A rocket is accelerating upward from the surface of earth with an acceleration of 4. 4 m/s2. On board the rocket is a 0. 060 kg chicken egg. What is the apparent weight of the egg?.

Explanation:

by rough handing

by heating

electrical method

Answer:

wrapping the coil around a piece of iron. (such as an iron nail)

adding more turns to the coil

increasing the current flowing through the coil.

Answer:

Los objetos A y C tienen cargas del mismo signo (opcion a)

Explanation:

Hay dos tipos de cargas : cargas positivas y cargas negativas.

La Ley de Coulomb dice que la fuerza electrostática entre dos cargas puntuales es proporcional al producto de las cargas e inversamente proporcional al cuadrado de la distancia que las separa, y tiene la dirección de la línea que las une y se cumple que:

Es decir que las cargas de igual signo se repelen, mientras que las de diferente signo se atraen.

Entonces, si se juntan los objetos A y B y se repelen significa que la carga es del mismo signo.

Cuando se acercan los objetos B y C, se repelen. Entonces significa que posee carga de igual signo.

Por lo que podes concluir que los objetos A y C tienen cargas del mismo signo (opcion a)

The frequency recorded by the device after the car passes by at the given speed is 474.27 Hz.

The frequency recorded by the device is determined by using the following formula for doppler effect.

\(f_o = f_s(\frac{v + v_0}{v- v_s} )\)

where;

\(f_o = 448(\frac{343 + 0}{343-19} )\\\\f_0 = 474.27 \ Hz\)

Thus, the frequency recorded by the device after the car passes by at the given speed is 474.27 Hz.

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Answer:

I think its tennis but im not sure

Explanation:

The correct representation of a beta particle is -10e, which represents a high-energy electron with a charge of -1 and a negligible mass.

Among the options provided, the correct representation of a beta particle is the option "d) -10e." A beta particle is a high-energy electron (or positron) that is emitted during radioactive decay processes. It is represented by the symbol "β" and has a charge of -1 (for an electron) or +1 (for a positron).

The representation -10e indicates that the beta particle has a charge of -1 (indicated by the negative sign) and a mass of approximately 0 (indicated by the "0" before the electron symbol "e"). The mass of an electron is extremely small compared to other subatomic particles, such as protons and neutrons, so it is often considered negligible in comparison.

Beta decay occurs when a neutron in the nucleus of an atom spontaneously transforms into a proton, releasing a beta particle in the process. This transformation is accompanied by the emission of an antineutrino (for beta decay involving an electron) or a neutrino (for beta decay involving a positron).

The correct representation of a beta particle as -10e signifies its charge and approximate mass. It is important to note that the representation does not provide information about the energy or velocity of the beta particle, as those factors may vary depending on the specific radioactive decay process and the energy level of the emitted particle.

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The vertical forces cancel, so only the horizontal forces are included in the net force. If the right is positive and the left is negative, then

50 N + (-20 N) = 30 N

so the net force is (B) 30 N to the right.

Answer:

(B) 30 N to the right.

Explanation:

Answer:

In my opinion, the last option is "It changes with new observations made by astronomers". is correct as many new theories are still being made so many new things can be added later on.

Explanation:

hope it helps

Answer:

9 Km/h

Explanation:

Answer:

The book's inertia causes it to continue moving.

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

Explanation:

Does this help you???

From the principle of energy conservation, the kinetic energy of the pendulum at 0.5 m is 14.7 J.

A pendulum swings back and forth and can be used to show the change of potential energy to kinetic energy and vice versa.

Given that the kinetic energy is converted to the potential energy; the potential energy at 0.5 m is 3 * 9.8 * 0.5 = 14.7 J.

Following the principle of energy conservation, the kinetic energy of the pendulum at 0.5 m is 14.7 J.

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In the illustration above the type of layout which most appropriate to use is the horizontal cell type.

The main purpose and benefit of the layout is to make the display communicative and also supports the arrangement of image and text elements in the design. This will help users and audiences capture the information presented. The function of Layout is to achieve harmony, aesthetic value, economy, and communicative. Here are the layout goals in general:

(1) Make a sketch in the form of a design of the visual composition that will be placed.

(2) Making layouts in the form of pictures and text designs.

(3) The final stage, compiling all elements into a harmonious and comprehensive unit.

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The number of electrons that pass through the bulb is 0.4375 x 10^19C when a light bulb requires a current of 0.70 a to emit a normal amount of light.

Given the current required for a light bulb (I) = 0.7A

Time for which light is left on (t) = 1h = 3600s

Let the number of electrons that pass through the bulb = n

We know that I = Q/t where Q is the charge flowing through the bulb.

Current is expressed as charge per unit time.

So, Q = I x t = 0.7 x 3600s = 2520C

We know that the charge on an electron (qe) = 1.6X10^-19C

Then, n = I/ 1electron charge = 0.70 / 1.6X10^-19

n = 0.4375 x 10^19C

Hence, the number of electrons that pass through the bulb is 0.4375 x 10^19C.

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We have that  the ball after it has been thrown out of parachute is

\(V_t=24ms^{-1}\)

From the Question we are told

Parachute Speed \(v= 20ms^-1\)

Ball Speed \(v= 4ms^{-1}\)

Generally the equation for the resultant speed of the ball  is mathematically given as

\(V_t=V_1+v_2\\\\v_t=20+4\)

\(V_t=24ms^{-1}\)

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Answer:

D. Weakest, Attractive

Explanation:

Gravitational Force is the weakest force out of the four forces, and Gravity attracts objects towards another so the answer has to be D.

Got this correct on Edge 2021.

Hope this helped!

Answer:

D

Explanation:

EDGE 2021

A radio wave travels at the speed of light, which is equal to approximately 300,000 km/s.

So, to travel a distance of 998.25 km, the time needed is:

Therefore the time required is approximately 3327.5 microseconds.

The video demonstrates that, when the same force was applied to both cars, the loaded automobile accelerated less slowly than the unloaded car, which was apparent because the laden car was heavier.

An object's acceleration is inversely proportional to its mass and directly proportional to the force acting on it. This means that the more massive an object is, the less it will accelerated for a given force. In this case, the loaded car had a greater mass than the unloaded car, so the same force produced a smaller acceleration for the loaded car. This is why the loaded car appeared to accelerate more slowly than the unloaded car. The difference in acceleration is a direct result of the difference in mass and the same applied force.

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(c) absorb the digested food

Explanation:

It is called villi' in case of human beings.. That's it..

The finger-like outgrowths in the human intestine are called villi, and their main function is to absorb the digested food. Therefore, the option is (c) absorb the digested food.

The villi in the human intestine increase the surface area for absorption, allowing for more efficient uptake of nutrients from the digested food. They contain blood vessels and lymphatic vessels that absorb nutrients such as sugars, amino acids, and fatty acids. The nutrients are then transported to the liver and other parts of the body for use.

The function of villi in humans is to increase the surface area of the small intestine, which allows for more efficient absorption of nutrients from digested food.

Villi are finger-like projections that line the walls of the small intestine, and they are covered in tiny microvilli that further increase the surface area. The villi contain blood vessels and lymphatic vessels that absorb nutrients such as sugars, amino acids, and fatty acids from the digested food.

These nutrients are then transported to the liver and other parts of the body for use. Without villi, the surface area of the small intestine would be much smaller, and the body would not be able to absorb nutrients as efficiently. Hence, option C is correct.

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Answer:

1. 180 m

2. 1.5 miles/hour

3. 0 m/s

Explanation:

The complete question is

A dog runs 300 m North and sees the dog catcher and runs 120 m south Whats the dogs displacement.

A jogger runs north for 3.0 miles. If this took 2.0 hours, what is the jogger’s average velocity in miles per hour?

The same jogger runs 3.0 miles on the track, starting and finishing his run after completing exactly 12 laps around the track. What is his average velocity?

1. Displacement is how far the dog moves from the original starting point.

If the dog runs 300 m north, and then 120 m south, then the displacement from the starting point will be

displacement = 300 - 120 = 180 m

2. Displacement of the jogger = 3 miles

Time taken by the jogger = 2 hours

velocity of the jogger = ?

Velocity is = displacement/time

velocity = 3/2 = 1.5 miles/hour

3. velocity = displacement/time

if the jogger completes exactly 12 laps around the track, then the jogger will return to the starting point. This means that the jogger's displacement from the starting point is 0 miles

Jogger's velocity will therefore be = 0 m/s

The rate of heat loss through a window covered with a 0.750 mm-thick layer of paper (thermal conductivity 0.0500 W/m⋅K) can be calculated using the formula:

q = kA (T1 - T2)/d

where q is the rate of heat loss, k is the thermal conductivity of paper (0.0500 W/m⋅K), A is the area of the window, T1 is the temperature inside the room, T2 is the temperature outside, and d is the thickness of paper (0.750 mm).

Assuming that the temperature inside the room is 20°C and outside temperature is 5°C, and that the area of the window is 1 m², we can calculate:

q = (0.0500 W/Mrk) × (1 m²) × (20°C - 5°C) / (0.750 mm)

q = 6.67 W

Therefore, if you cover your window with a 0.750 mm-thick layer of paper with thermal conductivity of 0.0500 W/m⋅K, you can expect to lose heat at a rate of approximately 6.67 W.

The air directly above is warmed by the ground, which is warmed by the Sun. Warm air near the surface enlarges and loses density relative to the ambient air. The lighter air expands at the reduced pressure at higher altitudes, which causes it to climb and cool. When it cools to the same temperature as the surrounding air and reaches that density, it stops rising.

A thermal is connected to a downward flow that surrounds the thermal column. At the top of the thermal, colder air is ejected, which causes the outside to move downward. The troposphere's (lower atmosphere's) characteristics have an impact on the size and power of thermals.

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After a while, as the water cools down, the pressure inside the carton reduces, and a vacuum forms inside the carton.The vacuum formed inside the carton causes the walls of the carton to compress .

When you lace water at 60°C in a plastic milk carton and seal the top tightly, gas cannot enter or leave the carton nd the carton may collapse. If the carton is strong enough, it may not collapse, but the pressure inside the carton will be significantly less than the atmospheric pressure outside.

When you place water at 60°C in a plastic milk carton and seal the top tightly, gas cannot enter or leave the carton. After a while, as the water cools down, the pressure inside the carton reduces, and a vacuum forms inside the carton. The pressure inside the carton decreases because the cooling water contracts, and the gas in the carton contracts, taking up less space. This results in the gas particles striking the carton walls with less force, which decreases the pressure of the gas in the carton.

The vacuum formed inside the carton causes the walls of the carton to compress, and the carton may collapse. If the carton is strong enough, it may not collapse, but the pressure inside the carton will be significantly less than the atmospheric pressure outside. The pressure inside the carton will be lower because the pressure of the atmosphere outside will be greater than the pressure inside the carton. Thus, if you try to open the carton, you will hear a hissing sound as the air rushes inside to fill the vacuum created inside the carton.

When you put water at 60°C in a plastic milk carton and seal the top very tightly so that gas cannot enter or leave the carton, and it cools down, the pressure inside the carton reduces, and a vacuum forms inside the carton. This vacuum will cause the walls of the carton to compress, and the carton may collapse. If the carton is strong enough, it may not collapse, but the pressure inside the carton will be significantly less than the atmospheric pressure outside. When you try to open the carton, you will hear a hissing sound as the air rushes inside to fill the vacuum created inside the carton.

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The specific heat capacity is 250 J/kg.°C

The amount required to increase a temperature per unit of mass is known as specific heat capacity. It is a constant having various values depending on the substance.

Using the formula for heat capacity:

ΔQ = mcΔT

ΔQ is the heat capacity, unit is in Joules (J)

m  is the mass, unit is in kg

c  is the specific heat capacity, unit is in J/kg.°C

ΔT is the change in temperature, unit is in °C

ΔT = T₂ - T₁

where

T₂ final temperature, unit is in °C

-T₁ initial temperature, unit is in °C

For the given information:

ΔQ =  1.00*10^4 Joules (J)

m = 2 kg

c  = c J/kg.°C

ΔT is the change in temperature, unit is in °C

ΔT = T₂ - T₁ = 40 - 20 = 20 °C

Thus from ΔQ = mcΔT

1.00*10^4  = 2 x c x 20

c =  1.00*10^4  / 40 =  250 J/kg.°C

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Answer:

(B)

Explanation:

Because what ever angle the surface is, the light will reflect of of it perpendicular.

Answer:

A lens placed in a transparent liquid becomes invisible because when refractive index of the material of the lens is equal to the refractive index of the liquid in which lens is placed under this condition no bending of light takes place when it travels from liquid to the lens, so both will start behaving like both are same things.

Explanation:

hope it helps :))

Lobster traps are designed so that a lobster can easily get in but cannot easily get out. It is possible to create a diathermic wall that allows heat to flow through in one direction only. Diathermic walls are barriers that permit heat to flow through them in both directions.

Such walls are used in industrial applications to separate hot and cold regions of a system or for temperature control. However, it is possible to create a diathermic wall that allows heat to flow through in only one direction.

Heat moves from hot to cold regions in nature due to the second law of thermodynamics. However, if the diathermic wall is made up of alternate layers of high- and low-conductivity materials, heat will flow more quickly in one direction than in the other.

The side with the high-conductivity material will have a lower temperature than the side with the low-conductivity material. This temperature difference generates an electric current that opposes the flow of heat in the opposite direction, effectively blocking it.

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Answer:

The answer to this question is given below in this explanation section.

Explanation:

              " the magnitude of the electrical force between two protons"

The electric force between two object is proportional to the inverse square of the object between two objects.The electric force between two electrons is the same as the electric force between two protons when they are placed as the same distance.This implies that the electric force does no depend on the mass    of the particle instead it depend on the new quantity:the electric charge.The unit of electric charge Q is the coulomb.The unit of electric charge q is the coulomb.The electric charge can be negative ,zero or positive.The electric charge on a glass rod rubbed with silk is positive.The electric charge of the electron proton and neutron are magnitude of the charge of the protons  is exactly equal to the magnitude of the charge of the electrons.The number of electrons must be equal to the number of protons.The prices magnitude of the electric force that a charged particle exerts on another is given by coulomb's law.

The magnitude of the electric force that a particular exerts on another particle is directly proportional to the product of their change and inversely proportional the square of the distance between them.

Answer:

Initial velocity = 39.2m/s

Maximum height is 78.4m

Explanation:

Given

\(Time, t = 4s\)

Solving (a): Initial Velocity

Using first law of motion:

\(v = u + at\)

Where

\(v = final\ velocity = 0\)

\(u = iniital\ velocity = ??\)

\(a = acceleration = -g\) [g represents acceleration due to gravity]

\(t = 4\)

Substitute these value in the above formula:

\(v = u + at\)

\(0 = u - g * 4\)

\(0 = u - 9.8 * 4\)

Take g as 9.8m/s²

\(0 = u - 39.2\)

\(u = 39.2m/s\\\)

Hence, initial velocity = 39.2m/s

Solving (b): Maximum Height

This will be solved using second equation of motion

\(s = ut + \frac{1}{2}at^2\)

This becomes

\(s = ut - \frac{1}{2}gt^2\)

Substitute values for u, t and g

\(s = 39.2 * 4 - \frac{1}{2} * 9.8 * 4^2\)

\(s = 156.8 - 78.4\)

\(s = 78.4\)

Hence, the maximum height is 78.4m

Answer:

No, because a basketball is bigger than a baseball, and objects that are bigger accelerate slower.

Explanation:

Answer:

F = 39.2 N   (hand force) and    N = 68.6 N (shoulder force)

Explanation:

In this exercise we must use the rotational and translational equilibrium conditions, we have several forces: the weight (W) of the pole applied at its geometric center, the load (w1) at one end, the shoulder support (N) 60 cm from the load and hand force (F) at the other end of the pole

Let's set the reference system at the fit point of the shoulder

     ∑ τ = 0

We will assume that the counterclockwise turns are positive

    w₁ 0.60 + W 0.1 + F₁ 0 - F 0.4 = 0

all distances are measured from the support of the man (x₀ = 0.60 m)

    F = (w₁ 0.60 + W 0.1) / 0.4

    F = (m₁ 0.6 + m 0.1) g / 0.4

let's calculate

    F = (2.6 0.6 + 0.4 0.1) 9.8 / 0.4

    F = 39.2 N

this is the force that the hand must exert to keep the system in balance

We apply the translational equilibrium condition

    -w₁ -W + N - F = 0

     N = w₁ + W + F

     N = (m₁ + m) g + F

let's calculate

     N = (2.6 + 0.4) 9.8 + 39.2

     N = 68.6 N

Answer:

Rahul is wrong.

Explanation:

From Newton's universal law of gravitation, we know that the force of attraction between two falling body masses is directly proportional to product of masses of two bodies and has an inverse proportional relation with the square of the distance between the masses.

If the 2 masses are M1 & M2, while distance between them is d, this can be written as;

F ∝ M1•M2

And F ∝ 1/d²

We also know that the acceleration due to gravity is given as;

g = GM/r²

Where;

M is the mass of earth

r is the radius of earth

From the above 3 formulas, we can deduce that the value of the acceleration due to gravity(g) is independent of the 2 masses of the falling body as it depends on only the mass of the earth and radius of the earth.

This means that the acceleration due to gravity will be the same whether the bricks are doubled or whether it remains single.

Thus, they will fall with same velocity in each case. So Rahul is wrong.

​

Answer:

T is less than or equal to 19 N

Explanation: