Answer:
170kmExplanation:
If a ship sets out to sail to a point 154 km due north and an unexpected storm blows the ship to a point 72 km due east of its starting point, then the ships distance from the original destination can be gotten by finding the displacement of the ship and this can be gotten by using pythagoras theorem.
Let D be the unknown displacement
According to the theorem;
D² = 154² + 72²
D² = 23716 + 5184
D² = 28900
D = √28900
D = 170km
This means that the ship must now sail a distance of 170km for it to reach its original destination.
yes this nees helppppppppppppppp
Answer:
lol
Explanation:
it was funny
5) Make the measurement equal by conversion. 2000 g = 2 kg 14000m = 14 km mm = 160 cm 0.8 m = cm 109 g = kg kg = 5.6 g L = 75 mL 16.5mm = cm
Answer:
1600 mm80 cm0.109 kg0.0056 kg0.075 L1.65 cmExplanation:
The relevant conversion factors are ...
1 m = 100 cm
1 cm = 10 mm
1 kg = 1000 g
1 L = 1000 mL
These are based on the meanings of the SI prefixes:
centi- = 1/100
milli- = 1/1000
kilo- = 1000
__
2000 g = 2 kg --- given
14000m = 14 km --- given
1600 mm = 160 cm
0.8 m = 80 cm
109 g = 0.109 kg
0.0056 kg = 5.6 g
0.075 L = 75 mL
16.5mm = 1.65 cm
Select the correct answer.
You travel in a circle, whose circumference is 8 kilometers, at an average speed of 8 kilometers/hour. If you stop at the same point you started
from, what is your average velocity?
OA. O kilometers/hour
ОВ. 2 kilometers/hour
OC. 4 kilometers/hour
OD. 8 kilometers/hour
О Е. 16 kilometers/hour
Answer:
A. 0 kilometers/hour
Explanation:
Your net displacement is zero, so the average velocity is zero.
velocity = displacement / time
where displacement is a vector quantity.
The students in the diagram are communicating with the can and string. Which term best describes the sound wave that travels along the string
Answer:
Mechanical :D
A car accelerates uniformly from rest to a speed of 18 m/s in 12 seconds. Find the acceleration of the car over this period.
The correct answer is [tex]1.5 m/ s^{2}[/tex]
Explanation:
In general terms, the acceleration refers to how velocity changes or increases. This is measured in meters per second squared ([tex]m/s^{2}[/tex]) or similar units such as kilometers per hour squared ([tex]km/h^{2}[/tex]). Moreover, to calculate acceleration it is necessary to subtract the initial velocity from the final velocity and then divide this into the time. The formula and operation are shown below:
[tex]a (acceleration) = \frac{v (final velocity) - u (initial velocity)}{t (time)}[/tex]
[tex]a= \frac{18 m/s - 0 m/s}{12 s}[/tex] (Initial velocity is 0 m/s because the car was at rest)
[tex]a = \frac{18 m/s}{ 12 s}[/tex]
[tex]a = 1.5 m/s^{2}[/tex]
According to this, the acceleration of the car was [tex]1.5 m/s^{2}[/tex]
Subtract 2.5×10^-5 from 8.0×10^-3 with regards to significant numbers.
Answer:
8.0 x 10⁻³
Explanation:
(8.0×10⁻³) - (2.5×10⁻⁵)
= (8.0×10⁻³) - (2.5 × 10⁻² x 10⁻³) (factor out 10⁻³)
= 10⁻³ [ 8 - (2.5 x 10⁻²) ]
= 10⁻³ [ 8 - 0.025 ]
= 10⁻³ [ 7.975 ]
= 7.975 x 10⁻³
however we can observe that both original numbers are expressed to 2 significant figures, hence we must express our answer also in 2 significant figures by rounding 7.975 to 8.0, thereby giving us:
8.0 x 10⁻³
VR of a single movable Pulley is 2,why?
Explanation:
Hey, there!!
Single movable pulley has 2 VR because in single fixed pulley, load is supported with two segments of the string. It makes the effort distance double of the load distance. {As VR = No.of pulley used or number of rope segments that supports the load.}
Hope it helps...
What is best for magnets? Aluminum Silver Plzzzzz help
Answer:
Aluminum
Explanation:
Silver is not good for magnets, it doesn't hold magnetic properties. Hope this helps.
Answer:
Aluminum
All the elements that are magnetic:
Iron
Cobalt
Nickel
Aluminum
Neodymium
Samarium
Boron
Dysprosium
Chromium
Zinc
Barium
Strontium
Bismuth
As you can see silver is not on the list of every elements that are magnetic and aluminum is.
Hope this helps!
The blade of a metal cutter is shorter than that of the scissors used by tailor.why
Answer:
It depends on the amount of pressure needed to cut your material. Metal is a tougher material to cut though, so the blades must be shorter to create more pressure to break through the metal. Cloth on the other hand is easier to cut through so the blades can be longer in order to cut more in each snip.
Some vehicles, like _____, have different rules for registration and renewal. A. trailers B. coupes C. sedans D. pickup trucks
Answer:
trailers
Explanation:
Some vehicles, like trailers, have different rules for registration and renewal
What is the registration process for trailers?Before registering a trailer, you will generally need to submit a signed title to verify your ownership. Alternately, you might be able to use a manufacturer’s statement of origin.
You will also need to sign and submit an application for the license and title of the trailer, along with receipts of applicable property taxes. Finally, you will need to pay the registration fees.
Before you make a trip to the DMV, make sure to have two forms of photo ID on hand to verify your identity when you speak with an agent. For example, your driver’s license might serve as the primary form of ID, and a passport could serve as the second.
If you do not have a passport, you could use a military identification card instead. If your only form of photo ID is your driver’s license, be sure to have other forms of identification on hand, such as your birth certificate and the card with your Social Security number.
Hence Some vehicles, like trailers, have different rules for registration and renewal.
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please help! need a answer as quick as possible please. i need help with questions 1 and 2 ! thank you
Answer:
1.)When you arrive from school and you smell cookies baking in the kitchen your brain will tell you that you are hungry and that you should go to the kitchen at that point your sense organs like your nose helps you to detect that something is baking(cookies)and your nervous system (brain)will tell you that you are hungry and it will command/direct your brain to go to the kitchen then for you to eat the cookies and drink the milk the digestive system is going go help you to chew,swallow and digest the food which has been taken and when you also run to the kitchen at the beginning your brain will direct your skeletal and muscular system because the skeletons and muscles work hand in hand,and when you finish your meal the body will circulate some nutrients or minerals from the food or snack taken to other parts of the body for energy.
2.)When you sleep the whole body is asleep except the heart which needs to continue circulating blood around the whole system and sometimes the brain may not rest when you are sleeping it may continue to do it's work that's why some people usually sleep walk or sleep talk,it means the brain is not at rest and still doing some things....Thank you for the question I hope it is very useful to you.
Anna wanted to see what battery lasts the longest she put each batter into a clock and recorded the time that the clock stopped she use their sale energizer Kroger brand and everybody what is the constant
Answer:
The resistance of the clock circuit.
Explanation:
In electricity, the potential difference or voltage is the drive force. It is known as the electromotive force in a battery or generator. The potential difference is the difference in the higher terminal and the lower terminal of the circuit. The potential difference forces electrons to move in an orderly fashion, from the higher potential to the lower potential; this flowing electrons is what is called the current of the circuit. When the electrons flow, they meet a certain amount of resistance. This resistance is unique to the material of the circuitry, and does not change in a circuit. The value of the resistance of the circuit remains the same, even when the potential difference of the electrical energy source is depleted, and current stops to flow.
What are some tasks commonly performed in Power, Structural, and Technical Systems jobs? Check all that apply.
Answer:
Answer: operating large equipment, testing and fixing machinery, recording information, tracking supplies
Explanation:
sigma F = T-10m but a = 0 in the equation sigma F = ma
Answer:
m = T/10 = (1/10) T
Explanation:
From the question given:
∑F = ma .... (1)
∑F = T – 10m .... (2)
a = 0 m/s²
m =?
Thus, we can obtain m in terms of T as shown below:
From equation (1)
∑F = ma
a = 0 m/s²
∑F = ma = m × 0
∑F = 0
Next, substitute the value of ∑F into equation (2) to obtain m. This is illustrated below:
∑F = T – 10m
∑F = 0
0 = T – 10m
Rearrange
0 + 10m = T
10m = T
Divide both side by 10
m = T/10
m = (1/10) T
Therefore, m is (1/10) T
can someone please tell the ans of this question too.
Answer:
It's of A number.
ans=70
Explanation:
Answer:
A 70 sec
Explanation:
The longest cave system in the world is the
Mammoth Cave system in Central Kentucky.
It has a mapped length of 348 miles.
Find its length in kilometers. 1 mi = 1.609
km = 5280 ft.
Answer in units of km.
Answer:
________________
560 kilometers
I think this is correct.
________________
Answer:
The answer of the question is = 560.052
Kilometer.
you must design a runway that allows planes to reach a ground speed of 65 m/s before they can take off. If the planes accelerate at 2.5m/s/s, what must the minimum length of the runway be?
Answer:
d = 845 m
Explanation:
This is an exercise in kinematics, specifically accelerated motion, let's use the equation
v² = v₀² + 2 a d
since airplanes start from rest their initial velocity is zero
v² = 2ad
d = v2 / 2a
let's calculate
d = 65² / (2 2.5)
d = 845 m
this is the minimum distance from the track
(URGENT PLS HELP)The diagram shows a wire between the poles of a magnet.
The wire is perpendicular to the page.
The wire is moved and a current is induced upwards, out of the paper.
In which direction is the wire moved?
A left to right
B right to left
C up the page
D down the page
Answer:
C up the page i guess this is roght
If the earth was hollow and you jumped into the middle, what would happen?
Answer:
Since there is a gravitational pull, you wouldn't reach the other side. You'd probably be floating in the center of the earth.
What is the only component of scalar quantities?
Answer:
Scalar quantities have a size or magnitude only and need no other information to specify them. Thus, 10 cm, 50 sec, 7 litres and 3 kg are all examples of scalar quantities.
Explanation:
If a force of 2 N applied over an area of 2 cm², calculate the pressure produced.
Answer:
10000 Pa
Explanation:
Area = [tex]2 cm^2[/tex]
= 2/10000 = [tex]0.0002 m^2[/tex]
We know that,
Formula of pressure =
Pressure = Force/Area = 2N/0.0002 [tex]m^2[/tex] = 10000 Pascal
[tex]\boxed{\sf Pressure=\dfrac{Force}{Area}}[/tex]
[tex]\\ \sf\longmapsto Pressure=\dfrac{2}{0.0002}[/tex]
[tex]\\ \sf\longmapsto Pressure=10000Pa[/tex]
give an expression for the mechanical advantage of an inclined plane
Answer:
The mechanical advantage of an inclined plane, equal to the length of the plane divided by the height. The mechanical advantage for a ramp is the ratio of the force applied to the output force. By conservation of energy, the mechanical advantage can be expressed in terms of the distance traveled.
Answer:
read more on energy education
Explanation:
The mechanical advantage of an inclined plane, equal to the length of the plane divided by the height. The mechanical advantage for a ramp is the ratio of the force applied to the output force. By conservation of energy, the mechanical advantage can be expressed in terms of the distance traveled.
Explain the following (using the concepts of moment, center of gravity and stability.) a) Racing cars are low, with wide wheels. b) It is difficult to steer a bicycle by gripping the center of the handlebars
Answer:
b
Explanation:
Which statement describes a characteristic of a question that can be answered through scientific inquiry? A. It can be answered using a philosophical argument. B. It requires the approval of more than one scientist. C. It requires the application of ethical standards. D. It can be answered using measurements.
Answer:
the correct one is D
Explanation:
A question that can be answered with a scientific investigation must be a question where measurements of some kind can be made and with these measurements check that the question is correct or not.
When examining the answers the correct one is D
what do you mean by electromagnet induction?under what condition is this phenomenon possible?
Answer:
Electromagnetic induction is a phenomenon in which a changing magnetic field across a loop of wire results in the generation of an induced emf. When there is relative motion between a magnet and the coil, magnetic flux changes and hence an electromotive force is generated in the coil.
An internal combustion engine has an efficiency of 22.3%. This engine is used to deliver 6.25x 40 J of work to drive the motion of the train. What is the total energy that needs to be put into the engine?
Answer:
Explanation:
efficiency = energy output x 100 / energy input
putting the values
22.3 = 6.25 x 10⁴ x 100 / energy input
energy input = .28 x 10⁶
= 28 x 10⁴ J
energy that needs to be put into the engine = 28 x 10⁴
1 example of Deionization
Answer:
For example, the rain water does not have any salinity, except the small quantity due to the atmosphere, while the sea water has a very high salinity.
hope this helps you friend
what is the difference between a thermometer and a temperature ?
thermometer is the device used to measure temperature whereas temperature is the degree of hotness or coldness
Answer:
temperature is the measure of hotness or coldness of an object or a place.
thermometer is an instrument used to measure the temperature.
Explanation:
Hope this helps （＾▽＾）
a rocket starts from rest to 12s , it’s speed became 120m. find the distance it covered
Answer:
1440 m
Explanation:
Speed = Distance/Time
Distance = Speed × Time
= 120 × 12
= 1440m
Steve walks from his house 5 km South then turns east and walks 2 km. Then he walks 9 km North to his older sister's house. She gives him a ride to his friend Fred's house 2 km West. Find his distance
Given :
Steve walks from his house 5 km South then turns east and walks 2 km. Then he walks 9 km North to his older sister's house. She gives him a ride to his friend Fred's house 2 km West.
To Find :
The total distance covered by Steve .
Solution :
We know , distance is the actual measurement space between two points .
Now , total distance travelled by Steve is the sum of all distance travelled .
[tex]T=5+2+9+2\\\\T=18\ km[/tex]
So , total distance covered by Steve is 18 km .
Hence , this is the required solution .
The distance Steve traveled is mathematically given as
T=18Km
What is distance has Steve traveled?Question Parameters:
Steve walks from his house 5 km South then turns east and walks 2 km.
Then he walks 9 km North to his older sister's house.
Generally, the total distance has Steve traveled is mathematically given as
T=5+2+9+2
T=18Km
In conclusion, because the distance is the measure of space b/w two points the total distance traveled is
T=18Km
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