Answer:
789 kg/m
Explanation:
789 kg/m good luck
Explanation:
The density of alcohol is 800 Kg/m^3 .
How long will your trip take if you travel 4000 m at an average speed of 8m/s
Answer:8.3mins
Explanation:
S=Vt
where V=average speed
S=4000m V=8m/s
4000=8×t
t=4000/8
t=500s
t=500/60
t=8.3min
500 sec
8 min 20 sec
Explanation:Hi there !
8 m ................ 1 s
4000 m ........ x s
x = 4000m×1s/8m = 500 sec = 8 min 20 sec
Good luck !
The ball is partially white, is that an observation or an inference??
Answer:
this is an observation.
Explanation:
you are observing that the ball is partially white
1. Do you think your memories can be altered? Explain
Answer:
Yes
Explanation:
I think our memories can be altered by emotions. If someone tells you something over and over and over again with strong emotion you will start to remember that more than the memory.
Emotions are very powerful and if you feel a certain emotion connected with a different memory I think that is stronger and can trick your brain into thinking that is the memory because of the strong emotion, even though the true memory was right, since it might not have as strong of mental emotion your brain will think that is the false memory because whatever is more memorable your brain will remember.
If that makes any sense,
Help me please Which of the following statements best describes the atoms and molecules that make up a glass
filled with water?
O The atoms and molecules of the liquid water are moving, while the atoms and molecules of the glass are not
moving.
The atoms and molecules of neither the liquid water nor the glass are moving.
O The atoms and molecules of the liquid water are not moving, while the atoms and molecules of the glass are
moving.
The atoms and molecules of both the liquid water and the glass are moving.
Answer:
The correct option is;
The atoms and molecules of the liquid water are moving, while the atoms and molecules of the glass are not moving
Explanation:
Matter that exist in the liquid or gaseous state consist of molecules that move freely about in the entire containing medium for gas, while the molecules move freely in the portion of the container occupied by the fluid in the case of liquid fluids
However, the molecules of a solid are fixed within the current shape of the solid and are only free to vibrate within a fixed location and the allow the passage of subatomic particles such as electrons
As such, the glass cup being a solid, consists of molecules fixed in space, while the liquid water consists of molecules which can translate within the portion of the volume of the glass filled with the water.
A radio signal takes 1.28 s to travel from a transmitter on the Moon to the surface of Earth. The radio waves travel at 3.00108m/s. What is the distance from the Moon to Earth?
Answer:
s = 3.84 x 10⁸ m
Explanation:
The distance traveled by an object, while in uniform motion, is given by the following equation:
s = vt
where,
s = distance covered
v = speed
t = time interval
In this case:
s = distance between Moon and Earth = ?
v = speed of radio waves = 3 x 10⁸ m/s
t = time taken to travel = 1.28 s
Therefore,
s = (3 x 10⁸ m/s)(1.28 s)
s = 3.84 x 10⁸ m
What would the dogs velocity be if ran the same distance in the opposite direction but covered the distance in 24 seconds
Answer:
I learned this last year but I don't remember. Sorry
A hockey puck has a momentum of 3.8 kg•m/s [E]. If its
speed is 24 m/s what is the mass of the puck ? Express
your answer in scientific notation (a.bc x 10-0 kg)
Answer:
[tex]1.6 \times 10 { }^{ - 1} kg \\ [/tex]
Explanation:
I hope, it helped you.
The number line shows the starting and ending velocities for ball 1. What’s the change in velocity of ball 1? Calculate the value mathematically, and check it using the number line.
Answer:
The starting velocity for ball 1 is 1.00 meter/second. Its ending velocity is 0.25 meter/second.
The change in velocity for ball 1 is 0.25 – 1.00 = -0.75 meter/seconds
Answer:
The starting velocity for ball 1 is 1.00 meter/second. Its ending velocity is -0.50 meter/second.
The change in velocity for ball 1 is -0.50 – 1.00 = -1.50 meters/second.
Explanation:
yee hope it helps
From fastest to slowest, rank the speeds of the balls 1 s after being thrown. Rank the speeds of the balls from fastest to slowest. To rank items as equivalent, overlap them. Three balls of different masses are thrown straight upward with initial speeds as indicated: PICTURE
rank speeds
rank acclerations
Explanation:
From the given figure,
Mass of ball A is 4.9 kg and its initial speed is 8 m/s.
Mass of ball B is 1.9 kg and its initial speed is 14 m/s.
Mass of ball C is 0.7 kg and its initial speed is 2 m/s.
We need to find the final speed of the balls 1 s after being thrown. They all are thrown upward under the action of gravity. The equation of motion is : v = u -gt, g = 10 m/s²
For ball A,
v = 8-10(1) = = -2 m/s (downward)
For B,
v = 14-10(1) = 4 m/s (upward)
For C,
v = 2-10(1) = -8 m/s (downward)
It means the ranking is B>A>C i.e. the speed of ball B is the most and that of C is least.
All the balls are moving under the action of gravity. It would mean that the acceleration for all balls is same i.e. 10 m/s²
An automobile slows from 26 m/s to 18 m/s. Its acceleration is −2.0 m/s 2 . How much time does it take for the vehicle to slow down?
Answer:4.0s
Explanation:jus is
the friction between a nonmoving object and the surface is resting on is called..?
I honestly can't find the answer to this
Answer:
Static friction exists between a stationary object and the surface on which it is resting. It prevents an object from moving against the surface. Example: Static friction prevents an object like a book from falling of the desk, even if the desk is slightly tilted
Explanation:
hope this helped
hey can anyone help me out in dis rq!!
Answer:
q+13
Explanation:
convert 15 km/hr to m/s
show work PLS HELPPPP
Answer:
Explanation:
we know that 1 km =1000 m and 1 hour=3600 sec
therefore
15 km/hr=15*1000 m/3600 sec=4.167 m/s
When a basketball player jumps to make a shot, _____.
Answer:
i would like some more explanation i dont understand the question enough
Explanation:
Answer:
Its D.
Explanation:
"When a basketball player jumps to make a shot, _____.""A:the forces on the player’s feet and on the floor are both in the upward direction B:the action-reaction forces are unequal because they act on different objects C:the force with which he jumps is equal to the force with which he shoots the ball D:the downward force on the floor is equal to the upward force on his feet "the floor is flat so it wont be a bc the shoes or not flat and its not b bc how u saypost to jump up uk and its not c bc u need to jump u cant just hit your shot when u jump up u gotta make sure u aimed for the shot soExplain what the interviewer meant when he said that genetic mutations are like misprints in a book.
Answer:
A publisher can misprint a book in several different ways. The publisher can miss words, make spelling errors, mix up paragraphs, or delete some text entirely. With such errors, the text will be inaccurate, and people reading that part will get confused. Mutations in genes happen similarly. At times, parts of the gene may change entirely, leading to altered products. There are many types of gene mutations, but all types of mutations can potentially affect the cell and its function.
Explanation:
Answer for plato so you might want to change it.
How many minutes are in 240 days?
Answer:
Hi there!
Your answer is;
345,600 mins per 240 days
Explanation:
First, start small
How many minutes are in one hour?
60mins per 1 hr
How many minutes per one day?
60 × 24= 1440
1440 mins per 1 day
How many minutes per 240 days?
1440× 240= 345600
345,600 mins per 240 days
Hope this helps
If the acceleration of a truck over a given time interval is zero, how does the instantaneous velocity of that truck at any instant during that interval compare to its average velocity over that interval.
Answer:
B
Explanation:
The instantaneous velocity of the truck at any instant during the interval Δt will be equal to the average velocity of the truck over the interval Δt.
It is given that If the acceleration of a truck over a given time interval is zero, how does the instantaneous velocity of that truck at any instant during that interval compare to its average velocity over that interval.
What is instantaneous velocity?
The velocity of an object at instant time
The acceleration of the truck is
a=0m/s^2
By using the definition of the linear acceleration, the acceleration of the truck in a time interval
Δt can be expressed as:
a=Δv/Δt
By given a=0
0=Δv/Δt
Δv=0
Therefore, the velocity of the truck at each instant during the time interval Δt will be the same.
To learn more on instantaneous velocity click here: https://brainly.com/question/5662730
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What is measured by the amount of time a muscle group can sustain a contraction? A. Muscular endurance B. Muscular strength C. Cardiovascular fitness. D. All of the above
Answer:
A. Muscular endurance
Explanation:
Muscular endurance is measured by the amount of time a muscle group can sustain a contraction.
Answer: muscular endurance
Explanation:
i did the test
Balanced forces acting on an object
O Always change the object's motion.
O Sometimes change the object's motion.
O Never change the object's motion.
O Are not related to motion.
Answer:
Balanced forces do not change the motion of an object. The motion of an object will not change if the forces pushing or pulling the object are balanced. An object that is sitting still will stay still if the forces acting on it are balanced
Explanation:
When two forces acting on an object are equal in size but act in opposite directions, we say that they are balanced forces . If the forces on an object are balanced (or if there are no forces acting on it), this is what happens: ... a moving object continues to move at the same speed and in the same direction.
Look at the picture can someone pls help me By the way this class his career exploration’s
Answer:m
Ramiro: Technology
Bradford: Education
Dinah: Agriculture
Zella: Architecture
Percy: Business
Explanation:
What is the displacement of the iguana between 0s and 5s?
