Answer:2 increase
Explanation:
Which is not an Ultimate Frisbee rule?
Please help with this?!?!?!?!?!?!
Answer: c because our solar system is called the milky way
Explanation:
What type of reaction feels cold to the touch? A. Endothermic, because energy is being released into the surroundings B. Endothermic, because energy is being absorbed from the surroundings C. Exothermic, because energy is being released into the surroundings D. Exothermic, because energy is being absorbed from the surroundings
Answer:
D. Exothermic, because energy is being absorbed from the surroundings
Explanation:
This is true about the Exothemic reaction due to the fact that, the reaction occurs outside the body. During this reaction, the energy being absorbed from the surrounding environment will hit the body surface thereby creating the coldness due to the heat given out from the body being minimal.
Answer:
Endothermic, because energy is being absorbed from the surroundings.
Explanation:
Can someone pls help me. WILL MARK U BRAINLIEST!!!
What is the kinetic energy of a 25kg object moving at a velocity of 2.5 m/s
Answer:
78j
Explanation:
78.125J to be exact
4. A car is accelerating at 40 m/s2, if the car is 400 kg how much force
must be supplied from the engine?*
How does a balanced Chemical Equation Satisfy the Law of Conservation of Mass?
A. During a chemical reaction, the total amount of matter stays the same.
b. During a chemical reaction, matter is destroyed.
c. During a Chemical reaction, one ore more new substances formed.
d. During a chemical reaction, the total number of atoms increases.
Which has a larger acceleration, a car or a person running?
Answer:
A car
Explanation:
20 points+ Brainliest
A sturdy metal cylinder used for scuba diving is filled with air. The air in the cylinder is heated but the gas is not able to expand. Which type of process has occurred?
A. Isobaric
B. Isothermal
C. Isochoric
D. Adiabatic
Answer:
The answer is B. hope this helps
Explanation:
HELPPPPP!
which of the following is a human action that could lead to decreased amounts of greenhouse gases found in the atmosphere, such as carbon dioxide?
A ) Generating energy by burning coal
B ) Deforestation
C ) Driving automobiles
D ) Planting trees
Which of the following areas of the sun is where energy is transferred very slowly, sometimes taking up to 100,000 years, by electromagnetic radiation?
A. the radiation zone
B. the core
C. the convection zone
D. the solar flares
A phonograph record 0.15 m in its radius rotates 18 times per 90 seconds what is the frequency?
Answer:
The frequency of the phonograph record is 0.2 Hz
Explanation:
The frequency of an object moving in uniform circular motion is the number of completed cycles the object makes in a specified time period
The given parameters of the phonograph record are;
The radius of the record = 0.15 m
The number of times the phonograph record rotates, n = 18 times
The time it takes the phonograph record to rotate the 18 times, t = 90 seconds
The frequency of the phonograph record, f = (The number of times the phonograph record rotates) ÷ (The time it takes the phonograph record to rotate the 18 times)
∴ The frequency of the phonograph record, f = n/t = 18/(90 s) = 0.2 Hz
The frequency of the phonograph record = 0.2 Hz.
Describe how computer climate models help scientists understand possible future climate changes. How reliable are these computer models in making predictions about global warming? Discuss any limitations in these models.
Answer:
To predict future climate, scientists use computer programs called climate models to understand how our planet is becoming different. Climate models work like a laboratory in a computer. They allow scientists to study how the unlike factors interact to influence a region's climate.
Now a new evaluation of global climate models used to project Earth's future global average surface temperatures over the past half-century answers that question: most of the models have been reasonably accurate.
Explanation:
I got a 100% on this assignment copy it and put it on your notes then go sentence by sentence copy but dont highlight any "." you will not be able to paste it into the box add the "." after you paste it, it one sentence.
ONE SENTENCE AT A TIME NO ". ' - or :" AT ALL
If you are in a car that is being pulled down a 56 m path with a force of 12.5
N, what is the work being done?
Answer:
answer is 700 joules
Explanation:
work is equal to force into displacement
W=12.5*56
700 joules
Determine Average Speed.
Total distance = 800 mi
Total time = 10 hr
Explanation:
Average Speed.=Total distance/Total time=800/10=80m/hour
Learning good work ethics will help you develop _____.
the ability to begin tasks
a healthy identity
a sense of industry
neither
Answer:
a sense of industry
Explanation:
I just had this question and got it right
Please HELP ME If the motion of an object changes, what must be true about the forces acting on that object?
Answer:
If there is a net force acting on an object, the object will have an acceleration and the object's velocity will change. ... Newton's second law states that for a particular force, the acceleration of an object is proportional to the net force and inversely proportional to the mass of the object.
Explanation:
If the motion of an object changes, the net force on the object is greater than zero or the forces acting on the object is unbalanced.
According to Newton's second law of motion, the force applied to an object is directly proportional to the product of mass and acceleration of the object. The object will move in the direction of the applied force.
When the net force on an object is zero, the object will be remain at rest.
However, when the net force on object is greater than zero, the object will move in the direction of the greater force.
Thus, we can conclude that if the motion of an object changes, the net force on the object is greater than zero or the forces acting on the object is unbalanced.
Learn more here:https://brainly.com/question/19887955
An aircraft flying at a steady velocity of 70 m/s eastwards at a height of 800 m drops a package of supplies. a) Express the initial velocity of the package as a vector
Answer:
Explanation:
If unit vector towards east is represented by i in the present case ,
initial horizontal velocity of aircraft towards east is 70 m /s . The package dropped by the aircraft will also have same velocity while getting separated from the aircraft . Hence its velocity is represented by the vector ,
v = 70 i .
Its vertical velocity of package at that time will be zero so
v = 70 i + 0 j
= 70 i
Initial Velocity can be defined as the velocity at which the motion starts.
Initial Velocity for the package is [tex]70i[/tex].
Given that an aircraft flying at a steady velocity of 70 m/s eastwards at a height of 800 m.
Here we express the steady velocity as [tex]u\;\rm m/s[/tex]. Distance is expressed by [tex]d\;\rm meter[/tex]. Initial Velocity can be expressed as [tex]v\;\rm m/s[/tex].
Initial velocity can be calculated by the formula given below.
[tex]v\;=\;u\;+\;at[/tex]
In the above formula, [tex]a[/tex] is expressed the acceleration and [tex]t[/tex] is expressed the time of the motion.
For the initial velocity, time [tex]t\;=\;0[/tex] because motion starts in the vertical direction. Let us assume that unit vector can be expressed by [tex]i[/tex] and [tex]j[/tex].
Initial velocity formula in vector form is given below.
[tex]v\;=\;ui\;+\;atj[/tex]
By substituting all the values in the above formula, initial velocity is
[tex]v\;=\;ui\;+\;a\times0j\\v\;=\;ui\\v\;=\;70i[/tex]
So the initial velocity of the package is 70[tex]i[/tex].
For more details about the velocity, follow the link given below.
https://brainly.com/question/862972.
What could you detect using a magnet and iron filings?
Answer:
A compass can detect a magnetic field and show its direction. Iron filings can show the shape of a magnetic field. A gaussmeter can detect a field and indicate its strength.
Explanation:
If 20 N force does 400 J
of work to move an
object, how far does the
object move?
Answer:
20
Explanation:
W = F*d
400 = 20*d
d = 20
OMEWORK EXERCISE: DESIGNING AN INVESTIGATION USING SCIENTIFIC METHOD:
Observation: Mrs. Ntuli has two different kinds of pots in her kitchen. The food always seems to
cook quicker when she uses the aluminum pots than when she uses the enamel pots.
Write a scientific report with the following headings:
• Hypothesis
Aim
Apparatus
Variables
Method
Results (including a suitable graph)
Conclusion
Evaluation
Answer:
Aim: To investigate which material of pot will cook food quicker.
Hypothesis: The (aluminum/enamel) pots will cook the food quicker than the (aluminum/enamel) pots.
Apparatus:
- Aluminum pots
- Enamel pots
- Stove top
Variables:
Independent variable (What will be changed) - Material of pot
Dependent variable (What's being measured) - Time taken for food to cook
Controlled variables (What's staying the same) - Size of pot, type of food being cooked, quantity of food being cooked, stove top
Method:
Place aluminum pot on stove top and turn on stove topCook your chosen food in the potRecord time taken for food to cookRepeat steps 1-3 another 2 timesPlace enamel pot on stove top and turn on stove topCook chosen food in the potRecord time taken to cookRepeat steps 5-7 another 2 timesResults: (I don't have results because i never conducted this experiment)
Conclusion: This experiment showed that (aluminum/enamel) pots cooked the food quicker than (aluminum/enamel pots). These results (supported/rejected) my hypothesis.
Evaluation: (Never did the experiment, so there's nothing to evaluate)
Explanation:
I hope this helps :)
What is the force on a 1000 kg elevator that is falling freely at 9.8 m/ sec²?
Answer:
f=m.a 1000*9.8=9800newton
How do you determine the height of a wave?
Answer:
Wave height is the vertical distance between the crest (peak) and the trough of a wave. Some other definitions: Still-Water Line is the level of the lake surface if it were perfectly calm and flat. Crest is the highest point on the wave above the still-water line.
Explanation:
When a baseball is thrown straight upward, what is its acceleration at its greatest height? Please explain your answer.
9.8 m/s2 downward
9.8 m/s2 upward
9.8 m/s2 horizontally
0 m/s2
Answer: A
Explanation:
The acceleration of gravity is always 9.8 m/s^2 downwards, even if the velocity is 0 m/s.
ASNWER THIS OR ILL KIDNAPP YOUR DOG AND REVEAL YOUR SEARCH HISTORY!!
Name 3 different forces that act on objects on the Earth
Answer:
Applied Force.
Gravitational Force.
Normal Force.
Frictional Force.
Air Resistance Force.
Tension Force.
Spring Force.
Explanation:
:)
ILL GIVE BRAINLIEST !!!!!!!!!!! Do some research, and look up the difference between the zinc-carbon battery described on the
previous page, and the alkaline battery (shown at the left), which is another common dry cell that we
use every day. What are the electrodes made of in the alkaline battery? The electrolyte? Does one type
have an advantage over the other?
Create a few paragraph essay describing your findings to your teacher.
Answer:
The alkaline battery gets its name because it has an alkaline electrolyte of potassium hydroxide instead of the acidic ammonium chloride or zinc chloride electrolyte of the zinc-carbon batteries. An electrolyte is a substance that produces an electrically conducting solution when dissolved in a polar solvent, such as water. The dissolved electrolyte separates into cations and anions, which disperse uniformly through the solvent. Electrically, such a solution is neutral.Advantages. One of the advantages of alkaline batteries over other primary batteries and rechargeable batteries is that it has higher energy density. It has longer shelf life than batteries with chloride-type electrolyte. It could last to up to seven years unused, losing about five percent of its energy every year.
Explanation:
What is the effect of temperature on the solubility of a solid in a liquid? Check all correct elements that you included in your question. format: "What is the effect of X on Y?" materials: solid dissolved in a liquid independent variable: temperature dependent variable: solubility
Answer:
materials: solid dissolved in a liquid
independent variable: temperature
Explanation:
I got it right
Which of the following has the most kinetic energy?
A. stretching a rubber band
B. a jet flying through the air
C. throwing a paper airplane
D. pitching a baseball
A vector has an x-component
of 6.15 m and a y-component
of -3.88 m.
Find the magnitude of the
vector.
Answer:
please find attached file
Explanation:
The magnitude of the vector is 7.27m .
What is magnitude of a vector?The magnitude of a vector is the numerical value of the vector. It is represented by the length of the vector.
When a vector is resolved in two components then it is given by formula,
[tex]A = \sqrt{Ax^{2}+Ay^{2} }[/tex]
Here,
[tex]A_{x} = 6.15\\A_{y} = 3.88[/tex]
A = [tex]\sqrt{6.15^{2}+3.88^{2}[/tex]
A = 7.27m
Hence magnitude of the vector is 7.27m .
To know more about vector here
https://brainly.com/question/13322477
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HELPP!! what is not true about mitosis??
A. The chromosomes in the daughter cells half the number from the parent cell.
B. The chromosomes in the daughter cells are the same number as the parents cell.
C. Each nuclei is identical to the parent nucleus.
D. The four main stages are prophase,metaphase,anaphase, and telophase.
Answer:
I think its A
Explanation: