when walking 78kg person expands 400W on a level treadmill at a speed of 7.2 km 1h when the tread mil is inclined wlo Changing the speed, the persons expended power ↑ to 600W What is the angle of in

Answer:

B

Explanation:

Density = mass / volume

Less dense objects float to the surface so if the liquid becomes 1000 kg/m3 then it is the densest thing in the mixture, except for Q which has a density = to that of the water so it will stay in place around the middle, since the other two are more dense they will go to the bottom of the container.

To calculate how long it takes for a pulse to cover a distance of 25cm, we can use the formula:

time = distance / speed

In this case, the distance is 25cm and the speed is 0.5m/s, so we can plug in these values:

time = 25cm / (0.5m/s)

To convert cm to m we divide the distance by 100.

time = 25 / 100 m / 0.5m/s

time = 0.25s

So it takes 0.25 seconds for the pulse to cover a distance of 25cm, when the speed of the pulse is 0.5m/s.

Answer: 558 meters in 31 seconds.

Explanation:

You simply do 18*31 because every single second for thirty one seconds, the girl is going 18 meters.

Therefore, at this rate, she would ride about 558 meters in 31 seconds.

Answer:

558 m

Explanation:

The formula for distance, given speed and time, is D=ST. When you plug the numbers into this, D=(18)(31), and 18 times 31  *puts in calculator*  is 558.

The speed is in meters per second, so meters would be your unit.

So, the answer is 558 m.

Hope I helped!!! :)

Answer: The molecules in gases are different from other states of matter

Explanation:

The molecules in gases are different from other states of matter because unlike, for example, a solid, they move around freely and are much more spread apart. A gas can fill up any container, but once the container is unsealed, the gasses will immedietly be let out. Gases can be compressed much more easily than a solid or a liquid.

Answer:

See the explanation below.

Explanation:

This analysis can be easily deduced by means of Newton's second law which tells us that the sum of the forces or the total force on a body is equal to the product of mass by acceleration.

∑F = m*a

where:

F = total force [N]

m = mass [kg]

a = acceleration [m/s²]

We must clear the acceleration value.

\(a=\frac{F}{m}\)

We see that the term of the mass is in the denominator, so that if the value of the mass is increased the acceleration decreases, since they are inversely proportional.

Answer:

C. It cause winds to shift north and south.

Explanation:

The Coriolis Effect describes the force generated by the Earth's eastward rotation, which results in air movement being deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

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Answer:

Mass , this is the answer because mass allows objects of any size to be moved depending on the force of the impact , push or turn

When a rocket ship accelerating in outer space runs out of fuel, it will no longer accelerate. This is because acceleration requires a force, and in the absence of fuel, there is no force to continue propelling the rocket forward.

According to Newton's First Law of Motion, an object at rest will remain at rest, and an object in motion will remain in motion with a constant velocity unless acted upon by an external force. Therefore, when the rocket ship runs out of fuel, it will continue to move at a constant velocity in the direction it was traveling at the moment the fuel was depleted. It will not slow down or stop unless acted upon by an external force, such as gravity or air resistance, if present.

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Answer:

45 N to the right possibly?

U₂ = 0 V. The lamp (L₂) is short circuited, meaning that there is no resistance between its terminals. As such, the voltage across its terminals must be zero.

Resistance is a concept in physics that measures the opposition to the flow of electric current, heat, light, sound, or any other form of energy or matter. It is the measure of how much an object, material, or system resists the flow of electric current, heat, light, sound, or any other form of energy or matter.

a) U₂ = 0 V. The lamp (L₂) is short circuited, meaning that there is no resistance between its terminals. As such, the voltage across its terminals must be zero.

b) U₁ = 12 V. Since the generator is providing a constant voltage of 24 V across its terminals, the voltage across the terminals of (L₁) will be half of this, i.e. 12 V. As the lamps are identical, the current I' through the circuit will also be 0.6 A.

c) (L₁) may burn out due to the large amount of current it is carrying. If the current is too high, it may exceed the rated capacity of the lamp and lead to its failure.

d) (L₁) does not burn out because the circuit includes a fuse. The fuse is designed to break the circuit in the event of an excessive current, thus protecting the lamp from burning out. When the fuse blows, the circuit is broken and the lamp will be off.

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Answer:

Wood helps in home insulating because logs have both a proper structure and insulation. Since the log has so much heat storage, its huge mass will have a lot more thermal energy than other materials for insulating.

The statement (b) is true - the maximum deflection after buckling is closer to the pinned end.

When a long column is loaded in compression until buckling occurs, the column will deflect and buckle out of its original shape. The point of maximum deflection will not be at the midpoint of the column, but rather closer to the pinned end.

This is because the pinned end can move and rotate, allowing for more deflection than the fixed end. The deflection curve is not typically s shaped, but rather a single curve that reaches a maximum deflection point before leveling off. It is important to note that the column experiences deflection during buckling as the deflection is a sign that buckling has occurred.

The amount of deflection depends on the length, cross-sectional area, and material properties of the column, as well as the magnitude of the compressive load applied.

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If three vectors forces are in equilibrium , then the vector sum of these forces is equal to the zero vector and the sum of any two vectors will be equal to the magnitude of the other vector

Let there are three vectors

F1 , F2 and F3

If are in equilibrium ,

F1 + F2 + F3 = 0

| F1 + F2 | =  | -F3 |

So , the sum of any two vectors will be equal to the magnitude of the other vector

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Explanation:

Wouldn't this just be 90+80 meaning the answer would be 170?

Answer:

It produces 1000Ω.

Explanation:

You have to apply Voltage formula, V = I × R :

V = I × R

6 = 0.006 × R

R = 6 ÷ 0.006

R = 1000Ω

We have that from the Question"How much resistance allows 6V battery to produce a current of 0.006 amps?" it can be said that  How much resistance that allows 6V battery to produce a current of 0.006 amps is

R=1000 ohms

From the Question we are told

How much resistance allows 6V battery to produce a current of 0.006 amps?

Generally the equation for Resistance mathematically given as

\(R=\frac{V}{I}\\\\\Therefore\\\\R=\frac{V}{I}\\\\R=\frac{6}{0.006}\\\\\)

R=1000 ohms

Therefore

How much resistance that allows 6V battery to produce a current of 0.006 amps is

R=1000 ohms

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Answer:

7.35..kg

Explanation:

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Answer: Both are difference in angles.

Explanation:

Both are difference in angles.

If two waves are moving with same angles with time the they are called in phase, if moving with different angles with time then they called as out of phase.

Answer:

the ans is left

Explanation:

because the LHS has very les frictin acting on it

Answer:

Inertia.

Explanation:

Inertia can be defined as the tendency of an object or a body to continue in its state of motion or remain at rest unless acted upon by an external force.

In physics, Sir Isaac Newton's first law of motion is known as law of inertia and it states that, an object or a physical body in motion will continue in its state of motion at continuous velocity (the same speed and direction) or, if at rest, will remain at rest unless acted upon by an external force.

For example, the inertia of an object such as a shopping cart is greatly dependent or influenced by its mass; the higher quantity of matter in a shopping cart, the greater will be its tendency to continuously remain at rest.

Yes, PNS system causes more frequent depolarizations to the SA (Sinoatrial) node.

The PNS (Parasympathetic Nervous System) is responsible for decreasing the heart rate. It does so by releasing acetylcholine, which stimulates the M2 muscarinic receptors found in the SA node. When acetylcholine binds to M2 receptors, it opens potassium channels, leading to hyperpolarization of the SA node cells.As a result, the pacemaker potential threshold increases and requires more time to reach the threshold for depolarization, thus reducing the heart rate. Therefore, by decreasing the potassium ion permeability of the ECF, it slows the heart rate, resulting in fewer depolarizations in the SA node, causing a lower heart rate.

