Answer: C, 10 m/s
Explanation:
A house is advertised as having 1560 square feet under roof. What is the area of this house in square meters?
Answer:
1 m = 3.28 ft
1 m^2 = 10.76 ft^2
1560 ft^2 / 10.76 ft^2 / m^2 = 145 m^2
A helicopter flies 25 km north, 5 km east, then 5 km S, then 15 km W. What is the resultant displacement and direction of the helicopter? Solve using graphical or mathematical methods. Be sure to either show work or explain your graphical methods.
Answer:
Explanation:
Plotting the original location of the helicopter before it flies 25 km north, it would be at the origin, (0,0) then after it flies north, the y vertex gains 25 points, so it would be (0,25)
After it flies east, the x coordinate gains 5 points, so it would now be (5,25)
After it flies south, the y coordinate loses or is subtracted by 5 points. so it would now be (5,20)
After flying west, the x coordinate loses 15 points. So the final vertex would be at (-10,20)
East = Right
West = Left
South= Down
North = Up
I used mainly mathematical methods by adding and subtracting the x and y coordinate values, but this could be graphed easily since I gave the coordinates just incase!
Hope this helps!
Answer:
Explanation:
D = Xf - X
D = 15km West - 25km North
D = -10km West
variation of gravity with depth ??
As we go down the earth, we are moving towards the centre of the earth therefore the distance between us and center of the earth reduces and hence there is reduction in force acting on us by earth i.e gravity.
When an object moves, where does the energy come from?
Answer:
potential energy cover in to kinetic energy
i hope it will work
A car is running at a constant speed of 25m/s when the driver sees a child's sped of 20m a head he applied a break a car is top in 50 minutes calculate the time to stop the car and accelaration
Answer:
Umm..... Sorry can't understand your question, too many grammar mistakez
A plastic tube allows a flow of 12.9 cm°/s of
water through it.
How long will it take to fill a 227 cm bottle
with water?
Answer in units of s.
Answer:
It will take [tex]17.5968 s[/tex] to fill a bottle with water.
Explanation:
Total capacity of tube [tex]=227[/tex] cm.
Rate of full up the water in the tube [tex]=12.9 $\mathrm{cm}^{\circ} / \mathrm{s}$[/tex]
Total full up the tube [tex]=[/tex] rate [tex]\times[/tex] time
[tex]T=r \times t[/tex]
[tex]227 \mathrm{~cm}$$=12.9 \mathrm{~cm}^{\circ} / \mathrm{s} \times t[/tex]
[tex]t=\frac{227}{12.9}[/tex]
[tex]=17.5968s[/tex]
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Which of the following is an example of a vector quantity
A) a student walks 2.0km north
B) an object has a mass of 10.5 kg
C) A 1.0 kg object moves at 18 m/s
D) a ball has an instantaneous speed of 15 m/s
Answer:
A
Explanation:
A vector is a physical quantity that has magnitude and direction, so with A having a magnitude of 2.0km and a direction pointing north⬆️
Hope its helps
give some sources of potential difference (P.D) that you know.
__________________
One example of a rechargeable source of P.D.
__________________
Give one example of a source of P.D. which is used once and finally thrown away_____________
An atom’s location on the periodic table provides information such as…
An atom’s location on the periodic table provides information such as;
1. Atomic number.
2. Number of valence electrons.
3. Atomic weight.
An atom can be defined as the smallest unit which comprises the matter that forms all chemical elements. Thus, atoms are typically the fundamental building blocks of matter and as such determines (defines) the structure of a chemical element.
Generally, atoms are typically made up of three (3) distinct particles and these are;
Protons. Neutrons. Electrons.Periodic table is an organized tabular array of all the chemical elements arranged in order of increasing atomic number (in rows).
Generally, an atom’s location on the periodic table (the group of elements it belongs to) provides information such as;
1. Atomic number.
2. Number of valence electrons.
3. Atomic weight.
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[tex]m1 = \frac{- v2m2 - m2v1}{v2 - v1} [/tex]
A lound sound has large
Answer:
amplitude
Explanation:
A loud sound has large very high amplitude
Ellie conducts an investigation to determine if size or weight affect how fast objects fall. Her investigation includes repeatedly dropping a basketball and a golf ball at the same time. After many trials, she determines that both balls land at the exact same time.
Why would Ellie's investigation be valid?
It is based on evidence.
It uses objects that move.
It proves her predictions are correct.
It includes her opinion.
Answer: The answer is A
Explanation: I have the same exact question as you and i took a quiz with this exact question and it said that was the answer and i also took a quizlet with this question and it also said the answer was A hope this helped :)!
The repetition of the experiment allows to support the results, therefore the correct answer is:
based on experimental evidence
The theory is a set of rules, principles and knowledge that are developed from models and experiments that are carried out repeatedly, finding similar results in any given case.
In this case, Ellie repeated each experiment several times, finding results that lead to the result that the two balls hit the ground at the same time, therefore her conclusions are supported by experimental evidence.
In conclusion the conclusions of the experiment of dropping the balls the correct answer is: it is based on the experimental evidence
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A car went 465km, how far did it go in meters
Answer:
465000 meters
Explanation:
kilometer to meter = ×1000
465 × 1000 = 465000
Answer:
465000 M
Explanation:
1Km = 1000m
465Km= (465)(1000)
465000
help please! this is physics !
Answer:
4. The choose b. 0.000355
Ans; 3.55× 10-⁴ = 0.000355
5. The choose C. 80600
Ans; 8.06 ×10⁴= 806×10² = 80600
I hope I helped you^_^
A scientist adds different amounts of salt to 5 bottles of water. She then
measures how long it takes for the water to boil. What is the responding
variable in this experiment?
O A. The time it takes for the water to boil
O B. The amount of salt added to the water
C. The kind of bottles used
D. The brand of salt used
Answer:
A. The time it takes for the water to boil
It is because salt was added into the water. So the responding variable is the time taken to boil the water.
hope this help u. good luck
A bowling lane is 18 meters long. How long would it take a 1.5 m/s bowling ball to
roll down that lane?
16.5 seconds
16.5 meters
12 seconds
27 seconds
27 meters
12 meters
Divide distance by speed:
18 meters / 1.5 meters/ second = 12 seconds
Answer: 12 seconds
A bowling lane is 18 meters long. it would take 12 seconds for a 1.5 m/s bowling ball to roll down that lane, therefore the correct answer is the third option
What is Velocity?The total displacement covered by any object per unit of time is known as velocity. It depends on the magnitude as well as the direction of the moving object.
The mathematical expression for velocity is given by
velocity= total displacement/Total time
As given in the problem a bowling lane is 18 meters long and the ball is moving with a velocity of 1.5 m/s in the roll-down lane we have to find the time period for the bowling ball to roll down that lane
Total displacement = 18 meters
the velocity of the ball = 1.5 m/s
time =?
By substituting the values in the formula of the velocity
1.5 = 18/t
t= 12 seconds
Thus , it would take 12 seconds for a 1.5 m/s bowling ball to roll down that lane
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Air Rockets can be a fun way of investigating forces. When a air rocket is launched compressed air
forces the cardboard rocket off the launcher and up into the air.
• Name the forces acting on the rocket at the top of it's flight.
. Are the forces at the top of the flight balenced or unbalenced?
• Describe how the size and direction of the air resistance force changes during flight, an state
the definition of friction.
A bicycle starts at 50 m from an intersection. ten seconds later the bicycle is 85 m from the same intersection what is the slope of the bicycles position versus time graph 5 s after it starts assume constant velocity motion
Answer:
use the formula of slope=(x₂-x₁)/(y₂-y₁)
Explanation:
The slope of the bicycle's position versus time graph 5 s after it starts to assume constant velocity motion would be 7 meters/second.
What is Velocity?The total displacement covered by any object per unit of time is known as velocity. It depends on the magnitude as well as the direction of the moving object.
velocity slope =change in the position of the object /change in time
As given in the problem a bicycle starts at 50 m from an intersection. ten seconds later the bicycle is 85 m from the same intersection,
change in the position of the bicycle = 85-50
= 35 meters
change in the time = 10 -5 seconds
= 5 seconds
slope = 35 meters/5 seconds
= 7 meters/second
Thus, the slope of the bicycle's position versus the time graph would be 7 meters/second.
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1. What type of waves does light travel in? 1.Transverse waves 2.Longitudinal waves
plz help someone
Answer:
Transverse waves
Explanation:
Light moves in waves. Light waves are different from sound waves in that light travels in transverse waves (as opposed to longitudinal, which is how sound waves travel). A light wave that travels in a direction is called a light ray.
The light waves travel as Transverse waves. Therefore, option (1) is correct.
What are Transverse waves?Transverse waves can be defined as waves that usually oscillate along paths that are perpendicular to the direction in which the wave is traveling. Examples of transverse waves involve the vibration of the guitar, electromagnetic waves, water surface ripples, primary waves of the earthquake, and seismic S waves.
Particles of matter in a transverse wave, oscillate up and down about their mean location rather than follow the path of the transmission of the wave.
A transverse wave can be described as every particle of the medium traveling around its mean position in an opposite direction of the propagating direction of the wave.
Transverse waves can be produced in solids and on the surface of liquids. Transverse waves are not possible to create in liquids or gases. Therefore, electromagnetic waves or light waves travel as Transverse waves.
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In physics, what is the positive and negative sign used for when applied to velocity and acceleration?
Answer:
the positive and negative signs are used to show different directions of acceleration and velocity
Explanation:
for example, if a car was moving forward, you would usually express it with a positive sign. If the car started moving backwards, you would show that backwards motion with a negative sign.
PLEASE ANSWER!!! WILL GIVE BRAINLIEST!!!!!
What is energy?
anything that has mass and takes up space
the ability to do work
all the "stuff" in the universe
phases: solids, liquids, and gases
Answer:
the ability to do work.
EXPLAINATION: .
in other words "the potential for causing changes" or "energy is the cause of any change" or "a work that a certain force *eg: gravitational* can do.
sorry if this is not the answer that you wanted but I couldn't understand your question that's why I wrote what I understood.
The equation below can be used to find the specific heat capacity of a substance. What is the specific heat capacity if it takes 1000 J of energy to heat 25 g of this substance by 100°C? Give your answer in J/kg°C.
Answer:
0.4j/g
Explanation:
using H = MCQwhere H is heat energy, M is mass of substance, and Q temperature change
1000= 25*C*1001000=25*100*C1000=2500Cdivide both by 25001000/2500=CC = 0.4j/gAnswer:
u837483 hd83v
Explanation:
ueu383hevd8eb2 e eusb2 3udbr easy elements easy when ever ever ekq Asner skate s Jesse issbqks. sis whish
What is the name of the distance that is 103 larger than a meter
Answer:
kilometer
Explanation:
kilometer is larger than the meter
What is the manipulated variable?
Answer:
ore specifically, in an experiment, a variable can cause something to change, be the result of something that changed, or be controlled so it has no effect on anything. Variables that cause something to change are called independent variables or manipulated variables.
Explanation:
help me please i dont understand
Dean Potter is known for slacklinging across a 915 metter deep ravine in Yosemite National Park with no safety gear. If his mass is 77 kg, how much potential energy did he have?
Explanation:
answer 689910
M x G x H
mass = 77
G= 9.8
Meter = 915 this is the height
77 x 9.8= 754.6
754.6 X 915 = 689910 J
Dean Potter is known for slacklining across a 915-metter deep ravine in Yosemite National Park with no safety gear. If his mass is 77 kg then he has the potential energy of 691163.55 Joules
What is mechanical energy?As total mechanical energy is the sum of all the kinetic as well as potential energy stored in the system.
ME = KE + PE
As given in the problem Dean Potter is known for slacklining across a 915-meter deep ravine in Yosemite National Park with no safety gear. If his mass is 77 kg,
m =77 kg
h = 915 m
the total potential energy of the dean potter can be calculated withe the help of the formula of the potential energy
PE = mgh
PE = 77*9.81*915
PE = 691163.55 Joules
Thus, he would have the potential energy of 691163.55 Joules
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i just need b isolatedwill mark brainliest
what is practical machine?
Explanation:
A practical machine is a simple machine that losses energy and have parts that have weights, friction and it causes some loss of work done.
Speed depends on how far something travels and
Question 1:
Answer: I think the answer is C
A car starts from rest and accelerates at 5 m/s/s.
a) what is the position of the car after 4 seconds?
b) what is the speed of the car after 4 seconds?
c) how long will it take the car to travel 100 meters?
d) how long will it take the car to reach 30 m/s?
Please find attached photograph for your answer. Hope it helps. Please do comment
