Answers
Answer:
a
Explanation:
aaaaa......................aaaaaa
Related Questions
I need some help with this
Answers
It is B: low precision,low accuracy
Explanation:
Have a great day =)
Car A, traveling north at 46 mi/hr, is passed by Car Bwhich is traveling north at 56 mi / h * r . A passenger riding in Car B would measure the velocity of Car A in mi / h * r ) to b
Answers
Answer: - 10 mph
Explanation: The car B passenger would see a car going backwards from his/her position, by the speed difference: (46-56) = -10 mph.
Can you answer it for me pls
Answers
Answer:
the answer is b. because liquid always bubble when boiling
An object has a mass of m and a weight of w moon whole it is on the moon where the acceleration due to gravity is 1.6mls 2 what will be the weight of the object when it is brought to the earth
Answers
Answer:
calculate with yhis formula "w=m×g
please answer quick, i’ll give brainliest!
Answers
Answer:
3 seconds
Explanation:
30/10=3
The state in which the inside of each heart cell is negatively charged and the outside is positively charged is:
Answers
Answer:
Resting state
Explanation:
11 An aeroplane is travelling horizontally at a speed of 80 ms", and drops a crate of emergency supplies
(Figure 2.39). To avoid damage, the maximum vertical speed of the crate on landing is 20 ms.
You may assume air resistance is negligible.
80 ms
Figure 2.39 For End-of-chapter Question 11.
a Calculate the maximum height of the aeroplane when the crate is dropped.
b Calculate the time taken for the crate to reach the ground from this height.
• The aeroplane is travelling at the maximum permitted height Calculate the horizontal distance travelled
by the crate after it is released from the aeroplane.
12
12
Answers
a.
The maximum height of the aeroplane when the crate is dropped is 20.41 m
Using v² = u² - 2gs where u = initial vertical speed of crate = -20 m/s(since it is falling), v = final vertical speed of crate = 0 m/s (since it stops immediately it lands), g = acceleration due to gravity = 9.8 m/s² and s = maximum height of airplane when crate is dropped.
So, making s subject of the formula, we have
s = -(v² - u²)/2g
Substituting the values of the variables into the equation, we have
s = (v² - u²)/2g
s = -((0 m/s)² - (-20 m/s)²)/(2 × 9.8 m/s²)
s = -(-400 m²/s²)/(19.6 m/s²)
s = 400 m²/s²/19.6 m/s²
s = 20.41 m
So, the maximum height of the aeroplane when the crate is dropped is 20.41 m
b.
The time taken for the crate to reach the ground from maximum height is 2.041 s
Using v = u + gt where u = initial vertical speed of crate = -20 m/s(since it is falling), v = final vertical speed of crate = 0 m/s (since it stops immediately it lands), g = acceleration due to gravity = 9.8 m/s² and t = time taken for the crate to reach the ground from maximum height.
Making t subject of the formula, we have
t = (v - u)/g
Substituting the values of the variables into the equation, we have
t = (v - u)/g
t = (0 m/s - (-20 m/s))/9.8 m/s²
t = (0 m/s + 20 m/s))/9.8 m/s²
t = 20 m/s/9.8 m/s²
t = 2.041 s
So, the time taken for the crate to reach the ground from maximum height is 2.041 s
c.
The horizontal distance travelled by the crate after it is released from the aeroplane is 163.27 m
Since the horizontal velocity of the crate is the horizontal velocity of the crate, we calculate the horizontal distance the crate travelled after it is released from the aeroplane.from
d = Vt where V = horizontal velocity of crate = 80 m/s and t = time taken for crate to drop from maximum height = 2.041 s.
So, substituting the values of the variables into the equation, we have
d = Vt
d = 80 m/s × 2.041 s
d = 163.27 m
So, the horizontal distance travelled by the crate after it is released from the aeroplane is 163.27 m
Learn more about projectiles here:
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I'm very confused. Thanks for whoever helps me :)
Answers
(B). Then you use vf=vi+at to get the equation 35.7=(9.81)t, when you divide out you get 3.64s for time t
(A). Finally, since we assume that there is no acceleration or deceleration horizonatally, we just multiply the time taken for it to hit the ground and the initial speed ((3.64)(35.7)) to get 129.96, with significant figures I would round that to 130 metres.
**this is in the order that I felt was easiest to answer**
A ball with a mass of 5 kg is located at a height of 10 m. What is the potential energy of the ball?
