Newton's first law of motion is the law of inertia. What does it state?
a
That the acceleration of an object depends on its mass and the amount of force applied to it.
b
That the motion of an object depends on the amount of gravity applied to it.
c
That an object will only accelerate (change motion) if an unbalanced force acts on it.
d
That for every action there is an equal but opposite reaction.

Answer:

B. changing shape and changing volume

Explanation:

*no definite shape (takes the shape of its container)

*no definite volume

Given that the trench is 11.0 km deep and that saltwater has a constant density of 1029 kg/m3 throughout, the gauge pressure (in atm) due to the ocean at the bottom of the trench is 992.38 atm.

It is positive for pressures above atmospheric pressure and negative for pressures below atmospheric pressure; gauge pressure is the pressure as compared to atmospheric pressure. Any fluid that is not contained has its pressure increased by the atmospheric pressure. Density is defined as the ratio of mass to volume, or mass per unit volume. It is a way to quantify how much "stuff" an object has in relation to its volume (cubic metre or cubic centimeter). In essence, density is a measurement of how closely stuff is packed together.

P = 100552500/101325

P = 992.38atm

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The acceleration of the box is 0.025 m/s²

We'll begin by calculating the the frictional force

Coefficient of kinetic friction (μ) = 0.21

Mass (m) = 8 Kg

Acceleration due to gravity (g) = 10 m/s²

Normal reaction (N) = mg = 8 × 10 = 80 N

Fբ = μN

Fբ = 0.21 × 80

Frictional force (Fբ) = 16.8 N

Force (F) = 17 N

Fₙ = F – Fբ

Fₙ = 17 – 16.8

Mass (m) = 8 Kg

Net force (Fₙ) = 0.2 N

a = Fₙ / m

a = 0.2 / 8

Therefore, the acceleration of the box is 0.025 m/s²

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Answer: Plato

Explanation: To find out whether a product is scientifically sound, check the FDA standards for the product. Another option is to ask a medical expert, such as a doctor or a nutrition scientist, whether the product is scientifically sound.

hope this helps

We can check the superfood or diet plan whether it is complying FDA standard or not. Another way is to send it to lab for testing which will gives information about the nutrient content used and its benefits as well as effects.

FDA is Food and Drug Administration that coordinates the evaluation, development, maintenance, and adoption of health and regulatory data standards to ensure that common data standards are used throughout the agency.

Superfood is a marketing term for food claimed to confer health benefits resulting from an exceptional nutrient density.

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Inertia changes the effects of gravity on objects in the solar system keeps the sun stationary pulls asteroid prevents planets from pulling into one another.

Planets tend to resist changes in their direction and rate of motion, like any objects with mass. The solar system's planets, including Earth, are kept in stable orbits by the combination of inertia—a tendency to resist change—and the sun's gravitational pull.

The orbits are formed and maintained by the gravitational pull of the sun, planets, and inertia. The sun and the planets are kept apart by gravity, which pulls them together. The tendency to maintain speed and continue moving is provided by inertia.

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Answer:

D.) prevents planets from pulling into one another.

The most nearly total force acting on a 1 m wide section of the curved surface is 220 kN.
So, the correct answer is C.

To determine the total force acting on the curved surface, we need to know the length and height of the surface. Given that the length is 7 m and the height is 3 m, we can use the formula for the total force acting on a curved surface:

                                     R = (L/2)(h)

Where R is the total force, L is the length of the curved surface, and h is the height of the curved surface. Plugging in the given values, we get:
R = (7 m/2)(3 m)
R = 10.5 m²

Now, we need to convert this value from meters squared to kilonewtons. We can do this by multiplying by the density of water at 20°C, which is 9.81 kN/m³:

R = 10.5 * 9.81
R = 102.9 kN

Rounding to the nearest option given in the question, we get 220 kN as the most nearly total force acting on the curved surface.

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Answer:

B

Explanation:

A body has kinetic energy that is moving

0.8 A of current is flown through the upper branch of the circuit shown below:

as shown in the figure the current through lower loop is \(I_1+I_2\) and the current through the upper loop is \(I_2\).

the kirchoff's loop eqns in lower loop is:

 -4\(I_1\) + 5 -\(I_1\) - 10(\(I_1+I_2\)) = 0

=> 2\(I_1\) +\(I_1\) + 2\(I_2\) = 1

=> 3\(I_1\) + 2\(I_2\) =1    ----- (i)

we have obtanied 1 equation

the kirchoff's loop eqns in upper loop is:

-3\(I_2\) +10 -2\(I_2\) + \(I_1\) - 5 +4\(I_1\) = 0

=> - 5  \(I_2\) +10+ 5 \(I_1\) -5 =0

=> \(I_2\) -  \(I_1\) =1     -------(ii)

solving equation (i) and equation (ii) we get

\(I_1\) = -0.2

here negative sign represents that the current direction is opposite to our assumption.

so     \(I_2\) = 1 + \(I_1\)

=>     \(I_2\) = 0.8A

So the current through the upper branch is 0.8A

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Complete question:

in the circuit shown in the figure , find the magnitude of current in the upper branch.

Answer:

The answer should be True, but it's False on Edge 2021

Explanation:

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The circuit was installed in UF cable which requires a minimum burial depth of 6 inches for this circuit.

UF cable is used as an underground feeder cable to distribute power from an existing building to outdoor equipment. UF cable can also be used as direct burial cable.

For the 24-volt branch circuit installed, the minimum burial depth will be 6 inches.

Thus, the circuit was installed in UF cable which requires a minimum burial depth of 6 inches for this circuit.

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Answer:

Base

Hope this helps! :)

The answer is the field vector is perpendicular to the surface.

The electric field's angle with the equipotential surface is always 90 degree. The electric field is always perpendicular to the equipotential surface.

What is electric field?

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(a) The moment produced by the weight W of the crate about E is 7840 N·m.

(b) The smallest force applied at A that creates a moment of equal magnitude and opposite sense about E is 3920 N.

(c) The magnitude, sense, and point of application on the bottom of the crate of the smallest vertical force that creates a moment of equal magnitude and opposite sense about E is 1960 N, upward, and at the midpoint of the bottom edge.

The moment of a point is given by the product of the force and the perpendicular distance from the point to the line of action of the force.

In this case, the weight of the crate acts vertically downward with a force of F = m * g, where m is the mass of the crate (80 kg) and g is the acceleration due to gravity (9.8 m/s²).

The perpendicular distance from point E to the line of action of the weight is 2 meters. Therefore, the moment about point E is M = F * d = (80 kg * 9.8 m/s²) * 2 m = 7840 N·m.

To create a moment of equal magnitude and opposite sense about point E, the force applied at point A should have the same perpendicular distance as the weight but act in the opposite direction.

Since the perpendicular distance is 2 meters, the magnitude of the force required can be calculated using the equation M = F * d. Solving for F, we have F = M / d = 7840 N·m / 2 m = 3920 N.

To create a moment of equal magnitude and opposite sense about point E, a vertical force should be applied at a point on the bottom of the crate.

The magnitude of the force can be determined by dividing the moment by the perpendicular distance between the force and point E. In this case, the distance is 4 meters, so the force magnitude is F = M / d = 7840 N·m / 4 m = 1960 N.

The force needs to act upward to oppose the weight. The point of application should be at the midpoint of the bottom edge to maintain balance and symmetry.

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The deflecting electric field is 0.83mv/m

Acc. to the newtons 2nd law - there is an acceleration when a force acts on an object.

F = ma     (equation 1)

where

F is force

m is mass of object

a is acceleration

Electric field intensity- it is defined as force experienced by a unit positive charge placed at that point.

it is denoted by E = F/q

where

F is force

q is the charge

F = Eq     (equation2)

from 1 and 2 equation we get

ma = Eq

E = ma /q

Charge on the drop of ink.is q.

(e is the charge on an electron.)

so,

q = 751896×e

q = 751896×1.6 ×⁻¹⁹

q = 12.03 ×10⁻¹⁴

m = 10⁻¹¹kg

a = 10⁴ m/s²

using above values

E = ma /q

E = 10⁻¹¹×10⁴/12.03 ×10⁻¹⁴

E = 0.83mv/m

The deflecting electric field is 0.83mv/m

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The 500 grams of ice content of the kettle get to the boiling point in 22 minutes.

It will take longer to reach a rolling boil when using more water than when using less. Faster boiling occurs with hotter heat sources. Water will boil if it is heated to a higher temperature during the boiling process.

Diagram 1. A gram-me of water may be heated by one degree by applying 4.186 J (1 calorie) of energy, or the specific heat capacity, to it. is the shift in the system's temperature.

We have,

m = 0.5kg, time = 22 minutes = 1320 seconds

We know that

Power = W/t

500 = W(heat)/1320

Heat((Q)) = 660000J

Then, Q = mcΔT

660000 = 0.5 × 4180 × (T + 10)

T + 10 = 315.78 degree

T = 305.78 degree

Thus, water can boil at 100 degree,so in 22 minutes water will get to boiling point.

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The derived formulas for the final velocity of the carts in elastic collisions are as follows:

Suppose you have a cart of mass m1 and velocity v1i colliding with a cart of mass m2 and velocity v2i, with motion confined to one dimension. If the collision is perfectly elastic, then both momentum and energy are conserved. in this case, the final velocities are:

Calculations;

v1f = (2m1/m1 + m2) × v1i - ( m1 - m2/m1+m2) × v2i                             ....     (1)

v2f = (m1 - m2/m1 + m2) ×v1i + ( 2(m2)/ m1 + m2) × v2i                        ....    (2)

If the collision is totally inelastic, then only momentum is conserved; energy is lost. in this case, the carts end up moving together with one common final velocity:

vf= (m1/ m1 + m2) × v1i + (m2/ m1 + m2) v2i                                         ....    (3)

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48 m/s in terms of km/h is 720.8 km/h. In terms of m/min is 2880 m/min, in terms of km/s is 0.048 km/s and in terms of km/min is 2.88 km/min.

To solve this question, we need to understand some terms. The unit of velocity is measured in m/s. It can be expressed in different units of velocity.

1 km (kilometer) = 1000 meter

1 h (hour) = 3600 seconds

1 minutes = 60 seconds

To convert m/s into km/h,

48 m/s * 3600/1000 =  172.8 km/h

To convert m/s into m/min,

48 m/s * 60 = 2880 m/min

To convert m/s into km/s,

48 m/s ÷ 1000 = 0.048 km/s

To convert m/s into km/minutes,

48 m/s * 60 / 1000 = 2.88 km/min

Therefore, the 48 m/s expressed is 172.8 km/h, 2880 m/min, 0.048 km/s and 2.88 km/min.

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48 m/s is equivalent to  172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

To express 48 m/s in different units of velocity:

km/h (kilometers per hour):

To convert m/s to km/h, we can use the conversion factor of 3.6 since 1 m/s is equal to 3.6 km/h.

48 m/s * (3.6 km/h / 1 m/s) = 172.8 km/h

Therefore, 48 m/s is equivalent to 172.8 km/h.

m/min (meters per minute):

To convert m/s to m/min, we can use the conversion factor of 60 since there are 60 seconds in a minute.

48 m/s * (60 m/min / 1 s) = 2880 m/min

Therefore, 48 m/s is equivalent to 2880 m/min.

km/s (kilometers per second):

Since 1 kilometer is equal to 1000 meters, to convert m/s to km/s, we divide the value by 1000.

48 m/s / 1000 = 0.048 km/s

Therefore, 48 m/s is equivalent to 0.048 km/s.

km/minute (kilometers per minute):

To convert m/s to km/minute, we first need to convert m/s to km/s (as calculated in the previous step) and then multiply by 60 to convert seconds to minutes.

0.048 km/s * 60 = 2.88 km/minute

So, 48 m/s is equivalent to 2.88 km/minute.

Hence, 48 m/s is equivalent to approximately 172.8 km/h, 2880 m/min, 0.048 km/s, and 2.88 km/minute.

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Average speed = (distance covered) / (time to cover the distance)

Average speed = (1.6 km) / (30 min)

Average speed = 0.0533 km/min

This is the true average speed, but it's not in the units that the question asked for.  So we have to massage it and convert it to ' meters/sec '.

Speed = (1.6 km) / (30 min)

Speed = (1.6 km / 30 min) x (1,000 m / 1 km) x (1 min / 60 sec)

Speed = (1.6 x 1,000 x 1) / (30 x 1 x 60) (km-m-min / min-km-sec)

Speed = (1,600 / 1,800) (m / sec)

Speed = 0.89 m/s    

Answer:

Explanation:

3 and 4G networks, Bluetooth, and Wi-Fi technologies. my opinions

Answer:

5.6 volts

Explanation:

According to Ohm's Law, V = IR

where V = voltage, I = Current and R = resistance

Explanation:

a.)

Reactants : CO2 (carbondioxide) + H2O (water)

Products : O2 (oxygen) + C6H12O6 (glucose)

b.)

Reactants: Na ( Solid Hydrogen) + H2O (water)

Products: H2 (hydrogen gas) + NaOH (sodium hydroxide)

The porosity of the soil sample collected from the agricultural field using the soil corer method is 35.2%.

To calculate the porosity of the soil sample collected from the agricultural field using the soil corer method, we first need to determine the volume of the soil and the volume of the water in the sample.

The volume of the soil can be calculated using the dimensions of the metal corer as follows:

Volume of soil = π x (diameter/2)^2 x height
= π x (7 cm/2)^2 x 12 cm
= 231.91 cm^3

Next, we need to determine the volume of the water in the sample. We are given that the sample has a field moist mass of 706 g, and contains 135 g of water. This means that the dry mass of the soil in the sample is:

Dry mass of soil = Field moist mass - Mass of water
= 706 g - 135 g
= 571 g

To determine the volume of water, we can use the density of water, which is approximately 1 g/cm^3. This means that the volume of water in the sample is:

Volume of water = Mass of water / Density of water
= 135 g / 1 g/cm^3
= 135 cm^3

Now that we have determined the volume of soil and the volume of water in the sample, we can calculate the porosity as follows:

Porosity = Volume of voids / Total volume

Volume of voids = Volume of the metal corer - Volume of soil - Volume of water
= π x (7 cm/2)^2 x 12 cm - 231.91 cm^3 - 135 cm^3
= 93.05 cm^3

Total volume = Volume of the metal corer
= π x (7 cm/2)^2 x 12 cm
= 263.9 cm^3

Therefore, the porosity of the soil sample is:
Porosity = Volume of voids / Total volume
= 93.05 cm^3 / 263.9 cm^3
= 0.352 or 35.2%

So, the porosity of the soil sample collected from the agricultural field using the soil corer method is 35.2%.

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Answer:

Vectors have both magnitude and direction

Explanation:

Vectors show how strong the force in because the bigger the arrow, the stronger the force.  Also, it obviously shows direction because its an arrow.

Vectors have magnitude and direction while scalars have only magnitude. Vectors are shown using an arrow above the symbol of the quantity and are often printed in bold face.

In Physics, we generally recognize two categories of quantities; vector quantities and scalar quantities.

Vector quantities have both magnitude and direction. It is normal to print vectors in bold face, with an arrow written above the symbol of the quantity. The arrow points in the direction of the vector.

The following are true regarding vectors;

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A total of 250 joules of energy would have transferred to the water.

To calculate the total energy transferred from the light bulb to the water, we need to know how long the light bulb was turned on for. Let's assume that the light bulb was turned on for 10 seconds. In that case, the bulb would have transferred a total of 250 joules (25 watts x 10 seconds = 250 joules) of energy to the water.
It's important to note that not all of the energy transferred from the light bulb will necessarily be absorbed by the water. Some of the energy may be lost to the surrounding environment as heat, for example. Additionally, the efficiency of the light bulb itself may also play a role in how much energy is actually transferred to the water.
Overall, if we assume that the light bulb was turned on for 10 seconds, then it would have transferred a total of 250 joules of energy to the water.

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Explanation:

The frequency of a wave is inversely proportional to its wavelength. That means that waves with a high frequency have a short wavelength, while waves with the low frequency have a longer wavelength.

Wave A has a higher frequency, wave B must have a higher wavelength to maintain the inverse relationship. Therefore option Option B is correct.

According to the relationship between frequency and wavelength in electromagnetic waves, they are inversely proportional.

Therefore, if light wave A has a greater frequency than light wave B, light wave B will have a greater wavelength. This can be explained by the equation c = λν, where c represents the speed of light, λ represents wavelength, and ν represents frequency.

As frequency increases, wavelength decreases, and vice versa. Since wave A has a higher frequency, wave B must have a higher wavelength to maintain the inverse relationship. Therefore, the correct answer is B) Wave B.

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Your question is incomplete, but most probably your full question was,

Lightwave A has a greater frequency than light wave B. Which has a greater wavelength?

A) Wave A

B) Wave B

C) They're equal

D) Not enough info

The correct answer is a) a frictional force is acting on it.

When a packing crate slides down an inclined ramp at a constant velocity, it implies that the forces acting on the crate are balanced. In this case, the force of gravity pulling the crate downward is counteracted by an equal and opposite frictional force acting in the opposite direction. The frictional force opposes the motion of the crate and prevents it from accelerating or decelerating.

Option b) a net downward force is acting on it is incorrect because if there was a net downward force, the crate would be accelerating, not moving at a constant velocity.

Option c) it may be accelerating is also incorrect because the scenario described states that the crate is sliding down at a constant velocity, which means there is no acceleration.

Option d) it is not acted on by appreciable gravitational force with a constant velocity is incorrect as gravity is still acting on the crate, but it is balanced by the frictional force.

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Virtual reality is the observation method that exposes people to frustrations, temptations, pressure, and boredom in a controlled environment, and is used for firearms training in police departments.

Virtual reality is an observation technique that is utilized in police agencies for weapons training. It exposes individuals to frustrations, temptations, pressure, and boredom in a controlled setting.

Police officers' psychophysiological reactions are impacted when participating in virtual reality weapons training exercises.

Electroencephalographic (EEG) and heart rate variability (HRV) measurements, as well as VR simulator performance metrics, are used as outcome measures.

In order to facilitate the design of a biocybernetic adaption layer that generates real-time modulations in simulation difficulty based on specific physiological responses, we propose a psychophysiological model.

Hence, virtual reality is the observation method that exposes people.

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We are given that:

We need to find:

Using equations of motion:

➙ v² - u² = 2as

➙ v = u + at

here,

From the given information, we can conclude that:

Now, using equation of motion:

➝ v = u + at

➝ v = 0 + ( 8 × 1.5 )

➝ v = 0 + 12 .0

➝ v = 12 m/s

For, acceleration :

➝ v² - u² = 2as

➝ ( 12 )² - ( 0 )² = 2 × 8 × s

➝ 144 - 0 = 16s

➝ 16 s = 144

➝ s = 144 / 16

➝ s = 9m

\( \dag\) Since, we take displacement in terms of distance in some places, therefore we can say that the height from which the object was dropped is 9 meters .

Answer:

D

Explanation:

The time taken for a wave to complete one circle meaning time to reach the same successive crest or through of a wave.