Answer:26
Explanation:
The Drake equation calculates the number of technically advanced civilizations in the galaxy as a product of seven factors: R* fp ne fl fi fc L. In the sample calculation in the text, these values are taken as 1 × 1 × 0.1 × 1 × 1 × 1 × 100 = 10. If we were to redo the calculation, increasing each increasable factor by a multiple of ten, what would the result be?
A sample of an unknown liquid has a volume of 24.0 mL and a mass of 6 g. What is its density? Show your work or explain how you determined this value.
Answer: 0.25 grams per milliliter
Explanation:
The formula to calculate the density is given by :-
[tex]\text{Density}=\dfrac{\text{Mass}}{\text{Volume}}[/tex]
We are given that the volume of liquid is 24.0 mL.
Mass = 6g
Now, the density of liquid is given by :-
[tex]\text{Density}=\dfrac{6}{24}\\\\\Rightarrow\ \text{Density}=0.25\ g/ml[/tex]
Hence, its density = 0.25 grams per milliliter.
what are the characteristics and phases of the moon
what was Galileo’s contribution to the study of motion?
Galileo Galilei was the first to systematically study force and motion.
He began doing so by conducting experiments to search for the cause of motion.
- Marlon Nunez
The bending of light as it passes from one medium to the next is
Which of the following is the tendency for a material to oppose the flow of electrons and change electrical energy into thermal energy?
A. resistance
B. volts
C. Ohms
D> electric current
Answer:
The correct answer is option A.
Explanation:
Resistance :It is a measure of the opposition against the flow of electric current in an electric circuit.It is also defined as ratio of voltage applied to the current. It is measured in Ohms.
[tex]Resistance(R)=\frac{Voltage(V)}{Current(I)}[/tex]
Voltage is defined as work done to move an unit charge from one point to another against the electric field.it is measured in Volts.
Current is defined as flow of electrical charges through an electrical circuit.It is measured in ampere.
In multiverses, does a person do the exact same thing in all of the different dimensions? And is the person a 100% identical to the other version in the other parallel universes?
Final answer:
In the Many-Worlds Interpretation of quantum mechanics, all possible outcomes of quantum events occur in their own separate universes, leading to the existence of parallel universes. Therefore, a person does not do the exact same thing in all different dimensions, and a person is not 100% identical across these parallel universes. Differences arise from the unique outcomes of quantum events in each universe.
Explanation:
The concept of multiverses and parallel universes is a fascinating and complex topic in the field of theoretical physics, particularly under the Many-Worlds Interpretation (MWI) of quantum mechanics. This interpretation suggests that all possible outcomes of quantum measurements do indeed happen, but each outcome occurs in its own separate universe, or "parallel universe." According to this theory, with every quantum event, the universe 'splits' into a set of parallel universes, each representing a different possible outcome of that event, leading to a nearly infinite number of parallel universes.
Therefore, in some of these universes, a version of 'you' could indeed be doing something completely different than what you're doing right now, and with potentially slight or significantly different personal attributes or life circumstances.
In the context of whether a person is 100% identical across different dimensions, the answer is generally no. Given the practically infinite number of diverging paths at each quantum event, it is highly unlikely that there would be a universe where your counterpart is exactly the same as you in every possible way.
Small differences can arise from different outcomes of events, leading to potentially significant divergences over time. Thus, in another parallel universe, versions of individuals might share some core characteristics or memories but differ in various aspects due to the unique sequence of events they have experienced in their respective universes.
Which of the following statements is true? After one half-life, 75% of the original radionuclide will remain. After two half-lives, 50% of the original radionuclide will remain. After four half-lives, 12.5% of the original material will remain. After three half-lives, 25% of the original material will remain.
objects that exhibit projectile motion follow what kind of path
Answer:
Parabolic
Explanation:
The projectile motion is the example of two dimensional motion under the influence of gravity.
