How do you find the uncertainty of a meter stick?
Thus, L =5 . 7 cm measured with a meter stick implies an uncertainty of 0.05 cm. A common rule of thumb is to take one-half the unit of the last decimal place in a measurement to obtain the uncertainty
A car starts from rest and after 10 seconds its velocity is 20 m/s. Find the acceleration and the distance travelled by it.
Answer:
a=[tex]2ms^{-2}[/tex] S=100m
Explanation:
a=?vi=0m/s
vf=20m/s
t=10s
a=[tex]\frac{vf-vi}{t}[/tex]
a=[tex]\frac{20-0}{10}[/tex]
a=2m[tex]s^{-2}[/tex]
S=?S=vit+[tex]\frac{1}{2}[/tex]a[tex]t^{2}[/tex]
S=0+[tex]\frac{1}{2}[/tex]*2*[tex](10)^{2}[/tex]
S=100m
Another 100 points time is running out this has to be correct! Correct answer gets brainiest! Hurry!
Answer:
I think it is 30km/hr ooh
please help me find the equations guys
The line at the bottom of the picture ... probably the first line on a list of choices .. is the correct equation.
Standing at the edge of a cliff 32.5m high, you do a ball. Later, you throw a second ball downward with an initial speed of 11m/s. Calculate the velocity if each of the balls when it hits the ground
Answer: The displacement of the ball
ℎ =
2 −
2
2
So, final speed of the first ball
1 = √2ℎ = √2 × 9.8 × 32.5 = 25.24
m
s
The change of it speed
∆1 = 25.24 − 0 = 25.34
m
s
The final speed of the second ball
2 = √
2 + 2ℎ = 27.53
m
s
The change of the second ball speed
∆2 = 27.53 − 11 = 16.53
m
s
Thus
∆1 > ∆2
Answer: ∆1 > ∆2
Explanation:
The final velocity of the first ball is 25.24 m/s and the final velocity of the second ball is 27.53 m/s
To calculate the final velocity of the first ball, we use the equation
v² = u² - 2gh where u = initial velocity of first ball = 0 m/s, v = final velocity of first ball, g = acceleration due to gravity = -9.8 m/s² (since it is directed downwards)and h = height of cliff = 32.5 m
Substituting the values of the variables into the equation, we have
v² = u² - 2gh
v² = (0 m/s)² - 2 × -9.8 m/s² × 32.5 m
v² = 0 m²/s² + 637 m²/s²
v² = 637 m²/s²
v = √(637 m²/s²)
v = 25.24 m/s
To find the final velocity of the second ball, we also use
v'² = u'² - 2gh where u' = initial velocity of second ball = 11 m/s, v' = final velocity of second ball, g = acceleration due to gravity = -9.8 m/s² (since it is directed downwards)and h = height of cliff = 32.5 m
Substituting the values of the variables into the equation, we have
v'² = u'² - 2gh
v'² = (11 m/s)² - 2 × -9.8 m/s² × 32.5 m
v'² = 121 m²/s² + 637 m²/s²
v'² = 758 m²/s²
v' = √(758 m²/s²)
v' = 27.53 m/s
So, the final velocity of the first ball is 25.24 m/s and the final velocity of the second ball is 27.53 m/s
Learn more about velocity of a ball here:
https://brainly.com/question/4783501
1. A car weighs 1000kg, you can push it .05 m/s2, how much force (F) are you applying
to the car? Here we use F=MA:
F= 1000 x .05
F= 50 newtons
Mass of the car (m) = 1000 Kg
Acceleration (a) = 0.05 m/s^2
Let the force we are applying to the car be F N.
By using the equation,
F = ma, we get
F = 1000×0.05 N = 50 N
Answer: We are applying 50 N force to the car in the direction of motion.
How far will Julie travel if she moves at a speed of 7 meters per second for 20 minutes?
Draw simple electrical circuit using symbols of dry cell resistor voltmeter and switch
Explanation:
I hope this really can help you...
well done friend...
A student leaves a pencil on a desk and the pencil stays in the same spot until another student picks it up. What law od motion is it?
if a blue whale weighs 200 tons what would it be on the moon?
Answer:
if no mistaken then it is 300kN
Explanation:
Using SI units (the default if a system is not specified) 200T = 200000kg as the mass of the whale, it would weigh 1960kN in 1g Earth gravity.
On the Moon, the acceleration is 0.166g, to it would weigh about 330kN.
Answer:
Explanation:
Since the mass of a whale is 200 tons on earth, and the moon has a lighter gravity compared to the earth is about 1/6 as powerful, the whale would weigh 33.33 tons with the last 3 repeating forever. so about 33 and one third ton on the moon.
This is talking about weight, which is how much it would take to lift this object, but the mass is the the same as mass isn't affected by gravity, only weight is affected by gravity.
Hope this helps!
What are the 5 advantages of NSC
Answer:
Tax saver: As a government-backed tax-saving scheme, the principal invested in NSC qualifies for tax savings under under Section 80C of the Income Tax Act up to Rs. 1.5 lakhs annually.
Investment Flexibility : You can invest as small as Rs. 100 as an initial investment with no maximum limit.
How does the distance traveled by the coin compare to its displacement after ten flips?
Answer:
To calculate displacement, simply draw a vector from your starting point to your final position and solve for the length of this line. If your starting and ending position are the same, like your circular 5K route, then your displacement is 0. In physics, displacement is represented by Δs.
Explanation:
hope helps
A batter pops a ball straight up (a) If the ball returns to the height from which it was hit 4.5 s later, what was its
initial speed? (b) Does the ball reach its maximum height 2.25s after it was hit, more than 2.25s after it was hit, or
less than 2.25s after it was hit? Explain. (c) Find the maximum height of the ball, as measured from the point
where it was hit.
Answer:
it depends on how hard and fast he hit the ball a baseballs terminal velocity, a baseball can reach a velocity of around 95mph
A human geographer would most likely study __________.
Which of the following is not an example of a study within human geography?
Answer:
A human geographer would most likely study the housing styles of the Baka people of the Congo.
The following that is not an example of a study within human geography is Political Systems.
According to the law of conservation of energy, which statement must be
true?
A. Energy that is transformed is neither destroyed nor created.
B. Energy can change only from nuclear to chemical.
C. There is only one form of energy.
D. The total energy in a system can only increase over time.
Answer:
i hope it will help you
THANK YOU
Explanation:
thank you
Complete the passage to describe velocity vs time graphs.
A velocity vs time graph is a graph that shows the relationship between the velocity of an object over time.
is plotted on the x-axis in seconds, and the
of the object is plotted on the y-axis in
meters per second.
Intro
ty
Done
Answer:
Explanation:
velocity unit t is m/s and the slope indicates the acceleration
Answer: time and volocity
Explanation:
you run from your house to a friend's house that 3 miles away. you then walk home. A. What distance did you travel? B. What was the displacement for the entire trip?
Tại cùng một nơi trên trái đất hai con lắc đơn có chiều dài lần lượt là L1 và chiều dài L2 .Trong cùng một khoảng thời gian ∆t con lắc có chiều dài L1 thực hiên 24 dao động toàn phần và con lắc có chiều dài L2 thực hiện được 27 dao động toàn phần. Hỏi vẫn trong khoảng thời gian ∆t nói trên con lắc có chiều dài L3=|0, 25L2 - 1/9L1| thực hiện được số dao động toàn phần gần giá trị nào nhất ?
A. 60 B. 50 C. 70 D. 80
Answer:
what do this even say
Explanation:
The motion of the particles is most orderly in
Answer:
Solids
Explanation:
Particles are most orderly in solids.
How many moons are represented
Answer:
Earth has one moon, and there are more than 200 moons in our solar system. Most of the major planets – all except Mercury and Venus – have moons. Pluto and some other dwarf planets, as well as many asteroids, also have small moons.
Hope it will help you !Q- Do car brakes work as well in the wet?
they work less effectively due to the lack of friction on the road when it is wet
pls mark brainliest
Answer: Not really
Explanation: When it's wet, and you slam on the brakes, there's not enough friction with the ground for it to not go spiraling out of control.
The width of the same paper (given in question1) is measured 3 times using a ruler marked with
1mm increments to give values of w= 210 mm, 211 mm, 208 mm for three measurements. What
value should be used for w? for Sw? Express your answer in the form w + Sw. Provide all steps of
your work in the provided box
Answer:
60
Explanation:
A baseball player hits a ball out of the park and runs the bases which are 90 ft apart. What are the distance and displacement traveled?
Answer:
The distance is [tex]360[/tex] feet, and the displacement is [tex]0[/tex].
Explanation:
A baseball player hits a ball out of the park and runs the bases which are [tex]90[/tex] feet apart.
Distance [tex]=4(90)[/tex]
[tex]= 360[/tex] feet.
The displacement is [tex]0[/tex] since the player begins and ends at home plate.
Learn more about distance, refer :
https://brainly.in/question/1479109?tbs_match=1
Q. What is weak nuclear force?
Weak interaction, also called weak force or weak nuclear force, a fundamental force of nature that underlies some forms of radioactivity, governs the decay of unstable subatomic particles such as mesons, and initiates the nuclear fusion reaction that fuels the Sun.
Differentiate the following functions with respect to x x³ + 5x² - 2
Answer:
The answer is 3x² + 10x
Explanation:
d/dx (x³ + 5x² - 2)
= d/dx (x³) + 5 d/dx (x²) - d/dx (2)
= 3x² + 5(2x) - 0
= 3x² + 10x
Thus, The answer is 3x² + 10x
-TheUnknownScientist
Answer:
3x² + 10 x
Explanation:
hope it's helpful
The 2 Vectors shown in the image below are combined.What is the resultant quantity?
Option A is correct. The resultant quantity is 50m/s to the right.
Vector quantities are quantities that have both magnitude and direction.
From the diagram shown, we can see that 100m/s vector moves in the positive x-direction, this means that the of magnitude the vector is +100m/s.
For the vector 50m/s, we can see that it is moving in the negative x-direction, this shows that the magnitude of the 50m/s vector is -50m/s.
Resultant speed = +100 - 50
Resultant speed = +50m/s
Since the resultant speed is a positive value, this mean that the resultant quantity will be moving towards the right.
Hence the correct option will be 50m/s to the right.
Learn more here: https://brainly.com/question/21444366
A class is performing an experiment to keep an ice cube solid as long as possible.
Which student's actions could be a source of error in this experiment?
A. Carey put the ice cube in cold water and recorded the temperature
every 2 minutes as the ice cube melted.
B. Angelina waited until the next day to observe the ice cube and
record how long it took to melt.
C. Jody outlined the ice cube to measure it before it started to melt.
D. Jerrie wrapped the ice cube loosely in several layers of cotton and
aluminum foil.
Answer:
B
Explanation:
If Angelina waited until the next day to observe and record how long the ice cube took to melt she wouldn't be able to know how long the ice cube took to melt because she wasn't there while the ice cube was melting.
A hard drive has 250 gigabytes of storage?
How much does it have measured:
a. In terabytes?
b. In microbytes?
Which is an example of an exothermic process?
A.
splitting of water molecule
B.
formation of glucose from carbon dioxide
C.
condensation of steam
D.
cooking of an egg
E.
evaporation of water
Answer:
i think answer is c
Explanation:
as formation water from steam condensed release heat
else all need heat
Peter drives 150 meters in 18
seconds. Assuming he does not speed
up or slow down, calculate his speed.
[tex] \large \mathfrak{Solution : }[/tex]
Distance = 150 meters
Time = 18 seconds
Speed :
[tex] \dfrac{distance}{time} [/tex][tex] \dfrac{150}{18} [/tex][tex] \dfrac{25}{3} [/tex][tex]8.33 \: \: m/s[/tex]A ball rolling on grass has more friction than a ball rolling on tile
Answer:
When you slide an object there is less friction than when you roll it. an object's acceleration (change in speed) depends on the mass of the object and the amount of force applied on it. an object at rest stays at rest unless a force acts on it. ... A ball rolling on grass has more friction than a ball rolling on tile.
Answer:
TrueExplanation:
When you slide an object there is less friction than when you roll it. an object's acceleration (change in speed) depends on the mass of the object and the amount of force applied on it. an object at rest stays at rest unless a force acts on it.
