To find a virtual image in a planar mirror or due to reflection at a flat surface, one needs to use at least ___ rays. The image is located where the light rays ____.

Answer: Newton

Explanation:

Isaac Newton is viewed as one of history's most persuasive researchers. During his lifetime, Newton created the hypothesis of gravity, the laws of movement (which turned into the establishment of material science), another strategy for arithmetic known as analytics, and leap forwards in optics like the reflecting telescope.

Answer:

all living things are made of cells

Explanation:

cells are kinda like matter but only for living thing like when someone says you white blood cell count is low its because they are part of you living body.

Answer:

\(46.482 cm\)

Explanation:

\(Since 1 in = 2.54cm\\\\18.3 inches =(18.3 x 2.54) cm\\ =46.482cm\)

Answer:

Sarah's classmate is incorrect. The photo shows the slight effect of gravity on the hillside but it is not a process

associated with mass wasting.

Explanation:

PLEASE MARK ME AS A BRINLIEST

The maximum weight limit for light-duty ladders depends on the specific ladder and its manufacturer's specifications. However, as a general guideline, light-duty ladders usually have a maximum weight limit of around 200 pounds.

It's important to note that exceeding the maximum weight limit of a ladder can be dangerous and may result in accidents or injuries. When using a ladder, it's essential to read and follow the manufacturer's guidelines and weight limits to ensure safe and proper use.

If the user's weight or the weight of the materials being carried exceeds the ladder's maximum weight limit, a heavier-duty ladder should be used instead.

In summary, the maximum weight limit for light-duty ladders is typically around 200 pounds, but it's important to check the manufacturer's specifications for the specific ladder being used.

To know more about weight refer here

https://brainly.com/question/9873207#

#SPJ11

Answer:

Hi there!

There are many possible answers!

My best guesses are:

1) Knowing how they work will prevent injury! For example, knowing that the gears twist will stop you from putting your finger in it!

2) Allowing you to use it! Knowing how to line up the edge of the can with the tool will let you use it properly!

Hope this helps

The  correct  processes based on the type of energy transfer they involve can be linked as ;

Conduction, radiation, and convection are the three different ways that thermal energy is transferred. Only fluids experience the cyclical process of convection.

The total amount of energy in the universe has never changed and will never change because it cannot be created or destroyed.

Learn more about energy transfer at;

https://brainly.com/question/31337424

#SPJ1

Answer:

Explanation:

2.3 kg·m/s²

Answer:

1 hour = 3,600 seconds

1 km = 1,000 meters

75 km/hour = (75,000/3,600) m/s =  20-5/6 m/s

The average speed of the bus while it slows down is

                                   (1/2)(20-5/6 + 0) = 10-5/12 m/s .

Traveling at an average of 10-5/12 m/s for 21 seconds,

the bus covers

                         (10-5/12) x (21) =  218.75 meters .

do not own the answer

answer by (AL2006 from brainly)

Pressure is the rate change of time of momentum divided by area. The correct answer is c.

Pressure is a measure of how much force is applied per unit area. It is defined as the rate of change of momentum of a fluid per unit area. This means that if a fluid is pushed against a surface, the pressure at that point is equal to the force exerted on the surface divided by the area of the surface.

Newton's second law of motion states that the force acting on an object is equal to the mass of the object multiplied by its acceleration, which is not directly related to pressure. Pressure is a scalar quantity and has no direction, it is a measure of how much a force is pushing or pulling in all directions.

To learn more about Newton law of motion visit: https://brainly.com/question/28171613

#SPJ4

like blade runner and Fahrenheit 451 crossword clue, the answer is: DYSTOPIAN.

Crossword clues are hints that the problem solver must interpret in order to discover the solution, which is subsequently typed into the puzzle grid. Clues can include puns, anagrams, and other wordplay; they don't always contain dictionary definitions.

The benefit of doing a crossword puzzle is that it compels students to go through the clues, remember and review the subject matter, and engage in conversation with their peers to dispel any misunderstandings about the subject matter.

To know more about crossword clue refer to:

https://brainly.com/question/19127865

#SPJ4

A brick is dragged across a concrete floor. The type of friction that acts between the brick and the floor is Static friction.

Friction is a force that opposes the relative motion of two objects that are in contact. It is the resistive force that acts in the opposite direction of the relative motion between two objects. Friction is a non-conservative force, meaning that the total work done by friction is not conserved. Friction is caused by the roughness of the surfaces of the two objects in contact. The amount of friction between two objects depends on the materials of the two objects, the force with which they are pressed together, and the area of contact between them. Friction can be beneficial and can be used to slow down motion, or it can be detrimental and cause objects to become stuck together.

