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
True or false: it would take 100 years on a space shuttle to reach the closest galaxy
what is known physical quantity
Answer:
those quantity which are measured and expressed on mathematical process is called physical quantity
An Internet connection transfers 32 kilobytes per second. How many bytes are being transferred every second?
Answer:
32,000
Explanation:
There are 1,000 bytes in each kilobyte, so therefore 32,000 bytes are transferred each second.
What is the correct definition of speed?
A. time (hours or seconds)
B. time per distance (hours per mile or seconds per meter)
C. distance per time (miles per hour or meters per second)
Answer:
C
Explanation:
The correct definition is distance / time, although teachers like to mix you up sometimes. A question like "How many minutes per mile does it take to go 3miles in 20 minutes?" In this question, the units are upside down.
The standard answer is what is the rate of speed when when 3 miles are covered in 2 hours.
Here the answer is 3/2 = 1.5 miles / hour which is the standard way of writing speed or rate. distance / time.
motorcycle starting from rest cover 200 metre distance in 6 second calculate final velocity and acceleration of the motorcycle
A man is inside an airplane and walking toward the back of the plane at 7 m/s. The plane is flying West at 245 m/s. What is the speed and direction of the plane relative to the man?
7 m/s East
238 m/s, East
252 m/s West
238 m/s, West
Answer:
7 m/s East
Explanation:
The speed of the man relative to the plane is given as 7 m/s. Given that he's walking in the corridor of the plane, this is his speed relative to the plane. Since he's moving to the back of the plane, and the aircraft is headed to west, the man's direction relative to the plane is East.
What is a primary source?
A.A textbook that explains a wide range of science topics
B.A technical article written by an experimenter
C.A newspaper article about a recent discovery
D.A summary of research written for an average reader
Answer:
Explanation:
B
A primary source is one that is written by the person who lived through an advenure or is one doing the action and recording it.
In this case, the answer is B.
Most frequently, for a historian, a primary source is something like a diary or a bunch of letter written by someone experiencing something.
It cannot be about someone else's work. Not C or D
A textbook is not the answer either. It is a bulky summary of scientific, or other kind of thought.
the science building is 5.25 m tall a. How many decimeters is it? b. How many millimeter is it? *show work*
Answer:
5.25m to 52.5 Decimeters (10x)
5.25m to 5250 Millimeters (1000x)
Which is the best estimate for the mass of a typical lineman on a high school football team
1. 100,000 g
2. 100,000 kg
3. 100,000 mg
We have that the best estimate for the mass of a typical lineman on a high school football team is
[tex]100,000 g=100kg[/tex]
From the options
1. 100,000 g
2. 100,000 kg
3. 100,000 mg
Generally
A Typical lineman cannot be as small as
[tex]100000mg=0.1kg=100g[/tex]
A Typical linesman cannot be as massive as
[tex]100,000kg[/tex] as that is unrealistic
With the Average Mass of A Typical linesman can be
[tex]100,000 g=100kg[/tex]
In conclusion
The best estimate for the mass of a typical lineman on a high school football team is
[tex]100,000 g=100kg[/tex]
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How many megabytes does a 30-gigabyte hard drive hold
Answer:
30,000
Explanation:
1 gig is 1000 megabytes
if the light is both wave and particle ..
then when light is said to be wave and when it is said to be particle ?
Answer:
Consider electrons incident on a Young's double slit
If one slit is covered, the electrons will form a maximum, on the screen, as if they were particles incident on the screen
If both slits are open, the pattern formed on the screen will be the same as if a wave were incident on the screen, even tho electrons are slowed to the point that only 1 electron is incident on the screen at one time.
That means that the electron interferes with itself to create the interference pattern on the screen, and there is no way to determine which slit the electron went thru without destroying the interference pattern.
what do you mean by Spin quantum number?
Answer:
In atomic physics, the spin quantum number is a quantum number (designated ms) which describes the intrinsic angular momentum (or spin angular momentum, or simply spin) of an electron or other particle.
Newton's Law of Inertia states that ________.
Answer: It states that an object in motion will stay in motion, and an object at rest will stay at rest unless acted upon by an unbalanced force.
Explanation:
hope i helped
Answer: A object that is currently in motion will stay at motion. The law of interia is also known as Newton's first law of motion.
Explanation:
Alvin and Theodore race across a parking lot 451 cm long. Alvin travels at 19.28 cm/s and Theodore at 12 cm/s. When the Alvin crosses the finish line, how far behind is Theodore?
Theodore is 170 centimeters from the finish line when Alvin crosses it.
The total distance is 451 cm, so we can find the time that takes Alvin to crosses the finish line as follows:
[tex] v_{a} = \frac{x}{t} [/tex] (1)
Where:
[tex] v_{a}[/tex]: is the speed of Alvin = 19.28 cm/s
x: is the total distance = 451 cm
t: is the time that takes Alvin to crosses the finish line =?
By solving equation (1) for t, we have:
[tex]t = \frac{x}{v} = \frac{451 cm}{19.28 cm/s} = 23.4 s[/tex]
Now, after 23.4 seconds have elapsed, Theorode has traveled the following distance ([tex]x_{t}[/tex]):
[tex] x_{t} = v_{t}*t [/tex]
Where:
[tex]v_{t}[/tex]: is the speed of Theodore = 12 cm/s
[tex] x_{t} = v_{t}*t = 12 cm/s*23.4 s = 281 cm [/tex]
The distance (d) that Theodore needs to travel to cross the finish line is:
[tex]d = x - x_{t} = 451 cm - 281 cm = 170 cm[/tex]
Therefore, Theodore is 170 centimeters from the finish line when Alvin crosses it.
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Which of the following speeds is greatest? (2.54 cm = 1.00 in.)
O 10 km/h
O 10 m/s
O 10 ft/s
O 10 mi/h
O 10 yd/s
Answer:
Hi, There!
O 10 m/s
O 10 yd/s
------------------------------------------------------------------------------------------------------------------
Have a great day!
When converting all the given speeds to km/h and after comparing them, we have that the greatest is option 2: 10 m/s.
To find which of the given speeds is greatest, we need to convert all the units to km/h so we can compare the values.
Option 1. 10 km/hOption 2. 10 m/s to km/h[tex]v = 10 \frac{m}{s}*\frac{1 km}{1000 m}*\frac{3600 s}{1 h} = 36 km/h[/tex]
Option 3. 10 ft/s to km/h[tex]v = 10 \frac{ft}{s}*\frac{1 km}{3280.8 ft}*\frac{3600 s}{1 h} = 11.0 km/h[/tex]
Option 4. 10 mi/h to km/h[tex]v = 10 \frac{mi}{h}*\frac{1 km}{0.6214 mi} = 16.1 km/h[/tex]
Option 5. 10 yd/s to km/h[tex]v = 10 \frac{yd}{s}*\frac{1 km}{1093.6 yd}*\frac{3600 s}{1 h} = 32.9 km/h[/tex]
Therefore, the greatest speed is option 2: 10 m/s.
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A car has a steady speed 8m/s
How far does the car travel in the 8s
Answer:
64 m
Explanation:
use formula velocity= displacement / time
[tex]\\ \rm\longmapsto Distance=Speed\times Time[/tex]
[tex]\\ \rm\longmapsto Distance=8(8)[/tex]
[tex]\\ \rm\longmapsto Distance=64m[/tex]
A dog runs 20 m east and then 35 m west in 12 seconds.
What is the dog speed? What is the dogs velocity?
Answer: Dog's speed = (20 + 35) /12 = 4.583 m/s
Dog's velocity = (20-35)/12 = -1.25 m/s
Explanation: Speed is a scalar quantity so we don't care about direction which means we add the magnitude of both the directions i.e. east and west.
About the velocity, it's a vector quantity. So, we must be very careful with the directions and signs. In cartesian coordinates system, we generally take the right side of origin as the positive x-axis and the left side of origin as the negative x-axis. So, considering the same fact, we consider east as positive side and west as the negative side.
Therefore, when we add 20m + (-35m), we get = -15m and you already have the time period of 12 s.
Using the graph above determine the change in velocity between 0.0 s and 4.0 s.
- 1.0 m/s
1.0 m/s
-8.0 m/s
- 16 m/s
Brainliest if answered correctly! Will be reported if you leave spam or links. Only have to answer at least 2 of the words.
Complete the following worksheet. Use the definitions below to fill in the worksheet. Write a sentence that uses the word in context as well. For example, if my word was "science", the sentence "Today I did science." would be unacceptable. Your sentence should demonstrate that you understand what the word means.
Here are the words you have to use in a sentence:
Science
Testable Question
Inference
Data
Hypothesis
Procedure
Conclusion
Evidence
Answer:
Multiple Solutions Below:
Explanation:
In the carrier of being a scientist, they often look at scientific data, then they use that data to make a hypothesis for their experiment.
Science is an interesting field that requires a long list of procedures to ensure that everyone is safe, and that it is done in an orderly fashion.
My friends hypothesize about the idea how the badger knows how to build a dam.
At a crime scene, a CSI investigates a substance on the ground, she finds a testable question and ponders to herself about what the substance is and goes to her lab.
In English class, things are not often in bold letters on what they mean, so we have to make an inference about the text to try and decipher what they mean.
Finally,
Science is one of four main subjects taught in school from fifth to twelfth grade, and beyond.
Hope this helps, and I hope it gives you multiple things to pick as the answer! Have a good day!
What phrase describes a scientific law
I just got asked a question about quantum entanglement. Can someone please give me a basic understandable of what it is
Which of the following is an example of a chemical property? the flammability of hydrogen the boiling point of ethanol the melting point of gold the density of neon gas please help for 100 points
Answer:
flammability of hydrogen
Explanation:
Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust.
7. A car travels a certain distance with a speed of
50 km/h and returns with a speed of 40 km/h.
Calculate the average speed
Plz help
The speed of sound in air is about 330m/s. How long will it take to travel 1km answer in seconds to one decimal point
Answer:
3.03
Explanation:
time=distance/speed
1km=1000m
1000÷330
=3.030
Ice floats on water.
Answer:
Yeah ice floats on water.
Observation
Example in those areas were ice is found like Antarctica ice is found on top of water.
Name:
Mellisayang
Kinematics practice problems #1
1
A high school athlete runs 1.00 x 10 m in 12.20 s. What is the velocity in m/s and km/h?
Answer:
[tex]velocity = \frac{distance}{time} \\ velocity = \frac{10}{12.20} \\ velocity = \frac{50}{61} \\ multiply \: by \: 3.6u \: can \: convert \: to \: km \: per \: hour \\ velocity = \frac{50}{61} \times 3.6 \\ v = \frac{180}{61} \\ v = 2.95 \frac{km}{h} \\ thank \: you[/tex]
Blaise is driving a car that is traveling 6.03 m/s and accelerates uniformly at 2.5 m/s² to reach a speed of 12.9 m/s. How long does it take for this acceleration to occur?
It would take 0.3639 seconds for this acceleration to occur.
Given the following data:
Initial speed, U = 6.03 m/sFinal speed, V = 12.9 m/sAcceleration, a = [tex]2.5 \;m/s^2[/tex]To find how long it takes for this acceleration to occur, we would use the first equation of motion.
Mathematically, the first equation of motion is given by the formula;
[tex]V = U + at[/tex]
Substituting the values into the equation, we have;
[tex]12.9 = 6.03 + 2.5t\\\\2.5t = 12.9 - 6.03\\\\2.5t = 6.87\\\\t = \frac{2.5}{6.87}[/tex]
Time, t = 0.3639 seconds
Therefore, it would take 0.3639 seconds for this acceleration to occur.
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Which of the following objects has the greatest inertia?
5.0 kg object moving 5.0 m/s
15 kg object moving at 1.0 m/s
20.0 kg object at rest
10.0 kg object at rest
Last one has the greatest inertia
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Q23 In Hindu chronology, the longest time measure is a para. One para equals 311 040 000 000 000 years. Calculate this value in megayears, hours and in seconds. Write your answers in scientific notation.
The conversion in megayears, hours and seconds are :
[tex]1 \: para \: = \: 3.11 \times {10}^{8} \: megayears[/tex]
[tex]1 \: para \: = \: 2.72 \times {10}^{18} \: hours[/tex]
[tex]1 \: para \: = \: 9.81 \times {10}^{21} \: seconds[/tex]
Given that :
1 para = 311040000000000 years
1 mega year = 1 million years :
311040000000000 years expressed in mega years will be :
Let : number of mega years = p
1 mega year = 1,000,000 years
p = 311040000000000 years
Cross multiply :
311040000000000 × 1 = 1,000,000 × p
311040000000000 = 1000000p
p = 311040000000000 / 1000000
p = 311040000 mega years
p = 3.1104 × 10^8 mega years
[tex]1 \: para \: = \: 3.11 \times {10}^{8} \: megayears[/tex]
In hours :
In hours : 8760 hour = 1 year
Let : number of hours = p
1 year = 8760 hours
311040000000000 years = p
Cross multiply :
p = 8760 × 311040000000000
p = 2724710400000000000
p = 2.72 × 10^18 hours
[tex]1 \: para \: = \: 2.72 \times {10}^{18} \: hours[/tex]
In seconds :
31536000 seconds = 1 year
Let : number of hours = p
1 year = 31536000 seconds
311040000000000 years = p
Cross multiply :
p = 31536000 × 311040000000000
p = 9808957440000000000000
p = 9.81 × 10^21 hours
[tex]1 \: para \: = \: 9.81 \times {10}^{21} \: seconds[/tex]
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Part G
Based on your observation of the Tracker videos and the calculations of average vertical velocity and acceleration,
• Why do you think the vertical acceleration values are not equal to the theoretical acceleration due to gravity, -9.81 meters/second?
• What can you say about your earlier prediction about which ball will land first? If your hypothesis was wrong, can you propose an alternate
rationale for the observed results?
Answer: I think the vertical acceleration values are not equal to the theoretical acceleration due to gravity, -9.81 meters/second2 due to the gravity force and maybe the drag due to air resistance.
Explanation: About my earlier prediction about which ball will land first, I can say that my hypothesis was right, but not quite because I calculated the average vertical acceleration, where the time period is t = 0.10 second to t = 1.00 second, the results were different. If the result were maybe right or close to the I would have said that my hypothesis was correct.
