Answer:
B
Explanation:
Test
A car has uniformly accelerated from rest to a speed of 25m/s after traveling 75m. What is its acceleration in m/s^2
Which of the following is the force that slows abook sliding on a table?
Answer:
Friction
Explanation:
Well things that rub off of each other reacts friction
Which question requires the collection of data to answer it?
A. How much water does a peach tree require to produce fruit?
B. Are peaches more delicious than apricots?
C. Do peaches go better with ice cream or yogurt?
D. Why are peaches such a popular fruit?
Answer:
a
Explanation:
b, c, and d are all opinion based, a is the only one that you need factual evidence and observations.
Satement A is the only one for which you require factual information and observations; B, C, and D are all opinion-based options (A) is correct.
What are statistics?Statistics is a mathematical tool defined as the study of collecting data, analysis, understanding, representation, and organization. Statistics is described as the procedure of collecting data, classifying it, displaying that in a way that makes it easy to understand, and analyzing it even further.
It is given that:
The question statement is:
Which question requires the collection of data to answer it?
A. How much water does a peach tree require to produce fruit?
B. Are peaches more delicious than apricots?
C. Do peaches go better with ice cream or yogurt?
D. Why is peached such popular fruit?
From the above statements, A is the only one for which you require factual information and observations; B, C, and D are all opinion-based.
As we know, the act of acquiring and analyzing data on certain variables in an established system allows one to analyze results and respond to pertinent inquiries.
In all academic disciplines, including the physical and social sciences, the humanities, and business, data collecting is a necessary component of research.
Thus, statement A is the only one for which you require factual information and observations; B, C, and D are all opinion-based options (A) is correct.
Learn more about the statistics here:
brainly.com/question/8058700
#SPJ2
Two identical stones are simultaneously launched horizontally from two slingshots at
the same height. Stone A is launched with an initial speed of 5 m/s. Stone B is
launched with an initial speed of 1 m/s. Which stone hits the ground first, and where
do they land?)
Answer:
a) Both stones hit at the same time, b) Stones A and B will land at a distance of [tex]2.26\sqrt{y_{o}}[/tex] and [tex]0.452\sqrt{y_{o}}[/tex] meters, respectively.
Explanation:
Each stone experiments a parabolic motion, that is, the combination of a horizontal motion at constant velocity and a vertical uniform accelerated motion due to gravity. We know that each stone is launched horizontally at the same height and from the same initial position.
The equations of motion for each stone are described below:
Stone A
[tex]x_{A} = x_{o} + v_{A,o}\cdot t_{A}[/tex]
[tex]0 = y_{o} + \frac{1}{2}\cdot g\cdot t_{A}^{2}[/tex]
Stone B
[tex]x_{B} = x_{o} + v_{B,o}\cdot t_{B}[/tex]
[tex]0 = y_{o} + \frac{1}{2}\cdot g\cdot t_{B}^{2}[/tex]
a) Which stone hits the ground first?
The stone that hits the ground first has the lowest time. If we know that [tex]v_{A,o} = 5\,\frac{m}{s}[/tex], [tex]v_{B,o} = 1\,\frac{m}{s}[/tex], [tex]x_{o} = 0\,m[/tex] and [tex]g = -9.807\,\frac{m}{s^{2}}[/tex], then the equations of motion are reduced into this:
Stone A
[tex]x_{A} = 5\cdot t_{A}[/tex] (Eq. 1)
[tex]y_{o} -4.905\cdot t_{A}^{2}= 0[/tex] (Eq. 2)
Stone B
[tex]x_{B} = t_{B}[/tex] (Eq. 3)
[tex]y_{o} -4.905\cdot t_{B}^{2}= 0[/tex] (Eq. 4)
From (Eq. 2) and (Eq. 4), we get that [tex]t_{A} = t_{B}[/tex].
Both stones hit at the same time.
b) Where do they land?
From (Eq. 2) and (Eq. 4), we get:
[tex]y_{o} = 4.905\cdot t^{2}[/tex]
The time is cleared within the expression:
[tex]t =\sqrt{\frac{y_{o}}{4.905} }[/tex]
[tex]t \approx 0.452\sqrt{y_{o}}[/tex]
And from (Eq. 1) and (Eq. 3), we get the following equations of motion:
[tex]x_{A}= 5\cdot t[/tex]
[tex]x_{B} = t[/tex]
The horizontal distance taken by each stone is calculated by direct substitution on each expression:
[tex]x_{A} = 2.26\sqrt{y_{o}}\,m[/tex]
[tex]x_{B} = 0.452\sqrt{y_{o}}\,m[/tex]
Stones A and B will land at a distance of [tex]2.26\sqrt{y_{o}}[/tex] and [tex]0.452\sqrt{y_{o}}[/tex] meters, respectively.
Describe the process by which an electromagnetic wave is produced.
A. An electrically charged particle vibrates, producing only an electric field that moves.
B. An electrically charged particle vibrates, producing electric and magnetic fields.
C. A magnetic field and an electric field collide, producing energy and light.
D. Radio waves break down into smaller wavelengths, producing new waves.
Answer:Im doing that same quiz rn and i just put A
Explanation:
this is because EM energy is produced when electrically charged participles vibrate generating an electric filed and a magnetic field which sends out an EM wave.
i hope this helped
How far would a jet going 155 m/s travel in 9 s?
Answer:
1,395 m
Explanation:
155×9
multiply m/s by 9s
Consciousness is still a controversial issue among psychologists and philosophers.
T
F
please be fasttt
Consciousness is still a controversial issue among psychologists and philosophers is a true statement.
What is Consciousness?You experience everything as consciousness. It is the song that keeps playing in your head, the sweetness of chocolate mousse, the agonizing pain of a toothache, the passionate love you have for your child, and the painful realization that these emotions eventually pass.
From the earliest ages of antiquity till the present, the origin and nature of these experiences, also referred to as qualia, have remained a mystery.
Many contemporary analytic philosophers of mind, probably most notably Daniel Dennett of Tufts University, claim that consciousness is an illusion because they find it to be such an awful affront to what they feel should be a meaningless cosmos of matter and the void.
Therefore, Consciousness is still a controversial issue among psychologists and philosophers is a true statement.
To learn more about philosopher, refer to the link:
https://brainly.com/question/13034448
#SPJ6
what happen to tbe brightness when one of the bulb removed from patallel circiut
like the 3 musketeers aye i need blow it back out
Answer:
hey hey bnaddy
Explanation:
Explain the relationship between citizenship and the right to vote:
A wooden block is pulled at a constant acceleration of 1.4 m/s2. Find the net applied force on the block if its mass is 0.6 kg.
Answer:
F = 0.84 [N]
Explanation:
In order to solve this problem we must take into account Newton's second law, which tells us that the sum of all forces applied on a body must be equal to the product of the mass of the body by its acceleration.
F = m*a
where:
F = force [N]
a = acceleration = 1.4[m/s^2]
m = mass = 0.6 [kg]
F = 0.6*1.4
F = 0.84 [N]
Any Help??? Dued before 2:30pm and it's 9:30am by me... so please take yuh time and ans.... jus ans 1 if you want... This is for course marks.... I appreciate all efforts❤
Answer:
The methodology employed by Galileo contributed to the development of Physics by find moons of Jupiter. (I think)
sorry if it's wrong
Answer:
yes
Explanation:
Newton's first law of motion is also called Law of Inertia explain
Explanation:
Newton's first law of motion states that a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This is also known as the law of inertia. Inertia is the tendency of an object to remain at rest or remain in motion.
Explanation:
Inertia is the tendency of an object toremain at rest or, if moving, to continue its motion in a straight line at uniform velocity.
Newton's First Law of MotionObject will remain at rest or move at uniform velocity unless acted upon by an external force
Hope this is correct and helpful
HAVE A GOOD DAY!
A box is at rest on a table. What can you say about the forces acting on the box?
The upward _____and the downward______are balanced.
applied force
frictional force
normal force
drag force
gravitational force
tension
Answer:
gravitational force
Explanation:
A student puts a beaker of boiling water where it touches a block of ice. Which two statements are true? A. Thermal energy will move from the boiling water to the ice. B. Thermal energy will move from the air to the ice. O C. Thermal energy will move from the ice to the air D. Thermal energy will move from the air to the boiling water.
A student puts a beaker of boiling water where it touches a block of ice. The two true statements are that the thermal energy will move from the boiling water to the ice and the thermal energy will move from the air to the ice. Therefore the correct options are options A and option B.
What is the boiling point?
It is a temperature at which the pressure exerted by the external atmosphere is equal to the vapor pressure of the substance.
The boiling point depends on atmospheric pressure, temperature, bond strength, and vapor pressure of the liquid.
As the water is boiling it means it has more thermal energy contained in it than the surrounding air and the ice is present at zero degrees.
As we know that heat is always transferred from the higher thermal potential to the lower thermal potential and as the boiling water has the higher thermal potential among the ice and the surrounding air thermal energy will move from the boiling water to the ice and the thermal energy will move from the air to the ice. Therefore the correct options are options A and option B.
Learn more about the boiling point from here
brainly.com/question/25777663
#SPJ5
A testable prediction is a(n) ______. Group of answer choices a. hypothesis b. experiment c. exercise d. variable
Answer :A testable prediction is also known as a hypothesis.
Explanation: I think
A testable prediction is a hypothesis. (a)
What is the Nearest Galaxy from the Milky Way
A grapefruit falls from a tree and hits the ground 0.76 s later.
How far did the grapefruit drop?
What was its speed when it hit the ground?
Answer:
2.8 m 7.4 m/s
Explanation:
write all the values then use the equations of motion to find the distance and speed. please see attached photo
A 50 kg boy runs and jumps with a forward velocity of 1.5 m/s into a 125 kg stationary boat.
What is the final velocity of the boy/boat system?
0.43 m/s, forward
0.43 m/s, backward
1.1 m/s, forward
1.1 m/s, backward
Answer:
0.43 m/s, forward
Explanation:
i just took the test
A 50 kg boy runs and jumps with a forward velocity of 1.5 m/s into a 125 kg stationary boat, then the final velocity of the boy boat system would be 0.43 meters per second in the forward direction, therefore the correct answer is option A.
What is momentum?It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.
As given in the problem A 50 kg boy runs and jumps with a forward velocity of 1.5 m/s into a 125 kg stationary boat, then the final velocity of the boy boat system,
By using the conservation of the momentum for the boy boat system,
50 × 1.5 + 0 = 175 × v
v = 75/175
v = 0.43 meters / second
Thus, the final velocity of the boy boat system would be 0.43 meters / second in the forward direction.
To learn more about momentum from here, refer to the link ;
brainly.com/question/17662202
#SPJ5
how to explain horizontal in words
In astronomy and geography, a direction or plane is said to be horizontal if it is perpendicular to the vertical direction. In mathematics, anything parallel to the horizon is called horizontal. Because vertical is the opposite of horizontal, anything that makes a 90-degree angle (right angle) with the horizontal or the horizon is called vertical. So, the horizontal line is one that runs across from left to right.
The ramp is used to lift a heavy load
What is the weight (in Newtons) of a person with a mass of 95 kg?
The weight of the person is 931 Newtons.
Given:
The mass of the person is 95 kilograms
To find:
The weight of the person in Newtons.
Solution:
Mass of the person = m = 95 kg
The accleration due to gravity = g = 9.8 m/s^2
The weight of the person = W
[tex]Weight=Mass \times \text{(Acceleration due to gravity)}\\\\W = m\times g\\\\W = 95 kg\times 9.8 m/s^2=931 N[/tex]
The weight of the person is 931 Newtons.
Learn more about the weight and mass of an object here:
brainly.com/question/15012770?referrer=searchResults
brainly.com/question/24746824?referrer=searchResults
Which is a valid velocity reading for an object?
Answer:
45 m / s North is a valid vector reading for an object.
Explanation:
Then velocity will be defined by x km / hr North. And, magnitude of velocity defines the speed of the body. Although this tells the speed, but there is no description for the direction, so it's not a vector reading
45 m/s north is a valid velocity reading for an object. So, the correct option is B.
What is Velocity?Velocity is explained as displacement in a given amount of time which is a vector quantity, meaning it has both magnitude and direction. When a body travelling on a straight path at a speed of x km / hr in North, then the velocity will be defined by x km / hr North.
Options like 45m/s, 0 m/s north and 0 m/s are speed, null velocity and speed respectively, as it tells speed, but no description for direction, so it is not a vector reading. 45 m / s North tells about the speed as well as its direction and the magnitude of velocity.
Thus, 45 m/s north is a valid velocity reading for an object. So, the correct option is B.
Learn more about Velocity, here:
https://brainly.com/question/17117095
#SPJ5
Your question is incomplete, most probably the complete question is:
Which is a valid velocity reading for an object?
45 m/s 45 m/s north 0 m/s south 0 m/s2 kg of water and 2 kg of Copper are cooled from same temperature to the same temperature. Why does the water cool more slowly than the Copper?
Answer:
Water has higher specific heat capacity compared to copper. This means that water needs to absorb more heat energy to increase it's temperature by 1 °C. Therefore, water needs longer time to release heat energy due to higher amount of heat energy stored inside the water.
How are mass and weight different
Answer:
mass is something that takes up space and weight is how much mass something has
Choose the statement that is a misconception about a system in chemical equilibrium. (2 points) The rate of the forward reaction is equal to the rate of the backward reaction. The concentrations of the products and reactants dont change. The values of the products and reactants do not have to match each other. The reactions stop once equilibrium is reached.
Answer:
The correct answer is "The reactions stop once equilibrum is achieved"
Explanation:
A system is said to have attained equilibrium when the rate of forward reaction is the same/equal to the rate of backward reaction. The reaction below shows a chemical reaction that is at equilibrium
2N₂O₅ (aq) ⇄ 4NO₂ (aq) + O₂ (aq)
An equilibrium reaction is always a reversible reaction. When the system is at equilibrium (when there is a balance), the concentration of the reactants and products do not change despite the fact that reaction does not stop; what happens however is that the rate at which the reactant(s) are formed (backward reaction) will be equal to the rate at which the product(s) are formed (forward reaction).
From the explanation above, it can be deduced that "The reactions stop once equilibrum is achieved" is a misconception about a system in chemical equilibrium.
how has climate change affected Kentucky
Answer:
It will make it hot or cold
Explanation:
Why salt is a pure substance and salt solution is considered to be a mixture
Explanation:
Salt (NaCl) is a pure substance because it contains two elements in a fixed ratio and has only one component. On the other hand, salt solution is a mixture, as it has two different components- salt and water.*IT MAY HELP U.Plz marke as a brainlist
Answer:
Mixtures are defined as assemblies of materials that have no chemical bonds between them and thus can usually be separated - like sand and water.
Solutions where a solid material such as salt is completely dissolved are not generally thought of as mixtures because there is loose hydrogen bonding involved in the dissolving of a solute in a solvent.
Solutions lie between pure substances and true mixtures, but are usually not thought of as mixtures.
Explanation:
To travel across the diameter of the Milky Way galaxy, traveling at light speed, it would take:
Answer:
200000 years
Explanation:
The disk of our home galaxy – the Milky Way – is bigger than we previously thought. A new study shows it would take 200,000 years for a spaceship traveling at the speed of light to go across the entire galaxy.
A rope exerts a 35N force on an object at an angle of 12N degrees above the horizontal. What horizontal and vertical components of the force?
Answer:
The horizontal component of the force, [tex]F_x= 34.24 \ N[/tex]
The vertical component of the force, [tex]F_y=7.28 \ N[/tex]
Explanation:
Given;
Force on the rope, F = 35 N
angle between the rope and the horizontal = 12 °
The horizontal component of the force is given by;
[tex]F_x = Fcos \theta\\\\F_x = 35cos(12^0)\\\\F_x = 34.24 \ N[/tex]
The vertical component of the force is given by;
[tex]F_y = Fsin\theta\\\\F_y = 35sin(12^0)\\\\F_y = 7.28 \ N[/tex]