To learn more about friction

https://brainly.com/question/24338873

#SPJ4

Answer:

A) x4

Explanation:

Magnification is equal to image size divided by the actual size, or M = I/A.

The image size is the student's drawing, which is 28.8 cm, and the actual size is 7.2 cm. Divide them, and cancel out the units, and you should get:

28.8 cm/7.2 cm = 4

1,013.75 kg/m3 is what's found to be the mixture's density.

Per unit of length, area, or volume, there is a certain amount of something: as. : celebration of an object per unit volume.

A polystyrene cup can float in water whereas a ceramic cup will fall due to the difference in density between the two materials. Due to its lower density than water, wood typically floats on the surface of liquids. Generally speaking, rocks sink because they are denser than water.

To know more about density visit:

https://brainly.com/question/28897379

#SPJ1

Answer:

yhnjienfjknijeanfijawenkwamfjkamenkgtama4eikoatgjj

Explanation:

ga4tgaew4gtaegae4gaegae5tatgaeata54aetgaetg

a. the period of the oscillations is  0.285 seconds.

b. The maximum speed of the mass as it passes through the equilibrium position is 19.26 m/s.

T = 2π√(m/k)

where T=  period

m= mass

k= spring constant.

T = 2π√(0.820 kg / 2620 N/m)

T = 2π√(0.820 / 2620)

T =  0.285 seconds

b.

max speed = Aω

A =  amplitude

ω=  angular frequency.

ω = √(k/m)

ω = √(2620 N/m / 0.820 kg)

ω = √(3207.3 rad/s²)

ω =  56.64 rad/s

max speed   = 0.340 m × 56.64 rad/s

max speed  =  19.26 m/s

Learn more about angular frequency at:

https://brainly.com/question/3654452

#SPJ1

Answer:

v=20

Explanation:

v=u + at

v=0 + 5×4

v=20

If the ice starts out at -2.0 instead of 0, the amount of error introduced to the latent heat of fusion would be negligible.

The latent heat of fusion of ice is 334 kJ/kg. The specific heat capacity of ice is 2.1 kJ/kgK. The amount of heat required to raise the temperature of ice from -2.0 to 0 is (2.1 kJ/kgK) * (2 K) = 4.2 kJ/kg.

This amount of heat is only 1.25% of the latent heat of fusion, which is a small enough difference to be considered negligible.

Learn more about Error Generation here:- brainly.com/question/27296136

#SPJ11

The two examples given above serve to highlight the two types of potential energy that will be covered in this course: elastic potential energy and gravitational potential energy.

Thus, The energy that an object stores as a function of its height or vertical position is known as gravitational potential energy. Because of the Earth's gravitational pull on the object, the energy is captured.

The mass of the ball and the height to which it is raised both affect the gravitational potential energy of the huge ball of a demolition machine.

The mass of an object and its gravitational potential energy are directly related. Objects with more mass have more gravitational potential energy.

Therefore, The two examples given above serve to highlight the two types of potential energy that will be covered in this course: elastic potential energy and gravitational potential energy.

Learn more about Potential energy, refer to the link:

https://brainly.com/question/24284560

#SPJ1

Answer:

velocity= 135m/s

Explanation:

velocity = 300×0.45

= 135m/s²

Answer:

DU = 21 KJ

Explanation:

Given the following data;

Quantity of heat = 125 KJ

Work = 104 KJ

To find the change in internal energy;

Mathematically, the change in internal energy of a system is given by the formula;

DU = Q - W

Where;

DU is the change in internal energy.

Q is the quantity of energy.

W is the work done.

Substituting into the formula, we have;

DU = 125 - 104

DU = 21 KJ

Starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², the car will travel a distance of approximately 0.2119 meters or 21.19 centimeters in 0.75 seconds.

To determine the distance traveled and the time elapsed by the car starting from rest on a circular track with a radius of 300 m and a constant tangential acceleration of 0.75 m/s², we can use the equations of circular motion.

The tangential acceleration is the rate of change of tangential velocity. Since the car starts from rest, its initial tangential velocity is zero (v₀ = 0).

Using the equation:

v = v₀ + at

where v is the final tangential velocity, v₀ is the initial tangential velocity, a is the tangential acceleration, and t is the time, we can solve for v:

v = 0 + (0.75 m/s²) * t

v = 0.75t m/s

The tangential velocity is related to the angular velocity (ω) and the radius (r) of the circular track:

v = ωr

Substituting the values:

0.75t = ω * 300

Since the car starts from rest, the initial angular velocity (ω₀) is zero. So, we have:

ω = ω₀ + αt

ω = 0 + (0.75 m/s²) * t

ω = 0.75t rad/s

We can now substitute the value of ω into the equation:

0.75t = (0.75t) * 300

Simplifying the equation gives:

0.75t = 225t

t = 0.75 seconds

The time elapsed is 0.75 seconds.

To calculate the distance traveled (s), we can use the equation:

s = v₀t + (1/2)at²

Since the initial velocity (v₀) is zero, the equation becomes:

s = (1/2)at²

s = (1/2)(0.75 m/s²)(0.75 s)²

s = (1/2)(0.75 m/s²)(0.5625 s²)

s = 0.2119 meters or approximately 21.19 centimeters

Therefore, the car travels a distance of approximately 0.2119 meters or 21.19 centimeters.

To know more about acceleration refer here:

https://brainly.com/question/30660316#

#SPJ11

Answer: 2.72727272......g/cm3^

Explanation:

D = g/cm^3

soo d = 15/5.5

A 15-g block of aluminum has a volume of 5.5 cm. Its density will be 2.73 kg /  \(cm^{3}\)

Density is the measurement of how tightly a material is packed together. It is defined as the mass per unit volume. Density is defined as the ratio of mass of the object to the volume of the object. Different substances have different densities.

The mathematical expression for density is as follows: Density=Mass * Volume. The mass of a substance is expressed in kilograms and the volume is expressed in liter.

Density is an important concept because it allows us to determine what substances will float and what substances will sink when placed in a liquid. Generally, substances float so long as their density is less than the density of the liquid they are placed in.

Density Symbol: ρ

Density Formula: ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.

Density = mass / volume

mass = 15 kg

volume = 5.5 \(cm^{3}\)

density = 15 / 5.5 = 2.73 kg /  \(cm^{3}\)

A 15-g block of aluminum has a volume of 5.5 cm. Its density will be 2.73 kg /  \(cm^{3}\)

To learn more about Density

https://brainly.com/question/15164682?referrer=searchResults

#SPJ2

Amplitude...........

Answer:

Amplitude

Explanation:

we took a test today and this same question showed up and it said it was Anplitude

The value of mass number A for a nucleus whose radius is 3.6 × 10⁻¹⁵m is A) 27.

The mass number A of a nucleus is related to its radius through the formula A = kR³, where k is a constant. Since the radius is given as 3.6 × 10⁻¹⁵m, we can use this formula to find A.

First, we need to determine the value of the constant k. This can be done by looking up the atomic mass unit (u), which is the standard unit for expressing the masses of atomic particles. One u is defined as 1/12th of the mass of a carbon-12 atom, which has a mass of 12 u and a radius of 6.0 × 10⁻¹⁵m. Using these values, we can write:

k = (4/3)π(6.0 × 10⁻¹⁵m)³ / 12

k = 2.54 × 10⁻⁵ m³/u

Now we can plug in the given radius of 3.6 × 10⁻¹⁵m and solve for A:

A = k(3.6 × 10⁻¹⁵m)³

A = 1.07 × 10⁻⁴ u

We need to convert this mass in u to a whole number mass number A. The closest answer choice is 27, which is only slightly lower than our calculated value. Therefore, the best answer is (A) 27.

Learn more about mass number here: https://brainly.com/question/29793337

#SPJ11

Option B; In a mechanical wave, the restoring force is the force that actually causes the oscillation opposite the direction of the displacement from equilibrium.

Oscillation is the repeating or periodic oscillation of a quantity, often in time, around a central value (often an equilibrium point) or between two or more states. A swinging pendulum and alternating current are two common examples of oscillation. Physics can employ oscillations to simulate intricate interactions, as those between atoms.

The beating of the human heart (for circulation), business cycles in economics, predator-prey population cycles in ecology, geothermal geysers in geology, the vibration of the strings in guitars and other string instruments, the periodic firing of nerve cells in the brain, and the periodic swelling of Cepheid variable stars in astronomy are just a few examples of the dynamic systems that exhibit oscillations in nearly every branch of science.

Learn more about oscillation here:

https://brainly.com/question/28994371

#SPJ4

Answer:C car

Explanation:

Answer:

copying another writer's work with no attempt to acknowledge that the material was found in external source is considered as a direct plagiarism.

Answer: Direct plagiarism is the word-for-word transcription of a section of someone else's work, without attribution and without quotation marks.

Explanation: