Freely falling bodies can only move downward.
True
False

The given number is 5.00x10³ liters. How many significant figures are in this number?

We know that significant figures are all the digits in a number that are accurate except: Leading zeros, for example, 0.0005 has one significant figure.Trailling zeros, for example, 5.00 has three significant figures.

The figures in a number that expresses the magnitude of a quantity to a specific degree of accuracy are known as significant digits.Digits from 1 to 9 are always significant and have an infinite number of significant figures.

Zero between non-zero digits, for example, 2005 has four significant figures.Zero at the beginning of the number without decimal, for example, 0.05 has one significant figure.Zero at the beginning of a decimal number, for example, 0.005 has two significant figures.

Here number is 5.00x10³ liters. By looking at this number, we can say that there are three significant figures in the number 5.00 x 10³ liters, namely 5, 0 and 0. The power of 10 in the number doesn't count as a significant figure.

Thus, the answer is: 3.

To know more about significant figures visit:

https://brainly.com/question/24491627

#SPJ11

24,576.11 joules work is done lifting a 35 pound object from the ground to the top of a 45 foot building if the cable used weighs 2 pounds per foot.

The work done while lifting a 35 pound object from the ground to the top of a 45-foot building using a 2-pound per foot cable can be determined by calculating the potential energy of the object at the top of the building.

The potential energy of an object is given by the formula;

Potential Energy = mgh

where m is the mass of the object in kilograms,

g is the acceleration due to gravity which is approximately 9.81 m/s², and

h is the height of the building in meters.

To begin, the 35-pound object needs to be converted to kilograms as follows:

1 pound = 0.45359237 kilograms

Therefore, 35 pounds = 35 x 0.45359237 = 15.875198 kg

The cable weighs 2 pounds per foot, and the height of the building is 45 feet.

Therefore, the total weight of the cable is:

2 pounds per foot x 45 feet = 90 pounds or 40.82331 kg

The total mass, M, of the object and the cable can be found by adding the mass of the object, m, to the mass of the cable,

C.M = m + C

Therefore,

M = 15.875198 + 40.82331M = 56.698508 kg

Now that the total mass of the object and the cable has been found, the potential energy of the object at the top of the building can be calculated.

Potential Energy = mgh

Potential Energy = (56.698508)(9.81)(45)

Potential Energy = 24,576.10561 joules

Therefore, the work done lifting the 35 pound object from the ground to the top of a 45-foot building using a 2-pound per foot cable is approximately 24,576.11 joules.

For similar question on work done

https://brainly.com/question/8119756

#SPJ11

The back side of a polished spoon has f = -6.50 cm (convex). If you

hold your nose 5.00 cm from it then the  magnification of the image is

0.864.

The formula for calculating magnification in such a case is: Magnification = -di/do

Here, f = -6.50 cm is the focal length of the mirror, and the object is the back side of a polished spoon.

The distance between the object and the mirror, in this case, is the distance between your nose and the spoon, which is 5.00 cm.

Thus, the distance of the image from the mirror is:di = -f/(1/do - 1/f)

Putting the values in the formula, we get:di = -6.50/(1/5 - 1/-6.50) = -4.32 cm (negative sign indicates that the image is virtual)

Using the magnification formula, we have: Magnification = -di/do = -(-4.32)/5.00 = 0.864

Thus, the magnification of the image is 0.864.

For more questions on magnification

https://brainly.com/question/15744335

#SPJ8

The horizontal force required to move the crate at a study speed across the floor is 88.2 Newton and a single slight push is enough to move the create when coefficient of kinetic friction is zero.

If the coefficient of the kinetic friction between the crate and the floor is 0.36 and the mass of the great is 25 kg and the horizontal force required to move the crate at a steady speed across the floor can be given by,

Fr = uMg

Where,

u is coefficient of kinetic friction

M is the mass of crate

g is acceleration due to gravity.

To move the crate across the floor with a steady Speed the force applied must be equal to the force of the friction.

Putting values,

Fr = 0.36 x 25 x 9.8

Fr = 88.2 N.

So, a horizontal force of 88.2 N is required to move the crate.

If the coefficient of the kinetic friction between the floor and the crate is zero then a slide single push will be enough to move the create with a constant speed across the floor.

To know more about friction, visit,

https://brainly.com/question/24338873

#SPJ4

The momentum gained by the electron in this scattering process is approximately \(6.91 * 10^{-24} kg m/s\).

In this scenario, an incident X-ray photon of wavelength 0.2019 nm is scattered from a stationary electron, resulting in the photon being scattered at an angle of 180 degrees with a wavelength of 0.2068 nm. The conservation of linear momentum can be used to find the momentum gained by the electron in this process.
The momentum of the photon can be calculated using the formula p = h/λ, where h is Planck's constant and λ is the wavelength of the photon.

Using this formula, we find that the initial momentum of the photon is approximately \(3.093 * 10^{-22} kg m/s\).
The final momentum of the photon can be calculated in the same way, using its new wavelength of 0.2068 nm.

The final momentum is approximately \(3.024 * 10^{-22} kg m/s\).
Since momentum must be conserved in this process, we can find the momentum gained by the electron by subtracting the final momentum of the photon from its initial momentum.

Doing so, we find that the momentum gained by the electron is approximately \(6.91 * 10^{-24} kg m/s\).

To learn more about momentum click here https://brainly.com/question/30677308

#SPJ11

Given :

A rectangular solid box of aluminum is heated.

To Find :

Which of the following is not true.

A) Its mass remains constant

C) its density increase

B) Its volume increase

D) none of the above​

Solution :

We know, when an object is heated it expands.

Objects expands means that the volume increases but mass remains same by conservation of mass.

Since mass remains constant and volume increases.

So, density will decrease.

Hence, this is the required solution.

If the average density is greater than the critical density, the Universe will collapse. In this scenario, the factor by which the distance between remote galaxies would increase in the future cannot be determined using the given information.

To answer this question, we need to consider the critical density of the Universe, which determines its fate. The critical density represents the threshold between an expanding universe and a collapsing one. If the average density of the Universe is greater than the critical density, gravity will eventually overcome the expansion, causing the Universe to collapse.

Assuming the average density is 1.20 pc, we compare it to the critical density. If the average density is less than the critical density, the Universe will continue expanding indefinitely. If the average density is greater than the critical density, the Universe will eventually collapse.

To determine the factor by which the distance between remote galaxies would increase in the future, we need to find the ratio of the average density to the critical density. Let's assume the critical density is denoted as ρ_c.

If the average density (ρ) is less than the critical density (ρ_c), the Universe will expand forever. In this case, the factor by which the distance between remote galaxies would increase in the future would be infinite or more.

To know more about critical density visit:

https://brainly.com/question/25753498

#SPJ11

Answer:

fg

Explanation:

bbjtvnjj

Sirius is approximately \(2.5^{3.9}\) times brighter than Merak when observed from Earth. The apparent magnitude is a scale used to measure the brightness of celestial objects as they appear to an observer on Earth. In this scale, a lower value indicates a brighter object.

The star Merak has an apparent magnitude of 2.4, while Sirius has an apparent magnitude of -1.5. Since Sirius has a lower apparent magnitude value (-1.5) compared to Merak (2.4), Sirius appears brighter in the sky.

This difference in brightness is due to the difference in both their intrinsic luminosities and their distances from Earth. Sirius is not only intrinsically more luminous than Merak but also closer to Earth, which makes it appear even brighter. The apparent magnitude scale is logarithmic, meaning that a difference of 1 magnitude corresponds to a brightness ratio of approximately 2.5 times. In this case, the difference in magnitude between Merak and Sirius is 3.9 (2.4 - (-1.5)). Therefore, Sirius is approximately \(2.5^{3.9}\) times brighter than Merak when observed from Earth.

Learn more about apparent magnitude here:

https://brainly.com/question/8879639

#SPJ11

According to Freud's theory of psychosexual development, identification refers to a process in which a child models their behavior, attitudes, and personality characteristics after someone of the same sex, usually a parent or caregiver.

In other words, the child identifies with and internalizes the traits and values of the person they see as a role model. Identification plays a crucial role in the formation of gender identity, as the child learns what it means to be a boy or girl based on the behaviors and attitudes they observe from their same-sex parent or caregiver.

This process is believed to occur during the phallic stage of psychosexual development, which occurs between the ages of 3 and 6 years old.During this stage, the child's focus is on their genitalia and they begin to develop a sense of gender identity.

They also experience the Oedipus or Electra complex, which is a desire to possess the opposite-sex parent and a fear of retaliation from the same-sex parent. The child resolves this conflict by identifying with the same-sex parent and adopting their gender role as their own.

This process is essential for the child's development of a healthy sense of self and their ability to navigate relationships with others.

For more such questions on psychosexual development visit:

https://brainly.com/question/28261105

#SPJ8

The melting point of a substance is the temperature at which the substance changes its phase from solid to liquid.

The freezing point is the temperature at which the substance changes its phase from liquid to solid.

The melting point of a substance is the same as the freezing point. That is when the temperature of the substance in the liquid form is increased continuously, the temperature at which the substance turns into a solid is equal to the temperature at which the substance will turn into liquid from solid if the temperature is decreased continuously, from a higher temperature.

Answer:

2.38 T

Explanation:

Since the number of coils and the change in time are both 1, I set it up as 3.57=1.50(x) and then solved for x to be 2.38 T.

The tornado has the angular velocity of 0.568 revolutions per second. It is obtained by using the formula for angular velocity.

The formula for the angular velocity of the tornado can be found by:

ω = v/r

Where

We have a tornado with a diameter of 49.0 m and the linear velocity of wind of 315 km/h. Find the angular velocity in revolutions per second!

Let's find its radius and convert the unit of linear velocity.

The radius of the tornado can be found by dividing its diameter by 2:

r = d/2 = 49.0/2 = 24.5 m

The linear velocity in m/s is

315 km/h = 315 × 1,000 × 1/3,600 m/s

315 km/h = 87.5 m/s

We can rearrange the formula above to solve for angular velocity:

ω = v/r
ω = 87.5 m/s / 24.5 m
ω ≈ 3.57 rad per second

Remember that 1 revolution = 2π radians. So, we get angular velocity in rev per second:
ω = 3.57 rad/s

ω = 3.57/2π

ω ≈ 0.568 rev/s

Hence, the angular velocity of the tornado at its peak is approximately 0.568 revolutions per second.

Learn more about angular velocity here:

brainly.com/question/12446100

#SPJ11

The amplitude of the current in the circuit element will depend on the impedance of the element and the frequency of the applied voltage. If the frequency of the applied voltage is increased, the impedance of the circuit element may also increase, causing a decrease in the current amplitude.

On the other hand, if the impedance of the element decreases with increasing frequency, the current amplitude may increase. This behavior is described by the frequency response of the circuit element, which is characterized by its frequency-dependent impedance.

In some cases, the frequency response may exhibit resonance, where the impedance is at a minimum and the current amplitude is at a maximum at a certain frequency. The relationship between the amplitude of the current and the frequency of the applied voltage is dependent on the impedance of the circuit element and its frequency response.

To know more about amplitude visit :

https://brainly.com/question/9525052

#SPJ11

The man does 0 Joules of work on the wall. A 75.0 kg man pushes on a 5.0 x 10^5 ton wall for 250 s but it does not move. Therefore, he does 0 Joules of work on the wall.

Work is calculated using the formula ,

W = F * d * cos(theta), where W is work, F is force, d is the distance the object moves, and theta is the angle between the force and the direction of movement.

Since the wall does not move, the distance (d) is 0.

Therefore, the work done is also 0, no matter the force applied or the time spent pushing.

Hence, A 75.0 kg man pushes on a 5.0 x 10^5 ton wall for 250 s but it does not move. Therefore, he does 0 Joules of work on the wall.

learn more about force click here:

https://brainly.com/question/12785175

#SPJ11

Answer:

During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation. More neutrons are also released when a uranium atom splits. These neutrons continue to collide with other uranium atoms, and the process repeats itself over and over again.

Explanation:

In nuclear fission the nucleus of an atom breaks up into two lighter nuclei. The process may take place spontaneously in some cases or may be induced by the excitation of the nucleus with a variety of particles (e.g., neutrons, protons, deuterons, or alpha particles) or with electromagnetic radiation in the form of gamma rays. In the fission process, a large quantity of energy is released, radioactive products are formed, and several neutrons are emitted. These neutrons can induce fission in a nearby nucleus of fissionable material and release more neutrons that can repeat the sequence, causing a chain reaction in which a large number of nuclei undergo fission and an enormous amount of energy is released. If controlled in a nuclear reactor, such a chain reaction can provide power for society’s benefit. If uncontrolled, as in the case of the so-called atomic bomb, it can lead to an explosion of awesome destructive force.

Answer:

In nuclear fission, atoms are split apart, which releases energy. All nuclear power plants use nuclear fission, and most nuclear power plants use uranium atoms. During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation.

Answer:

gkcfgggxg hhfdc ghgffgccvvc

bjvhgf

Explanation:

gjhghujj bhhgghj

natural salad.

Mrs. James mixes tomatoes, bananas, and garden rocks together. She has made a natural salad.

Hope it helps you...

Benjemin

The 1.12 seconds to catch the potted plant after it drops from the ledge.

To determine the time it takes for the potted plant to fall from a height of 6.3 m, we can use the equation of motion for free fall:

h = (1/2) * g * t^2

where:

- h is the height (6.3 m in this case)

- g is the acceleration due to gravity (approximately 9.8 m/s^2)

- t is the time

Rearranging the equation to solve for time:

t = sqrt((2 * h) / g)

Substituting the given values:

t = sqrt((2 * 6.3 m) / 9.8 m/s^2)

t ≈ 1.12 seconds

To know more about equation of motion refer here

https://brainly.com/question/29278163#

#SPJ11

Answer:

speed

Explanation:

Change in velocity, not velocity, is used to calculate the average acceleration. Velocity is displacement over time.

It is defined as the ratio of change in velocity to time. It is given by:

Acceleration= Change in velocity / time

a= u-v / t

where,

u= initial velocity

v= final velocity

t= time

Thus, we can conclude that a change in velocity is used to calculate average acceleration.

Find more information about Acceleration here:

brainly.com/question/22048837

The possible reason for zero light being detected through the eyepiece when observing a fluorescent-dyed sample under a microscope could be the absence of excitation light.

Fluorescence microscopy relies on the principle of fluorescence, where a sample absorbs light at a specific wavelength and emits light at a longer wavelength. To observe fluorescence, two key components are required: excitation light and emission light.

The excitation light, typically provided by a specific wavelength of light such as ultraviolet or blue, is used to excite the fluorophores in the sample. These fluorophores then emit light at a longer wavelength, known as the emission light, which is detected by the microscope's eyepiece or camera.

In the given scenario, if there is zero light being detected through the eyepiece, it suggests that there might be no excitation light reaching the sample. This could occur due to several reasons. One possibility is that the light source for excitation is not turned on or not properly aligned with the sample. Another reason could be a malfunctioning excitation light source, such as a bulb or laser.

Additionally, if the fluorescent dye used in the sample requires a specific wavelength of excitation light and the microscope's light source does not emit light at that particular wavelength, it would result in no excitation and consequently no fluorescence.

To troubleshoot this issue, one should ensure that the excitation light source is properly functioning and aligned with the sample. Checking the light source settings, replacing bulbs if necessary, and adjusting the microscope's configuration to match the required excitation wavelength are crucial steps to consider.

Learn more about microscope

brainly.com/question/1869322

#SPJ11

Using first equation of kinematics

\(\boxed{\sf v=u+at}\)

\(\\ \sf\longmapsto t=\dfrac{v-u}{a}\)

\(\\ \sf\longmapsto t=\dfrac{30-6}{4}\)

\(\\ \sf\longmapsto t=\dfrac{24}{4}\)

\(\\ \sf\longmapsto t=6s\)

Answer: 10 minutes and 9 inches

Explanation:

I got it right and they are counting by 2 and 3

Answer:

The kangaroo's horizontal speed will be 9.7 m/s and its departure speed will indeed be 10.65 m/s.

By observing the pace at which this compressed region moves through the medium, we may determine the sound speed. The sound wave travels at a speed of around 343 meters per second in low humidity at 20 degrees Celsius.

The following equation relates the distance to the direction and initial velocity:

d = [v₀²sin2θ]/g, where θ – the angle of the jump.

Thus, v₀² = gd / (sin2θ) = (9.8×8)/0.69 = 113.62

v₀ = 10.65 m/s ( the take off speed).

The horizontal velocity equals:

vₓ = v₀cos 22° = 10.65 m/s × 0.92 = 9.7 m/s

To know more about speed visit:

https://brainly.com/question/28224010

#SPJ1

Answer:

1)  10 kg-m/s

2)  2 kg

3)  20 m/s

Explanation:

The momentum of an object can be calculated using the equation:

\(\large\boxed{p=mv}\)

where:

\(\hrulefill\)

For this question we need to find the momentum of a bowling ball whose mass is 4.0 kg is rolling at a rate of 2.5 m/s.

Given values:

Substitute the given values into the momentum formula and solve for p:

\(p=4.0\;\text{kg} \cdot 2.5\;\text{m/s}\)

\(p=10\;\text{kg m/s}\)

Therefore, the momentum of the bowling ball is 10 kg-m/s.

\(\hrulefill\)

For this question we need to find the mass of a skateboard rolling at a velocity of 3.0 m/s with a momentum of 6.0 kg-m/s.

Given values:

As we want to find mass, rearrange the momentum formula to isolate m:

\(\large\boxed{m=\dfrac{p}{v}}\)

Substitute the given values into the formula and solve for m:

\(m=\dfrac{6.0\; \text{kg m/s}}{3.0\; \text{m/s}}\)

\(m=2\;\text{kg}\)

Therefore, the mass of the skateboard is 2 kg.

\(\hrulefill\)

For this question we need to find the velocity of a baseball with a mass of 0.5 kg and a momentum of 10 kg-m/s.

Given values:

As we want to find velocity, rearrange the momentum formula to isolate v:

\(\large\boxed{v=\dfrac{p}{m}}\)

Substitute the given values into the formula and solve for v:

\(v=\dfrac{10\; \text{kg m/s}}{0.5\; \text{kg}}\)

\(v=20\;\text{m/s}\)

Therefore, the velocity of the baseball is 20 m/s.

The correct central ray (CR) orientation for a lateral decubitus abdomen describes the orientation which is important to obtain proper radiography.

Below are the following terms associated with lateral decubitus abdomen:

You can learn more about radiography at: brainly.com/question/28869145

#SPJ11