Answer:
150 miles
Explanation:
25mph x 6hrs = 150miles
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
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
Variables in physics often include a subscript. What are subscripts used for in physics?
A.) As a numerical coefficient used in multiplication
B.) To accurately juxtapose two congruent terms.
C.) To indicate different versions of the same variable.
D.) To indicate multiplication of the variable.
Answer:
C.) To indicate different versions of the same variable.
Explanation:
Variables in physics often include a subscript. These subscripts are used for indicating different versions of the same variable in physics.
Basically, subscripts are used to represent the beginning (initial) and ending (final) position or point of a variable in physics.
For example, we would look at Gay Lussac' Law of gases.
Gay Lussac law states that when the volume of an ideal gas is kept constant, the pressure of the gas is directly proportional to the absolute temperature of the gas.
Mathematically, Gay Lussac's law is given by;
[tex] PT = K[/tex]
[tex] \frac{P1}{T1} = \frac{P_{2}}{T_{2}}[/tex]
Where;
[tex] T_{1} [/tex] represents the initial temperature.
[tex] T_{2} [/tex] represents the initial temperature.
[tex] P_{1} [/tex] represents the initial pressure.
[tex] P_{2} [/tex] represents the initial pressure.
Note: 1 and 2 are the subscript while T and P are the variables.
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:
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
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:
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:
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:
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.
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:
:)
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.
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
Urgent! Pls help
A bug and windshield of a fast-moving vehicle collide. Which of the following statements does NOT describe this situation?
A) The change in momentum of the bug and the vehicle is the same.
B) The force felt by the bug and the vehicle is the same.
C) The impulse felt by the bug and the vehicle is the same.
D) The acceleration of the bug and the vehicle is the same.
Answer:
The force felt is the same
Explanation:
Can someone pls help me. WILL MARK U BRAINLIEST!!!
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.
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
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:
Which is not an Ultimate Frisbee rule?
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
5. If an object has an acceleration of 0 m/s2, then one can be sure that the object is not ____.
a. moving
b. changing position
c. changing velocity
6. If car A passes car B, then car A must be ____.
a. accelerating.
b. accelerating at a greater rate than car B.
c. moving faster than car B and accelerating more than car B.
d. moving faster than car B, but not necessarily accelerating.
7. Which one of the following is NOT consistent with a car which is accelerating?
a. A car is moving with an increasing speed.
b. A car is moving with a decreasing speed.
c. A car is moving at a high speed.
d. A car is changing direction.
8. A fullback is running down the football field in a straight line. He starts at the 0-yard line at 0 seconds. At 1 second, he is on the 10-yard line; at 2 seconds, he is on the 20-yard line; at 3 seconds, he is on the 30-yard line; and at 4 seconds, he is on the 40-yard line. This is evidence that
a. he is accelerating
b. he is covering a greater distance in each consecutive second.
c. he is moving with a constant speed (on average).
Answer: c
Explanation: for #5 it can still be moving, just at a constant speed; therefore, it will be c.
If an object has an acceleration of 0 m/s2, then one can be sure that the object is not changing velocity.
If car A passes car B, then car A must be moving faster than car B, but not necessarily accelerating.
The not consistent with a car that is accelerating is a car is moving at a high speed.
A fullback is running down the football field in a straight line. He starts at the 0-yard line at 0 seconds. At 1 second, he is on the 10-yard line; at 2 seconds, he is on the 20-yard line; at 3 seconds, he is on the 30-yard line; and at 4 seconds, he is on the 40-yard line. This is evidence that he is moving with a constant speed (on average).
What is Acceleration?Acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities (in that they have magnitude and direction). Speed is the distance covered in a unit of time while acceleration is the rate of change in speed. The unit of speed in the metric system is meters per second (m/s) while that of acceleration is meters per second squared (m/s2). Speed is a scalar quantity while acceleration is a vector quantity.To learn more about acceleration and speed, refer to: https://brainly.com/question/25086037
#SPJ2
A bullet of mass 50 g travelling with a speed of 15ms penetrates into a
bag of sand and is uniformly brought to rest in 0.05s.
Find
(a) How for the bullet will penetrate into the bag of sand?
(b) The Average force exerted by the sand ?
Answer:
a) The bullet will penetrate 0.375 meters into the bag of sand.
b) The average force exerted by the sand is 15 newtons.
Explanation:
The statement is incorrectly written. The correct form is presented below:
A bullet of mass 50 grams travelling with a speed of 15 meters per second penetrates into a bag of sand and is uniformly brought to rest in 0.05 second.
a) How far the bullet will penetrate into the bag of sand?
b) The average force exerted by the sand?
b) The average force exerted by the sand on the bullet ([tex]F[/tex]), measured in newtons, is determined by Principle of Linear Momentum Conservation and Impulse Theorem:
[tex]F = \frac{m\cdot (v_{f}-v_{o})}{\Delta t}[/tex] (1)
Where:
[tex]m[/tex] - Mass of the bullet, measured in kilograms.
[tex]v_{o}[/tex], [tex]v_{f}[/tex] - Initial and final speeds of the bullet, measured in meter per second.
[tex]\Delta t[/tex] - Impact time, measured in seconds.
If we know that [tex]m = 0.05\,kg[/tex], [tex]v_{o} = 15\,\frac{m}{s}[/tex], [tex]v_{f} = 0\,\frac{m}{s}[/tex] and [tex]\Delta t = 0.05\,s[/tex], then the average force exerted by the sand is:
[tex]F = \frac{(0.05\,kg)\cdot \left(0\,\frac{m}{s}-15\,\frac{m}{s} \right)}{0.05\,s}[/tex]
[tex]F = -15\,N[/tex]
The average force exerted by the sand is 15 newtons.
a) The distance travelled by the bullet ([tex]\Delta s[/tex]), measured in meters, is determined by application of Principle of Energy Conservation and Work-Energy Theorem:
[tex]\Delta s = \frac{m\cdot (v_{f}^{2}-v_{o}^{2})}{2\cdot F }[/tex] (2)
If we know that [tex]m = 0.05\,kg[/tex], [tex]v_{o} = 15\,\frac{m}{s}[/tex], [tex]v_{f} = 0\,\frac{m}{s}[/tex] and [tex]F = -15\,N[/tex], then the distance travelled by the bullet is:
[tex]\Delta s = \frac{(0.05\,kg)\cdot \left[\left(0\,\frac{m}{s} \right)^{2}-\left(15\,\frac{m}{s} \right)^{2}\right]}{2\cdot (-15\,N)}[/tex]
[tex]\Delta s = 0.375\,m[/tex]
The bullet will penetrate 0.375 meters into the bag of sand.
According to Newton’s second law of motion, what is force equal to?
Answer:
Force is equal to Mass Multiplied by Acceleration
F = M x A
Answer:
Newton's second law of motion is F = ma, or force is equal to mass times acceleration.
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 :)
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 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
#SPJ2
Determine Average Speed.
Total distance = 800 mi
Total time = 10 hr
Explanation:
Average Speed.=Total distance/Total time=800/10=80m/hour
When more energy is released when new bonds are formed. Which bonds are stronger. Please add why
1. The bonds that are formed
2. The bonds that are broken
Answer:
the bonds that are formed
Explanation:
Energy is absorbed in order to break bonds. Energy is released when new bonds are formed. Bond-making is a process of exothermic. Whether the reaction is endothermic or exothermic refers to the difference between the energy needed to break bonds and the energy released when new bonds are formed.
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