the force of attraction between any two objects that have mass is

Answer:

(a) 159.84 m

(b) 1.89 m/s²

Explanation:

Applying,

(a)

s = (v+u)t/2.................. Equation 1

Where s = distance traveled by the car, u = initial velocity, v = final velocity, t = time.

From the question,

Given: u = 0 m/s ( from rest), v = 55 mi/h = (55/2.237) m/s = 24.59 m/s, t = 13 s

Substitute these values into equation 1

s = (24.59+0)13/2

s = 159.84 m

(b)

Also applying,

a = (v+u)/t................. Equation 2

Where a = acceleration of the car.

substituting into equation 2,

a = (24.59+0)/13

a = 1.89 m/s²

Answer:

The sun.

Explanation:

The sun has the most gravitational pull.

Answer:

frequency

Explanation:

When a wave enters a different medium, the property that remains unchanged is the frequency of the wave.

The frequency of a wave is defined as the number of wave cycles passing a given point per unit time. It represents the rate at which the wave oscillates or repeats its pattern.

The frequency of a wave remains constant when it enters a different medium, regardless of any changes in other properties such as amplitude, wavelength, or velocity.

Therefore, When a wave enters a different medium, the property that remains unchanged is the frequency of the wave.

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The given statement is true.

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Explanation:

Explanation:

If an object having initial velocity

uExplanation:

If an object having initial velocity

u

is applied an acceleration of

a

for

t

time, its final velocity

v

is given by

v

=

u

+

a

t

and distance covered

S

is given by

S

=

u

t

+

1

2

a

t

2

.

We have

u

=

o

(as the object starts from rest),

t

=

5

sec., and acceleration

a

=

−

1.5

m

sec

2

.

Hence final velocity

v

=

−

1.5

×

5

=

−

7.5

m

sec

.

Distance covered

S

=

1

2

×

(

−

1.5

)

×

5

2

=

−

18.75

m

.

Minus sign indicates that acceleration is in reverse direction.

is applied an acceleration of

a

for

t

time, its final velocity

v

is given by

v

=

u

+

a

t

and distance covered

S

is given by

S

=

u

t

+

1

2

a

t

2

.

We have

u

=

o

(as the object starts from rest),

t

=

5

sec., and acceleration

a

=

−

1.5

m

sec

2

.

Hence final velocity

v

=

−

1.5

×

5

=

−

7.5

m

sec

.

Distance covered

S

=

1

2

×

(

−

1.5

)

×

If an object having initial velocity

u

is applied an acceleration of

a

for

t

time, its final velocity

v

is given by

v

=

u

+

a

t

and distance covered

S

is given by

S

=

u

t

+

1

2

a

t

2

.

We have

u

=

o

(as the object starts from rest),

t

=

5

sec., and acceleration

a

=

−

1.5

m

sec

2

.

Hence final velocity

v

=

−

1.5

×

5

=

−

7.5

m

sec

.

Distance covered

S

=

1

2

×

(

−

1.5

)

×

5

2

=

−

18.75

m

.

Minus sign indicates that acceleration is in reverse direction

5

2

=

−

18.75

m

.

Minus sign indicates that acceleration is in reverse direction.

Answer:

67500 J

Explanation:

Q = mcΔt.................... Equation 1

Where Q = Amount of heat, m = mass of aluminum, c = specific heat capacity of aluminium, Δt = change or increase in temperature.

From the question,

Given: m = 1 kg, Δt = 75 °C

Constant: c = 900 J/kg.K

Substitute these values into equation 1

Q = 1×900×75

Q = 67500 J

Hence the heat energy required is 67500 J

The distance between two objects of radius 6 cm and 2 cm is zero

To find the distance between two objects with radii of 6 cm and 2 cm, we need to consider the center-to-center distance between the objects and subtract the sum of their radii.

Let's denote the radii of the objects as r1 = 6 cm and r2 = 2 cm.

The distance between the centers of the objects can be represented as d = r1 + r2. Adding the radii ensures that we account for the space occupied by both objects.

Substituting the values, we have d = 6 cm + 2 cm = 8 cm.

Now, to find the actual distance between the objects, we subtract the sum of their radii from the center-to-center distance:

Distance = d - (r1 + r2) = 8 cm - (6 cm + 2 cm) = 8 cm - 8 cm = 0 cm.

The resulting distance is 0 cm, indicating that the objects are in direct contact with each other. This means that their surfaces are touching. When the distance between two objects is zero, it implies that they are overlapping or in physical contact. In this case, since the distance is equal to 0 cm, the two objects are touching each other, with their surfaces coming into contact.

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The speed at aphelion is mathematically given as

v2 = 21.43 km/s

Question Parameter(s):

At perihelion a planet in another solar system is 175 x 106 km from its sun at traveling at 40 km/s.

At aphelion it is 250 x 106 km distant.

Generally, the equation for the angular momentum conservation is mathematically given as

I1*w1 = I2*w2

Therefore

(0.5*m*R1^2)*v1/R1 = (0.5*m*R2^2)*v2/R2

Where

v1*R1 = v2*R2

v2 = v1*(R1/R2) = (30*10^3)*(2.50*10^11)/(3.50*10^11)

v2 = 2.1428*10^4 m/s

v2 = 21.43 km/s

In conclusion, speed is

v2 = 21.43 km/s

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The largest area that the window could be is when it has the maximum height and width, so

Between the interior jambs on the left and right, measure the distance horizontally with a tape measure. Shut the window and take a similar measurement in the centre of the window from jamb to jamb.

At the top of the window, measure the space between the jambs. Take the shortest reading.

Area = height x width \(= 160 cm x 82 cm = 13,120 cm²\)

Additional heights of \(18, 52, 54,\)And \(62\) Inches can be added to the standard height range of 2 feet to 8 feet.

Rough openings are given in whole numbers, and the actual window size is calculated by subtracting 1/2 inch from each rough opening size.

Area = height x width \(= 150 cm x 70 cm = 10,500 cm²\)

Therefore, The smallest area that the window could be is when it has the minimum height and width, so:

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The force needed to accelerate a mass of 40 kg from velocity v₁ = (4î - 5) + 3k)m/s to v = (8î + 3) - 5k)m/s in 10 seconds is 12.4 N.

Start by calculating the change in velocity (Δv) experienced by the object. This can be done by subtracting the initial velocity v₁ from the final velocity v.

Δv = v - v₁ = ((8î + 3) - 5k) - ((4î - 5) + 3k)

= 8î + 3 - 5k - 4î + 5 - 3k

= 4î - 8k + 8

Next, calculate the acceleration (a) using the formula:

a = Δv / t

where t is the time interval, given as 10 seconds.

a = (4î - 8k + 8) / 10

= (0.4î - 0.8k + 0.8) m/s²

The force (F) required to accelerate the object can be found using Newton's second law:

F = m * a

where m is the mass, given as 40 kg.

F = (40 kg) * (0.4î - 0.8k + 0.8) m/s²

= (16î - 32k + 32) N

Simplify the expression to obtain the final answer:

F = 16î - 32k + 32 N

≈ 12.4 N

Therefore, the force needed to accelerate a mass of 40 kg from velocity v₁ = (4î - 5) + 3k)m/s to v = (8î + 3) - 5k)m/s in 10 seconds is approximately 12.4 N.

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Answer:

1.4 * 10 ^-1 Ω

Explanation:

Hi,

For this question, we gotta use the formula

R = pL/A

p = The resistivity of your material at 20°C

L = length of the wire

A = cross-sectional area

The resistivity of tungsten is 5.60 * 10^-8 at 20°C

By plugging the values, we get:

R = (5.60 * 10^-8)(2.0)/(7.9*10^-7) = 1.4 * 10 ^-1 Ω

Answer:

The last column of the table gives this relationship:

w/m = g

Rewrite the equation to solve for W: W = m × g.

For one washer, the table shows a mass of 0.6 kilograms, a force of 5.9 newtons, and an acceleration due to gravity of 9.8 N/kg. The equation works correctly for these values and for the other values in the table:

W = m × g = 0.6 kg × 9.8 N/kg    5.9 N.

Explanation:

This is the answer on Edmentum. :)

The perpendicular force that a surface applies to an item is known as the normal force. FN = m ⋅ g

The perpendicular force that a surface applies to an item is known as the normal force. For instance, if you place a book on a table, a gravitational force will cause it to fall. The table pulls on the book in order to counterbalance this force and keep it from dropping. The normal force, often known as the opposing force, is denoted by the symbols FN F N or  NN. "N" stands for the normal force unit (Newton).

A common illustration of Newton's third rule of motion is the normal force.

When one object applies force to another, the other applies a force in the opposite direction and of equal magnitude to the first object (action equals reaction).

Therefore, the force applied by the item to the surface is equal to the normal force. The calculations change according to the surface's slope.

The formula is as follows for an object laying on a flat surface:

FN = m ⋅ g

where

The mass of an object is m.

Gravitational acceleration is denoted by g.

The normal force (FN F N ) for an item on a flat surface is equal to its gravitational force, according to Newton's third law ( WW).

The formula is as follows for an object laying on a flat surface:

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Answer:

When she stops at a fast pace the energy and wind will take the cup forward and it will most likeley brake

Explanation:

I'm not entirely sure this is what you were looking for but I hope this helped!

PLEASE MARK ME AS BRAINLIEST

Answer:

Hazards during late childhood

Elements combine to form compounds. The correct answer is A.

Elements combine with each other in chemical reactions to form compounds. A compound is a substance composed of two or more different elements chemically combined in a fixed ratio by mass. For example, water is a compound composed of hydrogen and oxygen in a fixed ratio of 2:1 by mass.

B. Molecules are formed when two or more atoms combine chemically, but these atoms can be of the same element or different elements. For example, oxygen gas (O2) is a molecule composed of two oxygen atoms.

C. Atoms are the smallest unit of matter that retains the properties of an element. Atoms do not combine to form other atoms or compounds.

D. Mixtures are composed of two or more substances physically mixed together, but the substances retain their individual properties and can be separated by physical means. Mixtures are not formed by the chemical combination of elements. Examples of mixtures include air and saltwater.

Therefore, The correct answer is option A.

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The magnitude of the electric field along the positive z axis is kqz/√(z^2+a^2)^3/2 , the angular frequency of these oscillations is √(kqq0/ma^3)

1. Given that a uniformly charged ring in the xy plane, centered at the origin.

Radius of the ring(r) = a

positive charge distributed evenly along its circumference = q

k= 1/4piepsion

The electric field can be described as, E = kq/r^2

The force exerted on an electric charge by a charge is F = q0E

Any vector can be projected along the z = A(z)=Acosθ

We know that ∑F =ma

Acceleration along z axis = a =d^2z/dt^2

The equation of motion for a simple harmonic oscillation along z is d^2z/dt^2 = -ω^2z

Here,  ω is the cosine function in a right-angled triangle is cosθ = z/√(z^2+a^2)

dE(z)=dEcosθ we know that E = kq/z^2+a^2

To calculate the magnitude of the electric field caused by complete rings, integrate dE(z)=dEcosθ

E(z) = Ecosθ = kq/(z^2+a^2) x  z/√(z^2+a^2)

E(z) = kqz/(z^2+a^2)^3/2

2. We know that F= q0E = kqq0z/(z^2+a^2)^3/2

Given The ball will oscillate along the z axis between z=d and z=-d in simple harmonic motion. Let z =d

F = kqq0d/(d^2+a^2)^3/2 = kqq0d/a^3

Force at any point along z = - kqq0z/a^3

We know F = ma =  

- kqq0z/a^3 = md^2z/dt^2

d^2z/dt^2= - kqq0z/ma^3

This equation of motion can be compared with the equation of motion for simple harmonic motions to find the angular frequency.

ω =√(kqq0/ma^3)

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Energy is that which has the ability to cause change in matter.

Energy is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed.

So in simple definition we can say that energy is that which has the ability to cause change in matter.

Based on the given statements we can classify them as;

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Ender's initial velocity was approximately 61.43 m/s, and Shen's initial velocity was approximately -100 m/s

To solve this problem, we can use the principle of conservation of momentum, which states that the total momentum of a closed system remains constant if no external forces act on it. We can write the equation as follows:

m1v1 + m2v2 = (m1 + m2)vf

where m1 and m2 are the masses of Ender and Shen, respectively, v1 and v2 are their initial velocities, vf is their final velocity after the collision, and we assume that the collision is perfectly elastic, which means that no kinetic energy is lost.

Substituting the given values, we get:

(70 kg)(v1) + (60 kg)(-v2) = (70 kg + 60 kg)(5 m/s)

Simplifying and solving for v1, we get:

v1 = [(70 kg + 60 kg)(5 m/s) + (60 kg)(-v2)] / 70 kg

v1 = (650 m/s + 60 kg v2) / 70 kg

Since we don't know the initial velocity of Shen, we cannot solve for v2 directly. However, we can use the fact that the two hold onto each other after the collision, which means that they move with the same final velocity vf. Thus:

vf = (m1v1 + m2v2) / (m1 + m2)

5 m/s = (70 kg v1 + 60 kg v2) / (70 kg + 60 kg)

Substituting the expression we obtained for v1 in terms of v2, we get:

5 m/s = [70 kg ((650 m/s + 60 kg v2) / 70 kg) + 60 kg v2] / (70 kg + 60 kg)

Simplifying and solving for v2, we get:

v2 = -100 m/s

Substituting this value in the expression we obtained for v1, we get:

v1 = (650 m/s + 60 kg (-100 m/s)) / 70 kg

v1 = 4300 / 70 m/s

v1 = 61.43 m/s

Therefore, Ender's initial velocity was approximately 61.43 m/s, and Shen's initial velocity was approximately -100 m/s.

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There is more to the Earth than what we can see on the surface. In fact, if you were able to hold the Earth in your hand and slice it in half, you'd see that it has multiple layers. But of course, the interior of our world continues to hold some mysteries for us. Even as we intrepidly explore other worlds and deploy satellites into orbit, the inner recesses of our planet remains off limit from us.

However, advances in seismology have allowed us to learn a great deal about the Earth and the many layers that make it up. Each layer has its own properties, composition, and characteristics that affects many of the key processes of our planet. They are, in order from the exterior to the interior – the crust, the mantle, the outer core, and the inner core. Let's take a look at them and see what they have going on.

Like all terrestrial planets, the Earth's interior is differentiated. This means that its internal structure consists of layers, arranged like the skin of an onion. Peel back one, and you find another, distinguished from the last by its chemical and geological properties, as well as vast differences in temperature and pressure.

Explanation:

Answer:

this is impossible unless im doing my math wrong sorry

Explanation:

One of the conclusion about the history of sports that can be drawn from the movie "Champions" is that sports have a long and rich history that is intertwined with the history of human civilization.

From the ancient Olympic Games to the modern-day Olympics, sports have been a way for people to come together and compete in a spirit of sportsmanship and competition. Sports have also been a way for people to express themselves, to build community, and to achieve personal goals.

The movie "Champions" tells the story of a group of young men who come together to form a football team. The team is made up of boys from different backgrounds and with different abilities. However, they are all united by their love of football and their desire to win.

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Answer:

Objects with greater mass have a stronger force of gravity between them. Objects that are closer together have a stronger force of gravity between them.

Explanation:

Newton's law states that the strength of gravity between any two objects depends on two factors: the masses of the objects and the distance between them.

The direction of the magnetic and electric fields are equal and opposite directions. So the magnitude is in such a way they cancel out each other to give a net force of zero. So that the charged particle does not deflect.

Consider a region in which the magnetic field, electric field, and velocity of the charged particle are perpendicular to each other.  To move a charged particle undeflected, the net force on the charged particle must be zero.

qE=qVB

V= \(\frac{E}{B}\)

The direction of the magnetic and electric fields are equal and opposite directions. So the magnitude is in such a way they cancel out each other to give a net force of zero. So that the charged particle does not deflect.

An electric-powered area (occasionally E-subject) is the bodily field that surrounds electrically charged debris and exerts a force on all differently charged particles inside the discipline, both attracting or repelling them. It also refers to the bodily field of a machine of charged debris.

Electric assets are associated with each factor in the area when the fee is found in any shape. The value and direction of the electric discipline are expressed via the price of E, called electric powered field power or electric subject depth or clearly the electric discipline. An electric-powered area (every now and then E-discipline) is the bodily subject that surrounds electrically charged particles and exerts a force on all differently charged particles inside the discipline, either attracting or repelling them. It also refers to the bodily field of a system of charged particles.

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Complete Question:

Write the expression for the force f, acting on a charged particle of charge′q ′, moving with a velocity v  in the presence of both electric field  E and magnetic field B. Obtain the condition under which the particle moves undeflected through the fields.

The time elapsed between the first splash and the second splash is approximately 0.69 seconds.

To calculate this, we consider the motion of two rocks thrown simultaneously from a bridge. Heather throws a rock straight down with a speed of 14 m/s, while Jerry throws a rock straight up with the same speed.

We use the equation for displacement in uniformly accelerated motion: s = ut + (1/2)at^2.

For Heather's rock, which is thrown downwards, the initial velocity (u) is positive and the acceleration (a) due to gravity is negative (-9.8 m/s^2). The displacement (s) is the height of the bridge (46 m).

Solving the equation, we find two possible values for the time (t): t ≈ -4.91 s and t ≈ 1.91 s.

Since time cannot be negative in this context, we discard the negative value and consider t ≈ 1.91 s as the time it takes for Heather's rock to hit the water.

For Jerry's rock, thrown upwards, we use the same equation with the same initial velocity and acceleration. The displacement is also the height of the bridge, but negative.

Solving the equation, we find t ≈ -5.68 s and t ≈ 1.22 s. Again, we discard the negative value and consider t ≈ 1.22 s as the time it takes for Jerry's rock to reach its maximum height before falling back down.

To find the time difference between the first and second splash, we subtract t ≈ 1.91 s (Heather's rock) from t ≈ 1.22 s (Jerry's rock). This gives us a time difference of approximately 0.69 seconds.

Therefore, the time elapsed between the first splash and the second splash is approximately 0.69 seconds.

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Answer:

Prototype

Explanation:

It's correct on Edge

The first version of a product, which is built and tested during the third stage of technological design, is called a​ prototype

There are mainly five stages of the technological design

Identifying the issue that needs to be solved is the first step in every problem-solving process.

The second stage is to imagine; during this phase, a designer would generate several concepts and conduct research on potential creations. They must pick a handful of their greatest concepts and then narrow it down to the best.

The third stage plans the imaging stage's selected product. In this process, the product is designed and drawn in order to be made into a model or prototype while taking into account the limitations that must be overcome.

The fourth step entails assessing, testing, and revising the final product. By creating a model or prototype of their product, the designer may decide what they like and what they could modify. This is found through product testing. If changes are necessary, the designer will go through the process again until they are happy with the outcome.

The fifth step is to share your solution. You present your solution to get feedback, exchange ideas with others, and improve your product. After you've gone through the design process a few times, you might decide to reveal your response to a larger audience in later phases. Similar modifications are made to homework by World of Inquiry students before they deliver it during an excursion.

Thus,a prototype is the initial iteration of a product that is constructed and tested during the third stage of technological design.

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Answer:

21349/ 100

Explanation:

The energy of a wave is measured in terms of the wave's amplitude.

The energy of a wave depends on the amplitude and the frequency of of the wave.

The energy of a wave is directly proportional to the square of the wave's amplitude.

Mathematically, the formula for energy of a wave is given as;

E = ¹/₂μω²A²

where;

So based on the formula given above, energy of a wave is proportional to the square of wave's amplitude and square of angular frequency of the wave.

Thus, we can conclude that the energy of a wave is measured in terms of the wave's amplitude because the energy of the wave is function of maximum displacement of the wave (wave amplitude).

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Answer:

90J

Explanation:

The only time work is being done is when he lifts the box off the ground. Therefore, using the work formula, 2 x 45, you get 90J. Hope this helps someone.