help!!!!!!
Why are the accelerations due to gravitational force on the moon and the Earth different? Do you think you could shield a gravitational field in a vacuum?

The acceleration of the boat is 2.8 m/s².

Acceleration is the fee of trade of the rate of an object with admire to time. Accelerations are vector quantities. The orientation of an item's acceleration is given by means of the orientation of the internet pressure appearing on that object.

The acceleration is the rate of change of displacement. Acceleration is the price of an alternative to speed. velocity is a vector amount as it consists of each magnitude and path. Acceleration is also a vector amount as it's far just the rate of alternate speed. Newton s 2nd law of movement additionally referred to as the law of force and Acceleration, a pressure upon an item causes it to accelerate consistent with the method internet force = mass x acceleration.

So the acceleration of the object is at once proportional to the pressure and inversely proportional to the mass.

Calculation:-

v = u - at

8 = 22 - a×5

a = (22 - 8)/5

a = 2.8 m/s²

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The electric field between the disks is 8.43*10^6 N/C

What is electric field of charged spherical spheres ?
A simple application of Gauss' law will yield the electric field of a conducting sphere with charge Q. In the case of a sphere-shaped Gaussian surface with radius r > R, the electric field is directed outward and has the same strength at every point along the surface. Simply multiplying the electric field by the spherical surface's area yields the electric flux.

The electric field is observed to be the same as a point charge Q at the sphere's centre. A Gaussian surface at r R will encompass no charge because all the charge will be on the conducting surface, and by virtue of its symmetry, can be observed to be zero at all places inside the sphere

Diameter of the disks = 1.6cm

Radius of the disks = 1.6/2= 0.8cm= 0.008m

gap between 2 disks d = 1.2mm = 0.0012m

Charge Q = ±15nC

E =σ/ϵ = Q/Aϵ = 15*10^-9/(8.854*10^-12*3.14*(0.008^2))

                       =  8.43*10^6 N/C

here,

σ (sigma) is surface charge density (C/m^2) and

ϵ (epsilon) is permittivity of free space

The electric field between the disks is 8.43*10^6 N/C

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Variables typically consist of space, time, and occasionally parts of momentum. The bicycle eventually travels at 13.8 m/s.

According to Newtonian mechanics, an object's mass and velocity are combined to form its linear momentum, translational momentum, or just momentum. As a vector quantity with both a magnitude and a direction, it has both. When an object's mass (m) and velocity (v), another vector quantity, are known, the object's momentum (p) is also known.

An object's mass, velocity, and direction are related by the concept of momentum. Force is produced whenever momentum changes. As a result, the force pushing against the object is identified by a change in momentum.

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When a ray of light passes from the rarer medium to the denser medium, it bends towards the normal.

When the ray of sunlight moves from the air into the denser medium of a pound, the light ray will slow down as it passes rarer to denser medium. It bends towards the normal.

Thus, the correct option is (D).

Answer:

150 km/h

Explanation:

After the first two hours, you have traveled 150km (given) which means that you still have 300km - 150km = 150km left to travel. Since you have already traveled 2 hours, that means you must travel the remaining 150km in 3hours - 2hours = 1hour. Assuming the answer is in km/hour, you will need to travel at a speed of 150km/1h = 150km/h for the remaining of the distance.

In the diagram the numbered parts are:

1. Muscle belly

2. Fascicle

3. Epimysium

4. Myofibril

5. Muscle fiber

6. Endomysium

7. single muscle fiber

8. H zone

9. Z disc

10. Sarcolemma

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The ranking of the boy's location in the ferris wheel ridding motion above comparing his felt weight from the highest to the lowest is 1, 2 and 4 tie, 3.

The correct answer choice is option c.

The correct image is attached.

In motion above by the boy, the boy feels he weighs the greatest at location 3 among all the location simply because there is a force known as centripetal force which technically acts upward at that point which makes more weight be felt among all.

However, at the locations 2 and 4, the force actually was acting side ways, which would still not affect the weight from 3 in the circular movement. And at location, the weight felt feels the lowest among all.

In conclusion, the locations of the boy on a ferris wheel ridding from the greatest is highest to the lowest is 1, 2 and 4 tie, 3.

Complete question:

The diagram above represents a Ferris wheel-a circular ride that rotates in a vertical circle with seats where people sit. The numbers correspond to a seat in four difference places as the Ferris wheel rotates.

Imagine a boy sitting in this seat riding the ride with the Ferris wheel rotating in the direction shown (at constant speed). Rank the locations according to how much the boy would feel like he weighs,greatest first.

a. 1, 2, 3, 4

b. 1 and 3 tie, 2 and 4 tie.

c. 1, 2 and 4 tie, 3

d. 4, 3, 2, 1.

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Answer:

Halite

Explanation:

D. cannon

Newton imagined a cannon on top of a mountain. Without gravity, the cannonball should move in a straight line. If gravity is present, then its path will depend on its velocity.( A and B)

If there were no forces of gravitation or air resistance, the body should follow a straight line away from Earth, in the direction that it was projected (E), If a gravitational force acts on the projectile, it will follow a different path depending on its initial velocity.

so, we can conclude the answer is

D. cannon

I hope this helps you

The resultant vector is middle line which is the longest line representing the single effect of the two vectors at both ends.

A resultant vector is defined as a single vector that produces the same effect as the two or more vectors combined together.

A resultant vector is usually, drawn to join the head of the first vector to the tail of the second in a triangle method of vector addition.

Also, a resultant vector can be determined by applying parallelogram law of vector addition.

Mathematically, a resultant vector can be determined using this formula,

R² = a² + b² - 2ab cosθ

where;

A resultant vector is always bigger than the two vectors acting together.

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Answer:

What is the full question?

Answer:

It produces grooves and lands.

If a man lifts a a 20-kg bucket from a well and does 6 kJ of work, the well will be 30.6 m deep.

W = m g h

W = Work

m = Mass

g = Acceleration due to gravity

h = Height

m = 20 kg

g = 9.8 m / s²

W = 6 KJ

W = 6000 J

h = W / m g

h = 6000 / 20 * 9.8

h = 30.6 m

W = m g h is derived from W = F * d. According to Newton's second law of motion, F = m a. Since the object is moving vertically upwards, a = g. Therefore, F = m g and hence W = m g h

Therefore, the well is 30.6 m deep

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The value of the iguana’s northward displacement is 1 meter.

The velocity V of iguana is 10m/s.

The time for which iguana runs is 5 seconds.

The angle it is making with the north is 30°.

The velocity of iguana will have two components now,

One along east and one along north.

The component along east is Vcos(30°).

And the component along north is Vsin(30°).

The horizontal displacement of the iguana is,

Northward displacement = northward velocity × time.

The northward velocity is 10sin(30°).

Time is 5 seconds no matter where the iguana moves.

So,

Northwards displacement = 10sin(30°)/5

Northwards displacement = 10/10 = 1m

The displacement in north is 1 meter.

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The tension in the rope and  the smallest value the angle θ can have if the rope is not to break

This is further explained below.

Generally, the equation for the tension  is mathematically given as

[tex]2 T sin \theta = m g[/tex]

Therefore

2*T*sin(11.1) = 87.6 * 9.81

T=2232 N

the tension in the rope is T=2232 N

b)

Generally, the equation for the angle is mathematically given as

[tex]2*2.55E4*sin \theta = 87.6*9.81[/tex]

Therefore

[tex]\theta = arcsin( \frac{87.6*9.81}{(2*2.55E4))}[/tex]

[tex]\theta=0.966 \textdegree[/tex]

In conclusion, The smallest value the angle θ can have if the rope is not to break is

[tex]\theta=0.966 \textdegree[/tex]

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The time taken by the rocket to reach maximum height is 6.37 s. The velocity of the rocket at maximum height is 62.43 m/s. The initial velocity of the rocket is 0. The maximum height of the rocket is 198.8 m.

