the reaction to the force in part a is a force of magnitude , exerted on the by the . its direction is .

Answer:

F = 780 [N]

Explanation:

To solve this problem we must use newton's second law which tells us that the sum of forces on a body must be equal to the product of mass by acceleration

ΣF =m*a

where:

F = force [N] (units of Newtons)

m = mass = 2600 [kg]

a = acceleration = 0.3 [m/s²]

F = 2600*0.3

F = 780 [N]

Answer:

When a branch of a tree is shaken, some of the fruits may fall down. Why? Solution : The fruits fall down due to inertia of rest.

Answer:

I HOPE IT WILL HELP YOU A LOT....

The characteristic of Earth that maintains its atmosphere is gravity. Gravity is the force that pulls the gas molecules towards the Earth's surface, preventing them from escaping into space.

The atmosphere is made up of different types of molecules, including nitrogen, oxygen, and carbon dioxide, which are constantly in motion due to the Earth's rotation and the heat from the sun. However, gravity is what holds these molecules in place and creates a stable atmosphere around our planet.In contrast, planets such as Mars and Venus have weaker gravity and have lost much of their atmospheres over time. Our moon also has no atmosphere, as it lacks the gravitational force necessary to hold onto gas molecules. Overall, the strength of gravity is a crucial factor in determining the stability and composition of a planet's atmosphere.

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complete question:

Some planets (and our moon) have no atmospheres. What characteristic of the Earth maintains the atmosphere surrounding our planet?

A. The types of molecules in the atmosphere.

B.  Gravity.

D. It has only one satellite.

D. Tides

Answer:

The Moon rotating around Earth and the Earth rotating around the Sun

Explanation:

Answer:

the rotation of Earth on its axis

Explanation:

Did it on study island

Answer: 267 m

Explanation:

2.99x10^8 m/s

———————-

1.12 x 10^6 Hz

part 1

mass = ρ x V

mass = 1739 kg/m³ x 3.8 km³ = 6608.2 kg

PE (potential energy)= mgh

PE = 6608.2 kg x 9.81 x 403

PE = 2.61 x 10⁷ J

part 2

megaton of TNT (Mt) =4.2 x 10¹⁵ J

convert PE to Mt:

2.61 x 10⁷ J : 4.2 x 10¹⁵ J = 6.21 x 10⁻⁹ Mt

Answer:

A or B(the answers)

Explanation:

they seem like the most right

Answer:

I'm pretty sure it's b

Explanation:

The total distance traveled in one full cycle of simple harmonic motion is twice the amplitude (A) of the oscillation.

Hence, the correct option is C.

The total distance traveled by the block in one full cycle of its motion can be determined by analyzing the nature of simple harmonic motion.

In simple harmonic motion, the block oscillates back and forth around its equilibrium position. During one complete cycle, it moves from its initial position to one extreme position, then returns to the equilibrium position, and finally moves to the other extreme position before returning back to the equilibrium position again.

The total distance traveled in one full cycle of simple harmonic motion is twice the amplitude (A) of the oscillation. This is because the block travels a distance of A in one direction to reach the first extreme position, and then it travels the same distance of A in the opposite direction to reach the other extreme position.

Therefore, the correct option is (c) 2A.

Hence, the correct option is C.

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The average molar mass of air at sea level and 0 °C is 0.02896 kg/mol.

The ideal gas law is given by PV = nRT

Where, P = pressure, V = volume, n = number of moles of gas, R = universal gas constant , T = temperature. We can manipulate the ideal gas law equation to get the expression: n = PV/RT. We can also rewrite the molar mass equation as: M = mRT/PV Where, M = molar mass, m = mass of gas, n = number of moles of gas, R = universal gas constant, T = temperature, P = pressure, V = volume.

Substituting the expression for n in the molar mass equation, we get:M = mRT/PV = (m/P) (RT/n) = (m/P)

Molar mass, M = (density of gas)(universal gas constant)(temperature)/pressure,

M = (1.29 kg/m³) (8.314 J/mol K) (273.15 K) / (101325 Pa) = 0.02896 kg/mol.

Therefore, the average molar mass of air at sea level and 0 °C is 0.02896 kg/mol.

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Answer:

It allows people to not float around in the air, it allows earth to orbit, and it holds down the air from the atmosphere so that we could breathe

Answer:

gravity is important bc we cant live without it. The sun's gravity keeps earth in orbit around it. It holds down our atmosphere and air we need to breath.

Explanation:

Answer:

A.protons and neutrons in the nucleus.

Question :-

Answer :-

Explanation :-

As per the provided information in the given question, The Resistance is given as 20 Ohm's . Current is given as 1.5 Amperes . And, we have been asked to calculate the Voltage .

For calculating the Voltage , we will use the Formula :-

\( \bigstar \: \: \: \boxed {\sf { \: Voltage \: = \: Current \: \times \: Resistance \: }} \)

Therefore , by Substituting the given values in the above Formula :-

\( \Longrightarrow \: \: \: \sf { Voltage \: = \: Current \: \times \: Resistance } \)

\( \Longrightarrow \: \: \: \sf { Voltage \: = \: 1.5 \: \times \: 20 } \)

\( \Longrightarrow \: \: \: \bf { Voltage \: = \: 30 } \)

Hence :-

\( \underline {\rule {180pt}{4pt}} \)

Additional Information :-

\(\Longrightarrow \: \: \: \sf {Voltage \: = \: Current \: \times \: Resistance} \)

\( \Longrightarrow \: \: \: \sf {Current \: = \: \dfrac {Voltage}{Resistance}} \)

\( \Longrightarrow \: \: \: \sf {Resistance \: = \: \dfrac {Voltage}{Current} } \)

Answer:

Explanation:

Given:

To Find:

Solution:

Using formula:

By Substituting the required values,

⇢ Voltage = 1.5 × 20

⇢ Voltage = 30 Volts.

Hence,

Answer:

At 23.5 deg north of the equator this person would see the sun directly overhead at the summer solstice at noon

formula: m1 * d1 = m2 * d2

datos:

m1= 45 kg

d1= 160 cm

m2= 38 kg

d2= x

reemplazamos datos en formula:

45kg * 160cm = 38kg * d2

El 38 pasa al otro lado de la igualdad a dividir:

(45kg * 160cm) / 38 kg = d2

Resolvemos: (kg se cancela con kg, quedando solo los cm)

7200cm / 38 = d2

Resultado:

d2 = 189.5 cm

Respuesta: La condición que se debe cumplir es que la distancia del centro al niño de la derecha sea de 189.5cm

Answer:

Explanation:

The total distance covered by the car will be the sum total of the distance moved during the journey.

Distance moved towards east = 5 km

Distance moved towards west = 48km

Total distance covered = Distance moved towards east+Distance moved towards east

Total distance covered  = 5km+48km

Total distance covered  = 53km

Hence the total distance a car would travel if it moves 5 km East and then turns and travels 48 km West is 53km

Answer:

V1i=252.5m/s

Explanation:

Inelastic collision

so the equation should be: m1v1i+m2v2i=(m1+m2)Vf

plug the numbers into the equation: 0.02(v1i)+2(0)=(0.02+2)2.5

so the answer should be: V1i=252.5m/s

Answer:

\(\vec{B}_{y}=6T\)

Explanation:

Here we can use the Lorentz force equation.

\(\vec{F}_{B}=q(\vec{v}\times \vec{B})\)

We know:

So we will have:

\( (0.4i-20j+12k)=2((2.0i+4.0j+6.0k) \times (ai+bj+ck))\)  

Let's solve the cross product, knowing that x component of B is 0, it means a=0.

\( (0.4i-20j+12k)=2((2.0i+4.0j+6.0k) \times (0i+bj+ck))\)  

\( (0.4i-20j+12k)=2((4c-6b)i-2cj+2bk)\)  

Comparing the k component we have:

\(12=2b \)

\(b=6 \)            

If we see b is the y-component of the magnetic field, therefore \(\vec{B}_{y}=6T\)

I hope it helps you!

-0.033 units

According to Lorentz force law, the magnetic force, F, on a moving charge, q, moving with a velocity, v, in a magnetic field, B, is given by;

F = q v x B   ----------------(i)

Where;

F, v and B are vectors. Therefore, equation (i) represents a vector product of the velocity and magnetic field vectors.

From the question;

v = (2.0i + 4.0j + 6.0k)m/s

F = (0.4i - 20j + 12k)N

q = 2.0C

Let the magnetic field vector be given by;

B = ai + bj + ck               ---------------------(*)

Where;

a, b and c are the magnitudes of the x, y and z components of the magnetic field.

Substitute the values of F, v, B and q into equation (i) as follows;

(0.4i - 20j + 12k) = 2.0(2.0i + 4.0j + 6.0k) x (ai + bj + ck)

Expanding the second bracket gives

(0.4i - 20j + 12k) = (4.0i + 8.0j + 12.0k) x (ai + bj + ck)          ---------------(ii)

Solving the right hand side of equation (ii) which is the vector product gives;

                                       |                                       |

                                       |  i               j                 k |

 (0.4i - 20j + 12k) =        |  4.0         8.0         12.0  |

                                      |  a             b                 c  |

                                      |                                        |

(0.4i - 20j + 12k)  = (8.0c - 12.0b)i - (4.0c -12.0a)j + (4.0b - 8.0a)k      ----(iii)

Comparing both sides of equation (iii) gives the following three equations;

0.4 = 8.0a - 12.0b           --------------------(iv)

-20 = 4.0c - 12.0a          ---------------------(v)

12 = 4.0b - 8.0a             ----------------------(vi)

From the question, it is given that the x component of the magnetic field is equal to zero. Now, recall that from equation (*) above, the magnitude of the x-component of the magnetic field is given as a

Therefore;

a = 0

To get the y component, which is b, substitute the value of a = 0 into equation (iv) as follows;

0.4 = 8.0(0) - 12.0b

0.4 = 0 - 12.0b

0.4 = - 12.0b

Solve for b;

b = \(\frac{-0.4}{12.0}\) = -0.033

Therefore the y component of the magnetic field is -0.033 units

Answer:

there u go :)

Explanation:

False. The 0.50 kg mass will not cause the meter stick to rotate clockwise.

The meter stick will remain stationary if the mass is placed on one end of the stick and the other end is not supported by a counterweight or other force.

The reason for this is that the mass is not centered on the stick, meaning that the center of gravity of the meter stick and the mass will be off center. This will cause the stick to be unbalanced and thus remain stationary.

In order to cause the meter stick to rotate clockwise, it would need to be balanced, with the center of gravity of the mass and the stick aligned. The mass would then need to be moved in a circular motion in order to cause the stick to rotate.

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When dealing with the acceleration due to gravity, it's important to consider the sign convention. In most cases, the downward direction is assigned a negative sign, while the upward direction is assigned a positive sign.

In the given scenario, the rocket is moving vertically upward, which means it is going against the direction of gravity. Therefore, the acceleration due to gravity should be assigned a negative sign (-9.80 \(m/s^2\)) to indicate that it is acting in the opposite direction of the rocket's motion.

However, when you analyze the motion of the rocket relative to the window, you need to consider the rocket's velocity and acceleration with respect to the window frame.

In this case, the upward direction is considered positive because the rocket is moving upward relative to the window. Therefore, you would use a positive value (+9.80 \(m/s^2\)) for the rocket's acceleration in the context of the window frame.

It's essential to be mindful of the sign convention and apply it correctly depending on the specific situation and the frame of reference you are considering.

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The process that primarily transfers heat by moving air is convection.

Convection is a heat transfer process that involves the movement of a fluid, such as air or water, due to differences in temperature or density. When air is heated, it becomes less dense and rises, while cooler, denser air sinks to take its place. This creates a circular motion known as a convection current, which transfers heat from one location to another.

This is why fans are often used to cool down a room, as they help to circulate the air and enhance the heat transfer by convection. Convection is also responsible for many atmospheric phenomena, such as wind, thunderstorms, and hurricanes.

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--The complete question is, Which process primarily transfers heat by moving air.--

Answer:

Etc....

Explanation:

#keep learning!!

Explanation:

POTENTIAL energy is the energy that is stored in an object due to its position relative to some zero position.

In all of the following, with the exception of, degeneracy pressure is the source of the pressure that prevents the crush of gravity. The correct option is D) a very massive main-sequence star.

It's possible that small main-sequence stars will continue to fuse hydrogen for hundreds of billions of years. Red dwarfs are what we call these stars.

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The 2.4 GHz band has been classified by the ITM as an unlicensed spectrum just for microwave ovens. Three appealing characteristics of this band stand out: it can heat meals at relatively little power and doesn't take much power to broadcast.

All of these reduced the price and entrance barrier for customers. A microwave is an electromagnetic wave with a low frequency and relatively long wavelength. Despite having greater frequencies than conventional radio waves, microwaves are frequently categorized as radio waves. They have more or greater amount of energy and very higher frequencies.

The 2.4 GHz band has been classified by the ITM as an unlicensed spectrum just for microwave ovens. Because of this, microwaves can be used to heat food in microwave ovens.

Microwaves are handy for heating food in microwave ovens because of this. In essence, microwaves are very high frequency radio waves that are produced by several types of transmitters. They are created by a transmitter chip and an antenna in a mobile phone, and a "magnetron" in a microwave oven. Their wavelength is typically in the range of a few centimeters.

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Answer:

B. Photo receptors in the eye detect visible light which is part of the wider electromagnetic spectrum

Explanation:

Electromagnetic spectrum is wide and huge and a range in this spectrum (around wavelenght 380 to 700 nanometers) is called visible light spectrum which is the only light that our eyes can see.

Thus photoreceptors in eye detect visible light which is part of bigger spectrum (we CANNOT see the entire electromagnetic spectrum only a small range which is known as visible light spectrum range).

I know the answer but the wording is tricky so I am not sure between A and B. Im sorry if I get it wrong. A sounds sort of right but I would not go with it cuz it says receptors detect electromagnetic spectrum (but we DO NOT detect all of the spectrum only a small portion)

Go with your gut.