The half-life for P-32 is 14.3 days. What fraction of a sample of P-32 will be left after 42.9 days?
Answers
Answer: At one half-life (14.3 days) 230 mg of the P-32 would remain. at two half-lives (14.3 + 14.3 or 28.6 days) 115 mg of the P-32 would remain. at three half-lives (14.3 + 14.3 + 14.3 or 42.9 days) 57.5 mg of the P-32 would remain.
Explanation:
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GIVING BRAINLIEST TO THE MOST THOUGHTFUL ANSWER
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MERRY CHRISTMAS! HAPPY HANUKKAH ALL THAT
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The velocity of the vehicle is equal to 406.5 m/s. The velocity in Km/hr is 1463.4 Km/hr.
What is the velocity?Velocity can be demonstrated as a vector measurement of the direction of the object and the rate of motion of an object. The velocity of an object can be described as the change in the body's position w.r.t. time.
Velocity can be expressed as a vector quantity as it consists of magnitude as well as direction. A mathematical formula common and simplest way to find velocity.
v = d / t
Where v is the velocity, d is the distance covered and t is the time taken by the body.
The S.I. unit for velocity can be represented as m/s and can be expressed in terms of miles per hour (mph), and kilometers per hour (kph).
Given, the distance traveled by the vehicle, d = 100 m
The time taken by vehicle = 0.246 sec
The velocity of the vehicle, v = 100/0.246 = 406.5 m/s
We know that 1km = 1000m then 1 m = 10⁻³ Km
1 hour = 60 ×60 = 3600 s
1s = 1/3600 hr
Therefore, velocity, \(\displaystyle v = 406.5 \times \frac{3600}{1000} Km/hr\)
v = 1463.4 Km/hr
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Velocity = Distance / Time = 100 m / 0.246 s = 406.50 m/s
To convert m/s to km/hr, we need to multiply the velocity by 3.6:
Velocity in km/hr = Velocity in m/s x 3.6 = 406.50 m/s x 3.6 = 1463.80 km/hr
The steps I took to convert from m/s to km/hr were to multiply the velocity in m/s by 3.6, which is the conversion factor between meters per second and kilometers per hour.
The magnetic field created around a single wire is _________.
Answers
Answer:
A
Explanation:
it is weak I hope it helps u have a great day
If someone lifts less weight than you, explain why that person could be considered more powerful.
Answers
Answer:
there faster
Explanation:
stronger,wiser,better,THEY ARE BETTTEEEEEEEERRRRRRRR
Answer:
they're so strong that they don't need to lift heavy weights anymore because they're experts (slay lol). so they just have a simple daily workout.
What type of circuit is this in the picture? (Lesson 4.07)
A: Parallel
B: Open
C: Ac
D: Series
Answers
Answer: hope this helps ♡
A: Parallel
Explanation:
It's a parallel circuit because it has two or more paths for the electricity to flow through (the paths are parallel).
Answer:
A
Explanation:
A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J
Answers
Answer:
39,200J
Explanation:
just took the test
The meteor's potential energy if it has a mass of 10kg at an altitude of 400 m will be 39200 J
What is potential energy ?Potential Energy that depend upon the relative position of various parts of system . It is an energy possessed by an object by virtue of its position or configuration.
mass(m) = 10kg
g (acceleration due to gravity) = 9.8m/s^2
altitude(height (h)) = 400m
Meteor's Potential energy = m * g * h
= 10 * 9.8 * 400 = 39200 J
correct option will be a) 39200 J
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Which question would BEST explain why scientists now use Model 2 to describe Earth’s position in the solar system?
A. Did new planets form and change the relative position of the sun and Earth?
B. Did the sun’s position change over time in the solar system?
C. Did new evidence change our understanding of the position of the Earth and sun?
D. Did the position of the Earth and sun change over time in the solar system?
Answers
I love u.
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New planets form and change the relative position of the sun and Earth. So, option A.
What is meant by eccentricity ?Eccentricity is defined as the measurement of the extent to which the curve of an orbital path deviates from the specified shape's circularity.
Here,
A perfect circle and a more elliptical course are alternated by Earth's eccentricity around once every 100,000 years, with the fourth cycle being significantly smaller than the rest. The periodic alignment of the other planets is what causes this oscillation in eccentricity.
It is believed that the largest planetary masses in our solar system are the main causes of this impact.
The sun, one of the stars in our solar system, is joined by many planets, an asteroid belt, a large number of comets, and other celestial bodies.
The ability for life as we know it to develop on Earth was made possible by its location in this roughly disk-like configuration.
Hence,
New planets form and change the relative position of the sun and Earth. So, option A.
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Earth's orbit is an ellipse. Which of the following ellipses most closely resembles the exact shape of Earth's orbit, as seen from directly above the North Pole?
Answers
Earth is revolving around the sun in an elliptical orbit, with sun as one of its focus. So, the correct shape is A.
What is Newton's law of gravity ?Newton's law of gravity states that, every body in the universe attract each other with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Here,
Earth is revolving around the sun in an elliptical orbit, with sun as its focus.
According to Kepler's law of orbits, every planet moves in an elliptical orbit with sun as one of its focus.
From, Newton's law of gravity and Kepler's law of orbital motion, we can say that the earth is moving in an elliptical orbit because, the earth is experiencing gravitational force of attraction due to the sun at the centre and also due to the other planets revolving in the solar system.
Due to the overall gravitational force, the earth will have to adjust the orbital motion in order to attain stability. As a result, the orbit of earth will have a distortion from its circular shape, forming an elliptical shape for orbit, which is a stable shape.
Hence,
Earth is revolving around the sun in an elliptical orbit, with sun as one of its focus. So, the correct shape is D
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Write a report on waves. Some questions you might consider are: What makes a wave? Why are some waves small and some large? How are waves classified? Are there different kinds of waves? What happens when a wave meets the shore? Where in the world do you find the best waves for surfing?
Answers
Answer:
The waves have energy that wave back and forth because the waves are never still, they are always moving. There are different types of waves because sometimes (like a tsunami) the waves are affected by other things like the earth plates. Portugal is one of the best places to surf because they have waves that can reach up to 6 to 15 feet high!
Explanation:
PLS HELP NOW!! I WILL GIVE LOTS OF COINS! In general, explain the amount of force that is applied to both objects during ANY
collision, no matter how big or small, the weight/mass, or velocity of the objects.
Answers
In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction. Such forces often cause one object to speed up (gain momentum) and the other object to slow down (lose momentum). According to Newton's third law, the forces on the two objects are equal in magnitude.
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Which technological advancement made the Pony Express unnecessary?
Steamships
Cotton Gin
Telegraph
Steel Plow
Answers
Answer: Option (C) is correct, Telegraph
Explanation: Hope it helps!
Good luck!!!
In the circuit diagram, what does the line segment with two circles at the ends represent?
A. an electrical conductor
B. an electrical resistor
C. a closed switch
D. a source of electrical energy
Answers
How does the agricultural activity most likely affect the surface water of the area?
Answers
Answer:
Agriculture has been the cause of significant modification of landscapes throughout the world. Tillage of land changes the infiltration and runoff characteristics of the land surface, which affects recharge to ground water, delivery of water and sediment to surface-water bodies, and evapotranspiration.
Explanation:
OK PLEASE HELP
I need to get on a certain online game but it is blocked on my chromebook does anyone know how to unblock stuff?
Answers
Answer:
I am 100% sure you have a SCHOOL chrome book THAT'S WHY!
Explanation:
Answer:
Is the game school related?
Explanation:
If not then I'm afraid there's no unblocking it. Teachers are more strict on certain apps.
Why does an ice cube melt when you hold it in your hand?
A. Thermal energy from your hand flows into the ice cube.
B. Your hand pulls kinetic energy away from the ice cube.
C. The air around the ice cube insulates it from the thermal energy in your hand.
D. Potential energy from your hand is converted into thermal energy.
Answers
Answer:
Thermal heat
Explanation:
The heat is transferred from your hand to the ice cube resulting in it melting.
An electric motor transforms potential energy into mechanical energy.
True or false
Answers
Answer: true
Explanation:
HEEEEELP PPPPPLLLLLZZZZZ
Answers
Which is the definition of the equator?
A. The equator is half of a sphere, which is used to describe one half of the Earth.
B. The equator is the imaginary line that divides the Earth into two equal parts. It is also used as the basis for the word’s time zones.
The equator is the imaginary line that divides the Earth into two equal parts. It is also used as the basis for the word’s time zones.
C. The equator is an imaginary horizontal line drawn on the Earth equally between the North and South poles.
D. The equator is half of a circle used to describe the northern half of the Earth.
Answers
Answer:
D. The equator is half of a circle used to describe the northern half of the Earth.
Explanation:
hope it helps
Answer: C
Explanation: The equator divides the earth into North and South pole
Which of these is NOT a position in hockey?
a
Goalie
b
Wing
c
Defenseman
d
Shortstop
Answers
Answer:
shortstop
Explanation:
cause there are 5 positions ( i think)
Center, Wingers, Defensemen, Goalie, Forwards.
¯\_(ツ)_/¯
Answer:
d.shortstop
Explanation:
Which diagram best shows the field lines around two bar magnets that repel each other?
Answers
Answer:
c im pretty sure
Explanation:
Which group was designed to study Saturn?
A. Cassini, Hubble, and Huygens
B. Huygens, Voyager 1, and Hubble
C. Voyager 1, Huygens, and Cassini
D. Voyager 1, Hubble, and Cassini
Answers
The group which was designed to study Saturn is C. Voyager 1, Huygens, and Cassini. It was a collaborative mission involving NASA, ASI, and ESA.
The trio of Voyager 1, Huygens, and Cassini embarked on groundbreaking missions, collectively enhancing our understanding of Saturn and its diverse moons. Launched by NASA in 1977, Voyager 1 ventured into the outer solar system, conducting close flybys of Jupiter and Saturn, capturing detailed imagery and valuable scientific data.
Huygens, a constituent of the collaborative Cassini-Huygens mission involving NASA, ESA, and ASI, made a historic touchdown on Saturn's moon Titan in 2005. It meticulously examined Titan's atmosphere and surface, yielding unprecedented insights.
Meanwhile, the Cassini spacecraft, another integral part of the Cassini-Huygens mission, meticulously orbited Saturn for more than 13 years. Cassini extensively studied Saturn's rings, atmosphere, and numerous moons, unraveling captivating discoveries such as new moons and tempestuous storms.
The Cassini mission culminated with a planned atmospheric entry into Saturn. These missions collectively revolutionized our knowledge of Saturn, its enigmatic rings, and its captivating moons.
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When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure
note: apparently the answer is friction but it doesn't make sense to me so please explain.
Answers
The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.
I hope this helps!
There are two groups of waves with the same amplitude. One contains waves of short wavelength and the other has waves of long wave-length, Which waves have the most energy?
Answers
short wavelength
Explanation:- wavelength is directly proportional to frequency short wavelength have higher frequency & long wavelength have lower frequency a higher frequency wave have more energy than a lower frequency wave with same amplitudeI HOPE THAT THIS ANSWER HELPS YOUAn airplane travels a distance of 4,000 km from New York to Los Angeles in 5 hours. Enter the numerical value for the average speed of the airplane.
Answers
Answer: Divide the km by the hours.
(you can just say a color)
Answers
Answer:
I think its red
Explanation:
divide the distance 8000 by the hours 10 to get 800
Answer:
Red.
Explanation:
If you divide the distance by the time, you will discover that the airplane traveled 800 miles per hour.
Pls mark Brainliest with the crown.
If two forces act on an object in the same direction, the net
force is equal to the
of the two forces.
Answers
Answer:
yes, the net force is equally two forces sorry I am just try this question about
Explanation:
l don't knowAnswer:
sum
Explanation:
If two forces act on an object in the same direction, the net force is equal to the sum of the two forces.
Using Newton’s third law of motion, explaine how dolphins can move through the water?
Answers
Answer:
As it states that "to every action,there is equal and opposite reaction". similarly,when a dolphin swim it pushes the water in the backwards direction as an action The water pushes the dolphin in the forward direction.Thus the dolphin can move through water.
Explanation:
It may help you
a) The dolphins swimming in the water As the dolphins swim through the water, they act on the water, pushing it aside and backwards. The water exerts an equal and opposite reaction on the dolphins, propelling them forward.
brick has a mass of 100 G and a volume of 25 cm squared, if you chop the brick in half what is the density of one half of the brick?
Answers
Answer: Density is defined as mass divided by volume, therefore: 100g/25cm3 = 4 g/cm3.
Explanation:
Answer:
Density is defined as mass divided by volume, therefore: 100g/25cm3 = 4 g/cm3.
A road sign says "Tucson, Arizona - 120 miles." How many kilometers is this?
slightly less than 60
slightly more than 60
slightly less than 200
slightly more than 200
Answers
The distance in kilometers is equal to the distance in miles multiplied by 1.609344.
What two gases in the atmosphere do animals and plants need to breathe and grow?
Answers
Answer: Explanation:
Plants and animals each produce the gases that the other needs to live. Plants need carbon dioxide—people and other animals exhale carbon dioxide as a waste product. People and other animals need oxygen—plants produce oxygen during an important process called photosynthesis, which turns the sun's energy into nutrients.
72 pts!!! Indicate on the wave graph the location of the following:
Answers
Answer:
A: crest
C: trough
B: wavelength
please give brainlist if it helps!!
Answer:
A: Wavelength
B: Trough
Crest
Explanation: