Urgent need help 100 points
Suppose that scientists observe violent gas eruptions on a planet with an acceleration due to gravity of 3.6 m/s2.
The jets throw sand and dust about 75 m
above the surface.
What is the speed i
of the material just as it leaves the surface?
Scientists estimate that the jets originate as high‑pressure gas speeds through vents just below ground at about 150 km/h.
How much energy per kilogram of material does the jet lose to nonconservative forces as the high‑speed matter forces its way to the surface and into the air?
Answer: The velocity with which the sand throw is 24.2 m/s.
Explanation:
Explanation:
acceleration due to gravity, a = 3.9 m/s2
height, h = 75 m
final velocity, v = 0
Let the initial velocity at the time of throw is u.
Use third equation of motion
The velocity with which the sand throw is 24.2 m/s.
A 89 kg object is suspended from 2 cables, with an angle of 120 degrees between them. What is the
tension on each cable? (Assume each cable is at an equal angle above the horizontal) Answer in
Newtons.
→ The tension on the cable is 890 N.
The free body diagram is drawed below. Applying the second law of newton:
(you have to transpose the T forces to the 'y' axis). After that:
[tex]\Large \text {$2Tcos(60) = 89 \times 10$}[/tex]
89 x 10 is the Weight Gravitational force (Mass times gravity). Therefore:
[tex]\Large \text {$T = 890$ N}[/tex]
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What do you think causes the rising and sinking of molten rock in the mantle?
Answer:
Heyyy hope this helps
Convection currents describe the rising, spread, and sinking of gas, liquid, or molten material caused by the application of heat.
A golf ball is launched horizontally at a speed of 11 meters per second and a high of 6.4 m above the ground. How long will it take for the golf ball to reach the ground?
The answer is A.
t = ( 2h / g )^1/2 = ( 2 x 6.4 / 9.8 )^1/2 = 1.14s
What experiment determines the upper fixed point of a liquid in a glass thermometer
Explanation:
A flask is half filled with water and heated until the water starts boiling.A thermometer is clamped inside the flask without letting it be in contact with waterThe thermometer is left in the steam such that the bulb is heated by the steam at standard atmospheric pressure.As the bulb is heated, the mercury thread rises up and ehre it remains steady for sometime is marked with a light scratch as the upper fixed point(Add diagram )
Math the words in the box with the sentences below.
In order of appearance on the table;
Magnetic force
Normal force
Gravity
String force
Friction
Contact force
Tension
Non Contact force
Static force
Applied force
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A ball accelerates uniformly at +4.0 m/s2
If the ball was initially moving a +0.20 m/s and the average velocity was +4.2 m/s, then how long will it take it to reach the final velocity?
It will take 1 second to reach the final velocity
Acceleration of a body is the change in velocity of the body with respect to time. This is mathematically represented as;
[tex]a=\frac{v-u}{t}[/tex]
Given the following parameters
a = +4.0 m/s²
u = +0.20m/s
v = +4.2m/s
Substitute the given parameters into the formula to get the time "t"
[tex]4=\frac{4.2-0.2}{t}\\4t=4.2-0.2\\4t=4.0\\t=\frac{4}{4}\\t=1sec[/tex]
This shows that it will take 1 second to reach the final velocity
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To make a solution for an experiment, Gunther needs to add 40 g of a solute to 100 g of water. When making the solution at room temperature, he could only add 34 grams before the solute settled out.
What could he do to dissolve the remaining 6 grams of the solute?
a) Put the solution in an ice bath, dissolve the solute, and let the solution return to room temperature.
b) Heat the solution, dissolve the solute, and let the solution cool verifying nothing settled out.
c) Add more water, boil the solution, and dissolve the solute until the some of the water evaporates.
d) Keep the solution at room temperature, add more water, and dissolve the excess solute.
Answer:
b.
Explanation:
b) Heat the solution, dissolve the solute, and let the solution cool verifying nothing settled out.
Mass can be expressed in
Answer:
mass can be expressed in newtons
explain how siphon works with atmospheric pressure?
Answer:
A siphon is a tube that allows liquid to travel upward, above the surface of the origin reservoir, then downwards to a lower level without using a pump. When a certain amount of water moves over the bend in the siphon, gravity pulls it down on the longer leg lowers the atmospheric pressure in the bend of the siphon.
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Explanation:
A plant uses carbon dioxide and water to form food and oxygen. Why is this a chemical change?
Answer:
because when the plant inhales c02 it exhales oxgen
Explanation:
Answer:
The properties of carbon dioxide and oxygen are different.
Explanation:
A chemical change is defined as something that changes the substance of something (such as the creation of water from hydrogen and water), and can be figured out if chemical or physical based on different changes and properties. Your answer will be The properties of carbon dioxide and oxygen are different because these are two different elements (compounds in case of CO2) that combine to form a different substance, thus changing the identity of the substance.
Photosynthesis is a chemical reaction that occurs in plants by using radiant energy from sunlight. In this chemical reaction, carbon dioxide from the atmosphere and water from the soil are combined to produce sugar (glucose) that contains stored chemical energy.
NEED HELP!!!! 15 POINTS!!!!
Imagine that you are going to make an exercise routine. If your goal was to develop your health rather than one specific improvement, what should be in your plan?
A.
a focus on the benefits of stretching
B.
a variety of aerobic and anaerobic exercises
C.
a single exercise with increasing intensity
D.
an exercise that you have never tried before
PLEASE NO LINKS
Answer:
c
Explanation:
If the goal of the exercise routine is to develop overall health rather than focusing on one specific improvement, a well-rounded approach that addresses various aspects of fitness would be ideal.
This would involve a combination of different types of exercises to promote cardiovascular health, muscular strength, flexibility, and overall well-being. From the given options, the best choices would be:
B. A variety of aerobic and anaerobic exercises: This option is important because it incorporates both cardiovascular exercises (aerobic) and strength-building exercises (anaerobic), ensuring a balanced approach to fitness.
A. A focus on the benefits of stretching: Stretching is important for maintaining flexibility and preventing injuries. Incorporating stretching exercises, such as static and dynamic stretches, can contribute to overall health and mobility.
D. An exercise that you have never tried before: While not as essential as the first two options, trying new exercises can add variety and excitement to your routine. It can also engage different muscle groups and challenge your body in new ways.
C. A single exercise with increasing intensity: While progressively increasing the intensity of a single exercise can be part of a fitness plan, focusing solely on a single exercise may not provide the diverse benefits that a combination of exercises can offer. Variety is key to a well-rounded fitness routine.
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If the mass of an object is 176 and Net force is 50, what would be the Acceleration?
Answer:
0.28m/s²
Explanation:
Force = mass•acceleration
F = m•a
50 = 176•a Divide both sides by 176:
50/176 = a ≈ 0.28 m/s²
At a race car driving event, a staff member notices that the skid marks left by the race car are
10.99 m long as it comes to a stop. The very experienced staff member knows that the
deceleration of a car when skidding is -42.61 m/s2. What can the staff member estimate for
the original speed of the race car if it came to a stop during the skid?
A car that experiences a deceleration of -41.62 m/s² and comes to a stop after 10.99 m has an initial velocity of 30.60 m/s.
A car experiences a deceleration (a) of -41.62 m/s² and comes to a stop (final velocity = v = 0 m/s) after 10.99 m (s).
We can calculate the initial velocity of the car (u) using the following kinematic equation.
[tex]v^{2} = u^{2} + 2as\\\\u = \sqrt[]{v^{2}-2as} = \sqrt[]{(0m/s)^{2}-2(-42.61m/s^{2} )(10.99m)} = 30.60m/s[/tex]
A car that experiences a deceleration of -41.62 m/s² and comes to a stop after 10.99 m has an initial velocity of 30.60 m/s.
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why is the saturated lapse rate less than the dry adiabatic lapse rate?
Answer:
(Hope this helps can I pls have brainlist (crown)☺️)
Explanation:
Lifting a saturated package causes it to expand and cool, resulting in vapour condensation. Condensation will release latent heat, partially counteracting the cooling. As a result, a saturated parcel's adiabatic lapse rate is smaller than an unsaturated parcel's.
Because moist air ascending condenses off its water vapour, the moist adiabatic lapse rate is lower than the dry adiabatic lapse rate (once saturation is attained). The air is considered to be saturated when the dew point temperature and air temperature are identical.
NEED HELP!!! IF YOU ANSWER ALL QUESTIONS I WILL GIVE YOU BRAINEST!!!!! 15 POINTS!!!!
1. Tracking your exercise can help you stick with an exercise routine.
A.
True
B.
False
2. Lola is trying to be healthier, so she has been doing a lot of weight lifting. She can tell that she is really starting to build more muscle. If she is working her muscles, does she need to be concerned about flexibility?
A.
No, any kind of muscle work gets the job done.
B.
Yes, it is best to do as many different kinds of exercise as possible.
C.
Yes, flexibility is a different and important way of working muscle.
D.
No, most people are naturally flexible without much additional work.
3. Many sports that do not explicitly depend on strength work weightlifting into their practices. Why is this a good idea?
A.
Weightlifting is a traditional form of exercise.
B.
Building muscle strength helps with all aspects of fitness.
C.
There are very few ways to build muscles other than weightlifting.
D.
Sports can change their rules and require more strength from athletes.
4. Marina comes from a family with a lot of heart disease. She knows that she will have to go out of her way to make sure that her heart stays strong and healthy. What would be the BEST exercise to achieve this goal?
A.
yoga
B.
bowling
C.
swimming
D.
weightlifting
PLEASE NO LINKS!!!
Answer:
1.A
2.C
3.B
4. i.dk about that one
Explanation:
1. It is true that Tracking your exercise can help you stick with an exercise routine.
2. Yes, it is best to do as many different kinds of exercise as possible.
3. Building muscle strength helps with all aspects of fitness
4. Yoga would be the best exercise to achieve this goal.
What is exercise?Exercise is any activity that utilizes the physical movements of the body that improves a people's health, endurance, and wellbeing while lowering their chance of contracting illnesses. It enables the person to keep their body weight in a healthy weight range.
The benefits of fitness fluctuate depending on the sort of dying a person experiences. Even if a muscle is stretched, excessive sitting can cause a number of illnesses, many of which are fatal. The individual should engage in mobility activities as well as exercising to improve their stamina.
Thus, exercise is very necessary for health.
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A murder has been committed and you are a juror at the trial. The prosecuting attorney has presented evidence that the victim put up a struggle and injured her assailant, drawing blood, prior to her demise. Blood typing was completed and the blood type matches the defendant's blood type. The prosecuting attorney states that this evidence is proof that the defendant is guilty of murder. As a juror, do you think the defendant is guilty of murder based on this evidence? Why or why not? If not, what other evidence do you think is needed?
The fact that the blood type matches that of the defendant is no proof that the defendant is guilty as charged.
There are about four blood types that people can have, these blood types are; A, B, AB and O. Everybody must posses one of these blood types. A person's blood type is determined through laboratory tests.
The prosecuting attorney was wrong in concluding that the defendant is guilty as charged only based on the blood type evidence. different people could have the same blood type. Only DNA analysis can conclusively prove that the defendant is actually guilty as charged.
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Calculating Height
A ski lift is used to transport people from the base of a hill to the top. If the lift leaves the
base at a velocity of 15.5 m/s and arrives at the top with a final velocity of 0 m/s, what is the height of the hill? Round the answer to the nearest tenth.
[tex]\boxed{\sf v^2-u^2=2gh}[/tex]
[tex]\\ \sf\longmapsto h=\dfrac{v^2-u^2}{2g}[/tex]
[tex]\\ \sf\longmapsto h=\dfrac{0^2-15.5^2}{2(10)}[/tex]
[tex]\\ \sf\longmapsto h=\dfrac{240.25}{20}[/tex]
[tex]\\ \sf\longmapsto h=12.012m[/tex]
A large bottle contains a number of medicinal tablets is 0.5kg. Calculate the number of tablets in the bottle?
Answer:
the answer is 5k in the bottle have
X=(150^2•sin(2•42))/9.8
Answer:
2283.3410863
Explanation:
Answer:
2283.341086
Explanation: Just plug the equation into the calculator as is
what is the force that every mass exerts on every other mass? Matter, Weight, Pull, or Gravity.
Answer:
Gravity is a force exerted by masses
Explanation:
The downward pull on the object is due to gravity. is the force that objects exert on each other because of their masses. You are familiar with the force of gravity between Earth and objects on Earth. Gravity is present not only between objects and Earth, however.
draw the well labelled diagram of thermo flask.
Answer:
Here the answer is attached
Explanation:
A dog walks 100m at a bearing of 175 degrees. a) How far did it walk East?
1 kilometer
Explanation:
hope it helps
Answer:
275m
Explanation:
hope it helps
pls give me brainliest
Ayuda porfavor :( doy corona
Answer:(:
Explanation:
1. 19685
2. 26400
3. 47244.1
4. 15.53428
5. 2.1336
6. 3.61111
7. 42240
8. 560
9. 24.384
10. 54
an object applies force of 500n on the area if 10m². find the force exerted
Exerted force is called Pressure.
From,
Pressure = Force/Area
P = 500N/10m²
P = 50N/m²
The force exerted is 50N/m²
the secondary atmosphere of the earth was composed mainly of
how can you reduce the percentage uncertainty in measurements that you make?
Answer:
you can decrease the uncertainty by making the same measurement multiple times and taking the average.
Explanation:
A 2kg book is held against a vertical wall. The coefficient of friction is 0.45. What is the minimum force that must be applied on the book, perpendicular to the wall, to prevent the book from slipping down the wal
We have that for the Question "A 2kg book is held against a vertical wall. The coefficient of friction is 0.45. What is the minimum force that must be applied on the book, perpendicular to the wall, to prevent the book from slipping down the wal" it can be said that the minimum force that must be applied on the book is
F=44N
From the question we are told
A 2kg book is held against a vertical wall. The coefficient of friction is 0.45. What is the minimum force that must be applied on the book, perpendicular to the wall, to prevent the book from slipping down the wal
Generally the equation for the Force is mathematically given as
[tex]F=\frac{mg}{\mu}\\\\F=\frac{2*9.8}{0.45}\\\\[/tex]
F=44N
Therefore
the minimum force that must be applied on the book is
F=44N
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please help me with this
Answer:
the answer is UV Radiation
the chemical compositions of jupiter and saturn are most similar to those of: