Answer:
Physical activity or exercise can improve your health and reduce the risk of developing several diseases like type 2 diabetes, cancer and cardiovascular disease. Physical activity and exercise can have immediate and long-term health benefits. Most importantly, regular activity can improve your quality of life.
Explanation:
hope it is helpful for you keep smilingdifference between uniform velocity and variable velocity
Explanation:
when a body covers equal distance in equal interval of timein a specific direction it is said to have uniform velocity . when a body covers unequal distance in equal interval of time in a specified direction , it is said to have variable velocity .
A baseball is thrown a distance of 20 meters. What is its
seconds to cover the distance?
speed if it takes 0.5
Answer:
I want to say 10 seconds but im not 1000% sure
Answer:
Average speed= distance traveled/ time taken.
Explanation:
You shouldn't need any formula, just use common sense. You dummy. It goes 20m 10h half a sec. DUH!!!
Below you will see diagrams showing a trip taken by Fred and a trip taken by Frank. For each person, find their distance, displacement, average speed, and average velocity from A to B. Each square is 10 meters wide, and use words like north, south, east, and west for direction.
The first thing Fred did was go south for 4 seconds. If he wanted to cut his average speed in half, how long should that southward motion last (assuming the other two motions happen in the same time as shown)? Explain your reasoning.
Would this amount of wait-time also have halved his average velocity?
Part A
The completed table of values of the motion of Fred and Frank are;
[tex]\begin{array}{|l|c|c|}&\mathbf{Fred's \ Trip}&\mathbf{Frank's \ Trip}\\\mathbf{Distance}&150 \, m&120 \, m\\\mathbf{Displacement}&30 \, m&50 \, m\\\mathbf{Average \ Speed}&15 \, m/s&10 \, m/s\\\mathbf{Average \ Velocity}&3 \ m/s&4.1 \overline 6 \, m/s\end{array}\right][/tex]
Part B
The time the southward motion should last is 14 seconds
The reason the above values are correct is as follows;
The total distance is given by summing the length of the sides of the square that lay along the path
Known parameters:
For Fred's Trip, we have;
Distance = 60 meters South + 30 meters East + 60 meters north = 150 meters The total distance = 150 meters
Required:
The displacement = 30 meters East
Average speed = Total distance/(Total time)
Total time = 4 sec + 3 sec + 3 sec = 10 sec
Average speed = 150 m/10 sec = 15 m/s
Average velocity = Displacement/Total time
Average velocity = 30 m/10 sec = 3 m/s
Known parameters:
For Frank's Trip, we have;
Distance = 30 meters North + 60 meters East + 30 meters south = 120 meters
The total distance of Frank's trip = 120 meters
Required:
The displacement = 50 meters East
Average speed = Total distance/(Total time)
Total time = 5 sec + 5 sec + 2 sec = 12 sec
Average speed = 120 m/12 sec = 10 m/s
Average velocity = Displacement/Total time
Average velocity = 50 m/12 sec = 4.1[tex]\overline 6[/tex] m/s
Therefore, we have;
[tex]\begin{array}{|l|c|c|}&\mathbf{Fred's \ Trip}&\mathbf{Frank's \ Trip}\\\mathbf{Distance}&150 \, m&120 \, m\\\mathbf{Displacement}&30 \, m&50 \, m\\\mathbf{Average \ Speed}&15 \, m/s&10 \, m/s\\\mathbf{Average \ Velocity}&3 \ m/s&4.1 \overline 6 \, m/s\end{array}\right][/tex]
To reduce his speed in half, we have;
New average speed, s₂ = s₁/2
∴ s₂ = (15 m/s)/2 = 7.5 m/s
Let x represent the time for the southward motion, we have;
(150)/(6 + x) = 7.5
(6 + x) × 7.5 = 150
x = (150 - 7.5×6)/7.5 = 14
Therefore, the time for the southward motion should last for 14 seconds
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A cheetah has an average velocity of 70 mph. If a cheetah was chasing a water Buffalo for 23 miles, how long was the cheetah chasing its prey
Answer:
t=distance ÷ speed
23÷70
t=0.33 sec
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
Pls help (look at picture below)
A. Controlled Variable.
I hope this helps!
Lara has four samples of substances:
Sample A: 5 g of salt
Sample B: 8 g of sand
Sample C: 8 g of sugar
Sample D: 5 g of sugar
Which of the following samples have the same solubility in water?
Sample A and Sample C
Sample A and Sample D
Sample C and Sample B
Sample C and Sample D
Answer:
A and C, A and D, C and D
Explanation:
they are soluble in water
This is probaly the first and only real question ive asked and will ask but can someone help me plzzz!
Answer:
open the dictionary/glossary. it will give you the definitions of the words there.
Explanation:
Answer:
i think it goes like this
Explanation:
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
hope it helps
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what can the magnetic field be used for
Answer:
the magnetic field can be used to make electricity
Explanation:
Moving a magnet around a coil of wire, or moving a coil of wire around a magnet, pushes the electrons in the wire and creates an electrical current. Electricity generators essentially convert kinetic energy (the energy of motion) into electrical energy
Some students collect some drops of water from a leaking tap.
The students measure the volume of the water they collect.
State the term for the equipment that is suitable for measuring the volume accurately.
Explanation:
The concept of temperature has evolved from the common concepts of hot and cold. Human perception of what feels hot or cold is a relative one. For example, if you place one hand in hot water and the other in cold water, and then place both hands in tepid water, the tepid water will feel cool to the hand that was in hot water, and warm to the one that was in cold water. The scientific definition of temperature is less ambiguous than your senses of hot and cold. Temperature is operationally defined to be what we measure with a thermometer. (Many physical quantities are defined solely in terms of how they are measured. We shall see later how temperature is related to the kinetic energies of atoms and molecules, a more physical explanation.) Two accurate thermometers, one placed in hot water and the other in cold water, will show the hot water to have a higher temperature. If they are then placed in the tepid water, both will give identical readings (within measurement uncertainties). In this section, we discuss temperature, its measurement by thermometers, and its relationship to thermal equilibrium. Again, temperature is the quantity measured by a thermometer.
which solutions do you think are:
a. acidic in nature?
b. basic in nature?
[A] Acidic in nature:-
Lime juiceHumans BloodVinegar[B] Basic in nature:-
Lime WaterAntacidButtermilkExplanation:
a) The solutions can be classified as basic or acidic depending on their hydrogen ion concentration relative to pure water. If the value of pH is below seven, then the solution is acidic and if the pH is greater than seven then the solution is said to be basic.
b) Basic in nature means when a substance is soapy and bitter in taste and when a subtance changes red litmus blue. This nature of substance is basic.
HOPE THIS HELPS YOU.....The angle of reflection is equal to the angle of incidence……….. [ ] A) always B) sometimes C) never D) under special conditions
Answer:
A) alwaysthis is ur answer
The small bunny exerts a force of 15 Newtons as it hops a distance of 3 meters to pass the large rabbit. How much work did the small bunny do?
45 Joules
0.2 Joules
18 Joules
5 Joules
Answer:
W = F × d
W = 15 × 3
W = 45 Joules
what is known physical quantity
Answer:
those quantity which are measured and expressed on mathematical process is called physical quantity
Calculate the frequency of a vibrating body if it vibrates 400 times in 20 seconds. Identify the category of sound it belongs to.(sonic sound/ ultrasound/ infra sound)
Answer:
F+20Hz
Explanation:
A net force of 153 N accelerates a 22.0 kg mass. What is the resulting acceleration?
The resulting acceleration is 6.95 m/s².
Net force (F) = 153 N
Mass (m) = 22.0 kg
To find the resulting acceleration (a), we can use Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. The equation can be written as:
F = m * a
Rearranging the equation, we have:
a = F / m
Substituting the given values, we get:
a = 153 N / 22.0 kg
Evaluating the expression, we find:
a ≈ 6.95 m/s²
Therefore, the resulting acceleration is approximately 6.95 m/s².
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Q1) A spring stretch 2cm When 2cm When a IO n wright hangs
one it. How far will it stretch with a weight of 20 n
Answer:
1cm=100m
Explanation:
2cm=?×
2cm×100
-------------
1Cm
=200m
what material of mass 39g,has a volume of 5cm^3
help pls asap , i do not get it , I’ll name you the brainliest
We know, velocity = Displacement/Time
Therefore, Displacement= Velocity×Time
Here, displacement= 20×5 m = 100 m
Answer: 100 m
4.
Which of the following statement is correct
The density of an object does not remains same if we take small quantity of that substance.
The density of an object remains same irrespective of its shape, size and quantity.
The density of an object does not remains same irrespective of its shape and size.
The density of an object remains same only if its shape and size remains same.
The density of an object remains same irrespective of its shape, size and quantity.
Explanation:
Density is an intensive property. This means that regardless of the object's shape, size, or quantity, the density of that substance will always be the same. Even if you cut the object into a million pieces, they would still each have the same density. It is because density in an intensive property of matter.
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quanto e 384400 convertido em ua
Answer:
Eu não sei
Explanation:
write some example of unit
Answer:
The definition of a unit is a fixed standard amount or a single person, group, thing or number. An example of a unit is a single apartment in an apartment building. ... (sciences) A standard measure of a quantity. The centimetre is a unit of length.
Answer:
Km, m, s, m/s, m/s^-2
Explanation:
Well there is a lot more
which diagram shows the correct path of light through the glass
Explanation:
When light travels from a rarer to a denser medium, it bends towards the normal. And when light travels from denser to rarer medium, it bends away from the normal. Also, from the diagram, it is clear that emergent ray will always be parallel to the incident ray.
PLZ FAST Scientific knowledge is both long lasting and always _______.
changing
non-observable
permanent
untestable
A car travels along highway with a speed of 36 km/h. Find out the distance
travelled by the car in 1 minute.
Please find attached photograph for your answer. Hope it helps. Please do comment
9. Liquid A has greater density than Liquid B. Which liquid will be exerting more pressure on the sides of the container?
Answer:
The depth of water near middle tube is greater so the water comes out with greater pressure from middle tube and falls farther away from the base of vessel. The depth of water near lowermost tube is the greatest so the water comes out of lowermost tube with the greatest pressure and goes farthest from the vessel.
can someone please help me with these
Answer:
1000mg = 1g
160cm = 1600mm
109g = 0.109kg
250m = 0.25km
14km = 14000m
1L= 1000ml
480cm = 4.8m
27g = 0.027kg
198g = 0.198kg
75ml = 0.075L
50cm = 0.5m
5L = 5000mL
16cm = 160mm
65g = 65000mg
2500m = 2.5km
355ml = 0.355L
8mm = 0.8cm
6.3cm = 63mm
5.6m = 560cm
26000cm = 260m
56500mm = 0.0565km
27.5mg = 0.0275g
923cm = 9.23m
0.025km = 2500cm
First Column
1. 1000mg = 1g
2. 160cm = 1600mm
3. 109g = 0.109kg
4. 250m = 0.25km
5. 14km = 14000m
6. 1L= 1000ml
7. 480cm = 4.8m
8. 27g = 0.027kg
Next column
9. 198g = 0.198kg
10. 75ml = 0.075L
11. 50cm = 0.5m
12. 5L = 5000mL
13. 16cm = 160mm
14. 65g = 65000mg
15. 2500m = 2.5km
16. 355ml = 0.355L
Last Column
17. 8mm = 0.8cm
18. 6.3cm = 63mm
19. 5.6m = 560cm
20. 26000cm = 260m
21. 56500mm = 0.0565km
22. 27.5mg = 0.0275g
23. 923cm = 9.23m
24. 0.025km = 2500cm
determine the number of significant figures in 00.6022009
The number of significant figures in 00.6022009 is 7 .
The number of significant figures is 7.
Explanation:
Significant figures
The figures in a number that expresses the magnitude of a quantity to a specific degree of accuracy are known as significant digits.Digits from 1 to 9 are always significant and have an infinite number of significant figures.All non-zero numbers are always significant. For example, 684, 9.54, and 63.4 all have three significant figures.All zero’s between integers are always significant. For example, 2005, 8.005, and 10.05 all have four significant figures.All zero’s preceding the first integers are not significant. For example, 0.0038 has two significant figures.All zero’s after the decimal point are always significant. For example, 4.500, 43.00, and 950.0 all have four significant figures.All zeroes used solely for spacing the decimal point are not significant. For example, 6000 has one significant figure.Given :
The number 00.6022009
To find:
The number of significant figures in the number.
Solution
00.6022009
All zero’s preceding the first integers are not significant.
Zeros in between the integers are significant
So, the number of significant figures is 7.
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PLEASE HELP AM GIVING 20 POINTS A worker in a factory has discovered a material that is confusing. It can be stored in a container but can also flow from one container to another. It forms powder after some time. The worker is confused and does not know which state of matter it belongs. As a student of Physics, prepare a message that will help the worker in the factory to properly classify the substance in the right state of matter.
The factory worker need to know is the state of the material at room temperature and atmospheric pressure.
Matter is anything that has mass and occupy space. Everything around is composed of matter. The material can easily be classified by considering the state of matter in which the material is found at room temperature and atmospheric pressure.
Hence, all the factory worker need to know is the state of the material at room temperature and atmospheric pressure. This will tell us whether it is a liquid, solid or gas.
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