Object A is traveling at half the speed of light colliding with object B that is stationary. How does object A experience time in comparison to object B and how does object B experience time in comparison to object A before there collision?

The direction in which the induced current flows in the loop when a square wire loop is in a time-varying magnetic field with magnitude B(t)=At, where A>0 and the plane in which the square is located has an angle θ(<90∘) with the direction of the magnetic field is an option (B) clockwise when viewing from above on the front and back segments, counterclockwise in the sides.

How to find the direction of the current flow?

According to Faraday's law of electromagnetic induction, the induced emf in a circuit is equal to the rate of change of the magnetic flux through the circuit. That is,e= -d(Φ)/where e is the emf, Φ is the magnetic flux, and t is time. Since e is induced emf, it is given by the negative of the derivative of magnetic flux. The magnetic flux is given by,Φ = B.A.cosθwhere B is the magnetic field, A is the area, and θ is the angle between the normal to the surface and the magnetic field. Differentiating this equation with respect to time, we get,d(Φ)/dt = d(B.A.cosθ)/dtOn simplifying,d(Φ)/dt = A.cosθ.dB/in this case, B(t) = AtSo,dB/dt = A.Using this value, we get,d(Φ)/dt = A².cosθTherefore, the induced emf e is given by,e = -d(Φ)/dt = -A².cosθThe direction of the induced current is given by Lenz's law which states that the direction of the induced current is such that it opposes the change that caused it. In this case, the magnetic flux is increasing with time. Therefore, the direction of the induced current is such that it produces a magnetic field that opposes the increasing magnetic field. So, the direction of the induced current flow in the loop is clockwise when viewed from above on the front and back segments, and counterclockwise in the sides. Therefore, the answer is option (B).

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Answer: A.

Explanation: Because it is like when you rub your knees on a rug it is tensional so that would make it a not active force.

According to the scientific method, you have to make observations and ask questions before you can form a hypothesis.

The scientific method is a series of steps or procedures which scientists follow in their process of discovery and explanation of the natural world or natural phenomena.

The scientific method consists of the following steps:

In conclusion, observations and questions are important before formulation of hypothesis.

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Answer:

6.86 × 10²⁴ kg

Explanation:

The mass of the earth m = density of earth, ρ × volume of earth, V

m = ρV

The density of the earth, ρ = 5515 kg/m³ and since the earth is a sphere, its volume is the volume of a sphere V = 4πr³/3 where r = radius of the earth = 6.67 × 10⁶ m

Since m = ρV

m = ρ4πr³/3

So, substituting the values of the variables into the equation for the mass of the earth, m, we have

m = 5515 kg/m³ × 4π(6.67 × 10⁶ m)³/3

m = 5515 kg/m³ × 4π × 296.741 × 10¹⁸ m³/3

m = 5515 kg/m³ × 1189.9639π × 10¹⁸ m³/3

m = 6546105.64378π × 10¹⁸ kg/3

m = 20565197.400122 × 10¹⁸ kg/3

m = 6855065.8 × 10¹⁸ kg

m = 6.8550658 × 10²⁴ kg

m ≅ 6.86 × 10²⁴ kg

The kinetic energy of the baseball with a mass of 0.14 Kg and 30 m/s speed is 63 J.

Kinetic energy of an object is generated by virtue of its motion. It is dependant on the mass and speed of the object. Thus as mass or speed increases, kinetic energy increases.

The equation connecting the kinetic energy with the mass and speed , v is given as follows:

Ke = 1/2 m v²

Given that the mass = 0.14 kg

speed = 30 m/s.

kinetic energy = 1/2 0.14 × 30² = 63 J.

Therefore, the kinetic energy of the baseball is 63 J.

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To determine which situation will produce the greatest change of momentum for a 1.0-kilogram cart, we need to compare the magnitudes of the impulse in each situation. Impulse is defined as the change in momentum of an object and is equal to the force applied multiplied by the time interval over which the force acts.

Impulse = Force * Time, the impulse for each situation:

1) Impulse = (Force) * (Time) = (5 N) * (2 s) = 10 N·s

2) Impulse = (Force) * (Time) = (10 N) * (0.5 s) = 5 N·s

3) In this situation, we need to calculate the initial momentum (p_initial) and final momentum (p_final) to find the change in momentum.

Initial momentum (p_initial) = mass * initial velocity = 1.0 kg * 0 m/s = 0 kg·m/s

Final momentum (p_final) = mass * final velocity = 1.0 kg * 3 m/s = 3 kg·m/s

Change in momentum = Final momentum - Initial momentum = 3 kg·m/s - 0 kg·m/s = 3 kg·m/s

4) In this situation, we again calculate the initial momentum (p_initial) and final momentum (p_final) to find the change in momentum.

Initial momentum (p_initial) = mass * initial velocity = 1.0 kg * 2 m/s = 2 kg·m/s

Final momentum (p_final) = mass * final velocity = 1.0 kg * 4 m/s = 4 kg·m/s

Change in momentum = Final momentum - Initial momentum = 4 kg·m/s - 2 kg·m/s = 2 kg·m/s.

The situation that will produce the greatest change in momentum for the 1.0-kilogram cart is situation 1, where a net force of 5 N is applied for 2 seconds, resulting in an impulse of 10 N·s.

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Answer:

The big rip theory

Explanation:

      I believe what you are referring to is the big rip theory, in which the universe expands faster than the speed of light Kurzgesagt refers to it as a "horizon" but in reality it's a little more complicated than that. Eventually the expansion of the universe will accelerate far beyond the speed of light creating space between molecules until eventually all matter is fleeting and the entire universe is an endlessly vast cosmic void with not but the occasion molecule left from a time when things weren't so lonely.

the atomic radius get bigger.

this is because as you add more electrons to an anion the electrons get farther apart.

they do this because they don't like each other so when you add more they need more space to stay away from each other

Answer:

The pressure on the floor is 12 Pascal(Pa).

Explanation:

Given,

Force (F) = 240N

Area (A) = 20 cm^2

Pressure (P) = ?

we know that,

P = F/A

= 240/ 20

= 12 Pa

Answer:

212 f

Explanation:

An adiabatic process is one in which no heat enters or leaves the system, and the change in internal energy is equal to the mechanical work done. Therefore, the correct answer is option c. I, iii, and iv.

An adiabatic process is characterized by the absence of heat transfer between the system and its surroundings. In other words, no heat enters or leaves the system during an adiabatic process

(i). However, this does not imply that only mass is allowed to cross the system boundary

(ii). Adiabatic processes can occur in both open and closed systems. Additionally, during an adiabatic process, the temperature of the system can change

(iii). This change in temperature is a result of the work done on or by the system. The change in internal energy is equal to the mechanical work done (iv) because there is no heat transfer to account for. Thus, the correct answer is option c. I, iii, and iv.

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Answer:

To find the distance, use the formula for distance d = st, or distance equals speed times time.

Answer:

Speed=distance/time

time=distance/speed

distance=speed *time

Answer:

F = 100 N

Explanation:

The torque is given by the expression

      τ = F x r

where bold letters indicate vectors, the magnitude of this expression is

     τ = F r sin θ

In general, when tightening a nut, the force is applied perpendicular to the arm, therefore  θ = 90 and sin 90 = 1

      τ = F r

      F = τ / r

calculate

      F = 30 / 0.30

      F = 100 N

Explanation:

gas vibrate and moves freely at high speeds, liquid vibrate, move about, and slide past each other. solid vibrate (jiggle) but generally do not move from place to place

hope it helps you

Answer:

38

Explanation:

76 divided by 2 =38

Answer:

Momentum, product of the mass of a particle and its velocity. ... Momentum is a vector quantity; i.e., it has both magnitude and direction. Isaac Newton's second law of motion states that the time rate of change of momentum is equal to the force acting on the particle.

Answer:

h = 493 m

Explanation:

Given that,

A rock is dropped from a sea cliff, and the sound of it striking the ocean is heard 2.9 s later.

The total distance covered by the rock is 2d. We know that,

Speed = distance/time

\(v=\dfrac{2d}{t}\\\\d=\dfrac{vt}{2}\\\\d=\dfrac{340\times 2.9}{2}\\\\d=493\ m\)

So, the height of the cliff is equal to 493 m.

Answer:

If the person rises 12 ft per revolution that person will

rise 18 ft in 1 and 1/2 revolutions

E = m g h = W h          where W is the weight of the person

E = 149 lb * 18 ft = 2682 ft-lbs

The force acting on the body by its weight is 656.6 N. The displacement for him is 2.4 m. Then the work done is 1595.5 J.

Work done is a physical quantity describing the force acted over a displacement. It is the dot product of force and displacement.

Given that, the weight of the person = 149 lb

1 lb = 0.45 kg

149 lb = 149 × 0.45 = 67 kg.

weight in Newton = 67 kg × 9.8 m/s² = 656.6 N

The displacement he made = 12 ft - 4 ft = 8 ft

1 ft = 0.3 m

then 8 ft = 8 × 0.3 = 2.4 m

Now, work done W = f. ds

W = 2.4 m × 656.6 N = 1595.5 J

Therefore, the work done by the person weighing 149 lb walking exactly one and a half revolution(s) up a circular, spiral staircase of radius 4 ft if the person rises 12 ft after one revolution is 1595.5 J.

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Answer:

B: Cardio is really to improve your circulatory and etc while strength that's common sense  

Explanation:

Answer:

B

Explanation:

Non - Metals:

Some terms:

★ Malleable: This means that metals can be beaten into thin sheets with hammer.

★ Ductile: This means that metals can be drawn into thin wires.

★ Brittle: This means that non-metal break into pieces on hammering.

★ Sonorous: This means capable of producing a ringing sound.

Answer:

Explanation:

If the force of 2000 N is directed towards the right and the friction is directed towards the left, the 2000 N force is positive and the other is negative. To find the resultant force:

2000 - 500 = 1500 N to the right

a) The microscopic total cross section of water is 25.6 barns.

b) The macroscopic total cross section of steam is \(4.25 cm^-1.\)

c)  The macroscopic total cross section of the steam-water mixture is \(1.7 cm^-1.\)

(a) To find the microscopic total cross section of water, we need to sum up the contributions from hydrogen and oxygen:

σ_total = σ_H + σ_O

σ_total = 21.8 b + 3.8 b

σ_total = 25.6 b

Therefore, the microscopic total cross section of water is 25.6 barns.

(b) To find the macroscopic total cross section of steam, we need to multiply the microscopic total cross section of water by the number density of steam molecules. The number density of steam molecules can be found using the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature. Rearranging this equation to solve for n/V gives:

n/V = P/RT

Since we know the pressure and density of steam, we can solve for the number density:

n/V = P/RT = (\(0.036 g/cm^3\))/(8.31 J/(mol*K) * 373 K) = 1.66 × \(10^19\)molecules/\(cm^3\)

Now we can find the macroscopic total cross section of steam:

Σ = σ_total * (number density of steam molecules)

Σ = 25.6 b * (1.66 × \(10^19\) molecules/\(cm^3\))

Σ = 4.25 \(cm^-1\)

Therefore, the macroscopic total cross section of steam is \(4.25 cm^-1.\)

(c) To find the macroscopic total cross section of the steam-water mixture, we need to take a weighted average of the macroscopic cross sections of water and steam:

Σ_mix = f_water * Σ_water + f_steam * Σ_steam

where f_water and f_steam are the volume fractions of water and steam, respectively. We are given that 40% of the volume is occupied by steam, so f_steam = 0.4 and f_water = 0.6.

Substituting in the values for Σ_water and Σ_steam that we found in parts (a) and (b), we get:

Σ_mix = 0.6 * \(0 cm^-1\) + 0.4 * 4.25 \(cm^-1\)

Σ_mix = 1.7 \(cm^-1\)

Therefore, the macroscopic total cross section of the steam-water mixture is \(1.7 cm^-1.\)

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To determine which subatomic particle has a longer lifespan, we compare the average lifetimes of the tau lepton and the neutral pion. The average lifetime of the tau lepton is 2.906 x 10^-12 seconds, and the average lifetime of the neutral pion is 8.4 x 10^-17 seconds.

Comparing these values, we can see that the average lifetime of the tau lepton (2.906 x 10^-12 seconds) is significantly longer than the average lifetime of the neutral pion (8.4 x 10^-17 seconds).

To calculate how many times longer the lifespan of the tau lepton is compared to the neutral pion, we divide the average lifetime of the tau lepton by the average lifetime of the neutral pion:

(2.906 x 10^-12 seconds) / (8.4 x 10^-17 seconds) = 3.453 x 10^4

Therefore, the tau lepton has a lifespan that is approximately 3.453 x 10^4 (34,530) times longer than the neutral pion.

To support a sign with a mass of 180 g using two vertical strings, you need to ensure that the tension in each string can hold up half of the total weight of the sign.

Since the mass of the sign is 180 g, you first need to calculate its weight (W) using the formula W = mg, where m is the mass and g is the acceleration due to gravity (approximately 9.8 m/s²). Convert the mass to kilograms (0.18 kg) and then calculate the weight:
W = 0.18 kg × 9.8 m/s²
W = 1.764 N (Newtons)
Now, divide the total weight by 2 to find the tension (T) required in each string:
T = 1.764 N / 2
T = 0.882 N
So, each vertical string needs to support a tension of 0.882 N to hold the sign up.
To support a 180 g sign using two vertical strings, the tension in each string should be 0.882 N. This ensures that the sign is evenly supported and remains in equilibrium.

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The minimum distance on the other side of the pivot such that a 220 N force will make the child lift off the ground is 1.51 meters.

To determine the minimum distance on the other side of the pivot such that a 220 N force will make the child lift off the ground, we need to use the principle of moments.

We know that the child has a mass of 15 kg, and is located 1.5 m from the pivot. The weight of the child acts downward and produces a moment around the pivot. We can calculate the moment produced by the weight of the child as follows:

M_child =\(m * g * d = 15 kg * 9.8 m/s^2 * 1.5 m = 220.5 Nm\)

where m is the mass, g is the acceleration due to gravity, and d is the distance from the pivot.

To lift the child off the ground, we need to apply a force that produces a moment equal to or greater than the moment produced by the child's weight. We know that the force required is 220 N, and we need to find the minimum distance on the other side of the pivot such that this force will produce a moment of 220.5 Nm or greater.

We can rearrange the equation for the moment to solve for the distance:

d = \(M / (m * g)\)

Put values:

d = \((220.5 Nm) / (15 kg * 9.8 m/s^2) = 1.51 m\)

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Answer:

in the ball

Explanation:

potential energy is where an object has energy, always, but it isn't always moving, and when you drop the ball, it has kinetic energy.

Answer:

C. The light waves will bend as they hit the water and slow down because water is a denser medium than air.

Explanation:

Refraction, or the bending of light, is caused by a change in the medium through which it passes. Air and water have different optical densities. As a result, light that enters the water is refracted more normally.

The persοn is mοving at a speed οf 55 miles per hοur in the Sοuth directiοn when the persοn is 50 miles West and 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur.

Tο determine the speed at which the persοn is mοving, we can use the cοncept οf relative velοcity.

Let's cοnsider the hοrizοntal and vertical cοmpοnents separately:

Hοrizοntal Cοmpοnent:

The persοn is walking due East, which is perpendicular tο the Nοrth directiοn οf the car. Therefοre, the hοrizοntal cοmpοnent οf the persοn's velοcity dοes nοt affect the speed at which the persοn is mοving away frοm the car.

Vertical Cοmpοnent:

The persοn is 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur. This indicates that the persοn's vertical pοsitiοn is changing with time. Since the persοn is mοving in the Sοuth directiοn and the distance is increasing, the persοn's speed can be determined by the rate οf change οf the vertical distance.

Given that the distance is increasing at a rate οf 55 miles per hοur, the persοn's speed in the Sοuth directiοn is 55 miles per hοur.

Therefοre, the persοn is mοving at a speed οf 55 miles per hοur in the Sοuth directiοn when the persοn is 50 miles West and 70 miles Sοuth οf the car, and the distance between them is increasing at a rate οf 55 miles per hοur.

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Answer:

3 is right i guss look : 100N-20N=80N