A 54kg female athlete participating in heaving training requires a minimum of how much protein daily O 108g O 92g O 432g O 549

Answer:

4/5=n

Explanation:

hah I have the same homework :0

Answer:

102.04kg

Explanation:

(1000kg*m/s^2)/(9.8 m/s^2)

Answer:

C

Explanation:

Got it right on the test :)

Please mark brainliest!! <3

Answer:

Explanation:

4375J

Answer:

smaller one

Explanation:

even though he is moving quicker doesn't mean he will be packing more force in the collision

38 nm A waveform signal that is carried in space or down a wire has a wavelength,

A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles. This length is typically defined in wireless systems in meters (m), centimeters (cm), or millimeters (mm) (mm).

The wavelength of the wave is the distance covered by it throughout a whole oscillation. A meter is the wavelength's SI unit (m).

*v=c/λ

v: 7.8 × 10^15 Hz c: 3.00*10^8 λ:?

7.8 × 10^15 Hz = 3.0010^8/λ

λ = 3.0010^8 m/s /7.8 × 10^15

λ = 3.8 10^-8

The calculated wavelength is in unit of meter. use the relationship between meter and nanometer to convert to the correct units.

3.8 10^-8 m (1nm/ 110^-9m )

= 38 nm

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Excessive forward lean during the overhead squat assessment is likely caused by poor core stability or ankle mobility issues.

Excessive forward lean during the overhead squat assessment is a common problem that can be caused by a number of factors, including poor core stability, weak glutes, tight hip flexors, and ankle mobility issues.

When the core muscles are not properly engaged, the torso may lean forward to compensate, causing the individual to lose balance and stability. Similarly, when the ankle joint is restricted in its range of motion, the knees may be forced forward, which can cause the torso to lean forward as well.

Addressing these issues through targeted exercises and stretching can help improve overall movement quality and reduce the risk of injury.

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Answer:

the liquid water is changing to gaseous water, or steam.

Explanation:

Please mark me as brainliest

Explanation:

the distribution of the molecules will change throughout the new phase

The gold foil experiment showed that the atom consists of the small, massive, positively charged nucleus.

Who conducted the experiment that showed that atoms were mostly made up of empty space?

Rutherford perform an experiment which shows that the atom is mostly composed of empty space with a very small, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom and this experiment is known is Rutherford's gold foil experiment. The atom is mostly composed of empty spaces. The size of the atom is round about 1/100,000.

So we can conclude that: The gold foil experiment showed that the atom consists of the small, massive, positively charged nucleus.

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The energy needed to heat the water and the copper tank to 55°C is 25,083,080 J.

Q = mCΔT

m = 150 kg (mass of water)

C = 4.18 J/g°C (specific heat capacity of water)

ΔT = 55°C - 15°C = 40°C (change in temperature)

Using the formula, we get:

\(Q_{water}\) = mCΔT

\(Q_{water}\) = (150 kg) x (4.18 J/g°C) x (40°C)

\(Q_{water}\) = 25,080,000 J

m = 20 kg (mass of tank)

C = 0.385 J/g°C (specific heat capacity of copper)

ΔT = 55°C - 15°C = 40°C (change in temperature)

Using the formula, we get:

\(Q_{tank}\) = mCΔT

\(Q_{tank}\) = (20 kg) x (0.385 J/g°C) x (40°C)

\(Q_{tank}\)= 3080 J

Finally, we can add the two energies together to get the total energy needed:

\(Q_{total}\) = \(Q_{water}\) \(+\) \(Q_{tank}\)

\(Q_{total}\) \(= 25,080,000 J + 3080 J\)

\(Q_{total}\) \(= 25,083,080 J\)

Energy is a fundamental concept that refers to the ability of a physical system to do work or cause a change. It is a scalar quantity that is measured in units of joules (J) in the International System of Units (SI). According to the law of conservation of energy, energy cannot be created or destroyed, but it can be transformed from one form to another. This means that the total amount of energy in a closed system remains constant.

Energy is a crucial concept in many areas of physics, including mechanics, thermodynamics, and electromagnetism. Understanding energy is essential for understanding how the physical world works, and it has numerous applications in technology and everyday life, from powering our homes and vehicles to the production of food and the functioning of our bodies.

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The correct matches are as follows:

Metals are elements which form positive ions by loss of electrons.

Metals are usually shiny, malleable and ductile.

Metal atoms combine are bonded to each other by metallic bonds.

Electron sea theory describe how mobile electrons  surround positive atomic nucleus.

Alloys refer to a mixture of metals.

In conclusion, metal atoms form metallic bonds.

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The direction of the magnetic field that allows a conducting wire to levitate is a magnetic field pointing directly downward.

When a conducting wire carries current and is placed in an external magnetic field, it experiences a force known as the Lorentz force. The Lorentz force on a current-carrying wire is given by the equation:

F = I * L * B * sin(theta)

Where:

- F is the force on the wire

- I is the current flowing through the wire

- L is the length of the wire

- B is the strength of the magnetic field

- theta is the angle between the wire and the magnetic field

For the wire to levitate, the force on the wire should be equal to the force due to gravity, but in the opposite direction. In other words, the upward force on the wire should counterbalance the downward force of gravity.

Since the current in the wire is flowing directly upward, the force on the wire due to the external magnetic field should also be pointing directly downward to achieve levitation. This means that the magnetic field should be perpendicular to the wire and pointing directly downward.

To allow a conducting wire carrying current directly up to levitate, the external magnetic field must be perpendicular to the wire and pointing directly downward.

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In Thomson's experiment, when electrons enter a region of uniform magnetic field with strength B and length L, they experience a deflection through an angle θ ≈ (eBL)/(m), assuming small angles. This deflection angle is determined by the charge of the electron (e), the magnetic field strength (B), the length of the magnetic field region (L), and the mass of the electron (m).

When electrons enter a region with a uniform magnetic field, they experience a force known as the Lorentz force, given by F = q(v x B), where q is the charge of the particle, v is its velocity, and B is the magnetic field vector.

In Thomson's experiment, the electric field is turned off, so the electrons only experience the magnetic force. The force causes the electrons to move in a circular path due to the magnetic field acting as a centripetal force.

The deflection angle can be determined by considering the circular motion of the electrons. The centripetal force is provided by the magnetic force, so we can equate these forces: q(v²/r) = qvB, where r is the radius of the circular path.

Since the electrons are deflected through a small angle, we can approximate sin(θ) ≈ θ for small angles. Therefore, we can rewrite the equation as: qvB = mv²/r. From here, we can solve for the deflection angle θ by considering the radius of the circular path, which is related to the length of the magnetic field region: r = L.

Rearranging the equation, we have: θ = (qvBL)/(mv²). Since the mass of an electron is very small compared to its charge, we can approximate mv² as 2E, where E is the kinetic energy of the electron. Substituting this approximation, we get θ ≈ (eBL)/(2E). Since E = mv²/2, we can further simplify it to θ ≈ (eBL)/(2mv²), which can be written as θ ≈ (eBL)/(m).

Therefore, for small angles, the electrons in Thomson's experiment are deflected through an angle θ ≈ (eBL)/(m), where e is the charge of the electron, B is the magnetic field strength, L is the length of the magnetic field region, and m is the mass of the electron.

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Answer:

the number of times the crest of a wave hits a certain point

the more waves, the higher the frequency

Explanation:

I. Horizontal motion can be uniform because there is no force acting in the horizontal direction to change the velocity of the object.

II. Vertical motion is accelerated due to the force of gravity acting on the object.

III. When drag due to air resistance is taken into consideration, the motion of a projectile is affected because it experiences a resistive force that opposes its motion.

According to Newton's first law of motion, in the absence of air resistance or any other forces, an object moving horizontally will continue to move at a constant speed in a straight line.

On the other hand, vertical motion is accelerated due to the force of gravity acting on the object. Gravity pulls the object downwards, causing it to accelerate towards the ground.

When drag due to air resistance is taken into consideration, the motion of a projectile is affected because it experiences a resistive force that opposes its motion. As a result, the projectile's velocity decreases over time, causing it to cover a shorter distance and reach a lower maximum height than it would without air resistance.

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Answer:

The correct option is (c) "it bounces the light towards a focal point"

Explanation:

There are two types of spherical mirrors i.e. concave and convex.

A concave mirror is a type of spherical mirror that is curved inwards. For this type of mirror the rays of light are bounced back and converge to the focal point of the mirror.

So, the correct option is (c).

Answer:

c

Explanation:

The statement given "light travels from its source to the subject uninterrupted. this type of light creates bright highlights and deep shadows." is false because light can be interrupted, reflected, refracted, or absorbed when it encounters obstacles or objects, leading to changes in its path and the creation of diffused light.

Light does not always travel from its source to the subject uninterrupted. When light encounters obstacles or objects, it can be reflected, refracted, or absorbed, resulting in changes to its path. This interaction with the environment can create diffused light or scatter the light rays, reducing the formation of distinct highlights and shadows. Diffused light typically produces softer, more even lighting with less contrast between highlights and shadows.

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The feet and meter are the units used to measure the length. Here the maximum height in meter at which a scaffold should be placed is 20 feet is 6.097 m.

The feet is a standard unit of measurement. It is used to measure the length and distance of the objects. Feet is the plural alternative whereas the foot is the singular additive.

The metric system includes meters, centimeters, etc., whereas the imperial system includes foot, inches, yards, etc.,

Here 1 meter = 3.280 feet

So 20 feet = 6.097 m

Thus the maximum height in meter at which a scaffold should be placed is 20 feet is 6.097 m.

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OSHA regulations generally suggest the maximum height for a scaffold to be around 20 feet. This is to primarily ensure the workers' safety and to prevent accidents.

The maximum height at which a scaffold should be placed is typically set by OSHA (Occupational Safety and Health Administration) regulations. In general, the maximum height for a scaffold is usually around 20 feet.

This setting ensures that workers utilize the scaffold appropriately at a safe height to prevent accidents, such as falls occurring from a height the humans are unprepared to handle. Worker Safety and adherence to the safety standards is the ultimate goal behind this regulation.

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Despite the fact that the moon is slightly larger than Pluto, the two bodies are vastly different, and their unique characteristics make them both interesting objects of study for astronomers and space scientists.

Yes, the way things work on Earth's moon would be different from the way they work on Pluto, despite the fact that Earth's moon is slightly larger than Pluto's. This is because the characteristics of a celestial body depend on various factors such as its size, mass, density, and distance from the sun.

One major difference between the two is the gravitational force. The gravitational force on the moon is about one-sixth of that on Earth, while on Pluto, it is about one-fifteenth of that on Earth. This means that objects on the surface of the moon would weigh less than those on Pluto, and they would also fall more slowly.

Another significant difference is the surface conditions. The moon has a relatively smooth surface with little atmosphere and extreme temperature variations, while Pluto has a much more rugged terrain, a thin atmosphere, and a much colder surface with temperatures reaching -240°C.

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When a light beam enters a transparent material at an angle of incidence, the refraction takes place. This transparent material is diamond.

The material through which a person can be able to see clearly, when light falls on it.

The Snell's law is the ratio of sine of angle of incidence to the sine of angle of refraction is equal to the ratio of refractive index of the two mediums.

sin i /sin r = n₂ / n₁

The angle of incidence of light is 38⁰ and angle of refraction is 14.76⁰. The air has refractive index is 1, then the refractive index of the transparent material is

n₂ = sin 38 x 1 /sin 14.76

n₂ = 2.4165

The refractive index of the transparent material is approximately 2.417.

Thus, the transparent material is diamond.

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Answer:

Decrease the charge of one of the particles

Answer:

I don't agree

Explanation:

Atoms have 3 subatomic particles protons, electrons and neutrons,

Answer:

hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9

The efficiency of the system of the levers is  122%.

We have to note that the efficiency is the ratio of the work out put to the work out put multiplied by 100. In this case, we are told that a lift is used to carry boxes to the top floor of a hotel 20 m high. A total weight of 100 kg of boxes was carried up in 20 seconds. and that  the useful output of the engine driving the lift mechanism is 1.2 kilowatt.

Work input = 100 Kg * 9.8 m/s^2* 20 m = 19600 J

Work output = 1.2 kilowatt * 10^3 * 20 = 24000 J

Then we have;

Efficiency = Work out put/ Work input * 100

= 24000/19600 * 100

= 122%

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Answer: Yes the objects would be balanced.

Explanation:

If there is no net force then the object will not move in any direction, meaning that the object is balanced.

In the first diagram both dogs are pulling with the same force from opposite sides. Hence, balance each other and no displacement to the rope. In the second diagram force to the left dominates. A net force of 8 N to the left, pull the rope to left direction.

Force is an external agent acting on a body to change its motion or to deform it. The net force acting on the body depends on the direction and magnitude of all  the force acting on it.

If two equal forces acts on the body from the same side they add up together and the net force is their sum. If the forces are acting from the opposite sides, they will cancel each other and is said to be balanced.

In the first diagram, both dogs are pulling the rope with 12 N from opposites sides and the forces gets canceled each other.

In the second diagram, the force to the left dominates by 8 N. Then, the net force is 8N to the left. In the third case, both dogs are pulling from the same side. Hence, the net force is 32 N to the right.

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Your complete question is:

Explain whether the forces shown in each diagram are balanced or unbalanced.

The related image is attached below:

To find the specific heat capacity, we can use the formula Q = mcΔT, where Q is the amount of heat energy required, m is the mass of the object, c is the specific heat capacity, and ΔT is the change in temperature.

Given:
- Mass of the object (m) = 50.0g
- Amount of heat energy required (Q) = 1,145 joules
- Change in temperature (ΔT) = 10.0°C

Using the formula Q = mcΔT, we can rearrange it to solve for c:
c = Q / (mΔT)
Plugging in the given values, we get:
c = 1,145 J / (50.0 g x 10.0 °C)
c = 2.29 J/g°C

Therefore, the specific heat capacity of the object is 2.29 J/g°C.

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The wavelength of the radio wave is approximately 3.43 meters.

To find the wavelength (λ) of a radio wave, we can use the equation:

λ = c / f

where λ is the wavelength, c is the speed of light (approximately 3.00 × 10^8 m/s), and f is the frequency of the radio wave.

In this case, the frequency is given as 87.5 MHz. To convert it to Hz, we need to multiply it by 10^6:

f = 87.5 MHz × 10^6 = 87.5 × 10^6 Hz

Now we can calculate the wavelength:

λ = c / f = (3.00 × 10^8 m/s) / (87.5 × 10^6 Hz) = 3.43 meters

Therefore, the wavelength of the radio wave is approximately 3.43 meters.

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Answer: Well that's an easy one. Your mother birthed you but you are still alive today because you choose to continue to push forward and strive to live. As humans we all have struggles but some of choose to strive or sit in our humiliation like a kicked puppy. Pick your option.

The orbital period of the satellite circling the Earth at an altitude of 3500 km is 163 minutes

The orbital period for the satellite circling the Earth at an altitude of 3500 km can be obtained as follow:

T² = (4π² / GM) × a³

T² = [(4 × 3.14²) / (6.67×10¯¹¹ × 5.987×10²⁴)] × 9900000³

Take the square root of both sides

T = √[((4 × 3.14²) / (6.67×10¯¹¹ × 5.987×10²⁴)) × 9900000³]

T = 9789.15 s

Divide by 60 to express in minutes

T = 9789.15 / 60

T = 163 minutes

Thus, we can conclude that the orbital period of the satellite is 163 minutes

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