Answer:
the benefit is that they can see and experiment on the model but some times the model isn't accurate resulting in immediate failure
im only 13 sorry if this is wrong i tried.
What is the meaning of the universe?
Answer:
Explanation:
All existing matter and space considered as a whole; the cosmos. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies; it has been expanding since its creation in the Big Bang about 13 billion years ago.
Late in the paleozoic era the supercontient pangaea formed the climate in the center of pangea was probably ? A.) Extremely cold ,polar climate B.) Hot dry desert climate C.) Wet tropical climate D.) Warm mild climate
Answer:
The answer is (B). hot dry desert climate
Explanation:
A rope is used to pull a 4.0 kg bucket of water upwards out of a deep well with an applied force 45 N. If starting from rest, what speed will the bucket have after experiencing this force for 2 seconds?
Answer:
v = 22.5 m/s
Explanation:
The speed of the bucket can be found using the following equation:
[tex] V_{f} = V_{0} + at [/tex]
Where:
[tex]V_{f}[/tex]: is the final speed =?
[tex]V_{0}[/tex]: is the initial speed = 0 (starts from rest)
a: is the acceleration
t: is the time = 2 s
We need to find the acceleration, it can be found as follows:
[tex] F = ma [/tex]
Where:
F: is the force = 45 N
m: is the mass = 4.0 kg
[tex] a = \frac{F}{m} = \frac{45 N}{4.0 kg} = 11.25 m/s^{2} [/tex]
Now, the speed is:
[tex] V_{f} = V_{0} + at = 11.25 m/s^{2}*2 s = 22.5 m/s [/tex]
Therefore, the speed that the bucket will have is 22.5 m/s.
I hope it helps you!
The results of a dart game were precise but not accurate. The accepted value of the game was the center of the dartboard. Which correctly describes the results? All of the darts hit the center of the board. Some of the darts hit the center of the board. The darts hit the same general area of the board. The darts hit very different areas of the board.
Answer:
The darts hit very different areas of the board.
Explanation:
The bullseye is the point at which darts are most accurate. There is no accuracy nor precision if the darts are neither close to the target nor to one another.
What is dart precision?The degree of similarity between several measurements is known as precision.
Even if the measurements are not exactly the right value, they are very reproducible.
Throwing darts at a dartboard can be used to demonstrate accuracy and precision.
There is precision but not accuracy if every dart lands distant from the bulls-eye but extremely closely spaced apart.
In contrast to a dart that lands far from the bulls-eye, which shows poor accuracy, a dart that hits the bulls-eye is very accurate.
Therefore, The board was struck by the darts in a variety of ways.
Learn more about dart here:
https://brainly.com/question/14288013
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what is the meaning of joule
A joule is a unit of energy.
Answer:
The work done by a force of one Newton is known as joule
Explanation:
A blue circle labeled proton and A overlaps a pink circle labeled neutron and C. The overlap is labeled B.
The Venn diagram compares protons with neutrons. Which shared property belongs in the region marked "B"?
Is negatively charged
Has mass of 1 amu
Orbits the nucleus
Is positively charged
Answer:
has mass of one amu
Explanation:
i got it right
Answer:
The answer is B.) Has mass of 1 amu
Explanation:
Neutrons have no charge so its not A or D and electrons are the things that orbit the nucleus so it not c.
Please answer the questions here in the attachment I attached below. They are all multiple choice.
Answer:
abcbc
Explanation:
An object is projected with initial speed v0 from the edge of the roof of a building that has height H. The initial velocity of the object makes an angle α0 with the horizontal. Neglect air resistance. If α0 is 90∘, so that the object is thrown straight up (but misses the roof on the way down), what is the speed v of the object just before it strikes the ground?
Answer:
Explanation:
Initial velocity u = V₀ in upward direction so it will be negative
u = - V₀
Displacement s = H . It is downwards so it will be positive
Acceleration = g ( positive as it is also downwards )
Using the formula
v² = u² + 2 g s
v² = (- V₀ )² + 2 g H
= V₀² + 2 g H .
v = √ ( V₀² + 2 g H )
A bird flies 6km east, then 4km west. Find the total distance traveled and displacement (d) after this flight.
Given :
A bird flies 6 km east, then 4 km west.
To Find :
the total distance traveled and displacement after this flight.
Solution :
a)
We know , total distance is the amount of how much ground an object has covered .
Distance = 6+4 km = 10 km .
b )
Displacement is the shortest distance from one point to another .
Now , here the object first move 6 km east then moves 4 km west .
So , his distance from the starting position is :
Displacement = 6 - 4 km = 2 km .
Hence , this is the required solution .
What conversion do you use to change 18 km to meters
Answer:
multiplication
Explanation:
multiply your distance of 18 kilometers by 1,000 to get 18,000 meters.
function of alcohol in alcohol thermometer
Alcohol is increasingly expanding with heat. Having it go up the ladder quicker than a lot of liquids would have done. It has a low freezing point, too. It's easy to dye because of the readability. I 'm sure someone will teach you about the evaporative effects of alcohol, and why they do these things. Though that's why it's used briefly in thermometers.
Answer:
Fahrenheit's first thermometer contained alcohol, which has a lower freezing point than water. ... Glass bulb thermometers work because liquids, such as water, alcohol, or mercury, expand slightly when the temperature rises. If the liquid is trapped in a narrow tube, it has nowhere to go but up. I think this may help you
what test is an aptitude test
An aptitude test is a systematic means of testing a job candidate's abilities to perform specific tasks and react to a range of different situations. The tests each have a standardised method of administration and scoring. The results are quantified and compared with all other test takers.
Answer:
Hi There!
Explanation:
An aptitude test is a systematic means of testing a job candidate’s abilities to perform specific tasks and react to a range of different situations. The tests each have a standardised method of administration and scoring, with the results quantified and compared with all other test takers.
~Your Welcome!
if the coefficient of friction is root 3 the angle of friction is
Explanation:
The coefficient of friction = tanθ,
the angle would be 30∘
Answer:
Tan¯¹ /3=60 degree
Explanation:
you know coefficient is friction is equal to tan 0 equal to square root of 3 is equal to tan of civil 20 skills equal to 60 degree
17. The weight of an object on a given planet can be found by using the formula W = mg, where W is the weight of the object measured in newtons, m is the mass of the object measured in kilograms, and g is the acceleration due to gravity on the planet measured in meters per second squared. An object on Earth has a weight of 150 newtons. If the acceleration on earth is 9.8 m/sec?, on Mercury it is 3.6, on Saturn it is 11.1 and on Jupiter it is 26, on which planet would the same object have an approximate weight of 170 newtons?
Answer:
Saturn
Explanation:
W = mg
150 N = m (9.8 m/s²)
m = 15.3 kg
W = mg
170 N = (15.3 kg) g
g = 11.1 m/s²
The planet is Saturn.
1. Why should you use scientific notation when writing big numbers?
Answer:
It helps the answer look clean. It also makes the work easier to work with.
Explanation:
Instead of writing a lot of zeros, all you have to do is add exponents to the number to show how much the decimal moved.
A coin is dropped from the top of the Tower of Pisa, 53m above the ground. What is the coin's initial velocity?
Answer:
Initial velocity U = 0
Final velocity V = 32.23 m/s
Explanation:
Given that a coin is dropped from the top of the Tower of Pisa, 53m above the ground.
What is the coin's initial velocity ?
Since the coin is dropped from the tower, the initial velocity U will be equal to zero.
Therefore, U = 0
But the final velocity V will be calculated by using the formula
V^2 = U^2 + 2gH
V^2 = 0 + 2 × 9.8 × 53
V^2 = 1038.8
V = sqrt ( 1038.8)
V = 32.23 m/s
Paul’s class investigated the effects of friction on the motion of a toy car. Using ramps with different surfaces, students determined the amount of time, in seconds (s), for the toy cars to reach the bottom of each ramp. All variables were controlled except the tested variable (independent variable). Paul's group concluded that toy cars on a sandpaper surface are fastest.
Answer:
C
Explanation:
..
Answer:The conclusion is valid for the data recorded
Explanation:
Will the pressure in glass of fruit juice be bigger or smaller than the pressure in water?
Answer:
smaller
Explanation:
Water have more evaporation
If an object is 413 Kg in mass and 640 M3. What is the density? Will It Float?
Answer:
The density will be 0.65 kg/m3
I think it won't float!! I am not sure though.
In addition to the idea that Jupiter has moons orbiting it, what other evidence did Galileo use to support Copernicus’s model and disprove Aristotle and Ptolemy?
Answer:
Venus has phases similar to the moon’s phases.
Explanation:
i hope this helped you :)
hey can anyone help me out in dis
Answer:
A) moving randomly
B) collide into each other
D) high kinetic energy
Explanation:
Gas particles move very fast (high kinetic energy) and in unpredictable directions (moving randomly). They also collide into each other.
I hope this helps! If it does, a Thanks or brainliest would be much appreciated :)
you throw a basketball straight up into the air with a speed of 24.5m/s. how long does it take to reach its highest point
Answer:
2.5 seconds.
Explanation:
Time equals speed divided by acceleration. gravitational acceleration is equal to 9.8 [tex]\frac{m}{s^{2} }[/tex]. You know that the speed is equal to 24.5 m/s, so plug those values into the equation.
24.5 / 9.8 = 2.5 seconds.
Hope this helps!
Answer: 2.5 s
Time=speed/acceleration
Gravitational Acceleration=9.8 m/s^2
Speed=24.5 m/s
Time=24.5/9.8=2.5 s
hopes this helps UwU
and if like my answer can you please mark me as brainliest please
thank you
and sorry it took so long i was trying to catch up with my missing assignments
a car drives at 88 km/h over a distance of 22 kilometers calculate in minutes the time taken for the audi to travel this distance
V=88 km/h d=22km t=? if d/t=V t=d/V t=22km/88km/h
t=0,25h
t=1500min
i hope this helps
Sal is given a sample of an unknown liquid to test in the laboratory .sal thinks the liquid might be water .which of these physical properties
A it’s color
B. It’s mass
C it’s volume
D it’s density
A ball, initially at rest, reaches a speed of 20 m/s at the bottom of the apparatus. If it takes the ball 10 seconds to reach the bottom, what is the ball’s average acceleration?
Answer:
2 m/s²
Explanation:
Given:
v₀ = 0 m/s
v = 20 m/s
t = 10 s
Find: a
a = (v − v₀) / t
a = (20 m/s − 0 m/s) / 10 s
a = 2 m/s²
Can someone help me its A,B,C,D
What’s the definition of friction
Answer:
Friction is a force that rubs on a object which then causes something within that object to happen. There are many types of friction, though.
Explanation:
brainliest? :{
A body weighs 65N.Calculate it's mass.(g=10N/kg)
Explanation:
Hey there!!
Here,
Weighs = 65n
Gravity = 10n
We know that,
weighs = mass × gravity.
65 = m × 10
[tex]m = \frac{65}{10} [/tex]
Therefore the mass is 6.5 kg.
Hope it helps...
2.(02.07 MC)
The table below shows data of sprints of animals that traveled 75 meters. At each distance marker, the animals' times were recorded. Which animal moves with non-accelerated motion? (2 points)
Time at Distance Markers
25 meters 50 meters 75 meters
Animal
Animal 1 3 seconds
4.5 seconds 5 seconds
5.25 seconds
Animal 2 4.5 seconds 5 seconds
Animal 3 3.5 seconds 7 seconds
10.5 seconds
Animal 4 5 seconds
10 seconds
13 seconds
O Animal 1
O Animal 2
O Animal 3
O Animal 4
What are the 4 categories that makes the human body
Answer:
epithelial, muscle, nervous, and connective tissues.
Explanation: