. In a wave, …………………… is carried from one place to another.
1.Energy
2.Transverse 3.Longitudinal
4.Medium

Given data:

* The distance traveled by the air conditioner is,

Solution:

As the air conditioner is falling freely under the action of gravity.

Thus, the acceleration of the air conditioner is equal to the acceleration due to gravity.

As the air conditione ris falling itself from the height.

Thus, the initial velocity of the air conditoner is,

By the kinematics equation, the final velocity of the air conditioner is,

Substituting the known values,

Thus, the final velocity of the air conditioner is 21.69 m/s.

By the kinematics equation, the time taken by the air conditioner,

where t is the time taken by the air conditioner to reach the ground,

Substituting the known values,

Thus, the time taken by the air conditioner ot reach the ground is 2.21 seconds.

When three different resistors are connected in series to a battery, the current through all resistors is the same.

In a series circuit, there is only one path for current to flow through. Current is the same through each component.

In a series circuit, the total voltage is divided across each component, and the voltage drop across each component is proportional to its resistance.

The equivalent resistance of the circuit is the sum of all resistors. It is not an algebraic sum, rather it is the arithmetic sum of the resistors. Hence, option A is incorrect.

The other two statements are also incorrect as the voltage on each resistor is not the same, it is divided across each resistor in proportion to its resistance. Therefore, the correct statement about the given circuit is: Currents through all resistors are the same.

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Answer:

There are layers on the Earth.  There is gas on the Sun.

This means that the answer is...

D: Gas

The position of a particle moving in a straight line is given by s(t) = (e⁻ᵗ)(cos(5t)) for t > 0, where t is in seconds. If the particle changes direction at time T seconds, then T must satisfy the equation: cos(5T) = 0.

The correct answer is option A.

The particle changes direction when its velocity vector changes direction, or the velocity of the particle becomes zero. Therefore, we must take the first derivative of s(t) and solve for t when the derivative is equal to zero. That is,

v(t) = ds/dt = - e⁻ᵗ cos 5t - 5 e⁻ᵗ sin 5t, and if v(t) = 0, then we can solve for t.

By factoring out the common factor, we can write the expression for the velocity as

v(t) = - e⁻ᵗ (cos 5t + 5 sin 5t) = 0.

Since the exponential function is never zero, we can cancel it from both sides, and we get cos 5t + 5 sin 5t = 0.

We can rewrite this expression as

cos 5t = - 5 sin 5t = - sin 5t / cos 5t.

Hence,

tan 5t = - 1 / 5, and the smallest positive value of t that satisfies this equation is t = T.

Therefore, T satisfies the equation cos 5T = 0.

So, correct answer is option A. cos(5T) = 0

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Answer:

D. Tan(5T)=-1/5

Answer:

686 N

Explanation:

OH BOY, NEWTONS LAWS OF MOTION!

look at this:

\(F = ma\)

a fun fact is that acceleration 9.8 m/s^2 is actually GRAVITY.

so lets do this and rewrite the formula...

\(F = 70kg * 9.8 m/s^2\)

lets multiply 70 and 9.8

we get 686 N.

if you want to be technical about it...... the answer should only have two sig figs. so it would be... \(6.9 * 10^{2}\) N

NICE!

The final velocity of the electron starting from rest is 9.3 × 10⁶ m/s.

Given:

Initial velocity (v0) = 0 m/s

Electric field (E) = 8.0 × 10⁴ N/C

Distance (∆x) = 5.0 cm = 0.05 m

Mass of electron (me) = 9.11 × 10⁻³¹ kg

Charge of electron (e) = 1.6 × 10⁻¹⁹ C

Final velocity (v) = ?

Using the following equation to calculate the final velocity of the electron:

v² = v0² + 2a∆x

Where:

v = final velocity

v0 = initial velocity

a = acceleration

∆x = distance

The acceleration of the electron is given by the electric field, E, and the mass of the electron, me, as follows:

a = E/me

Plugging in the known values:

a = (8.0 × 10⁴ N/C) / (9.11 × 10⁻³¹ kg) = 8.75 × 10¹⁴ m/s²

Plugging in all the known values in the equation for v:

v² = (0 m/s)² + 2 × (8.75 × 10¹⁴ m/s²) × (0.05 m)

v² = 8.75 × 10¹³ m²/s²

v = 9.3 × 10⁶ m/s

Therefore, the final velocity of the electron is 9.3 × 10⁶ m/s.

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Answer:

s=105 km/hr

Explanation:

s=speed

d=distance

t=time

s=?

d=420km

t=4hrs

equation: s=d/t

s=420/4

s=105km/hr

Answer:

H₀ = 1.6 x 10⁻¹⁸ s⁻¹

Explanation:

The Hubble's Constant can be found by the following formula:

\(v = H_o D\\\\H_o = \frac{v}{D}\)

where,

H₀ = Hubble's Constant = ?

v = speed of galaxy = 30000 km/s = 3 x 10⁷ m/s

D = Distacance = 600 Mpc = (6 x 10⁸ pc)(3.086 x 10¹⁶ m/1 pc)

D = 18.52 x 10²⁴ m

Therefore,

\(H_o = \frac{3\ x\ 10^7\ m/s}{18.52\ x\ 10^{24}\ m}\)

H₀ = 1.6 x 10⁻¹⁸ s⁻¹

1. In ferromagnetic materials, the net magnetic moment arises from the alignment of electron spins when a magnetic field is applied.

2. Magnetotactic bacteria and certain animals, such as lobsters, honeybees, homing pigeons, and sea turtles, are believed to possess magnetite in their bodies, allowing them to detect and navigate using the Earth's magnetic field.

1. Electrons in atoms have two kinds of intrinsic angular momentum, spin, and orbital momentum. The origin of ferromagnetism is attributed to the net magnetic moment of electrons in a ferromagnetic material's lattice.

The Pauli exclusion principle causes the electrons to be split between two possible spin directions, up and down. As a result, the total magnetic moment of the material is zero because it is composed of equal numbers of spin-up and spin-down electrons. When a magnetic field is applied to a ferromagnetic material, the magnetic moments of the electrons become aligned, causing the material to become magnetized.

2. Magnetotactic bacteria possess magnetite in their bodies. These bacteria utilize the earth's magnetic field for navigation purposes. Animals that are capable of magnetoreception are referred to as magnetotactic. Many organisms utilize the earth's magnetic field to locate their migratory paths or to locate prey. Lobsters, honeybees, homing pigeons, and sea turtles are among the animals that are suspected of possessing magnetotactic abilities.

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Answer:

C

Explanation:

The acceleration will be negative, as in the problem statement, the upwards direction is defined as positive (the object is shot upwards and has a positive velocity), so immediately, we can eliminate A and B.

You can then use the kinematics equation:

\(v=v_o+at\), where

a= -9.8 m/s^2 (acceleration due to gravity)

t= 4 s (time)

v\(_0\)= 20 m/s (initial speed)

when you solve, the final velocity is -19.2 m/s, so the velocity is negative (the object is on its way down).  

Answer:

PRESSURE is a force exerted by the substance per unit area on another substance.

The key difference between water pressure and air pressure is that one is made up of water and the other is made up of air. Both air pressure and water pressure are based on and follow the same physical principals.

Explanation:

Answer:

75g

Explanation:

Given parameters

Mass of product  = 375g

Mass of reactant X  = 300g

Unknown:

Mass of reactant Y  = ?

Solution:

To solve this problem, we need to understand the law of conservation of mass. The law states that "matter is neither created nor destroyed in a chemical reaction".

So;

      Mass of X + Mass of Y   =  Mass of product

            Mass of Y = Mass of product  - Mass of X

           Mass of Y  = 375  - 300  = 75g

weight represents the amount of force on a given mass

The moon orbiting the earth and Gravity pulls skydiver down towards the surface of the earth from an airplane are examples of a non-contact force

Non-contact forces are forces that act between two objects that are not physically touching each other.

That means that there is no contact but there exist force between them .The moon orbiting the earth due to gravitational force between both the bodies , this is a non contact force . Because moon is in not in contact with the earth , still both the bodies are exerting force on each other

Also Gravity pulls skydiver down towards the surface of the earth from an airplane is also an example of non contact force because there is no contact between skydiver and earth , still due to earth's gravitational force , it is been attracted towards the ground

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Answer:Kinetic energy of the girl and her bike is 5.544 kJ

Explanation:

Given that a girl is riding bike at speed of 12m/s

Also, mass of Girl is 55kg and mass of bike is 22kg

Let, Total mass of girl and bike be M=22+55=77kg

Now, Kinetic energy is given by K=

Hence, Kinetic energy of the girl and her bike will be

K=

K=

K=5544J

Thus, Kinetic energy of the girl and her bike is 5.544 kJ

Answer:

t = 8.55 years

Explanation:

The formula for power is given as:

Power = Work/Time

but, the work here is equal to the increase in potential energy of the water. Therefore,

Power = P.E/Time

P = mgh/t

t = mgh/P

where,

t = time required = ?

P = Power of pump = 2.21 KW = 2210 W

m = mass of water = 3.2 x 10⁷ kg

h = height = 1.9 km = 1900 m

g = 9.8 m/s²

Therefore,

t = (3.2 x 10⁷ kg)(9.8 m/s²)(1900 m)/(2210 W)

t = (2.69 x 10⁸ s)(1 h/3600 s)(1 day/24 h)(1 year/365 days)

t = 8.55 years

Answer: These ideas, that all men are created equal and that government is based on the consent of the governed, became the foundation for the US political ideal of popular sovereignty: that the government exists to serve the people, who elect representatives to express their will.

Explanation: Hope this helped! <3

Answer:

If the car comes to a sudden stop, your body tends to keep moving forward.

Explanation:

The ball's potential energy is completely changed into its kinetic energy (E k), which is equal to 250 J, when it hits the ground.

If v is the speed the ball was traveling at when it hit the ground, then

E(k) = 1 /2 mv^2

V= √2Ek/m

V= √2*250/ 2

V= 15.81 m/s

potential energy, which is a form of stored energy that depends on the relative positions of different components in a system. When a spring is compressed or stretched, its potential energy increases. If a steel ball is raised above the ground as opposed to falling to the ground, it has more potential energy.

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The cyclic frequency of the resulting motion is 1.438 Hz. when  the acceleration due to gravity is 9.8 m/s 2. Because the mass possesses kinetic energy at the static equilibrium displacement, which is translated into potential energy stored in the spring at the extremes of its journey, oscillations happen.

Given:
Force constant of the spring = k
Displacement from equilibrium point = 21.9 cm
Displacement from equilibrium point during oscillation = 8.1 cm
Acceleration due to gravity = 9.8 m/s²Formula used:
The frequency of oscillation is given by the formula f = 1/2π √(k/m)
where k is the force constant of the spring and m is the mass of the object.

In this case, we do not have the mass of the weight, but we can assume that the weight is the only object oscillating, and therefore its mass will be considered as m. If the weight is denoted by w, then its mass will be w/g, where g is the acceleration due to gravity.

Therefore,
m = w/g

Displacement during oscillation = 8.1 cm
= 0.081 m
The maximum extension of the spring from the equilibrium point during the oscillation will be the sum of the equilibrium position and the displacement from the equilibrium point during oscillation, i.e.
y = 21.9 cm + 8.1 cm
= 30 cm
= 0.3 m

Frequency of oscillation f

1/2π √(k/m)
Substituting m = w/g, we get
f = 1/2π √(k/(w/g))
f = 1/2π √(kg/w)
Now we will calculate k.
k = mg/y
where m is the mass of the weight, g is the acceleration due to gravity, and y is the maximum extension of the spring from the equilibrium point during the oscillation.
Substituting values, we get
k = (w/g)(9.8 m/s²)/(0.3 m)
k = 32.67w/g
Substituting this value in the equation for frequency, we get
f = 1/2π √(32.67w/gw)
f = 1/2π √(32.67/g)
f = 1.438 Hz

Therefore, the cyclic frequency of the resulting motion is 1.438 Hz.

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The coordinate distance that a stick of length 5m takes up radially in the field of a black hole where GM/(c^2r) = 30 × 10^-2 is approximately 0.429 meters. The Schwarzschild radius formula is used to determine this. It is an equation that relates the mass of an object to the radius of a sphere surrounding it, which is known as the Schwarzschild radius.

What is the Schwarzschild radius formula?The Schwarzschild radius formula is derived from Einstein's general theory of relativity, which states that gravity warps the fabric of spacetime. According to the formula, the Schwarzschild radius (rs) is determined by the following equation:rs = 2GM/c^2Where G is the gravitational constant, M is the mass of the object, and c is the speed of light. If a mass is compressed into a space smaller than its Schwarzschild radius, it becomes a black hole.

Furthermore, for a stick of length 5 m in length, the coordinate distance that it takes up can be determined as follows:Length of the stick = 5mSchwarzschild radius (rs) = 2GM/c^2 = 30 x 10^-2 mTherefore, the coordinate distance that a stick of length 5 m takes up radially in the field of a black hole where GM/(c^2r) = 30 × 10^-2 is approximately 0.429 meters.

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Answer:

\( \boxed{\sf Distance \ travelled = 62.5 \ m} \)

Given:

Initial velocity (u) = 25 m/s

Final velocity (v) = 0 m/s (Rest)

Time taken (t) = 5 seconds

To Find:

Distance travelled by car (s)

Explanation:

From equation of motion of object moving with uniform acceleration in straight line we have:

\( \boxed{ \bold{s = (\frac{v + u}{2} )t}}\)

By substituting value of v, u & t in the equation we get:

\( \sf \implies s = ( \frac{0 + 25}{2} ) \times 5 \\ \\ \sf \implies s = \frac{25}{2} \times 5 \\ \\ \sf \implies s = 12.5 \times 5 \\ \\ \sf \implies s = 62.5 \: m\)

\( \therefore\)

Distance travelled by car (s) = 62.5 m

The distance  car travel during that time is 62.5 meter.

Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates.

Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

Initial velocity (u) = 25 m/s

As the car becomes rest, final velocity (v) = 0 m/s (Rest)

Time taken (t) = 5 seconds.

The deceleration of the car: a = (initial speed - final speed)/time interval

= ( 25 m/s - 0 m/s)/5 second

= 5 m/s²

The distance  car travel during that time = ut - at²/2

= 25 × 5.0 meter - (5×5²/2) meter

= 62.5 meter.

Hence, the distance  car travel during that time is  62.5 meter.

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The coordination complex [V(H2O)6]3+ can be identified as paramagnetic. Paramagnetic substances are weakly attracted to a magnetic field and exhibit magnetic properties. Therefore, [V(H2O)6]3+ is paramagnetic.

Paramagnetic substances are attracted to a magnetic field due to the presence of unpaired electrons, whereas diamagnetic substances are not affected by a magnetic field as all the electrons are paired. To determine the magnetic nature of [V(H2O)6]3+, we need to examine the electron configuration of the central vanadium (V) ion.

Vanadium (V) has an atomic number of 23, and its electronic configuration in the ground state is [Ar] 3d3 4s2. When vanadium forms coordination complexes, it often utilizes its d-orbitals for bonding. In [V(H2O)6]3+, the vanadium ion is in a +3 oxidation state, which means it has lost three electrons from its neutral state. Therefore, we remove the electrons from the 4s and 3d subshells to obtain the electron configuration of [V(H2O)6]3+ as [Ar] 3d2.

The 3d2 configuration indicates that two of the five 3d orbitals of vanadium are occupied by electrons, leaving three unpaired electrons. Since [V(H2O)6]3+ has unpaired electrons, it is paramagnetic.

Identify each of the following coordination complexes as either diamagnetic or paramagnetic

[ZnCl4^2-]

[Pd(NH3)2CL2]

[V(H2O)6]3+

Ni(en)3]2+

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Answer: the force when the catapult swings has the same force as it does when coming down

Explanation:

for every reaction there is an equal opposite reaction

Answer:

the answer is kinetic energy

Answer:

The doctors could see if her cells are getting the molecules they need from food and air

Explanation:

The doctors could see if her cells are getting the molecules they need from food and air. Doing so allows the doctors a general overview of how well her body's biological systems are performing since the basic necessities of the human system are food and oxygen. Therefore if the body is receiving both food and oxygen properly and distributing it properly and efficiently as well without any problems then the most likely outcome is that she is healthy enough to perform her tasks in the submarine under more pressure.

Answer:

The doctors could see if her cells are getting the molecules they need from food and air

Explanation: