the energy gap is about 8 kilocalories per pound of lost weight. bill has just lost 25 pounds, so he needs __________ fewer kilocalories per day to maintain his weight loss.

The final image is formed by two converging lenses at 15.3 cm in front of the second lens and the magnification of the system is -0.99.

To find the location of the final image, we can use the lens formula:

1/f = 1/do + 1/di

where f is the focal length of the lens, do is the object distance, and di are the image distance.

For the first lens, f = 14.8 cm and do = 30.0 cm. Plugging these values into the lens formula gives:

1/14.8 = 1/30 + 1/di

Solving for di, we get:

di = 20.1 cm

This means that the first lens forms an image 20.1 cm behind it, which serves as the object for the second lens.

Using the lens formula again for the second lens, f = 14.8 cm and do = 39.7 - 20.1 = 19.6 cm. Plugging these values into the lens formula gives:

1/14.8 = 1/19.6 + 1/di

Solving for di, we get:

di = 9.1 cm

Therefore, the final image is formed 9.1 cm behind the second lens.

To find the magnification of the system, we can use the formula:

m = - di/do

where m is the magnification, di is the image distance, and do is the object distance.

Plugging in the values we found, we get:

m = -9.1/30.0 = -0.303

Therefore, the magnification of the system is -0.303, which indicates that the image is inverted and smaller than the object.

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The Planet on its axis often contributes to the deflection created by the Coriolis force.

Moving objects in a reference point that rotates relative to an inertial frame are affected by an imagined or inertial force known as the Coriolis force. the force acting left of a object . an object in a frame of reference rotating in a clockwise direction.

Rotation: Rotation, often known as spin, is the cyclical motion of an object about a fundamental axis.

A two-dimensional rotating object can only have one possible central axis.

Such things have an axis that may rotate either counterclockwise or clockwise.

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Answer:

amounts

Explanation:

every surface has different amounts of friction

hope this helps :) plz brainliest?

Answer:

Amounts of frictions

Explanation:

take for example a football player it is harder to push a  sled

Explanation:

The ratio of time of flight for inelastic collision to elastic collision is 1:2

The given parameters;

Considering inelastic collision, the final velocity of the system is calculated as;

\(m_1u_1 + m_2u_2 = v(m_1 + m_2)\\\\m_1u_1 + 0 = v(m_1 + m_2)\\\\v= \frac{m_1u_1}{m_1 + m_2} \ -- (1)\\\\\)

The time of motion of the system form top of the table is calculated as;

\(v = u + gt\\\\v = 0 + gt\\\\v = gt\\\\t= \frac{v}{g} \\\\t_A = \frac{m_1u_1}{g(m_1 + m_2)} \ \ ---(2)\)

Considering elastic collision, the final velocity of the system is calculated as;

\(m_1u_1 + m_2 u_2 = m_1v_1 + m_2v_2\\\\m_1u_1 + 0 = m_1v_1 + m_2v_2\\\\m_1 u_1 = m_1v_1 + m_2v_2\)

Apply one-directional velocity

\(u_1 + (-v_1) = u_2 + v_2\\\\u_1 -v_1 = 0 + v_2\\\\v_1 = v_2 -u_1\)

Substitute the value of \(v_1\) into the above equation;

\(m_1u_1 = m_1(v_2 - u_1) + m_2 v_2\\\\m_1u_1 = m_1v_2 -m_1u_1 + m_2v_2\\\\2m_1u_1 = m_1v_2 + m_2v_2\\\\2m_1u_1= v_2(m_1 + m_2)\\\\v_2 = \frac{2m_1u_1}{m_1+ m_2} \ --(3)\)

where;

\(v_2\) is the final velocity of the block after collision

Since the bullet bounces off, we assume that only the block fell to the ground from the table.

The time of motion of the block is calculated as follows;

\(v_2 = v_0 + gt\\\\v_2 = 0 + gt\\\\t = \frac{v_2}{g} \\\\t_B = \frac{v_2}{g} \\\\ t_B = \frac{2m_1u_1}{g(m_1 + m_2)} \ \ ---(4)\)

The ratio of time of flight for inelastic collision to elastic collision is calculated as follows;

\(\frac{t_A}{t_B} = \frac{m_1u_1}{g(m_1 + m_2)} \times \frac{g(m_1 + m_2)}{2m_1u_1} \\\\\frac{t_A}{t_B} = \frac{1}{2} \\\\t_A:t_B = 1: 2\)

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If a person pushed on the door to the left of the handle, they would need to use less force than if they used the handle.

The reason for this is that the handle provides a mechanical advantage over pushing directly on the door. When the handle is used, the force applied to it is multiplied by the mechanical advantage, which is the ratio of the distance through which the handle moves to the distance through which the door moves.

For example, if the handle moves the door a distance of 2 cm and the door moves a distance of 5 cm when pushed directly on it, the mechanical advantage is 2:5, or 0.4. This means that for every 0.4 units of force applied to the handle, the door moves 1 unit.

On the other hand, if the person pushed directly on the door, the force applied to it would be the same as the force applied to the door, without any mechanical advantage. In this case, the door would move 5 cm, not 2 cm, for every unit of force applied to it.

Therefore, the person would need to use more force if they pushed directly on the door than if they used the handle, because they would have to apply the same amount of force over a greater distance to move the door the same distance.  

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The amount of voltage produced by an individual cell is determined by the

materials from which it is made.

Voltage is regarded as a form of pressure or push which ensures charges

are moved from one point to another.

The voltage produced is dependent on the materials of the cell from

which it is made.This is as a result of the cell components being a sole

determinant on how a cell functions.

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Answer:

Exposing it to a very strong magnetic field

Explanation:

Aluminium is a non magnetic metal thus it is not magnetic under normal conditions. This is because it interacts with other magnets. The only condition that magnetism can be induced in aluminium is exposing it to a very strong magnetic field.

Answer:

  1/8

Explanation:

17,100 years is 3 times the half-life of 5,700 years. After each half-life, half remains, so the amount remaining after 3 half-lives is ...

  (1/2)(1/2)(1/2) = 1/8

1/8 of the sample remains after 17,100 years.

Answer:

1/8

Explanation:

The conditions required to form He-4 during the fusion reaction in the Sun include high temperature, high pressure, and the presence of hydrogen atoms. Nuclear fusion is the process by which stars produce their energy by combining atomic nuclei.

The primary fuel of the Sun is hydrogen gas, and through a process known as nuclear fusion, the hydrogen atoms combine to form helium, which releases energy. In the first step, two hydrogen atoms combine to form a deuterium atom, releasing a positron and a neutrino. The deuterium atom then combines with another hydrogen atom to form helium-3, releasing a gamma ray.

Finally, two helium-3 atoms combine to form a helium-4 atom and two additional hydrogen atoms. This process releases a great deal of energy and is the source of the Sun's power. The conditions required for these fusion reactions to occur include temperatures in the range of 10-15 million degrees Celsius, high pressure, and confinement of the plasma within the Sun's core.

The high temperatures and pressures are necessary to overcome the electrostatic repulsion between the positively charged atomic nuclei and enable the strong nuclear force to bind them together.

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The maximum height achieved by the body is 2.645 meters.

The maximum height achieved by the body when thrown upwards with velocity {v} is -

h{max} = v²/2g

Given is to find the maximum height achieved by the body.

The maximum height achieved by the body is -

h{max} = v²/2g

h{max} = (2.3)²/20

h{max} = (2.3)²/20

h{max} = 2.645 meters

Therefore, the maximum height achieved by the body is 2.645 meters.

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{A diver jumps off the 2.8 m springboard with an initial velocity of 3.2 m/s.

to. Determine the maximum height.}

Answer:

1389.1

For Acellus

Explanation:

The electric field equals the force exerted by the unit positive charge. The electric field at point P is 3.615×10⁶  N/C. Its unit is N/C.

When a charged particle is got influenced by another charged particle when bring near to it, a field is created by an electric charge. This field is called the electric field.

The electric field is obtained by taking the ratio between Force and unit positive charge. Force in a charge is because of attraction and repulsion. The SI unit of force is Newton (N).

The unit positive charge is the test charge used to analyze the other charges present in the field. The SI unit of charge is Coloumb (C). The charge is responsible for the creation of an electric field.

From the givens,

The charge  q₁ = q₂ = 5×10⁻⁸ C,

The distance of charges from point P, r₁ = 0.424 m; r₂ = 0.636 m.

The net electric field E = E₁ + E₂

Electric field E = F / q

 E₁ = kq₁ / r₁²          (k = 9×10⁹ Nm²/C²)

     =  9×10⁹× 5×10⁻⁸ / (0.424)²

  E₁   = 2.503×10³ N/C.

E₂ = kq₂ / r₂²

    = 9×10⁹× 5×10⁻⁸ / (0.636)²

E₂ = 1.112×10³ N/C

E = E₁ + E₂

  =2.503×10³ + 1.112×10³

  = 3.615×10³ N/C

Hence, the net electric field is 3.615×10³ N/C.

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After descending 0.550 m, the rotating hoop moves at a angular speed  of 2.3 m/s for a Part A. A little hoop with a radius of 0.0800 m and a mass of 0.190 kg has its rim wrapped in a string multiple times.

As we can see, angular speed is the rate at which an object changes its angles over time, as measured in radians. For angular speed, there is simply a magnitude (a value). It's vital to remember that angular velocity and angular speed both employ the same formula.

In classical geometry, a circle's or sphere's radius (PL: radii) is any line segment that connects the object's Centre to its perimeter; in more contemporary usage, it is also the length of those line segments. Is called as radius.

MR^2 W^2 = Mgy1

W = (Gy1)^1/2/R

W =( (9.80)(0.550))^1/2/0.0800M =29.02 rad/sec

v = Rw = (0.0800*29.01) = 2.3m/s

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Force, Friction (static and kinetic), (balanced and unbalanced).

Materials - Tape, spring scales, measuring tape, string, wooden blocks, wooden blocks with sandpaper on the bottom, and different surfaces.

Procedure - 1. To test and gather information on surface friction, each group will look at four distinct surfaces (a concrete floor, a lab desk, a lab floor, and a carpet).

2. Each item should have a string firmly tied around it (a plain block of wood and the wood with sandpaper). Connect the string's looped end to the spring scale.

3. The 50 cm measuring line should be fastened to your surface. Your beginning point will be in the front, and your finishing point will be at the back.

4. Pull the unadorned wood block across the designated surface at a SLOW, STEADY SPEED for 50 cm. Note the amount of force (in N) necessary to pull the object.

5. Pull the wood block with the sandpaper on it across the designated surface at a SLOW, STEADY SPEED for 50 cm. Note the amount of force (in N) necessary to pull the object.

6. Step 5 must be repeated twice more. Put your findings in a table and on the class data spreadsheet.

REPEAT STEPS 1-6 FOR EACH SURFACE!

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The car's speed at the top is 0.6 m/s^2

The diameter of loop d = 40 mm

The radius of loop r = 20 mm = 0.02 m

At the top position, we can write,

Weight and Normal reaction combination will provide the centripetal force i.e.

R + W = mv²/R

R = W [apparent weight = Actual weight]

2W = 2mg = mv2/r

v = √2gr

v = 2 x 10 x 0.02 = 0.6 m/s^2

Hence, the car's speed at the top is 0.6 m/s^2

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The option that would NOT suggest an interaction effect is the "Two parallel lines." interaction effect. The correct answer is option(a).

When one independent variable's effect on the dependent variable varies according to the value of another independent variable, this is known as the interaction effect. In other words, the level of the other independent variable determines the impact of one independent variable on the dependent variable. For example, in a study on the effect of a new medication on blood pressure, the interaction effect would occur if the impact of the medication varies depending on the age of the patients.

Age would be the moderating variable in this example. According to the given options, two parallel lines would represent that the two independent variables being analyzed have no effect on the dependent variable, meaning that there is no interaction effect present. Therefore, option A would NOT suggest an interaction effect. The remaining options suggest an interaction effect as they indicate that there is an impact on the dependent variable based on the level of the independent variables.

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A single layer of sedimentary rock is known as a bed or stratum (plural: strata). Each bed contains rock of a single composition and texture and can clearly be distinguished from the beds or strata above and below. This layering of strata is unique to sedimentary rocks and occurs because of the way that sediments are deposited.

Answer:

periscope, an optical instrument used in land and sea warfare, submarine navigation, and elsewhere to enable an observer to see his surroundings while remaining under cover, behind armor, or submerged.

Explanation:

Given:

• Height = 40 m

• Mass of ball 1 = 5 kg

• Mass of ball 2 = 10 kg

• Mass of ball 3 = 15 kg

Given that the three balls have equal volumes and are dropped from rest, let's answer the following questions:

• (a). Describe and explain the order in which the balls impact the ground at a time t.

To

The randomized variables are:

B = 5.5 x 10⁻³ T

N = 1100 turns

d = 0.15 m

Magnetic field produced by the solenoid, B = 5.5 x 10⁻³ T

Number of turns uniformly distributed over the length of the solenoid, N = 1100

Length of the solenoid, d = 0.15 m

We can use the formula for the magnetic field produced by a solenoid:

B = μ0 x N x I / L

where:

μ0 is the magnetic constant, with a value of 4π x 10⁻⁷ T·m/A

I is the current flowing through the solenoid

L is the length of the solenoid

We can rearrange this formula to solve for the current flowing through the solenoid:

I = B x L / (μ0 x N)

Substituting the given values, we get:

I = (5.5 x 10⁻³ T) x (0.15 m) / (4π x 10⁻⁷  T·m/A x 1100)

Solving this expression, we get:

I = 0.119 A (rounded to three significant figures)

Therefore, the randomized variables are:

B = 5.5 x 10⁻³ T

N = 1100 turns

d = 0.15 m

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Answer:

5,760

Explanation:

1 minute is equal to 60 seconds. so you will multiply 60 times 96. and that equals 5,760

300 meters because 5x600=3000 and 3000÷10=300 please someone check me for this answer

Yes, force can be expressed in units of pounds and newtons.

Force is an effect of the mass of object to accelerate in particular direction and can be expressed in the unit of pounds according to the FPS system of units. Newton is also a unit to express the force. SI unit of force is the newton and symbol is N.

Convert weight measured in pounds to equivalent in Newtons. In the formula for the determination of mass based on weight, mass is measured in Newtons. Weight is measured in Kilograms, and acceleration of gravity on Earth is measured as 9.8 meters per second squared and these are metric system unit measurements.

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Answer:

Explanation:

In the shells of the atom, we find the electrons while in the nucleus of the atom, we find the protons.

We define the electron as the smallest part of a substance that is able to take part in a chemical reaction. Thus the atoms of elements are quite different from each other but there are some of the feature of the atom that is general to all the atoms.

The atoms are made up of the sub atomic particles such as the electrons, the protons and the neutrons. Now we know that the protons and the protons can be found in the nucleus of the atom while the electrons are in the shells.

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The friend's small push will increase the child's maximum speed by a factor of 1.41.

When the friend gives her a small push, the friend adds energy to the system. This additional energy causes the child to swing to a higher maximum angle of 100 degrees. Using conservation of energy, we can equate the potential energy at the top of the swing before and after the push:

mgh = 2mgh'

where m is the mass of the child, g is the acceleration due to gravity, h is the maximum height of the swing before the push, and h' is the maximum height of the swing after the push.

Simplifying this equation,

h' = 2h

This means that the maximum height of the swing doubles after the push.

Since the maximum speed of the swing is proportional to the square root of the maximum height, the maximum speed of the swing will increase by a factor of sqrt(2) or approximately 1.41.

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The tension in string B is greater than that of the tension in string A if the balls travel over the top of the circle.

Two balls of equal mass m in string A and B.

The radius of circular motion of two balls are r and 2r.

Newton’s second law is given by, Σ F = T = mv²/r

The formula for angular velocity is v = r ω.

case (i) The tension at mass with angular velocity and radius of circular motion gives

T a = mv²/r = m r² ω²/r = m r ω²

case (ii) The tension at mass with angular velocity and radius of circular motion gives

T b = mv²/2r = (m 4 r² ω²)/2r = 2 m r ω²

Thus, the tensions of each string for different cases are ranked in the order

T b > T a.

The question in incomplete. The complete question is ' Figure shows two balls of equal mass moving in vertical circles.'

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If you were suddenly transported to a planet with the same radius but twice the mass as earth, the force of gravity acting on you would change. This is because the force of gravity depends on the mass of the object you are near and the distance between you.

This force is a result of the mass of an object and its distance from another object with mass. The closer two objects are to each other, the stronger the force of gravity between them. On this new planet, you would still be the same distance from its centre, so the radius would not affect the force of gravity. However, because the planet has twice the mass of Earth, the force of gravity would be stronger.

To be more precise, the force of gravity is proportional to the product of the masses of the two objects and inversely proportional to the square of the distance between them. This means that if the mass of one object doubles, the force of gravity between them will increase by a factor of four. In this case, because the planet has twice the mass of Earth, the force of gravity acting on you would be four times stronger than it is on Earth.

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