Which statement accurately describes nutritional dietary supplements?
A. Supplements labeled “natural” are safe for all people.
b. Supplements labeled “natural” may interact negatively with medications.
c.Over-the-counter supplements are safe at almost any dose.
d.Over-the-counter supplements are required to have proven health benefits.

A physical field called an electric field surrounds electrically charged particles and attracts or repels all other charged particles nearby. The physical field of a system of charged particles can also be referred to as the electric field.

In a uniform electric field E, a particle with electric charge q moves in a straight line. The speed of the particle is u.

The electric force exerted in the charge is qE.

The electric field and the velocity of the particle are both in the x direction.

Now,

The particle starts from rest i.e. x = 0 and t = 0.

We have the acceleration of the particle as:

a = (du/dt) = (qE/m) (( 1 - (u²/c²) )⁻³/²

Now,

du/ (( 1 - (u²/c²) )⁻³/² = (qE/m) t

Integrating the above equation with limits for x as 0 to u and for t as 0 to t.

We get,

u/(1 - (u²/c²))^{-1/2} = qEt/m

Therefore,

u = (qEct)/[√(m²c² + q²E²t²)]

For the position of the particle:

The position of the particle will be the integration of the speed of the particle in t = 0 to t = t.

Therefore,

x = ∫udt

x = qEc∫ tdt/(√(m²c² + q²E²t²) )

x = (c/qE) ( √(m²c² + q²E²t²) - mc)

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The energy transferred to the eardrum which was exposed to the sound for 1.00 min is [tex]3 \times 10^{-3} J[/tex]

Given:

Threshold of hearing intensity = I = [tex]1[/tex] × [tex]10^-12W/m^2[/tex]

Area of the ear drum = A = [tex]5[/tex] × [tex]10^5m^2[/tex]

Incident power = P = IA

                          = [tex](1* 10^-12W/m^2(5 * 10^5m^2) =[/tex][tex]5[/tex] ×[tex]10^-17W[/tex]

For threshold of pain  the intensity I = [tex]1.00W/m^2[/tex]

The incident power  at the threshold of pain

P  = [tex](5[/tex] × [tex]10^5m^2( 1.00W/m^2) =[/tex] [tex]5[/tex]× [tex]10^-5W[/tex]

b) Ear drum exposed to this sound  t = 1.00min

                                                              = 60s

Energy transferred to ear drum is  E = P × t

                                                             =  [tex]5 \times 10^{-5} \times 60[/tex]

                                                             = [tex]3 \times 10^{-3}\;J[/tex]

 Hence, [tex]3[/tex] ×[tex]10^-3 J[/tex] energy is transferred to the eardrum exposed to this sound for 1.00 min.

The capacity to perform work is known as energy in physics. Potential, kinetic, thermal, electrical, chemical, nuclear, and other types are all possible. As energy is transferred from one body to another, there is also heat and work. Energy is always categorized after it has been transferred based on its nature. As a result, heat transfer may result in thermal energy, whereas labor done may result in mechanical energy.

Motion is a common feature of all energy types. Whenever a body is in motion, for instance, it contains kinetic energy. Even while at rest, a tensioned object like a spring or bow has the ability to move; this is because of the configuration of the object, which carries potential energy. Nuclear energy is similar in that it has potential energy.

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The component that Chang could leave out and still be able to light up the bub is the switch.

The electric circuit refers to a path that is created for the flow of current. We know that current is the movement of electrons. When we connect a circuit, a proper conduit has been set up so that electrons can pass through.

In this case, we have been told that Chang wants to build a circuit that will light up a bulb from a flashlight, and has a battery, switch, wire, and a light bulb.

The component that Chang could leave out and still be able to light up the bub is the switch.

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Missing parts;

Chang wants to build a circuit that will light up the bulb from a flashlight. Which component could Chang leave out and still light up the bulb? the switch the battery the wire the light bulb

Answer:

A) the battery

Explanation:

Answer:

Explanation:

Answer:

compressions or refractions

Explanation:

Answer:

5 seconds

Explanation:

sound travels 1 km in roughly 3 secs so 1 mile in roughly 5 secs.

Answer:

9

Explanation:

A atomic number is the addition of every number

The range of a cannonball launched with a speed of 35 m/s at an angle of 50 would be 119.1 meters.

The launching of a cannonball is a case of projectile motion.

The formula for the range(R) of a projectile is

R = 2 u² sin(θ) cos(θ)/g

Here,

u = initial speed with which the projectile is launched = 35 m/s

θ = Angle at which projectile is launched = 50°

R = 2 (35)² sin(50) cos(50)/ 9.8

R = 2 x 1225 x 0.76 x 0.64/9.8

R = 119.1 m

Thus, The range of a cannonball launched with a speed of 35 m/s at an angle of 50 would be 119.1 meters.

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The freezing Point of water is a physical property

The ability of oxygen to react with iron to cause rust is chemical property

Explanation:

Answer:

a = 2.44 m/s²

Explanation:

The Net force acting on the car downwards the plane will be equal to the component of the weight that is parallel to the plane.

Thus;

mg(sin θ) = ma

Thus;. g(sin θ) = a

g is acceleration due to gravity = 9.81 m/s²

θ = 14.4°

Thus;

9.81 × sin 14.4 = a

a = 2.44 m/s²

Answer:

2.44

Explanation:

If your on Acellus the correct answer is 2.44

The total time taken by the ball to reach Dina is  7.5 × 10³ s.

A frame of reference is a set of reference points—geometric points whose positions are known mathematically and physically—that define the origin, orientation, and scale of an abstract coordinate system.

If a body does not continuously adjust its position in relation to its environment throughout the course of time, it is said to be at rest.

In the frame S', Dina and Owen are at rest.

The speed of the ball with respect to Owen, u =0.800c

The speed of the frame S' with respect to frame S,  v = 0.600c

Distance between Dina and Owen, L(p) = 1.8 × 10¹² m

Speed of light, c = 3 × 10⁸ m/s

Therefore, the ball reaches Dina in time:

t = L(p) / u

t = 1.8 × 10¹² m / 0.8c

t = 1.8 × 10¹² m /(0.8)(3 × 10⁸ m/s)

t = 7.5 × 10³ s

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Answer:

Neutralization reactions always produce water and a salt.

Explanation:

There are different types of chemical reactions that occurs. Two of them are neutralization and double-displacement reaction. Neutralization reaction is the reaction between an acid and a base to give an acid salt and water as products. For example:

2NaOH (base) + H2SO4 (acid) → Na2SO4 (salt) + 2H2O (water)

On the other hand, Double displacement reaction is the reaction that involves an ion exchange between the reactants to form new products. This ionic exchange occurs in such a way that two reactants form two new products. For example:

2NaCl + Ca(NO3)2 → CaCl2 + 2NaNO3

Therefore, the major difference between these two types of reactions is that: NEUTRALIZATION MUST ALWAYS PRODUCE WATER AND SALT AS PRODUCTS.

Answer:i think its D

Explanation:

Answer:

How we know, the equation is:

W = mg

Replacing according our data:

W = 53 kg × 9,8 m/s^2

Resolving:

W = 519,4 N

The weight of the object is of 519,4 Newtons.

The direction of magnetic field is towards east.

We have a wire having a mass per unit length carrying 2A current horizontally to the south.

We have to determine the direction of magnetic field intensity.

The mass per unit length is called Linear mass density of any linear body. It is denoted by λ. Mathematically -

λ = m/L

According to the question, we have -

Direct your thumb in the direction of the current which is horizontally towards south and curl the remaining fingers. Now, advance in the direction of the current, you will notice that the direction of magnetic field is eastwards.

Hence, the direction of magnetic field is towards east.

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The sound level at a distance of 3.00m from a source is 120dB at  [tex]9.48*10^{5}\;m[/tex] distance is the sound level 10.0 dB

The RMS (root-mean-squared) of the sound pressure measured and averaged over a given length of time is the sound level in decibels. When measured by contemporary integrating sound level meters, measurements are often A-weighted to coincide with the human reaction; see the time-average sound level definition for more information. These measurements are now commonly referred to as the LA eq. Sound pressure is defined as having a sound level when it is compared to a reference sound pressure of 20 Pa using a standard exponential time weighting and a standard frequency weighting. The ratio of the base ten logarithms to the ratio of the sound level in decibels.

(Lw) = 10·log (W/Wo) dB

Given:

Sound level, [tex]Beta = 120\;dB[/tex]

Sound level, [tex]Beta_{a} = 10\;dB[/tex]

r = 3 m

[tex]P = 4\pi r^{2}I\;\;\;\;------equation(1)[/tex]

We know that,

[tex]\beta = 10 \times log(\frac{I}{I_{o} } )[/tex]

Where, [tex]I_{o}=1 \times 10^{-12}\;W/m^{2}[/tex]

Substitute the known value in the sound level equation,

[tex]10 = 10 \times log(\frac{I_{a} }{1 \times 10^{-12} } )[/tex]

[tex]1 = log(\frac{I_{a}}{1 \times 10^{-12} } )[/tex]

[tex]10= \frac{I_{a}}{1 \times 10^{-12} }[/tex]

[tex]I_{a}= 10 \times 1 \times 10^{-12}[/tex]

[tex]I_{a}=1 \times 10^{-11}\;W/m^{2}[/tex]

[tex]P = 4\pi r_{a} ^{2}x_{123} I_{a} \;\;\;\;------equation(2)[/tex]

equation(1) and (2) are equal,

[tex]4\pi r^{2}I = 4\pi r_{a} ^{2}x_{123} I_{a}[/tex]

Simplify the above equation,

[tex]r_{a} = \sqrt{(\frac{I}{I_{a} } )}\;\;r[/tex]

Substitute the known values in the above equation,

[tex]r_{a} = \sqrt{(\frac{1 \times 10^{-12} }{1 \times 10^{-11} } )}\;\times 3[/tex]

By solving the above equation, We get,

[tex]r_{a} = 9.48 \times 10^{5}\;m[/tex]

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Answer:

I think It's magna! Let me know if It's right.

Answer:

Magnetic repulsion Is evidernt.

Answer:

The magnetic field flows from the north pole of one magnet to the south pole of the other magnet.

Plato :)

When the body of mass m is projected at angle θ, the displacement is horizontal to the earth's surface, but the force of gravity is perpendicular to the motion of the body.

Therefore, the gravitational force on the body is zero.

Work done will also be zero due to zero gravitational force.

Displacement can be defined as the shortest distance covered by the object or it is the change in the position of the object.

Therefore the average power i.e. P = (Work/Time) of gravitational force over the whole time of flight is zero.

Option (d) zero

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They feel they are, overall, bad people without any particular skills or value, when they are not.

I hope this helps you

God bless and have an awesome weekend

:)

Answer:

I know that we can identify it

Explanation:

C. structure

Answer:

C

Explanation:

In order to know what organism is it, you must obeserve its structure, behavior, movement but the most important is structure.

Answer:

how heavy you are and how light you are

Explanation:

Physics is the area of science that compares and describes quantities and movements of matter and energy. The correct option is option 2.

Physics is the study of matter and energy in space and time, as well as their interactions. The interactions of particles and physical objects are governed by energy and the fundamental forces of nature. Science's study of matter, its motion through space and time, as well as related ideas like energy and force, is known as physics.

Therefore, the branch of science known as physics compares and describes the amounts and motions of matter and energy. The right choice is number two.

The complete question is given below:-

What area of science compares and describes quantities and movements of matter and energy?

1. earth science

2. physics

3. chemistry

4. biology

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The value of m = 1.6 and n = -19

When there are more or fewer protons in an atom than electrons, the substance has an electric charge. While electrons have a negative charge, protons have a positive charge. If a substance has more protons than electrons, it is positively charged; if it has more electrons, it is negatively charged.

The ability to conduct electricity is a characteristic of many fundamental, or subatomic, components of matter. As an illustration, protons and neutrons both have positive charges but electrons have a negative charge.

given:  [tex]q=0.000000000000000000160c[/tex]

Scientific notation of [tex]q= 1.6 X 10^{-19}[/tex]

now compare with the standard form [tex]m X 10^{n}[/tex]

we can say m = 1.6 and n = -19

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The estimated error rate for spherical volume measurements is 0.694%.Percent error is the difference between the estimated value and the actual value compared to the actual value, expressed as a percentage. So the percent error is the relative error multiplied by 100.

To calculate the Percent error

Subtract the actual value from the estimated value

Divide the result from step 1 by the actual value

to get the total percentage Multiply the result by 100

Formula,

Error Rate = ((Estimated Number – Actual Number)/Actual Number) x 100

from the given data

V=(4/3)πr3

=337.53cm³    

so

((339.87-337.53)/337.53)x100

=0.694

So from the given data and substituting that data in the formula , the percentage error to estimate the measurement of the volume of the sphere is 0.694%.

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The pressure in a liquid at a given depth is called the hydrostatic pressure. This can be calculated using the hydrostatic equation:

P = ρgh

P = (1000 kg/m³)(9.8 m/s²)(4 m)

Answer:

P = ρgh  

P = (1000 kg/m³)(9.8 m/s²)(4 m)

P = 39200 Pa

Explanation:

In the case of the water stored in a tank, the pressure at its bottom is the weight acting on a unit area of the surface where the tank is kept. To turn that into an equation: Pressure = weight/area, and weight = mass (m) * acceleration due to gravity (g). This means pressure = m * g/ area

The statement that describes the objects’ inertias is "Object A has a greater inertia than Object B.

Newton's first law of motion, states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

This law is also called the law of inertia because it depends on mass of the object.

The greater the mass of an object, the more reluctant it will be to move.

Thus, the statement that describes the objects’ inertias is "Object A has a greater inertia than Object B.

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Answer:

AC motor........A

Explanation:

Plato, an AC motor is much simpler than a DC motor.  As alternating current passes through the coil, it becomes magnetized.  Since the current is alternating, the north and south ends keep switching.

Answer:

magnetic

Explanation:

PLATO