An object has a density of 0.25g/L and mass of 5g. What is its volume?

Answer:

The answer is C.

When Earth is positioned precisely between the Moon and Sun, Earth's shadow falls upon the surface of the Moon, dimming it and sometimes turning the lunar surface a striking red over the course of a few hours which is how a lunar eclipse happens.

When the Moon orbits Earth, the Moon moves between the Sun and Earth. When this happens, the Moon blocks the light of the Sun from reaching Earth. This causes an eclipse of the Sun, or a solar eclipse. During a solar eclipse, the Moon casts a shadow onto Earth.

The acceleration of an object in free fall motion is the constant acceleration due to gravity

(i) The gradient of the rocket at point B is approximately -9.81 m/s²

(ii) The reason why the gradient is -9.81 m/s² is as follows;

The given graph is the speed to time graph with the upward direction taken as positive

Given that at point B the object is at the maximum point, the upward motion due to the rocket stops, the motion of the rocket is then due to gravity

Therefore, the gradient at B, is given as follows;

\(Gradient = \dfrac{\Delta v}{\Delta t } = \dfrac{d(u + a \cdot t)}{dt} =a\)

At point B the only force acting on the rocket is the force of gravity, therefore, the acceleration of the rocket at B, a = g, acceleration due to gravity ≈  9.81 m/s², and the rocket is falling due to its weight

Therefore, only gravitational force is acting on the rocket when the direction of the rocket changes and rocket falls freely, at B, and the acceleration of the rocket at B = g = 9.81 m/s²

Learn more about free fall motion here:

https://brainly.com/question/16808647

Answer:

a. The average speed is 4 mi/hr

b. The average velocity is 0 mi/hr

Explanation:

a. The average speed is given by the following formula;

\(Average \ speed = \dfrac{Total \ Distance}{Total \ Time}\)

The given information are;

The time it took for one friend to run to his friend's house = 30 minutes

The distance between the two houses = 3 miles

The time it took for the friend to walk home = 1 hour

Therefore, the distance the friend ran going to his friend's house = 3 miles and the distance the friend walked going back his house = 3 miles

The total distance travelled = 3 + 3 = 6 miles

The total time taken = 1 hour + 30 minutes = 1 hour 30 minutes = 1.5 hours

Therefore;

\(The \ average \ speed = \dfrac{Total \ Distance}{Total \ Time} = \dfrac{6 \ miles }{1.5 \ Hours} = 4 \ miles \ per \ hour\)

The average speed for the entire trip = 4 mi/hr

b. The average velocity is the total change in position divided by the total time taken to make the change or total displacement divided by the total time for the displacement

Mathematically, average velocity is given as follows;

\(The \ average \ velocity = \dfrac{Final \ location - Initial \ location}{Time \ taken \ for \ the \ change \ in \ location}\)

\(The \ average \ velocity = \dfrac{Total \ displacement}{Time \ taken \ for \ the \ change \ in \ location}\)

\(The \ average \ velocity = \dfrac{Total \ change \ in \ location}{Time \ taken \ for \ the \ change \ in \ location}\)

Given that the friend changed his location to his friend's house, a distance of 3 miles he  we have;

Initial change in location of the friend = 3 miles

After which the friend then relocates back to his house (and we know that it is the same journey but in opposite direction, he  we have;

Final change in location of the friend = -3 miles

We are given that he ran to his friend's house and walked back home in a  total time of 1 hour + 30 minutes = 1.5 hours, therefore, we have;

\(The \ average \ velocity = \dfrac{Sum \ total \ of \ change \ in \ location}{Time \ taken \ for \ the \ change \ in \ location} = \dfrac{3 + (-3) }{1.5}\)

\(The \ average \ velocity = \dfrac{3 \ miles + (-3) \ miles }{1.5} = \dfrac{0 \ miles }{1.5} = 0 \ mi/hr\)

The average velocity = 0 mi/hr.

The distance between two wavefronts is termed as wavelength.

The wavelength of a sound wave is defined as the space between two adjacent wavefronts. The number of wavefronts the observer detects during a period of time can be used to calculate the wave's frequency.

The medium (such as a vacuum, air, or body of water) through which a wave travels determines its wavelength. Waves can be anything from music to light to water to periodic electrical signals. While light and other electromagnetic radiation use variations in electric and magnetic field strength, sound waves are variations in air pressure. Water waves are fluctuations in a body of water's height. Atomic locations change during the shaking of a crystal lattice.

To know more about wavelength click here,

brainly.com/question/10728818

#SPJ4

Answer:

U could measure it in area and in operations.

Answer:

meters, millimeters, kilometers, centimeters, inches, feet, yards, miles

Answer:

the awnser is c The salinity of ocean water decreases and the temperature of ocean water increases as the depth increases.

Answer:

about 10 milliamperes

Explanation:

currents above 10ma can paralize or "freeze bodies"

Answer:

Value closest to 1

Explanation:

It is described from the scenario above that ice cream sales decreases as the outside temperature increases, hence showing a strong relationship between both variables (icream sales and temperature). The correlation Coefficient is a metric used in regression modeling to depict the strength of relationship between two variables, (The dependent and independent variables). Correlation Coefficient ranges from (-1 to +1). With values close to 1 or - 1. Also the positive and negative signs are used to show the type of relationship between the variables. If an increase in variable A leads to a decrease in variable B, then we have negative correlation (-) ; while an increase or decrease in both variables depicts a positive correlation. The most likely correlation Coefficient for the study above will be a positive value which is close to 1 since the relationship is described as strong.

Answer:

the anser is

Explanation:

Acceleration is defined as the rate of change of velocity.

Acceleration = (Change in velocity) / time taken

Acceleration = (Final velocity - initial velocity) / time

As the object velocity changes by the same amount in each second, it means the acceleration is constant.

Answer:

The work done is 12 MJ.

Explanation:

The engine of a car exerts a constant traction force of F=4000N . Assume that the car is moving at a constant speed of 36 km/hr. In five minutes, what is the work done by the engine's traction?

Force, F = 4000 N

speed, v = 36 km/h = 10 m/s

time , t = 5 minutes = 5 x 60 = 300  s

Work done is given by

W =  force x distance

W = 4000 x 10 x 300 J = 12 x 10^6 J = 12 MJ

The atmosphere's capacity to trap heat and warm the Earth is increased by human activities like burning fossil fuels and deforestation. This is the source of global warming. The correct answer is: A true

About 20% of solar radiation is absorbed by the atmosphere. This is the greenhouse effect. Greenhouse gases (GHGs) in the Earth's atmosphere keep the planet's surface warm and livable by trapping some of the heat that would otherwise be lost into space. The primary greenhouse gases are carbon dioxide, methane, water vapor, and ozone, all of which occur naturally in the atmosphere as well as being introduced by humans.The absorption of infrared radiation by atmospheric gases, clouds, and the Earth's surface is known as the greenhouse effect. This energy is transmitted back into space by the Earth's surface and atmosphere. The greenhouse effect is responsible for approximately 60 degrees Fahrenheit (33 degrees Celsius) of warming.

To learn more about Global warming :

https://brainly.com/question/3553382

#SPJ11

232 nm is the wavelength of the emitted photon.

\(E = (h^{2} /8mxL^{2} )* n^{2}\)

For n=3 we a energy equal :9.62 * 10^-19 J= 6.01 eV

For n=1 the energy is: 1.069 *10^-19 J=0.66 eV

The energy difference Is 5.35 eV so by using this relationship

λ=1240/Energy = 232 nm

A waveform signal's wavelength is defined as the separation between two identical points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. This length in wireless systems is typically expressed in meters (m), centimeters (cm), or millimeters (mm) (mm).

To learn more about wavelength from the given link:

brainly.com/question/13533093

#SPJ4

Answer:

True

Radiometric dating is a process of identifying the age of a material based on known half-lives of decaying radioactive materials found in both organic and inorganic objects. Radiometric dating is often used to determine the age of rocks, bones, and ancient materials.

Answer:

false

Explanation:

Answer:

no

Explanation:

HIV transmits only during fluid interaction, only if she Heather had an cut exposing the inner skin then HIV can be transmitted

The current in a solenoid with a length of 1.0 m, 11,725 turns, and a magnetic field of 0.6 tesla is approximately 25.7 amps.

The formula for the magnetic field inside a solenoid is given by

B = μ₀ * n * I,

where B is the magnetic field, μ₀ is the permeability of free space, n is the number of turns per unit length, and I is the current.

Rearranging this equation to solve for I, we get

I = B / (μ₀ * n).

Plugging in the values given in the question, we have

I = 0.6 T / (4π × 10⁻⁷ T·m/A * 11,725 turns/m) ≈ 25.7 A.

Therefore, the current in the solenoid is approximately 25.7 amps.

To know more about solenoid, refer here:

https://brainly.com/question/22043434#

#SPJ11

Answer:

It is induction

The speed is v = 0.281 m/s speed does the 60-kg skater acquire.

From law of conservation of momentum.

\(p_{i}\) = \(p_{f}\)

(\(m_{1}\)+\(m_{2}\))v = \(m_{1}v_{1}\) + \(m_{2}v_{2}\)

(45+60)kg × 0m/s = 45×0.375 +60\(v_{2}\)

0=45×0.375 +60\(v_{2}\)

60\(v_{2}\) = -45×0.375

\(v_{2}\) = -0.28125 m/s

∴ v= 0.281m/s

In Newtonian mechanics, an object's mass and velocity are combined to form momentum, more precisely linear momentum or translational momentum. It has both a magnitude and a direction, making it a vector quantity. If an object has mass (m) and velocity (v), both of which are vector quantities, then its momentum (p) is: p= mv.

The kilogram meter per second (kg m/s), or newton-second in the International System of Units (SI), is the unit used to measure momentum.

The rate of change of a body's momentum is equal to the net force acting on it, according to Newton's second law of motion.

