The space shuttle slows down from 1200 km/hr to 400 km/hr over 10 seconds. What is the space shuttles deceleration?
Answers
That's if the answer should be in m/s2.
Related Questions
Which statement is
rue
about acceleration?
O A.
It is the rate of change of speed per unit time.
OB
It is the rate of change of displacement per unit time.
C.
It is the rate of change of velocity per unit time.
D.
It is the rate of change of position per unit time,
Answers
Answer:
A
Explanation: This is the correct answer
Answer:
yeyeyeyeyeye
Explanation:
A 20-car train standing on the siding is started in motion by the train’s engine. 2 cm slack is between each of the cars, which are 11 m long. The engine is tightly connected to the first car and moves at a constant speed of 21 cm/s. How much time is required for the pulse to travel the length of the train? Answer in units of s.
Answers
Answer:
1.81 s
Explanation:
From the given information:
The links between the cars are:
1-2, 2-3, 3-4, 4-5, 5-6, 6-7, 7-8, 8-9, 9-10, 10-11, 11-12, 12-13, 13-14, 14-15, 15-16, 16-17, 17-18, 18-19, 19-20.
where;
1 denotes the first car that joins strongly attached to the engine.
There are 19 links from the above connections and each one of them has a 2 cm slack.
Thus; the total slack = 2 × 19 = 38 cm
However, the speed of the train = 21 cm/s
Then, the time taken by the pulse to travel the length of the train is expressed by using the formula:
= length / speed
= 38 / 21
= 1.81 seconds
Thus, the required time = 1.81 s
A cork floats on the surface of an incompressible liquid in a container exposed to atmospheric pressure. The container is then sealed and the air above the liquid is evacuated. The cork:
Answers
Question:
A cork floats on the surface of an incompressible liquid in a container exposed to atmospheric pressure. The container is then sealed and the air above the liquid is evacuated. The cork:
A. sinks slightly
B. rises slightly
C. floats at the same height
D. bobs up and down about its old position
Answer:
The correct answer is C) floats at the same height
Explanation:
The liquid is incompressible because its density very high and leaves no room for further compaction whether or not there is atmospheric pressure. So when you put a cork on the liquid, pressure or no pressure, there is no displacement hence it floats on the same height regardless of the absence of air.
Cheers!
Two children are spinning on a miracle round. What is 50 cm from the center and the other is 100 cm from the center. Which child has the larger linear speed?
Answers
Answer:
The one that is 100 cm from the center.
Explanation:
Given that merry-go-round means moving at uniform circular motion or constant angular speed. Hence the person who is closer to the center is moving at a slower speed, while the one far away from the center has a larger linear speed because he has moved a long distance in the same amount of time, despite being on these objects.
To illustrate
A with the 50 cm
B with the 100 cm
Hence, to get speed, we have
A = 2 * pi * 50 / T
B = 2 * pi * 100 / T
And by the explanation of angular speed
We have w = 2*pi/T where w is the angular speed in radians/s
Hence we have
A = 50w
B = 100w
Therefore, the one that is 100 cm from the center has a larger linear speed.
Extrusive (lava) igneous rocks form
under the earth's surface
from fragments of other rocks
when molten rock cools above the earth's surface
Answers
Answer:
when molten rock cools above the earth's surface
Explanation:
Extrusive Igneous Rocks Extrusive igneous rocks are formed when molten magma spill over to the surface as a result of a volcanic eruption. The magma on the surface (lava) cools faster on the surface to form igneous rocks that are fine-grained.
Please help me with this
Answers
Answer:
a i. The higher curve is "thick wall" and the lower curve is "thin wall".
a ii. The thicker the wall, the more time it takes to transfer the same amount of heat. Thus, the thick wall would have a less steep drop in temperature as it transferred lesser heat from the room to the surroundings and the thinner wall would have a steeper drop in temperature as it conducted more heat away from the room to the surroundings.
A circular coil of wire, with N turns of radius a, is located in the field of an electromagnet. The magnetic field is perpendicular to the coil (that is, parallel to the axis of the coil) and its strength has the constant value B, over that area. The coil is connectd by a pari of twisted leads to an exteranl resistance. The toal resistance of this closed circuit, including that of the coil itself, is R. Suppose the electromagnet is turned off, its field dropping rapidly to zero. The induced electromotive force causes current to flow around the circuit. Derive a formula for the total charge Q = Sidt that passes through the resistor and explain why it does not depend on the rapidity with which the field drops to zero.
Answers
Answer:
they are going to attract
Explanation:
2. What is the relationship between the distance of two objects and the gravitational force
between them?
