physicist J.J. Thomson began experimenting with cathode ray tubes. Cathode ray tubes are sealed glass tubes from which most of the air has been evacuated. A high voltage is applied across two electrodes at one end of the tube, which causes a beam of particles to flow from the cathode (the negatively-charged electrode) to the anode (the positively-charged electrode). The tubes are called cathode ray tubes because the particle beam or "cathode ray" originates at the cathode. The ray can be detected by painting a material known as phosphors onto the far end of the tube beyond the anode. The phosphors spark, or emit light, when impacted by the cathode ray.

A diagram of a cathode ray tube.

A diagram of a cathode ray tube.

A diagram of J.J. Thomson's cathode ray tube. The ray originates at the cathode and passes through a slit in the anode. The cathode ray is deflected away from the negatively-charged electric plate, and towards the positively-charged electric plate. The amount by which the ray was deflected by a magnetic field helped Thomson determine the mass-to-charge ratio of the particles. Image from Openstax, CC BY 4.0.

To test the properties of the particles, Thomson placed two oppositely-charged electric plates around the cathode ray. The cathode ray was deflected away from the negatively-charged electric plate and towards the positively-charged plate. This indicated that the cathode ray was composed of negatively-charged particles.

Thomson also placed two magnets on either side of the tube, and obser

Explanation:

(a) The location of the final image beyond the converging lens is 12.67 cm.

(b) The magnification of the final image is -0.82, indicating that it is inverted with respect to the object.

To find the location of the final image, we can use the lens formula for thin lenses, which is given by 1/f = 1/v - 1/u, where f is the focal length, v is the image distance, and u is the object distance.

For the diverging lens, u = -27 cm (since the object is in front of the lens), and f = -17 cm (negative for diverging lens). Using the lens formula, we find v1 = -153 cm.

For the converging lens, the object distance is -11 cm (since it is behind the diverging lens), and f = 17 cm. Using the lens formula again, we find v2 = 12.67 cm.

The magnification of the final image can be calculated using the formula magnification = v2/v1, which gives us -0.82. The negative sign indicates that the image is inverted with respect to the object.

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Answer:

option B...

they represent different concept...

i hope this will answer your question

According to Boyle's Law, there is an inverse relationship between pressure and gas volume.

Therefore, option b. There is an inverse relationship between pressure and gas volume is the correct answer.

Boyle's Law is defined as the principle that explains the relationship between the volume and pressure of a gas at a constant temperature. It is formulated by Robert Boyle, an Irish physicist and chemist, in the 17th century. Boyle's Law states that the pressure of a given amount of gas is inversely proportional to its volume, provided the temperature remains constant.

Mathematically, it can be expressed as

P₁V₁ = P₂V₂,

where P₁ and V₁ are the initial pressure and volume of the gas, respectively, and P₂ and V₂ are the final pressure and volume of the gas. Therefore, option b. There is an inverse relationship between pressure and gas volume is the correct answer.

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Answer:

1.  F = M x A

2. Force  

3. 2nd Law: Force

4. a, b, c (in order)

5. 3rd Law: Action and Reaction

6. b, c, a (in order)

7. 1st Law: Inertia

1. F=ma

2. Force

3. Second law

4. a)first

b)second

C) third

5. Third

6. a) second

b) third

C) first

7. First

The scenario in which thermal energy is being transferred by radiation is when a chick sits beneath a bright lamp. Option C is correct answer.

Radiation is a method of heat transfer that occurs through electromagnetic waves. It does not require a medium for transfer and can occur even in a vacuum. In the given scenario, the bright lamp emits light and heat in the form of electromagnetic waves, including infrared radiation. When the chick sits beneath the lamp, it absorbs the radiant heat energy, leading to an increase in its temperature.

In the other scenarios mentioned:

A lava lamp lit from below involves heat transfer by convection as the heated liquid rises and cools at the top.

A steaming mug of brown liquid sitting on snow involves heat transfer by conduction as the heat is conducted from the hot mug to the cold snow.

An iron being used on a wrinkled shirt involves heat transfer by conduction as the hot iron comes into direct contact with the shirt fabric, transferring heat.

Therefore, it is the scenario of a chick sitting beneath a bright lamp where thermal energy is being transferred by radiation.

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The complete question is

In which scenario is thermal energy being transferred by radiation?

A.  A lava lamp lit from below.

B. A steaming mug of brown liquid sits on snow.

C. A chick sits beneath a bright lamp.

D. An iron is used on a wrinkled shirt.

The scientific understanding is constantly evolving, and these statements may be subject to change as new observations and theories are developed.

Based on current scientific understanding, there are two false statements in the given options:

The statement that "a starburst galaxy will be dimmer than normal" is false. In fact, starburst galaxies are often very bright because they are undergoing a rapid burst of star formation, which produces a large amount of light.

The statement that "spiral galaxies are more likely to be near the middle of dense star clusters" is also false. Spiral galaxies are actually more commonly found in the outskirts of galaxy clusters, rather than in the dense central regions.

The other statements are true based on current scientific knowledge. Starburst galaxies are known to undergo faster star formation, elliptical galaxies are indeed more likely to be found near the edges of dense star clusters, and measuring the amount of helium in the universe can allow us to estimate the density of normal matter in the universe. Additionally, hydrogen and helium do make up a small fraction of the mass required to reach critical density in the universe.

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Explanation:

KE = ½ mv²

130,048 J = ½ m (16 m/s)²

m = 1016 kg

According to the question, If you drop a grand piano down a mine shaft, you would get a flat note.

This humorous response plays on the double meaning of the word "note." In the context of music, a "flat note" refers to a musical tone that is lower in pitch than the corresponding natural note. However, in this context, the phrase "flat note" is used to suggest that the grand piano would be damaged or destroyed upon impact with the ground at the bottom of the mine shaft. It is a lighthearted play on words rather than a literal answer.

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Answer:

true

Explanation:

Energy stored in the nuclei of atoms can be used to generate electricity. ... Most of the energy of food is converted to heat.

Answer:

B

Explanation:

because that includes games and sports

Answer:

La materia es la sustancia de la que está hecho todo material. En física, el sistema es una de las propiedades de la materia. Se puede transferir entre objetos y convertir en forma. No se puede crear ni destruir.

espero que te ayude!

Answer:

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object

Answer:

It’s actually A) Inversely

Explanation:

Amphibians retain a set of gills their whole lives that help them to breathe in the water. So, the correct option is D.

Amphibians are defined as the class of cold-blooded vertebrates which is made up of frogs, toads, salamanders, newts, and caecilians. All amphibians that spend part of their lives in water and part of their lives on land.

Amphibians are born with gills, and some outgrow them when they become adults while others retain them for their entire lives.

Thus, the correct option is D.

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Answer:

The length of the load arm is 3 m

The length of the effort arm is 15 m

Spoons and scissors are class 1 levers

Explanation:

The data given in the force diagram of the lever (machine) are;

The length of the lever = 18 m = (Length of effort arm) + (Length of load arm)

The force applied at the effort = 100 N

The load lifted by the lever = 500 N

The mechanical advantage, MA is given as follows;

MA = Load/Effort = (Length of effort arm)/(Length of load arm)

∴ MA = 500 N/(100 N) = 5

Let 'x' represent the length of the effort arm, and let 'y', represent the length of the load arm, we have;

x + y = 18...(1) (given)

MA = 5 = x/y

∴ x = 5·y...(2)

Substituting the value of 'x' in equation (1) with x = 5·y gives;

x + y = 5·y + y = 6·y = 18

∴ y = 18/6 = 3

y = 3

The length of the load arm, y = 3 m

x = 5·y = 5 × 3 = 15

x = 15

The length of the effort arm, x = 15 m

When lifting food with a spoon, the fulcrum, which can be taken as the edge of the plate or the supporting finger, is in between bowl of the spoon and the point of application of the thumb towards the extremities of the spoon handle

Therefore a spoon is a class 1 lever

The pivot of a scissors is in between the item being cut (the load) and the holes where the finger applies an effort

Therefore, a scissors is a class 1 lever.

Answer:

The red substance was ionic. The white substance was molecular.

Explanation:

B.C.

If Clarisse had three substances, A white substance was waxy and malleable. A red crystal was translucent, and it cracked when she hit it with a hammer. A silver substance could be flattened by hitting it with a hammer, but it did not crack. the two true statements are the red substance was ionic and the white substance was molecular. therefore the correct option is B and D.

The chemical compound is a combination of two or more either similar or dissimilar chemical elements, for example, H₂O is a chemical compound made up of two oxygen atoms and a single hydrogen atom.

These chemical compounds are formed because of different types of bonds between the constituent's elements, the chemical bonds are mainly ionic bonds, covalent bonds,s, and hydrogen bonds.

Ionic bonds are formed due to the transfer of electrons between two bond-forming pairs differentiated by their electronegativity.

Covalent bonds are formed by the sharing of electrons. Generally, organic compounds are formed as the reason for covalent bonds.

As the white substance is waxy and malleable and the silvers substance could be flattened by hitting with a hammer but it did not crack it means the white substance is a metallic material that is molecular in nature , the red crystal is translucent and cracked when hit with a hammer this means it is ionic in nature.

Thus, the correct options are option B and option D.

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Answer:Hydrogen fusion in a shell outside the core generates enough thermal pressure to push the upper layers outward.

Explanation:

Answer: a = 5.4 m/s^2

Explanation:

a = Δv/Δt

a = (6.5 m/s)/(1.2 s)

a = 5.4 m/s^2