In summary, the parasympathetic nervous system (PNS) causes more frequent depolarizations to the SA node. The PNS slows down the heart rate, but this does not mean that the pacemaker potential is reduced. Instead, the pacemaker potential is hyperpolarized, increasing the threshold for depolarization. Thus, fewer action potentials reach the threshold, and heart rate is decreased. So, the decrease in potassium permeability in the ECF and an increase in the parasympathetic nervous system causes hyperpolarization of the SA node and increases the threshold for depolarization. This, in turn, leads to fewer depolarizations in the SA node, causing a slower heart rate.

Therefore, it can be concluded that the PNS system causes more frequent depolarizations to the SA node and decreases heart rate by increasing the threshold for depolarization, which is accomplished by hyperpolarizing the pacemaker potential.

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Answer:

sq root 2 sec.... same as initial speed

Answer:

T = 40.08 °C

Explanation:

Given:

m₁ = 0.33 kg, mass of iron horseshoe

T₁ = 693°C, initial temperature of horseshoe

c₁ = 448 J/(g-°C), specific heat

m₂ = 24 kg, mass of water

T₂ = 39°C, initial temperature of water

c₂ = 4186 J/(g-°C), specific heat of water

let T be the equilibrium temperature.

For energy balance,

m₁c₁(T₁ - T) = m₂c₂(T - T₂)

(0.330) * (448) * (693 - T) = (24) * (4186) * (T - 39)

147.84 * (693 - T) = 100,464 * (T - 39)

102,453.12 - 147.84T = 100,464T - 3,918,096

102,453.12 + 3,918,096 = 100,464T - 147.84T

4020549.12 = 100316.16T

T = 40.08 °C

Answer:

tura paulo

Explanation:

sry if im wrong ;)

Answer:

Torque Of a Force: If The Force has tendency or Bends The Body about Longitudinal axis of the Body it is Torque. Moment Of a Force :If Force has Tendency to or Rotates the Body about Transverse asis the Body It is Moment .

Explanation:

Carbohydrates: Organic compounds composed of carbon, hydrogen, and oxygen, often in a 1:2:1 ratio. They are a major source of energy and provide structural support.Lipids: Hydrophobic biomolecules that include fats, oils, and waxes. They are essential for energy storage, insulation, and forming cell membranes.

Carbohydrates are organic compounds that serve as a major source of energy and provide structural support. They include sugars, starches, and fibers.

Lipids are hydrophobic molecules that are essential for energy storage, insulation, and forming cell membranes. They include fats, oils, phospholipids, and steroids.

Proteins are complex biomolecules composed of amino acids. They play diverse roles in the body, including enzyme catalysis, structural support, transport of molecules, immune response, and cell signaling.

Nucleic acids are biomolecules responsible for storing and transmitting genetic information. DNA (deoxyribonucleic acid) stores genetic instructions, while RNA (ribonucleic acid) is involved in protein synthesis.

In summary, carbohydrates provide energy and structural support, lipids are involved in energy storage and membrane formation, proteins perform various functions in the body, and nucleic acids store and transmit genetic information.

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The SI base units have the dimensions of: length, mass and time.

The SI base units are the internationally accepted system of units of fundamental quantities.

These SI base units consist of system of units of measurement starting with seven base units, which are as follows:

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The bird has the most potential energy when it is at the highest point of its dive into the ocean.

1. Potential energy is the energy possessed by an object due to its position or state.

2. In this case, we are considering the potential energy of a bird diving into the ocean.

3. The potential energy of an object depends on its height and mass.

4. When the bird is at the highest point of its dive, it has the maximum potential energy.

5. As the bird dives deeper into the ocean, its height decreases, resulting in a decrease in potential energy.

6. At the moment the bird reaches the surface of the water, its potential energy is at its minimum, as it is at its lowest height.

7. The potential energy is converted into kinetic energy as the bird accelerates towards the water.

8. Kinetic energy is the energy possessed by an object due to its motion.

9. When the bird enters the water, its potential energy is completely converted into kinetic energy.

10. The bird continues to possess kinetic energy as it moves through the water.

11. Once the bird comes to a stop in the water, its kinetic energy is reduced to zero.

12. At this point, the bird's potential energy is also zero, as it is at its lowest height and not in motion.

13. Therefore, the bird has the most potential energy when it is at the highest point of its dive into the ocean.

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