1 ) Total time taken = 12.74 s

Time taken to reach maximum height = Time taken to reach the ground from the maximum height

Time taken to reach maximum height = 12.74 / 2

Time taken to reach maximum height = 6.37 s

2 ) a = g = 9.8 m / s²

v = u + a t

v = 0 + ( 9.8 * 6.37 )

v = 62.43 m / s

3 ) The initial velocity of the rocket is zero

4 ) According to equations of motion,

s = u t + 1 / 2 a t²

s = 0 + ( 1 / 2 * 9.8 * 6.37² )

s = 198.8 m

Therefore,

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The magnitude of the horizontal component of the balls initial velocity if the angle between the horizontal and the direction of the 5.0 meters per second decreases from 30 degrees to 20 degrees is 4.7 m / s

cos θ = Adjacent side / Hypotenuse

θ = 20°

V = 5 m / s

Since the direction of ball makes a right angled triangle with the horizontal,

cos θ = [tex]V_{x}[/tex] / V

[tex]V_{x}[/tex] = cos 20° * 5

[tex]V_{x}[/tex] = 0.94 * 5

[tex]V_{x}[/tex] = 4.7 m / s

The formula used to solve is called as trigonometric ratios formulas. The basic formulae are:

sin θ = Perpendicular/Hypotenuse

cos θ = Base/Hypotenuse

tan θ = Perpendicular/Base

Therefore, the magnitude of the horizontal component of the balls initial velocity is 4.7 m / s

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The change in the speed of the object is constant with constant increment of 5 m/s.

The change in the speed of an object is the rate at which the distance covered by the object changes with time.

The change in the speed of the object at various time is calculated as follows;

at time, t = 0 second, change in speed (Δv) = 0

at time, t = 1 second, change in speed (Δv) = 5 m/s - 0 m/s = 5 m/s

at time, t = 2 seconds, change in speed (Δv) = 15 m/s - 5 m/s = 10 m/s

at time, t = 3 seconds, change in speed (Δv) = 30 m/s - 15 m/s = 15 m/s

at time, t = 4 seconds, change in speed (Δv) = 50 m/s - 30 m/s = 20 m/s

at time, t = 5 seconds, change in speed (Δv) = 75 m/s - 50 m/s = 25 m/s

Thus, we can conclude that, the data given in the table has time which increased gradually while the speed also increase gradually but with a constant increment.

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x and y directions are the component of projectile motion. x represents horizontal motion and y represents vertical motion.

There are the two components of the projectile motion - horizontal and vertical movement. And on the grounds that perpendicular components of movement are impartial of every other, these  components of movement can be mentioned separately.

Projectile motion is a form of movement skilled by an object or particle that is projected close to Earth's surface and moves alongside a curved route under the action of gravity most effective.

Projectile motion is the movement of an item thrown into the air. After the preliminary pressure that launches the item, it only experiences the pressure of gravity. The item is known as a projectile, and its route is known as its trajectory.

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B. The reactants have higher potential energy, and energy is absorbed is the statement that best describes the total energy change of the system.

The difference in the amounts of chemical energy that are stored in the products and reactants accounts for the energy change in a chemical reaction. Enthalpy refers to the system’s heat content or stored chemical energy.

Potential energy can be described as the energy which a body possess because of its position. The potential energy can also be said as stored energy. The energy diagram that shows the changes in energy is called as a chemical reaction.

Potential energy and the Reaction progress are shown in the problem and from this the reactants are seen as the substance which reacts and form one or more than one product.

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From the information given, the forces are

F1 = −78i + 44j

F2 = 87i + 80j

We would apply the dot product.

F1F2 = <- 78, 44> * <87i, 80j>

F1F2 = - 78(87) + 44(80) = - 6786 + 3520

F1F2 = - 3266

|F1| = √[(- 78)^2 + 44^2] = √8020

|F2| = √[87^2 + 80^2] = √13969

The angle between them is

θ = Cos^-1[F1F2/(|F1||F2|)

θ = Cos^-1(- 3266/√8020 * √13969

θ = Cos^-1(- 0.30856)

θ = 108 degrees

the angle between the cables is 108 degrees

Any mass greater than 150g attached to 100g will make the block move towards point A. Thus, there can be any number of blocks attached to it, but the total mass of the attached blocks must add up to 150g.

The newton, abbreviated N, is the SI unit of force. These are base units that are pertinent to force.

The symbol for the length unit of a meter is m. the kilogram (kg), a unit of mass. s stands for the second, a unit of time.

Seesaws are regulated by a straightforward equation that states that for balance to occur, the force applied to one end of the seesaw multiplied by the distance from the pivot should equal the force applied to the other side of the seesaw multiplied by the distance from the pivot.

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For a person who has not eaten for four days and then finally has a candy bar, your food drive will be reduced, but your food need will no.t

Food refers to any substance that is taken into the body and which contains nutrients that provide energy for the body and also provide the body with materials required for the growth and repair of body tissues.

There are seven classes of food that the body needs and they include:

Food drive refers to the urge to eat food and may be easily satiated.

Food need on the hand has to do with all the food that the body needs for healthy growth and is not easily met.

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According to the given statement the acceleration of the car is 3ms².

Depending on whether an object is moving much faster, slower, or in a different direction, its speed may change. Examples of acceleration include a falling apple, the moon orbiting the earth and a car which has stopped at a stop sign.

Uniform acceleration, non-uniform acceleration, and average acceleration are the three different forms of accelerated motions.

Let acceleration be 'a'

v = u + at

a = v - u/t

a = 45 - 0 /15

a = 45/15

a = 3 ms²

So, acceleration will be 3 m/s² .

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Answer:

Explanation:

Given:

V₀ = 43 m/s

H = 108 m

g = 9.8 m/c²

____________

L - ?

Vₓ - ?

Vy - ?

1)

Fall time:

H = g*t² / 2

t = √ ( 2*H / g) = √ (2*108 / 9.8) ≈ 4.7 s

L = V*t = 43*4.7 ≈ 200 m

2)

Vx = V₀ = 43 m/s

Vy = - g*t = - 9.8*4.7 ≈ - 46 m/s

Answer:

your answers is option d 75 ohms

The electrostatic force of repulsion between the two charges is equal to 0.25 x 10¹¹ N.

The coulomb's law is used to find the force between two point charges. The force can be calculated using the formula -

F = 1/4πε₀ |Q₁||Q₂|/r²

Given is two charged objects separated by a distance of 0.6 m such that one object has a charge of -5 C and the other has a charge of +2C.

The electrostatic force of repulsion between the two charges is given by-

F = 1/4πε₀ |Q₁||Q₂|/r²

F = 9 x 10⁹ x (5 x 2)/(0.6)²

F = 90 x  10⁹/0.36

F = 9 x 10¹¹/36

F = 0.25 x 10¹¹ N

Therefore, the electrostatic force of repulsion between the two charges is equal to 0.25 x 10¹¹ N.

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Mass does not affect the speed of falling objects, As there is only gravity acting on them.

The mass of Uranus exists: 8.681 × 10²⁵kg

The radius of Uranus exists: 15,759.2 miles

Acceleration due to gravity exists as the acceleration gained by an object due to gravitational force.

Its SI unit exists m/s2. It contains both magnitude and direction.

The planet would be a space probe with a mass of 250Kg

The distance is 25m.

Mass does not affect the speed of falling objects, As there is only gravity acting on them.

The mass of Uranus exists m = 8.681 × 10²⁵kg

The radius of Uranus exists: 15,759.2 miles

Therefore, the correct answer is option D. Uranus

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The angular acceleration a of the pulley and the linear acceleration a of the bucket are 12.85 rad/s² and 4.24 m/s² respectively.

The tension in the cord  is 6.49 N.

The angular acceleration of an object is the rate of change of angular velocity with time.

Apply the principle conservation angular momentum to determine the angular acceleration of the pulley.

τ = Iα

Fr = Iα

mgr = Iα

α = mgr/I

where;

α = (1.53 x 9.8 x 0.33) / (0.385)

α = 12.85 rad/s²

The linear acceleration of the pulley is calculated as follows;

a = αr

a = 12.85 rad/s²  x  0.33 m

a = 4.24 m/s²

The tension in the cord is calculated as follows;

T = ma

T = 1.53 kg x 4.24 m/s²

T = 6.49 N

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      The rate at which an object's velocity with respect to time changes is referred to as acceleration in mechanics. It is a vector quantity to accelerate (in that they have magnitude and direction). The direction of the net force applied on the item determines the object's acceleration.

        The definition of acceleration (symbol: a) in physics or physical science is the rate of change (or derivative with respect to time) of velocity.

       The equation a = v/t denotes acceleration (a), which is the change in velocity (v) over the change in time (t).

     The displacement that an object or particle experiences with respect to time is expressed vectorially as velocity. The meter per second (m/s) is the accepted unit of velocity magnitude (also known as speed).

         When an item is travelling at a constant speed, its acceleration can be zero. There won't be any acceleration because the speed is constant, hence there won't be any change in speed. Zero acceleration is shown by the graph above.

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