What are interference and diffraction? Under what circumstances do they occur?

Angle formed between the vectors of centripetal acceleration and centripetal force is 0°.

Centripetal force is a pressure that acts on an object with a view to direct it closer to a center of curvature. The force generated by means of your arm puts the yo-yo itself in movement, and the tension on the string continues it moving in a circular direction as you twirl it.

One common place instance concerning centripetal pressure is the case wherein a body actions with uniform pace along a circular route. The centripetal force is directed at proper angles to the movement and also alongside the radius closer to the centre of the round route.

Centripetal force is a force on an object directed to the center of a round path that maintains the object at the route. Its price is based totally on three factors:

1) The speed of the item because it follows the round route;

2) The object's distance from the center of the route;

3) The mass of the object.

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Answer:The hypothesis (or hypotheses) for this experiment would be :

1) Experiment of motion( movement) can be performed in this lab.

2) Experiment of motion( movement) can be performed better in this lab.

3)  Only experiments of motion( movement) can be performed in this lab.

4) Experiment of motion( movement) can be performed more accurately in this lab.

5) No experiment of motion( movement) can be performed in this lab.

Explanation:

The hypothesis (or hypotheses) for this experiment would be :

Experiment regarding motion( movement) can be performed in this lab.

And Conclusion would be:

This lab is for motion.

We can only conclude that this lab is for motion when we find out that the motion experiments can be performed better or with higher accuracy or none other experiment can be carried out as easily as the motion experiment.

We only conclude when we test the hypothesis .

The hypothesis can be tested in a number of ways such as showing better results, or showing negative results of the said statement.

So there can be a few hypotheses as follows.

1) Experiment of motion( movement) can be performed in this lab.

2) Experiment of motion( movement) can be performed better in this lab.

3)  Only experiments of motion( movement) can be performed in this lab.

4) Experiment of motion( movement) can be performed more accurately in this lab.

5) No experiment of motion( movement) can be performed in this lab.

Explanation:

Answer:

h = 4.905 m

Explanation:

In order to find the distance covered by the object in 1 second, we can use the second equation of motion:

\(h = v_i t + \frac{1}{2}gt^2\\\)

where,

h = distance covered = ?

vi = initial speed = 0 m/s

g = acceleration due to gravity = 9.81 m/s²

t = time = 1 s

Therefore,

\(h = (0\ m/s)(1\ s)+\frac{1}{2}(9.81\ m/s^2)(1\ s)^2\\\\\)

h = 4.905 m

Answer:

The answer is B.

Explanation:

They are in control of the experiment, they can change it the variables to better help the experiment.

Answer:

b

Explanation: its b

Answer:

The backbone, spine or vertebral column is made up of 26 small bones called the vertebrae.

The characteristics of bones include:

1. They are strong and rigid

2. They are composed of bone cells called osteocytes.

3. They are lightweight

4. They have a honeycomb-like matrix internally, which helps to give them rigidity.

5. They exist in various types and shapes.

6. They have the ability to grow and repair when damaged

7. They contain inorganic minerals such as calcium and phosphate

The two types of joints are the movable and immovable joints.

Ligaments are bands of tough elastic fibrous tissue around that found around the joints whose function is to link bone to bone, give support to joints as well as limit their movement.

Explanation:

The backbone, spine or vertebral column is made up of 26 small bones called the vertebrae. The 26 small bones include 24 separate vertebrae interspaced with cartilage, and then additionally the sacrum and coccyx. The vertebral column is divided into five regions: cervical, thoracic, lumbar, sacral and coccygeal regions.

A bone is a rigid tissue that is part of the skeleton in vertebrate animals. The characteristics of bones include:

1. They are strong and rigid

2. They are composed of bone cells called osteocytes.

3. They are lightweight

4. They have a honeycomb-like matrix internally, which helps to give them rigidity.

5. They exist in various types and shapes.

6. They have the ability to grow and repair when damaged

7. They contain inorganic minerals such as calcium and phosphate

Joints are the junctions where two bones meet. They serve various functions which include allowing for movement of the body and binding the skeleton together.

The two types of joints are the movable and immovable joints.

Ligaments are bands of tough elastic fibrous tissue around that found around the joints whose function is to link bone to bone, give support to joints as well as limit their movement.

Answer:

5. Vertebrae

Explanation:

A back bone made up of 26 small bones is called a vertebrae.