Answers
Answer: 14.14m/s
Explanation: mark me brainly
Given the mass of the yo-yo is m and the length of the string (radius of the circle traced by the yo-yo) is L, you find the moment of inertia to be I. If you double the length of the string, what is the new moment of inertia
Answers
I = mL^2
At condition 2:
I’ = m(2L)^2 = 4mL^2 = 4I
What is the average speed of an object that travels 6 meters in 2 seconds and then travels 3 meters in 1 second?
Answers
Answer:
3 m/s
Explanation:
Average Speed = [tex]\frac{Total Distance}{Total time}[/tex]
Plug in the numbers, it will be (6m + 3m) divided by (2s + 1s), which is 9m/3s, which equals to 3m/s.
the heat of combustion of ethane, c2h6, is 1560 kj/mol. what is the heat of combustion of ethane, in kj per gram?
Answers
Answer: 52 kj/gm
Explanation:
the heat of combustion of ethane, c2h6, is 1560 kj/mol. what is the heat of combustion of ethane, in kj per gram?
ethane is C2H6 and has a molecular mass of (2X12) + (6X1) = 30m
1 mole of ethane = 30 gmsso
1560 kj/moe = 1560 kj/30gm =
52 kj/gm
PLEASE HELP ASAP! WILL GIVE BRANLIEST! Pay attention to what happens to the things around you as you go about your day. Describe three examples of Newton’s third law in action. In your examples describe the action and the equal and opposite reaction.
Answers
Answer:
jumping, pulling a elastic band, bouncing a ball
Explanation:
when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air.
When we pull an elastic band, it automatically returns to its original position. The more you pull the more force it generates. This is the same when you pull or compress a spring. The action (applied force) is stored as energy and is released as a reaction with an equal and opposite force
A ball is able to bounce because of the reaction from the ground. If there was no reaction then the ball would not bounce but rather stick to the ground.
The photo shows a skateboarder pushing her foot against the ground as she rides down a hill. How does this action cause the skateboarder's speed to change?
OFFERING BRAINLIEST PLS RESPOND ASAP
science
Answers
Answer:
it increases the net force pointing down the hill, so she speeds up
Explanation:
Science 6.4.2
A weightlifter raises a 180-kg barbell to a height of 1.95 m. How much work is done by the weightlifter in lifting the barbells
Answers
P= 10m = 10 x 180 = 1800 N
work is done by the weightlifter in lifting the barbells :
A= Ph = 1800 x 1.95 = 3510 J
ok done. Thank to me :>
what color of light does a low-pressure sodium street lamp give off?
Answers
Answer:
Yellow Light
Explanation:
Low-pressure sodium lamps gives of a yellow/orange light/glow. Which can also be said as monochromatic yellow light. Because they only produce a single wavelength of yellow light, which results in a less intense light output.
Hopefully this is right! :D good luck
A 600 kg elevator initially moving upward undergoes motion represented by the
velocity vs time graph shown. Calculate the force of tension supporting the
elevator. (Enter your answer as four significant figures without units or spaces.
Ex) If the force=1598.3 N enter "1598") *
velocity
(m/s)
7
6
ET
5
4
3
2
1
time
(5)
0
1
2
3
4
5
6
7
Answers
The force of tension supporting the elevator is 400.0 N
To find the force of tension supporting the elevator, we need to find the acceleration of the elevator from the gradient of the graph.
So, a = Δv/Δt = (v₂ - v₁)/(t₂ - t₁) where v₁ = 2 m/s, t₁ = 0 s, v₂ = 6 m/s and t₂ = 6 s
So, a = (6 m/s - 2 m/s)/(6 s - 0 s)
a = 4 m/s ÷ 6 s
a = 2/3 m/s²
a = 0.67 m/s²
So, the force of tension on the elevator, T = ma where m = mass of elevator = 600 kg and a = acceleration of elevator = 2/3 m/s².
So, T = ma
T = 600 kg × 2/3 m/s²
T = 400 N
So, the force of tension supporting the elevator is 400.0 N
Learn more about tension here:
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Around age 60, Alex's lens entirely lost its capacity to adjust to objects at varying distances. Alex has a condition called
Answers
There are various conditions usually associated with the eyes. Most are eye defects and this include, glaucoma, presbyopia, myopia, hypermetropia and the likes.
Around age 60, Alex's lens entirely lost its capacity to adjust to objects at varying distances developing the presbyopia condition.
Presbyopia is a genetic condition that affects the eye. It is also an age-related condition. In this case, the eye lens cannot change its shape easily as compared to when young. It occurs when the eye lose its ability to focus on objects at various distance producing blurry images.Learn more about presbyopia: https://brainly.com/question/24303969
EASY 35 POINTSSSSS PLSSSSSSSS
i just need notes on food weds so what ever u find just put on the answer
Answers
Answer:
the predator or tertiary consumer is not eaten except by saprophytes and maybe vultures, feeding starts from the green plants or producers going through a complex energy transfer
what is the dissolving substance in a solution? A.)particles B.)solute C.)solvent D.)water
Answers
Answer:
b.Solute
Explanation:
The substance being dissolved is called the solute and the liquid doing the dissolving is called the solvent. In order for a substance to dissolve, the molecules of the solute need to interact with the molecules of the solvent.
Why does plasma challenge what we know about matter? How does it confirm what we already know?
Answers
Being made of charged particles, plasmas can do things gases cannot, like conduct electricity. And since moving charges make magnetic fields, plasmas also can have them. In an ordinary gas, all the particles will behave roughly the same way. Auroras, lightning, and welding arcs are also plasmas; plasmas exist in neon and fluorescent tubes, in the crystal structure of metallic solids, and in many other phenomena and objects. The Earth itself is immersed in a tenuous plasma called the solar wind and is surrounded by a dense plasma called the ionosphere.
Plasma is a type of matter in which many electrons freely roam around the nuclei of atoms.
What is plasma?Although plasma is commonly thought of as a subset of gases, the two states behave very differently. Plasmas, like gases, have no definite shape or volume and are denser than solids or liquids.
Plasma is a sort of matter in which numerous electrons freely roam around the nuclei of atoms.
Plasma has been described as the fourth state of matter, alongside solid, liquid, and gas.
Normally, electrons in a solid, liquid, or gaseous sample of matter remain bound to the same nucleus.
Thus, plasma is considered a distinct phase because it does not conform to the standard descriptions and physical laws that are used to describe the standard three states of matter.
For more details regarding states of matter, visit:
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where is an electron located within an atom
Answers
Answer: in the cloud around the nucleus.
Explanation:
got it right
Questions:
1. Which color spectrum has the longest wavelength?
2. Which color spectrum has the shortest wavelength?
3. In a prism, which color is least bent?
4. Which color is most bent?
5. How do you relate the arrangement of colors of the visible light spectrum to its
wavelength?
Answers
#1
Red has the largest wavelength.(750nm)
#2
Blue has the shortest wavelength (400nm)
#3
Red color is least bent.
#4
Violet color is most bent
#5
Attachment attached
An airplane flying at a velocity of 610 m/s lands and comes to a complete stop over a 53 second
period of time.
a. Did this airplane speed up or slow down?
Answers
Answer:
The plane slowed down
Explanation:
To come to a complete stop you must slow down until you stop...
Also the airplane has an acceleration of -11.5 m/s if you need that.
There are normally two types of common cables in your home. Explain why the cables have 2 or 3
wires inside. Why is there not only one?
Answers
Answer:
it's because every wire is different and the insides of it are possitive and negative
Explanation:
hope my answer is correct
What is the force acting on a 0.5 Kg object moving at a rate of 100 m/s2?
Answers
Answer:
50 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question
mass = 0.5 kg
acceleration = 100 m/s²
We have
force = 0.5 × 100 = 50
We have the final answer as
50 NHope this helps you
A star with a mass like the Sun which will soon die is observed to be surrounded by a large amount of dust and gas -- all material it has expelled in the late stages of its life. If astronomers want to observe the radiation from such a giant star surrounded by its own debris, which of the following bands of the spectrum would be the best to use to observe it?
a. gamma-rays
b. x-rays
c. ultraviolet
d. infrared
e. very long wavelength radio waves
Answers
Answer: D. Infrared
Infrared is the best way to observe it.
a car is moving at a constant speed of 100 miles per hour for 2 hour. how far does the car travel?
a. 200 miles
b. 100 miles
c. 2 miles
d. 50 miles
Answers
Answer: a) 200 miles because your doing 2 hours and each hours is 100 miles :)
Can anyone help with this?
Answers
Answer:
Answer:
1. Object
2. Sink
Explanation:
Step-by-step explanation:
1.5 < 1, the object is denser than the fluid
When an object is denser than a fluid it is submerged in, the object will sink.
A bumper car with a mass of 86 kg is traveling at 3.6
m/s. A bumper car with a mass of 98 kg is traveling at
1.6 m/s in the opposite direction. After the collision, the
86 kg bumper car travels at -0.5 m/s. What is the speed
of the 98 kg bumper car after the collision?
Answers
Answer:
2.0 m/s
Explanation:
i found it on quizlet