Answer: the displacement is 8m and the distance traveled is also 8 meters
Explanation:
It travels from -2 to 6, a difference of positive 8, and since that was its initial starting point, displacement is 8m, distance traveled also happens to be 8m
Answer:
8 and 8 (No decimals needed) See attached! :)
Explanation:
A gas has a pressure of 0.470 atm at 60.0°C. What is the pressure at standard temperature? Round your answer to the nearest thousandth
Answer:
P2=0.385atmExplanation:
step one:
Given that the temperature T1= 60 Celcius
we can convert this to kelvin by adding 273k to 60 Celcius
we have T1= 333k
pressure P1= 0.470 atm
step two:
we know that the standard temperature is T2= 273K
Applying the temperature and pressure relationship we have
P1/T1=P2/T2
substituting our given data we have
0.47/333=P2/273
cross multiply we have
P2= (0.47*273)/333
P2= 128.31/333
P2=0.385 atm
Room temperature air has a density of 1.2 g/cm3. A balloon filled with hydrogen has a density of 0.082 g/cm3, and a balloon filled with carbon dioxide has a density of 1.9 g/cm3. Predict what would happen if both balloons were dropped.
Explanation:
If both the balloons were dropped so the balloon filled with hydrogen had will rise up in the air because the density of hydrogen is less as compared to the density of air and the balloon filled with carbon dioxide will start to go down/sink, as the density of carbon dioxide is greater than air.
You are in a car moving forward at 12 m/s. You throw a ball in the direction the car is moving. From your point of view, what does the ball do? what does the ball do from someone standing on the side of the roads view?
Answer: it goes the same speed as the car
Explanation:
The conversion of solar energy into electricity accurs when electromagnetic waves strike photovoltaic cells (PV). The photons of the
electromagnetic waves produce electricity by doing what in this process?
Answer:
sunlight
Explanation:
Answer:
Solar-powered photovoltaic (PV) panels convert the sun's rays into electricity by exciting electrons in silicon cells using the photons of light from the sun. This electricity can then be used to supply renewable energy to your home or business.
Explanation:
photovoltaic cell
A photovoltaic cell, commonly called a solar cell or PV, is the technology used to convert solar energy directly into electrical power. A photovoltaic cell is a nonmechanical device usually made from silicon alloys.
Lexy throws a dart with an initial velocity of 25 m/s at an angle of 60° relative to the ground. What is the approximate vertical component of the initial velocity?
0.5 m/s
0.87 m/s
12.5 m/s
21.7 m/s
Answer:
Option D: 21.7 m/s
Explanation:
We are given;
Initial velocity; u = 25 m/s
Launch Angle; θ = 60°
In projectile motion, the component of velocity vertically and horizontally are;
Vertical component; v = u sin θ
Horizontal component; v = u cos θ
Now, we want to find the approximate vertical component of the initial velocity.
Thus;
v = u sin θ
v = 25 sin 60
v = 25 × 0.866
v = 21.65 m/s ≈ 21.7 m/s
I took the test and got 21.7 m/s correct i am glad to help anytime.
convert 450km/h to nm/ps. show procedure :)
An egg is dropped from a building that is 61 m high. What is the velocity when it hits the ground and how long did it take?
Answer:
let me solve dis wait small
Why might a scientist use a physical model of a plant cell instead of studying
a cell directly?
A. A model can be used for things that are too simple to study
directly
B. A model can be used for things that are too large to study directly.
C. A model can be used for things that are too small to see clearly.
D. A model can be used for things that are too hot to handle easily.
Answer: I think it’s C.
Explanation:
The correct answer is C
Scientific Models are lay down processes or ideas toward achieving a specific goal. It can be mathematical in nature, or conceptual representation.
In most cases, scientific model are employed for complex findings or experiments. In this scenario, the plant cell is complex to study in the sense that the cells can not be seen with our naked eyes.
Therefore, the scientist will use a physical model of a plant cell instead of studying a cell directly because a model can be used for things that are too small to see clearly.
The correct answer is C
Learn more here : https://brainly.com/question/17684997
Which of these scientists had the greatest contribution to early microscopy?
A.)They all made discoveries using optical telescopes.
B.)They invented optical microscopes and telescopes so they could make discoveries.
C.)They all made discoveries based using instruments that optical technology.
D.)They all made discoveries using optical microscopes.
Answer:
b
Explanation:
I think im not really sure tho
Answer: A
Explanation:
The greatest contribution in early microscopy came from Antonie van Leeuwenhoek of Holland. In 1676, Van Leeuwenhoek, he used his handcrafted microscope that was able to magnify up to 270 times.