The Answer should most likely be A

Explanation:

you see B and C are pretty much the same but A has more weight and more wheels (sorry been a while sense I did this so I am calling the wheel and axel points what they look like to me) with having more wheels and axels and more weight it should have a higher force advantage.

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Question 1.

Given:

Mass = 1200 kg

Velocity = 100 km per hour.

Let's find the change in momentum it will expperience.

To find the change in momentum, apply the formula:

Where:

Δp is the change in momentum

m is the mass of the car = 1200 kg

vf is the final velocity

vi is the initial velocity.

Here, the final velocity is = 0 m/s

The initial velocity is = 100 km/h

Let's convert the initial velocity to m/s.

Where:

1 m/s = 3.6 km/h

100 km/h = 100/3.6 = 27.78 m/s

Input the values into the formula and solve for Δp.

We have:

Therefore, the change in momentum is 33333.33 kg.m/s

Question 2.

Since the safety zone for momentum is 0 to 1000 kg.m/s, to find the minimum velocity of the car, substitute 1000 kg.m/s for Δp and solve for the final velocity vf

We have:

Therefore, the minimum velocity the car can slow down to a velocity is 26.94 m/s.

ANSWER:

(a). 33333.33 kg/m.s

(b). 26.94 m/s

The base of table is "1.08856 m" far away from the ball land.

Given:

Distance travelled by ball,

Initial velocity,

Acceleration,

Constant speed,

As we know the formula,

→ \(S = ut+\frac{1}{2}at^2\)

By substituting the values, we get

→ \(1.2=\frac{1}{2}\times 9.8t^2\)

→ \(1.2 = 4.9 t^2\)

→    \(t = \sqrt{\frac{1.2}{4.9} }\)

→      \(= 0.4948 \ seconds\)

Let,

→ \(x = 2.2\times t\)

     \(= 2.2\times 0.4948\)

     \(= 1.08856 \ m\)

Thus the solution above is right.

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A wave where particles move perpendicular to its energy is a transverse wave. In a transverse wave, the particles of the medium vibrate or oscillate perpendicular to the direction of energy propagation.

This means that the disturbance in the medium is perpendicular to the direction of the wave's motion. Examples of transverse waves include light waves, water waves, and seismic S waves.

In contrast, longitudinal waves are waves where the particles of the medium vibrate or oscillate parallel to the direction of energy propagation. The disturbance in the medium is parallel to the direction of the wave's motion. Examples of longitudinal waves include sound waves and seismic P waves.

Therefore, a wave in which the particles move perpendicular to its energy is a transverse wave.

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Answer:

Chemical engineering is a multi-disciplinary branch of engineering that combines natural and experimental sciences such as chemistry and physics, along with life sciences such as biology, microbiology and biochemistryplus mathematics and economics to design, develop, produce, transform, transport, operate

Explanation:

Answer:

A. the process needs to produce significant amounts of ammonia

C. the process needs to be able to be performed safely

Explanation:

a p e x

Answer:

exothermic

Explanation:

Answer:

Traveled = 6 steps     displacement = 0    

Explanation:

see attached 'sketch'

The internal resistance of the washing machine is 28.24 Ω.

Current drawn by the washing machine, I = 8.5 A

Voltage of the supply, V = 240 V

Internal resistance of the washing machine = ?

We know that Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

Mathematically, it is represented as:

V = IR

Where,

V = Voltage

I = Current

R = Resistance

Here, the current drawn by the washing machine, I = 8.5 A

And, the voltage of the supply, V = 240 V

Let us assume the internal resistance of the washing machine is Rᵢ.

Using Ohm's law:

V = IR

⇒ R = V / I

⇒ R = 240 V / 8.5 A = 28.24 Ω

Therefore, the internal resistance of the washing machine is 28.24 Ω.

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Answer:

Use the AU formula

Explanation:

1 astronomical unit = 149597871 kilometer

Answer:

30 mph

Explanation:

1800 divided by 60

When an object travels at a constant speed with zero acceleration it is known as uniform rectilinear motion. Then its velocity is given by:

v = d / t

Where d is distance and t is time. Evaluating:

v = 1800 m / 60 s

Answer:

40,000 s

Explanation:

Find the acceleration of the train given the mass and the force applied.

Convert 2 kN to N --> 2000 N.

Substitute the train's mass and applied force into Newton's 2nd Law:

SInce the train is slowing down, the acceleration should be negative.

Using the acceleration, initial velocity, final velocity, we can solve for time using this kinematic equation:

It will take 40,000 seconds to bring the train to a stop if a 2 kN frictional force is applied.

Magntude of the eltric field at radial distances is 12.8a^2.

V = 4/3 r3, where V stands for volume and r for radius, is the equation for a sphere's volume. Half the diameter makes up a sphere's radius.

A conducting sphere has no electric field inside of it. In the same way as a point charge, the electric field outside the sphere is determined by the equation E = kQ/r2. On the outside of the sphere, there is an extra charge.

The curved surface area of the sphere is equal to its entire area because it has a completely curved shape. Alternatively, it is known as lateral surface area. Sphere's radius (r) and its surface area (a) are both expressed as 4r2.

Explanation:

2*2a*2.4a =r =9.6a^2

V = 4/3 *9.6a^2 = 1.3334 * 9.6a^2 = 12.8a^2.

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Part A) The magnitude of the current density in the wire is 5.48×10⁵ A/m².

Part B) The magnitude of the electric field in the wire is 0.00916 V/m.

Part C) The time required for an electron to travel the length of the wire is approximately 9.51×10⁴ seconds or 264 hours.

Part A:

The current density, J, is defined as the amount of current per unit area perpendicular to the direction of current flow. For a wire with square cross section, the current density can be found as:

J = I / A

where

I is the current flowing through the wire and

A is the cross-sectional area of the wire.

The cross-sectional area of the wire is given by:

\(A = (2.7 mm)^2\)

   = 7.29×10⁻⁶ m²

Substituting the given values, we get:

J = 4.0 A / 7.29×10⁻⁶ m²

 = 5.48×10⁵ A/m²

Therefore, the magnitude of the current density in the wire is 5.48×10⁵ A/m².

Part B:

The electric field in the wire, E, can be found using Ohm's law, which relates the electric field, current density, and the conductivity of the material:

J = σE

where

σ is the electrical conductivity of the material.

The electrical conductivity of copper is 5.96×10⁷ S/m.

Substituting the values, we get:

E = J / σ

  = (5.48×10⁵ A/m²) / (5.96×10⁷ S/m)

  = 0.00916 V/m

Therefore, the magnitude of the electric field in the wire is 0.00916 V/m.

Part C:

The time required for an electron to travel the length of the wire can be found using the formula:

t = l / v

where l is the length of the wire and v is the drift velocity of electrons.

The drift velocity of electrons can be found using the relation:

J = nev

where

n is the number density of free electrons and

e is the charge of an electron.

Rearranging this equation for v, we get:

v = J / (ne)

Substituting the given values, we get:

v = (5.48×10⁵ A/m²) / (8.5×10²⁸ m⁻³ × 1.6×10⁻¹⁹ C)

  = 4.1×10⁻⁵ m/s

Substituting this value and the given length of the wire into the formula for time, we get:

t = 3.9 m / 4.1×10⁻⁵ m/s

 = 9.51×10⁴ s

Therefore, the time required for an electron to travel the length of the wire is approximately 9.51×10⁴ seconds or 264 hours.

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Answer:

(e) remain the same as the pipe diameter changes.

In an ideal fluid, the sum of kinetic energy per unit volume (also known as the velocity head) and pressure is known as the total head and is a constant along a streamline. This is described by the Bernoulli's equation, which states that the total head is constant along a streamline as long as the fluid is incompressible and frictionless. Therefore, if the pipe diameter varies along its length, the total head would remain the same at different sections of the pipe, even though the kinetic energy and pressure would change.

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The tension in the string suspending the weight of the block is determined as 6.47 N.

Tension is defined as the force transmitted through a rope, string or wire when pulled by forces acting from opposite sides.

The tension in the rope used in towing the car up hill is calculated as follows;

T = ma

where;

Substitute the given parameters and solve for the tension in the string suspending the weight of the block.

T = 0.66 kg x 9.8 m/s²

T = 6.47 N

Thus, the tension in the string suspending the weight of the block is determined as 6.47 N.

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Answer:

630 km.

Explanation:

To obtain the total distance travelled by David, we shall calculate the distance travelled in each, then sum them together.

Case 1:

Speed 1 (S₁) = 65 km / hour

Time 1 (t₁) = 6 hours

Distance 1 (d₁) =?

Speed = Distance /time

S₁ = d₁ / t₁

65 = d₁ / 6

Cross multiply

d₁ = 65 × 6

d₁ = 390 Km

Case 2:

Speed 2 (S₂) = 80 km / hour

Time 2 (t₂ ) = 3 hours

Distance 2 (d₂) =?

Speed = Distance /time

S₂ = d₂ / t₂

80 = d₂ / 3

Cross multiply

d₂ = 80 × 3

d₂ = 240 Km

Finally, we obtained the total distance travelled by David as follow

Distance 1 (d₁) = 390 Km

Distance 2 (d₂) = 240 Km

Total Distance travelled (dₜ) =?

Total distance = distance 1 + distance 2

dₜ = d₁ + d₂

dₜ = 390 + 240

dₜ = 630 km

Therefore, the total distance travelled by David is 630 km

Answer:

1280 J

Explanation:

see pic

When plates commute in the exact direction it collides, and the plates move to other at convergent boundaries.

The lighter, dense, and much more elastic oceanic plate dips underneath the thicker, more stiff continental plate whenever a continental plate encounters a marine plate.

It's known as subduction. Deep ocean trenches, like the one that runs down South America's west coast, are created by subduction.

The continent's undercut rocks start to melt. On occasions, a chain of eruptions forms as the hot magma rises to the surface and travels through the continent.

Nearly 80% of earthquakes happen along convergent borders when plates are being pushed together.

Destruction, when two continental plates crashes, is just another kind of convergent boundary. The plates collapse and are propelled upward since neither is heavier compared to the other.

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The length of the rail will rise by 0.00825 meters, or 8.25 millimeters, on a hot day with a temperature of 30°C.

Temperature is a unit of measurement for how hot or cold an object or system is. The average kinetic energy of the particles in a substance or system is expressed by this physical quantity.

The following formula can be used to determine the lengthening of the rail:

ΔL = αLΔT

where L is the length that has been added, is the linear expansion factor, L is the initial length, and T is the temperature change.

Given:

L = 25 m (original length)

ΔT = 30°C - 0°C = 30°C (change in temperature)

α = 11 x 10^(-6) (°C)^(-1) (linear expansion coefficient)

In the formula, changing the values:

ΔL= (11 x 10(-6) (°C)(-1)) x (25 m) x (30°C).

ΔL = 0.00825 m

Consequently, the length of the rail will rise by 0.00825 meters, or 8.25 millimeters, on a hot day with a temperature of 30°C (rounded to two decimal places).

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Answer:

oi

Explanation:

The Poynting vector for the given electric and magnetic fields is S = 33.12^i - 57.84^j + 2.56^k (units: W/m²).To determine the Poynting vector, we can use the formula:

S = E x B

where S is the Poynting vector, E is the electric field vector, and B is the magnetic field vector.

Given:

E→ = (80.0^i + 32.0^j - 64.0^k) N/C

B→ = (0.200^i + 0.0800^j + 0.290^k) µT

Let's convert the magnetic field from µT to T by multiplying it by 10^-6.

B→ = (0.200^i + 0.0800^j + 0.290^k) T

Now we can calculate the cross product of E→ and B→ to find the Poynting vector:

S = E x B

Expanding the cross product, we get:

S = (E_y * B_z - E_z * B_y) i + (E_z * B_x - E_x * B_z) j + (E_x * B_y - E_y * B_x) k

Plugging in the given values, we have:

S = (32.0 * 0.290 - (-64.0) * 0.0800) i + ((-64.0) * 0.200 - 80.0 * 0.290) j + (80.0 * 0.0800 - 32.0 * 0.200) k

Simplifying the calculations, we find:

S = 33.12 i + (-57.84) j + 2.56 k

Therefore, the Poynting vector for the given electric and magnetic fields is S = 33.12^i - 57.84^j + 2.56^k (units: W/m²).

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Answer:

B. they must be intrinsically far more luminous than the brightest galaxies.

Explanation:

Quasar is famous for being an intergalactic object which is billions of years away from the earth yet can still be seen, unlike the other star body, unlike giant galaxies.

Hence, the fact that quasars can be detected from distances where even the biggest and most luminous galaxies cannot be seen means that "they must be intrinsically far more luminous than the brightest galaxies."

This condition, including other related evidence gotten in recent years concerning our galaxy, has shown that quasars are probably the central nuclei of very distant, very active galaxies.