Answers
how can we calculate acceleration in motion which is not uniform or uniformly accelerated please help tell me another formula to calculate acceleration
Answers
Answer:
These are some of the ones I found or know of.
Explanation:
F=ma
A= v-u/t
A= v^2/r
wheres my lil mama?
Answers
Answer:
Explanation:
I FOUND YOUUU
Answer:
300,000
Explanation:
right here dad_0 ;) u got snap?
why mechanical energy system is constant
Answers
Answer:
Mechanical energy is constant and it remains the sum of the potential and kinetic energies in a system.
In the system, we have inverse relation between potential and kinetic energies so it will make mechanical equal
Please help on this one ASAP please
Answers
Answer:
friction
Explanation:
there is greater friction on the carpet than on the bare floor making the object go slower:)
Every winter I fly to Michigan. It takes 5 hours. What is my average speed?
Answers
Once a metamorphic rock, always a metamorphic rock. Rocks cannot change from one type of a rock to another.
true or false?
Answers
Answer:
False
Explanation:
Metamorphic rock can melt into magma or weathers down (erosion) into sediments.
A student is measuring the volumes of nectar produced by a flowering plant for an experiment. He measures nectar from 50 flowers using a graduated cylinder that measures to the nearest milliliter(mL). Which statement describes a change that could help improve the results of his experiment
Answers
The question is incomplete, the complete question is;
A student is measuring the volumes of nectar produced by a flowering plant for an experiment. He measures nectar from 50 flowers using a graduated cylinder that measures to the nearest millilitre (mL). Which statement describes a change that can help improve the results of his experiment?
A.) His measurements will be more precise if he takes measurements from an additional 100 flowers. B.) His measurements will be more accurate if he uses a graduated cylinder that measures to the nearest tenth of a mL. C.) His measurements will be more precise if he uses a graduated cylinder that measures to the nearest tenth of a mL. D.) His measurements will be more accurate if he takes measurements from an additional 100 flowers.
Answer:
His measurements will be more accurate if he uses a graduated cylinder that measures to the nearest tenth of a mL.
Explanation:
In the measurements of volume using most graduated cylinders, the cylinders are calibrated to the nearest tenth owing to the uncertainty in the measurement of volume.
Hence if a cylinder has measures to the nearest milliliter(mL), then he can improve his experiment by using a graduated cylinder that measures to the nearest tenth of a mL
Leena is a 16-year-old girl. She complains of tiredness and loss of appetite. She is unable to concentrate on her studies and appears pale and unhealthy. Her mother took her to the doctor. The doctor told her that it was because of her poor diet. What condition is she likely to have?
Answers
Answer: Her condition most likely is fatigue.
Explanation:
Any one please give me the correct answer of this question???
I hope you can help me...
Answers
Answer:
no one ever amswers my questions
Why do people celebrate Christmas
Answers
Answer:
Yes, for most, but not all people.
Explanation:
Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions. Qualitative and Quantitative Data Explain why it is important to use both qualitative data and quantitative data.
Answers
Answer: It is important to use both QUALITATIVE and QUANTITATIVE data because the limitations of one type of data are counteracted by the advantages of the other.
Explanation:
QUALITATIVE data defined as type of data that centers on the measurement of the features of the subject under study. This is obtained through careful observations. It is a non numerical type of data. Some examples includes: sex(male or female), name, and colours. The limitations of using only qualitative data for a research includes:
--> it can not be statistically represented
--> the results can not be verified
--> it is time consuming and
--. It requires alot of labor.
QUANTITATIVE data is defined as the type of data that centers on the measurement of the amount and quantity of the subject under study. It can be used to conduct a large study than qualitative data. Examples include the heights and weights of students. The limitations of quantitative research includes:
--> poor representation of target population
--> inability to control the environment and
--> lack of resources for data collection.
Therefore, It is important to use both QUALITATIVE and QUANTITATIVE data analysis because the limitations of one type of data are counteracted by the advantages of the other. I hope this helps, thanks!
Answer:
Using a combination of qualitative and quantitative data can improve an evaluation by ensuring that the limitations of one type of data are balanced by the strengths of another. This will ensure that understanding is improved by integrating different ways of knowing.
Explanation:
A worker assigned to the restoration of the Washington Monument is checking the condition of the stone at the very top of the monument. A nickel with the mass of 0.005 kg is in her shirt pocket. What is the kinetic energy (KE) of the nickel in her shirt pocket at the top of the monument?
Answers
Answer:
Your answer is: K.E = 8.3 J
Explanation:
If the height (h) = 169.2 meters (m) and the mass (m) is 0.005 kilograms (kg) the total energy will be kinetic energy which is equal to the potential energy.
K.E = P.E and also P.E equals to mgh
Then you substitute all the parameters into the formula ↓
P.E = 0.005 × 9.81 × 169.2
P.E = 8.2908 J
So your answer is 8.2908 but if you round it is K.E = 8.3
what is the direction of the sum of these two vectors?
Answers
Answer:
what is the direction of the sum of these two vectors?
Answer:
69.6
Explanation:
Ax= 0
Ay= 63.5
Bx= 101 cos 57= 55.009
By= 101 sin 57= 84.706
Tan-1 = (84.706/55.009)
= 69.6
How much does a 3.0 kg bag of bolts weigh?
A) 7.2 N
B) 14.4 N
C) 22.8 N
D) 29.4 N
E) 58.8 N
Answers
Answer:
29.4N is a 3.0kg bag of bolts weigh.
The force by gravitation is called the weight of a body. The weight of the body with a mass of 3 Kg is 29.4 N.
What is gravitational force?Gravitational force is a kind of force by which an object attracts other objects into its center of mass. Earth attracts every objects into its center and thereby we are all standing on the surface.
Gravitational force is acting downward on a body and it depends on the mass of the body. Greater the mass, greater will be the fore of gravitation and its weight experienced on earth.
Given that, mass of the bag = 3 Kg.
force by gravitation = Mg = 3 × 9.8 m/s² = 29.4 N.
where, g is the acceleration due to gravity. Therefore, the weight of the bag is 29.4 N. Hence, option D is correct.
To find more on gravitational force, refer here:
https://brainly.com/question/12528243
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An airplane flies with a constant speed of
620 miles per hour. How far can travel in
270 minutes?
Please explain if possible :)
Answers
Divide 270 by 60 to find the number of hours the plane is flying.
270/60 = 4.5
The plane will fly for 4.5 hours. Speed * time = Distance (make sure units are the same)
620mph*4.5hr = 2,790 miles
Which of the following objects had the greatest force applied to it? *
A) An object with a mass of 10 kg and an acceleration of 2.5 m/s^2
B) An object with a mass of 12 kg and an acceleration of 3.0 m/s^2
C) An object with a mass of 20 kg and an acceleration of 1.5 m/s^2
D) An object with a mass of 15 kg and an acceleration of 1.0 m/s^2
Answers
Answer:
B) is the answer
Explanation:
A) is 25 N
B) is 36N
C) is 30N
D)15N
please help, question is timed...
Answers
Answer:
65
Explanation:
50+3*5
You kick a soccer ball across a field the ball travels across the field and slowly comes to a stop. Since the ball slowly comes to a stop what does that mean about the acceleration of the ball?
Answers
Answer:
the acceleration is negative which means it is going in the opposite direction of the actual motion which concludes the reason why the ball is slowing down. However, when the ball is stopped, there is no acceleration as the ball is in equilibrium
Explanation:
Which phrase best describes the dorsal nerve cord?
A. A group of interconnected neurons that enables response to stimuli
B. A group of similar nerve cell bodies grouped together
C. A stiff, nonconducting rod that develops down the back of all chordate embryos
D. A thick grouping of nerves that runs down the back of the embryo
Answers
Answer:
D
Explanation:
I t0ook the test and chose B and it was wrong and the answer was D.
Answer:
A thick grouping of nerves that runs down the back of the embryo
Explanation:
work done per unit time :- a. force b. power c. energy d. momentum
Answers
A bowling ball moves 18 meters every 2 seconds down the lane at a bowling alley. What is the speed of the bowling ball?
Answers
Answer:
9m/s
Explanation:
18/2 = 9m/s
The amount of kinetic energy in a moving object depends on its mass and what
Answers
Answer:
Kinetic energy depends on mass and speed (or magnitude of velocity).
K.E. = 1/2 M S² or The amount of kinetic energy of a moving object has dependence on its mass and its velocity.
Explanation: They are both right for a certain question
The kinetic energy of a moving object depends on its mass and velocity. The higher the velocity higher will be the kinetic energy. Mass also have the similar effect.
What is kinetic energy?Kinetic energy of an object is the energy generated by virtue of its motion. When particles of an object acquire much energy to overcome the intermolecular force, they gain kinetic energy to move apart.
Kinetic energy is related to the mass and velocity of the moving object. The expression relating kinetic energy with these parameters is written below:
Ke = 1/2 mv².
As per the relation, the kinetic energy of an object increases with an increase in mass or velocity or both. Hence, massive objects with greater velocity is having greater kinetic energy.
Find more on kinetic energy:
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