The general equation of projectile motion is
y = x tan theta - gx^2/ 2u^2 cos^theta
It is the quadratic equation in x which shows that it is the equation of a parabola.
how does the moon manipulate the tides on the earth
What is empirical evidence and what is it not
For adults, the RDA of the amino acid lysine is 12 mg per kg of body weight. How many grams per day should a 78kg adult receive?
If the force of gravity between a book of mass 0.50 kg and a calculator of 0.100 kg is 1.5 × 10-10 N, how far apart are they?
If the force of gravity between a book of mass 0.50 kg and a calculator of 0.100 kg is 1.5 × 10⁻¹⁰ N. The book and the calculator are approximately 0.1493 meters (or 14.93 centimeters) apart.
To find the distance (r) between the book and the calculator, we can use the formula for the force of gravity between two masses:
F = (G × m₁ × m₂) / r²
Now, rearrange the formula to solve for r:
r² = (G × m₁ × m₂) / F
r² = (6.674 × 10⁻¹¹ × 0.50 × 0.100 ) / (1.5 × 10⁻¹⁰ N)
r² = (3.337 × 10⁻¹²) / (1.5 × 10⁻¹⁰)
r² = 0.02225 m²
Now, take the square root of both sides to find the distance (r):
r = √0.02225 m²
r = 0.1493 meters
So, the book and the calculator are approximately 0.1493 meters (or 14.93 centimeters) apart.
To know more about the distance:
https://brainly.com/question/34824016
#SPJ3
If 60 lbs of force must be applied to the valve for it to open, how much upward force must push rod X apply for the valve to open?
Answer:
It must push 40 lbs of force to open the valve.
Explanation:
The momentum at one end of the pivot must be equal to the momentum at the other end. Assuming the 60 lbs of force (F1) is applied at 2 inches from the pivot (d1) and the upward force (F2) is applied at 3 inches from the pivot (d2), then:
F1*d1 = F2*d2
Solving for F2 we get:
F2 = F1*d1/d2
F2 = 60*2/3 = 40 lbs of force
All of the following examples involve chemical energy except: A.working muscles using food b.burning a candle c.lightng a match .d.coasting downhill on a bike
Which of the following is a benefit of space exploration?
Space exploration has lowered taxes.
Space exploration has helped Florida’s economy.
Space exploration has made some people famous.
Space exploration makes people want to go to outer space.
Space exploration has helped Florida's economy and inspires people to want to go to outer space.
Explanation:The benefit of space exploration is that it has helped Florida's economy, made some people famous, and has inspired people to want to go to outer space. For example, the Kennedy Space Center in Florida has attracted tourism and created jobs, boosting the state's economy. Additionally, astronauts like Neil Armstrong and Buzz Aldrin gained fame for being the first humans to walk on the moon, which brought attention and interest to space exploration.
Learn more about Benefits of Space Exploration here:https://brainly.com/question/1979086
#SPJ12
Which statement best describes how work and power are different
To find work we need to know force and distance; to find power we need to know force and velocity.
i hope this helps :))
Convert 11 ppm into a percent
To convert 11 parts per million (ppm) into a percent, multiply 11 by 0.0001% to get 0.0011%.
To convert 11 parts per million (ppm) into a percent, you need to understand that one ppm is equivalent to 0.0001%. Knowing this, the conversion can be done by multiplying the number of parts per million by 0.0001%.
Step 1: Write down the value in ppm which is 11 ppm.
Step 2: Multiply the ppm value by 0.0001% to convert it to a percent.
11 ppm times 0.0001% = 0.0011%
Therefore, 11 ppm is equal to 0.0011 percent.
Kai takes a hamburger off of the grill and puts a piece of cheese on it. Explain how and why the cheese melts when Kai puts it on the hamburger.
The piece of cheese melts when it’s placed on the hamburger because conduction occurs. The hamburger is warmer than the cheese, so thermal energy is transferred from the hamburger to the cheese, causing it to melt.
A –4.0-µC charge is located 0.45 m to the left of a +6.0-µC charge. What is the magnitude and direction (to the right or to the left) of the electrostatic force on the positive charge?
Because of negative side the direction of Electrostatic force will be right to left that means to the left
Magnitude of Electrostatic force will be = 1.0667 N
What is electrostatic force ?The electrostatic force is an attractive and repulsive force between charged particles . The electric force between stationary charged bodies conventionally known as electrostatic force .
q1 = –4.0 µC
q2 = +6.0 µC
r = 0.45 m
k= 9 * 10 ^ 9
(E) Electrostatic force = k *q1* q2 / r^2
E = (9 * 10 ^ 9) *( –4.0) * ( +6.0) / (0.45)^2
E = - 1066.67 * 10 ^ (-3)
Electrostatic force = - 1.0667 N
Because of negative side the direction of Electrostatic force will be right to left that means to the left
magnitude of Electrostatic force will be = 1.0667 N
learn more about Electrostatic force
https://brainly.com/question/9774180?referrer=searchResults
#SPJ3
Which of the following affects the amount of total cholesterol in your body?
Answer: If you are referring to this question.
Which of the following affects the amount of total cholesterol in your body?
heredity
diet
regular exercise
all of the above
Explanation:
The answer should be the answer choice (all of the above) !
hope this helps!!!! :D
Which device requires an electric power supply?
assuming this question:
Which device requires an electric power supply?
A. A turbine
B. A generator
C. A permanent magnet
D. A motor
The answer would be D. a motor
Explanation: a motor turns electrical energy into mechanical energy so it needs an electric power supply
what are the two main areas of physical science
Physics and chemistry are the two major branches of physical science. Both types of physical science are concerned with the investigation of matter.
What is physical science?In juxtaposition to life science, physical science is a branch of natural science that studies non-living systems.
It, in turn, has many branches, each referred to as a "physical science," which are referred to collectively as the "physical sciences."
Physical sciences are academic bodies of knowledge that seek to discover the underlying laws of nature, which are frequently written in mathematics.
It refers to a group of disciplines that includes astronomy, chemistry, materials science, and physics.
Aside from intellectual development, physical science fosters reasoning ability and logical reasoning in individuals.
Thus, physical science is divided into several categories, including physics, astronomy, and chemistry. Physical science can be applied in a variety of careers.
For more details regarding physical science, visit:
https://brainly.com/question/12842883
#SPJ2
the soft-tissue lining of oyster and clams creates pearls. is a pearl a mineral?
Final answer:
Pearls, created by mollusks like oysters and clams, consist of calcium carbonate but they are not considered minerals. They are organic gemstones formed by the secretion of nacre around an irritant, which is an organic process distinct from the formation process of inorganic minerals.
Explanation:
The soft-tissue lining of oysters and clams, known as the mantle, has the capacity to create pearls. Pearls are formed when a foreign substance, typically a grain of sand, becomes trapped between the mantle and the shell. The mollusk secretes layers of calcium carbonate in the form of nacre, or mother of pearl, which coats the irritant and over time develops into a pearl.
Pearls are not considered minerals; they are organic gemstones created within a living organism. While pearls consist largely of calcium carbonate (CaCO3), which is a mineral component, their organic origin and formation process distinguishes them from true minerals that are inorganic and naturally occurring with a definite chemical composition and crystalline structure.
Calcium carbonate is the primary substance in both pearl and the shells of most mollusks. It's also worth recognizing the cultural and commercial significance of pearls in decoration and jewelry.
The case whereby sound waves are heard at either a higher or lower pitch due to an object's motion is called:
the Doppler effect
shock waves
beats
resonance
Answer:
the Doppler effect
Explanation:
The doppler effect is what we called the effect that happens when the wavelength or frequency of a sound changes because the observer is moving relatevily form the object, could be moving closer or moving further away, but the wavelenght and the frequency changes alongside with the movement.
Two protons are moving up when they enter a magnetic field that points towards you. What happens to the motion of the particles?
Answer: The motion of the given particles towards right.
Explanation:
In the given problem, two protons are moving up when they enter a magnetic field that points towards you. The force exerts on a moving charge in a magnetic field. This force is Lorentz force.
Lorentz force will act on the two protons. Force will be perpendicular to the directions of the velocity and magnetic field. The force will be maximum when the magnetic field and the velocity of the charge are in perpendicular direction.
The expression for Lorentz force is as follows;
[tex]F=q(v\times B)[/tex]
Here, q is the charge, v is the velocity and B is the magnetic field.
The cross product gives the direction of the proton. It can be determined by the right hand rule. The right hand rule states that the thumb points in the direction of the motion of the charges, forefinger points in the direction of field and the middle finger points in the direction of the force.
Therefore, the protons move towards the right.
Which factors improve soil fertility? Select the three correct answers. A. Humus B. Bedrock C. Horizon D. Nitrogen E. Manure
Correct answer choices are :
A) Humus
E) Manure
D) Nitrogen
Explanation:
Soil fertility leads to the capability of a soil to support agricultural plant growth, i.e. to produce plant environment and occur in continued and steady yields of high quality. A fertile soil will include all the important nutrients for basic plant nourishment, as well as other nutrients required in smaller amounts.
Which expression of distance uses SI units? A. 30 miles B. 16 kilograms C. 24 feet D. 500 meters
Answer:
D) 500 meter
Explanation:
As we know that SI unit to measure the distance is meter
so here the SI unit of the measurement of the distance must be in meter units
so it is given as
D) 500 meter
while other options are
A) 30 miles : this is also measurement of distance but it is not in SI unit
B) 16 kilogram : this is measurement of mass
c) 24 feet : this is also measurement of distance but not in SI units
A force of 88 N is used to move a couch 2.1 m. How much work is done?
A. 184.8 J
B. 41.9 J
C. 32.3 J
D. 211.2 J
Final answer:
The work done on the couch when moving it with a force of 88 N over a distance of 2.1 m is calculated using the formula work = force × distance, resulting in 184.8 J.
Explanation:
The question involves calculating work done, which in physics is defined as the product of the force applied to an object and the distance over which the force is applied, provided the force is applied in the direction of motion. For the couch being moved with a force of 88 N over a distance of 2.1 m, the work done can be calculated using the formula: work = force × distance. Therefore, the work done is (88 N) × (2.1 m) = 184.8 J. Thus, the correct answer to the question is A. 184.8 J.
An arrow is shot from a bow at 20.0 m/s at an angle of 65º above the horizontal. The arrow leaves the bow at a height of 1.80 m. At what height will it strike a wall that is 10.0 m away? (Remember to connect the two motions of the arrow using time.)
The height it will strike a wall that is 10.0 m away will be 16.38 meters.
How to find the heigth of the wall?In vertical motion the arrow will be accelerating so, we can use equation of motion, but first we need to find initial vertical and horizontal velocity
Horizontal velocity
cos65 = x( horizontal)/20
x = 8.45m/s
Now we can calculate time after which it strike the wall
8.45=10/t
t = 1.18 s this speed in horizontal will remain constant
The vertical intial velocity
sin65 = y(vertical)/20
y=18.13 m/s
Then use the equation of motion to calculate height
s=ut+1/2 at^2
s=(18.13)(1.18)+ 1/2 (-9.8)(1.18^2)
s=21.40-6.822
s=14.58 m
Since it is already 1.80 above ground
The height of wall be =14.58+1.80=16.38
Therefore, the height it will strike a wall that is 10.0 m away will be 16.38 meters.
Learn more about the concept here;
https://brainly.com/question/8858237
#SPJ2