To learn more about momentum visit here:

brainly.com/question/24030570

#SPJ4    

Answer:

6. Paula is correct. Think about buildings, buildings are constantly pushed by different forces like wind or gravity. The buildings aren’t moving but this doesn’t mean that they aren’t under force

Explanation:

Answer:

200 J

Explanation:

Given that,

Force, F = 20 N

Distance covered in the direction of force, d = 10 m

We need to find the effort made by Mrs. Lasarati. It  will be given by :

W = Fd

W = 20 N × 10 m

W = 200 J

So, the required effort made by Mrs. Lasarati is 200 J.

An image produced from a digital signal is clearer than an image produced from an analog signal because the image produced from digital signal is not continuous as they divided into small pixels.

A digital signal encodes data as a sequence of discrete values and this type of signal can only have one value from a finite set of possible values at any given time.

An analog signal is usually in the form of voltage or current that continuously and infinitely varies in accordance with some time-varying parameter.

Examples of analog signal include;

The image produced by digital signal versus image produced by analog signal.

The image produced from an analog signal has various levels of brightness and colors.

This image from analog signal is generally continuous and not broken into many small individual pieces.

However, the image produced by digital signals are recorded as many numbers.

This image from digital signal is not continuous as they are divided into a matrix or array of small picture elements, or pixels.

Learn more about digital signal here: https://brainly.com/question/26277947

#SPJ1

Given that the mass of the ball is m = 0.57 kg.

The speed of the ball is

A) The kinetic energy at point A will be

B) Given that the kinetic energy,

The ball's speed at point B will be

C) The total work done on the ball to move from point A to B is

So the magnitude of the impulse given is 50 kg m/s.

An impulse is defined as the force applied for a time. For a force with a constant magnitude, we can find the magnitude of the impulse by multiplying the magnitude of the force by the time that force is exerted. If the force is not constant, we simply integrate the force function over the set time period.

Impulse is denoted by J. And mathematically it is given as

                               J= Ft = Δp

And Δp is the change in momentum of the body which is given so we get,

                         J=50kg m/s

which is required impulse.

For further information about impulse:

https://brainly.com/question/16980676

#SPJ4

The angular wave number of a wave with a speed of 5 m/s and a frequency of 10 Hz is equal to ω = 2πf/v = 2π (10 Hz) / (5 m/s) = 6.283185 rad/s.

The angular wave number is an important parameter in describing the characteristics of a wave. It is a measure of the number of wave cycles that occur in a given distance, and it is related to the wavelength, frequency, and speed of the wave.

The angular wave number can also be used to calculate the frequency of a wave from its wavelength and speed. This is done by using the equation f = v/2πλ, where f is the frequency, v is the speed of the wave, and λ is the wavelength.

Learn more about angular wave:

https://brainly.com/question/16778512

#SPJ4

Given:

The height from the ground is h = 350 m

The gravitational potential energy is GPE = 120,200 J

To find the mass of the hiker.

Explanation:

The mass of the hiker can be calculated by the formula

Here, g =9.8 m/s^2 is the acceleration due to gravity.

On substituting the values, the mass of the hiker will be

Thus, the mass of the hiker is 35.044 kg

Answer:

a typical meteorite’s weight, surface area, and coefficient of drag; air density close to Earth

Explanation:

i just took the quiz lol :3

Answer:

The Gravitational force is the answer.

Answer:

\(7.5 \times 10 {}^{6} \)

Explanation:

Speed of electromagnetic waves=

\(3 \times 10 {}^{8} ms\)

m/s

\( = 3 \times 10 {}^{8} ms \times 0.025\)

\( = 3 \times 10 {}^{8} \times \frac{1}{40} \)

\( = 7.5 \times 10 {}^{6} m\)

Here the missing component is company group.

Energy is the ability to do the work . scientist defines energy as the ability to do work.

We have to have a sample of people representative of the population to compare the experiment results on, because there may be other factors in the general population, in this case, improving memory, that they are saying is because of the energy drink. For example, if all of the population in the random sampling were having improved memory due to something else, then the experiment wouldn't be valid.

These groups of people are used to measure how the deviation from the improvement of memory, in this case, to an average of the population.

These are called control groups.

To know more about energy click-

https://brainly.com/question/14427111

#SPJ4

When cycling forward in a straight line, the knee is rotating about a(n) horizontal axis.

Cycling, often known as bicycling or biking when done on a two-wheeled bicycle, refers to the use of cycles for transportation, recreation, exercise, or sport. Cycling enthusiasts are known as "cyclists," "bicyclists," or "bikers." In addition to riding a two-wheeled bicycle, "cycling" also refers to using a recumbent bike or other comparable human-powered vehicles (HPVs), such as a unicycle, tricycle, or quadricycle.

Since their invention in the 19th century, bicycles have grown to almost one billion in number globally. In many regions of the world, especially in heavily populated European towns, they are the main form of transportation. For short to medium distances, cycling is widely regarded as an effective and efficient means of transportation.

More on cycling: https://brainly.com/question/30288963

#SPJ11

Answer:

In this case the net force is zero.

According to Newton's third law of motion: For every action, there is an equal and opposite reaction. In this case the net force is zero.

Explanation:

Hope this helps!! :)