a certain superconducting magnet in the form of a solenoid of length 0.50 m can generate a magnetic field of 9.0 t in its core when its coils carry a current of 75 a. the windings, made of a niobium-titanium alloy, must be cooled to 4.2 k. find the number of turns in the solenoid.

Answer:

As we said, horizontal projectile motion equations are a special case of general formulas. We don't need to specify the angle of launch, as it's parallel to the ground (so the angle is equal to 0°). As a result, we have only one component of initial velocity - Vx = V, whereas Vy = 0.

horizontal projectile motion

We will take the starting point to be at the origin. Then, the equations of motion can be written as:

Distance

Horizontal distance can be expressed as x = V

Explanation:

This horizontal projectile motion calculator is a tool to solve a special case of projectile motion - the one where an object is launched horizontally from an elevated plane. Type in any two values, and the rest will be calculated in a blink of an eye! Furthermore, the trajectory will be displayed below the results. Keep scrolling to find out the horizontal projectile motion equations and a simple example of calculations - you shouldn't have problems with your exercises after reading our explanation!

The force needed to accelerate a car at 5 m / s² that has a mass of 3,000 kg is 15 KN

F = m a

F = Force

m = Mass

a = Acceleration

m = 3000 kg

a = 5 m / s²

F = 3000 * 5

F = 15000 N

F = 15 KN

According to Newton's second law of motion, the force is equal to the rate of change of momentum of the object.

Therefore, the acceleration of the car is 15 KN

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In order the weight feels tripled, the elevator should be moving upward with acceleration 2g m/s² or two times of gravitational acceleration.

The free body diagram is shown on the attached picture.

The scale will read the normal force.

Suppose the elevator is moving upward. Using the Newton's second law of motion:

∑F = m.a

N - w = ma

N = mg + ma

Suppose the elevator is moving downward.

w - N = ma

N = w - ma

N = mg - ma

Where:

m = mass

a = acceleration

g = gravitational acceleration

From the above 2 cases, in order the scale to read the measured weight higher than its actual weight, N should be greater than w, or N = mg + ma, or the elevator should be moving upward.

The weight feels tripled means N = 3 mg.

Hence,

3 mg = mg + ma

a = 3g - g = 2g

Therefore, in order the weight feels tripled, the elevator should be moving upward with acceleration 2g m/s²

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The magnitude of the velocity of 10.4kg mass after the collision is 12.8m/s

Using the law of conservation of momentum

Sum of momentum before collision = sum of momentum after collision

m1u1 +m2u2 = m1v1+m2v2

m1 = 8.19kg

u1 = 16.6m/s

m2 = 10.4kg

u2 = 0m/s(at rest)

v1 = 2.24m/s

v2 = ?

Substitute

8.19(16.6)+10.4(0) = 8.19(2.24)+10.4v2

146.4=18.3+10v2

146.4-18.4 = 10v2

128 = 10v2

v2 = 128/10

v2 = 12.8m/s

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The expression to represent the number of rocks Divya has after she collects rocks on n nature hikes is 35 + 3n.

Science is a methodical endeavor that creates and arranges knowledge in the form of universe-related explanations and predictions that can be put to the test.

Some of the earliest archeological evidence for scientific reasoning is tens of thousands of years old, and science may be as old as the human species. Ancient Egypt and Mesopotamia produced the oldest written documents in the history of science between 3000 and 1200 BCE.

Initially Divya has 70 rocks, after that she donated half of the rocks to science center means she has now 35 rocks left.

According to the question, she collects 3 rocks on each of her nature hikes, so the expression will be :

35 + 3n where,

n= number of hikes.

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The final vertical velocity of the soccer ball is 20 m/s.

We need to know about the projectile motion to solve this problem. The projectile motion is known as parabolic motion and the velocity is divided by 2 axes.

vox = vo cosA

voy = vo sinA

where vox is initial velocity of x axis, voy is initial vertical velocity, vo is initial velocity and A is the angle.

From the question above, the given parameters are

vox = 15 m/s

h = 40 m

x = 60 m.

The time taken of horizontal motion will be

x = vox . t

60 = 15 . t

t = 4 s

By using the uniform motion, where vty = 0 m/s and time taken to reach the peak is half of total time. Hence

vty = voy - gt

0 = voy - 10.(1/2 . 4)

voy = 20 m/s

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Answer:

The fruit came first

Explanation:

Answer:

467N (3sf)

Explanation:

360.6/cos(39.5) = 467.3257019

Answer:

Newton's First Law

Explanation:

As you had already mentioned the explanation about the querry you have,

I accept the reasons you have mentioned.

Definitely an upward force will balances the downward force on the skydiver, And the unbalanced force pulls the skydiver towards ground was the Gravitational force. As there is no any other acceleration, the velocity of the skydiver towards the ground is 9.8.

The skydiver's motion can vary in different views like,

1. A person in the plane view is a parabolic path.

2. A person from the ground view is straight line path.

So, the skydiver's motion varies according to the observer view.

date: 09-10-2022

Answer: A

Explanation: yes

If the resultant force acting on the van is 1500 Newtons, then the magnitude of Force X would be 1500 Newtons as X is the only horizontal force opposing the motion of the van.

Newton's Second Law states that the resultant force acting on an object is proportional to the rate of change of momentum.

As given in the problem statement If the resultant force acting on the van is 1500 Newtons, then we have to find the magnitude of Force X,

The magnitude of the Force X = 1500 Newtons

Thus, the magnitude of the force X would be 1500 as it is the only force acting on the van.

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Time with program duration at a constant amount of acceleration: 1 to 4 seconds. In mechanics, acceleration is the price you pay for exchanging the speed of an object for time.

Acceleration is a vector quantity. The direction of acceleration of an object is given by the direction of the net force acting on it. Acceleration is the name we give to any method of adjusting speed. If you think of velocity as velocity and path, then there is the simplest way to acceleration: change alternate velocity or alternate path - or both.

Acceleration (a) is the exchange of the ratio (Δv) for the change in time (Δt) expressed by the equation a = Δv/Δt. There are three styles of ascent motion: uniform acceleration, non-uniform acceleration, and medium acceleration. . Uniform acceleration, non-uniform acceleration, and medium acceleration are three types of improved motion. Uniform time acceleration refers to the motion in which an object moves in a straight line, jumping with the speed at equal time intervals.

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The acceleration due to gravity on astronaut on the alien planet will be 6.38 m/s²

Weight is a force exerted by earth on a body in a vertically downwards direction towards its center.

Mathematically -

Weight [W] = mass [m] x acceleration due to gravity [g].

Given is an astronaut whose weight is 655 N on Earth and the same astronaut weighs 465 N on an alien planet.

We can write -

Weight on earth [W] = 655 N

Acceleration due to gravity on Earth [g] = 9.8 m/s²

Weight on alien planet [W'] = 465 N

Assume the acceleration due to gravity on alien planet be g'.

Then -

W[earth] = mg = W.

W[alien planet] = mg' = W'.

Since the mass remains same, we can say that -

m[earth] = m[alien planet]

W/g = W'/g'

g' = (W'g)/W

g' = (465 x 9.8)/655

g' = 6.38 m/s²

Therefore, the acceleration due to gravity on astronaut on the alien planet will be 6.38 m/s²

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The acceleration due to gravity on the surface of the Moon is 1.635 m/s² and on the surface of Venus is 8.8634 m/s².

There is acceleration, gravitational force, and acceleration due to gravity, all three are completely different from each other.

We know that the acceleration of gravity on the moon = 1/6 acceleration of gravity on the Earth

Therefore, the acceleration of gravity on the surface of the moon is given as

= 9.81 / 6

= 1.635 m/s²

b) For any planet (Venus) the acceleration of gravity is given as

g = GM/ R²

G = 6.67 × 10⁻¹¹

M = 4.88 × 10²⁴

R = 6.06 × 10⁶

g = ( 6.67 × 10⁻¹¹)(4.88 × 10²⁴) / (6.06 × 10⁶)²

g = 8.634 m/s²

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Answer: The Earth's gravity is too strong.

Explanation: I don't have a full understanding, but probably the Earth is too strong. If you push yourself up, it'll feel difficult.

A dragster gets to a speed of 112 m/s over a distance of 300 m from the rest, then the acceleration will be 20.9 m/s².

The rate of change in an object's velocity with respect to time is known as acceleration in mechanics. The vector quantity of accelerations. The direction of the net force that is acting on an object determines its acceleration.

Since acceleration has both a magnitude and a direction, it is a vector quantity. Velocity is a vector quantity as well. The definition of acceleration is the change in velocity vector over a time interval divided by the time interval.

According to the question, the given values are :

Final velocity, v = 112 m/s.

Initial velocity, u = 0 m/s

Distance, s = 300 m.

Use the equation of motion,

v² - u² = 2as

112 ² - 0 = 2 (a)(300)

a = 12544/600

a = 20.9 m/s².

Hence, the acceleration of the dragster will be 20.9 m/s².

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k=4 n/m, A=0.09 m, and m=0.617 kg.

1) T = m/n square root of 2 pi T = 2.466 sec

2) where w = 3.4606 rad/s and w = square root of k/m

Vmax = A*w = 0.311 m/s 3) a max = A*w*w  

 a max =7.389 m/s square

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Answer:

V = a t

t1 = 15 / 9.8 = 1.53 sec       time to reach 0 speed

t2 = t1 = 1.53 sec        time to reach point thrown

t3 = 5 - 2 * 1.53 = 1.94 sec    time to fall height of cliff

H = V0 t - 1/2 g t^2       time to fall height of cliff   (if V0 positive)

V0 = -15 m/s since it will return to thrown height with speed thrown up

Signs chosen must be consistent

H = -15 * 1.94 - 1/2 9.8 * 1.94^2 = -47.5 m where H is height of cliff

The

Answer:

look at the explanation

Explanation:

If this is the case, the pancake at the highest temperature will make the backside pancake the warmest due to transfer of thermal energy.

The switch of thermal strength between the hotter pancake and the backside pancake occurs through conduction. Conduction is a mode of transfer of thermal energy that takes place when the two bodies are in shut contact with each other.

After they have been touching for a while, the temperature of the backside pancake increases while the temperature of the top pancake decreases in view that thermal power is being transferred from the pinnacle pancake to the backside pancake.

The induced EMF in the Loop of the Antenna due to oscillating magnetic field is -0.207 Volts.

We know,

The EMF induced = -(The rate of change of magnetic flux with time)

E = -d(MA)/dt

Here,

E is the induced emf,

M is the magnetic field,

A is the area of the loop.

As we can see, area is constant,

E = -AdM/dt

The value of M is 24sin(ωt).

So, putting the value of M,

E = -Ad(24sin(ωt))/dt

E = -A(24ωcos(ωt))

We know,

ω = 2πf

where

f is the frequency,

Now, we can write,

For maximum emf, cos(ωt) = 1,

So, E = -(A.24.2πf)

So, finally,

E = -πr².24.2πf

where, r is the radius of the loop,

The value of frequency f is 170MHz and,

the value of r is 25cm, 0.25 in meters,

Putting all the values,

E = 3.14 x 0.25 x 0.25 x 24 x 2 x 3.14 x 170 x 10⁶

E = -209.51 x 10⁶ nV.

1 nV = 10⁻⁹V

so,

E = -209.51 x 10⁶ x 10⁻⁹ V

E = -0.209 V

So, the induced EMF is -0.207 V.

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Complete Question - A loop antenna, such as is used on older televisions to pick up UHF broadcasts, is 25 cm in diameter. The plane of the loop is perpendicular to the oscillating magnetic field of a 170 MHz electromagnetic wave. The magnetic field in (nT) through the loop is 24sin(ωt), where ω is the angular frequency of the wave. What is the maximum emf induced in the antenna?

Answer:

Geothermal energy

Explanation:

Answer:

it is defined as the study of living things and their environment

69

69
69

69                                                      44444444444444444444444444444444

Answer:

The extension of an elastic object when a force is applied, such as a spring, is described by Hooke's law: force = spring constant × extension.

Height of the rocket launcher from the ground will be 33.7 m.

Initial speed of the rocket launcher = 20.8 m/s

Rocket launcher makes an angle of 53.1° from the ground.

Since the motion of the rocket is a projectile motion, as the rocket is projected from an angle of 53.1° from the ground, height of the rocket can be calculated using the formula [tex]h = \frac{v^{2}Sin^{2}\alpha }{2g}[/tex],

'h' is the height of the rocket

'v' is the final velocity of the rocket

'[tex]\alpha[/tex]' is the angle made by the rocket from the ground

' v' can be calculated by using the equations of the motion as v - u = gt

v = u + gt

v = 20.8 + (9.81) * (1.43)

v = 34.8 m/s

So,

 [tex]h = \frac{v^{2}Sin^{2}\alpha }{2g}[/tex]

[tex]h = \frac{34.8^{2} Sin^{2}53 }{2*9.81}[/tex]

h = 33.7 m

The rocket will be 33.7m high from the ground after 1.43 seconds.

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Last option is correct that is the relationship between wavelength of light and the quantity of energy per photon is inversely related.

Energy is inversely correlated with wavelength because it is directly proportional to the electromagnetic frequency of the photon. The energy of a photon increases with its frequency. In other words, the energy of a photon decreases with increasing wavelength. Wavelength and frequency are related to energy in the same way that they are to light. Greater energy is correlated with shorter wavelengths and higher frequencies. Therefore, lower energy is produced by longer wavelengths and lower frequencies. E = hv is the energy equation. When we increase the denominator, the fraction also increases, resulting in a decrease in energy. As a result, energy and wavelength have an inverse relationship.

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Answer:

44 ohms.

Explanation:

R for V (according to Ohm's law). This second formula is more frequently used in practice to calculate resistive heating, whereas the first formula has other, more general applications. As we might infer from the equation, the units of watts also correspond to amperes2 x ohms (A2 x Ω).

The direction of the net force acting on an object defines the direction of its acceleration. The acceleration of the plane is 8.75 m/s².

Any procedure where the velocity varies exists directed to as acceleration. There are only two ways to accelerate: changing your speed or changing your direction, or changing both. This exists because velocity exists both a speed and a direction.

The initial speed of a plane is [tex]$v_{i s}[/tex] = 300 m/s

Distance covered by plane is s = 4 km = 4000m

The final speed of the plane is [tex]$$v_{f s}[/tex] = 400 m/s

The acceleration of the plane.

Using kinematical equation v²[tex]{ }_{f s}[/tex] = v²[tex]{ }_{\text {is }}[/tex] + 2as

Substitute known values in the above equation, we get

400² = 300² + 2 a(4000)

simplifying the above equation, we get

400² -300² = 8000 a

a = 70000/8000

= 8.75 m/s²

Therefore, the acceleration of the plane is 8.75 m/s².

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The Average speed is 42.44 km/h ,the distance between cities is 99.02kmSpeed is the rate at which something or someone is moving.

The average speed of an object can be determined if you know the distance traveled and the time it took. Distance times speed is how speed is computed. In order to compute the units for speed, you must be aware of the units for both distance and time. Given that the distance in this example is measured in metres (m) and the duration is recorded in seconds, the units will be metres per second (m/s) For the purpose of calculating the other two, we require the other two (time, speed, or distance). To determine how long it will take to complete a journey, for example, information about the distance and speed of travel is needed.

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Answer:

use disk drill to recover files

Explanation: