The relevant equations we can use in this problem are:
d = v0 t + 0.5 a t^2
v^2 = v0^2 + 2 a d
a. how high does it go?
We are to find for the distance d. The formula is:
v^2 = v0^2 + 2 a d
where v is final velocity = 0 at the peak, v0 = 25 m/s, a is negative gravity since opposite to direction = - 9.8 m/s^2, d is height achieved = ?
0 = (25)^2 + 2 (-9.8) d
d = 31.89 m
Therefore the maximum height is about 31.89 meters
b. how long is it in the air
We use the formula:
d = v0 t + 0.5 a t^2
in going up, a = -g = -9.8 m/s^2, find for time t:
31.89 = 25 t + 0.5 (- 9.8) t^2
-4.9 t^2 + 25 t = 31.89
t^2 – 5.1 t = 6.51
Completing the square:
(t – 2.55)^2 = 6.51 + 6.5025
t – 2.55 = ± 3.61
t = -1.06, 6.16
Since time cannot be negative, therefore:
t = 6.16 seconds
However this is not the total time yet, because this only accounts for the time going up.
The time going up and going down are equal therefore:
t(total) = 2 t
t(total) = 12.32 seconds
Therefore the foul ball spent 12.32 seconds in the air.
What is the goal of the UK government in terms of carbon dioxide and energy use?
This is for earth science
Reducing CO2 emission to maximum extent and saving energy
Explanation:The present energy policy of UK is set out in the Energy White Paper of May 2007 and Low Carbon Transition Plan of July 2009. It was led by the Department of Energy and Climate Change, and after that headed by Amber Rudd. The current focus of policy are on the reformation of electricity market, rolling out smart meters and improving the energy efficiency of the UK building stock through the Green Deal in which CO2 emission is on top priority.
A student drew the following model:
Mantle...convection...volcano...cooling...crust...motion...
Which landform should the student put next in the sequence?
A: Fault
B: Mountain
C: Tectonic plates
D: Rock formation
Answer: C Tectonic Plates
Explanation:
Answer:
C. Tectonic plates.
Explanation:
The series given in the question is mantle...convection...volcano...cooling...crust..motion and then tectonic plate is next.
here the process started in mantle where hot lava was moving and due to convection, this molten lava came on the the surface in the form of volcano and cooled down and rocky crust was formed and the moving crust is known as tectonic plates.
A car making a 111-km journey travels 41 km/h for the first 55.5 km. how fast must it go during the second 55.5 km to average 51 km/h?
The inclusion of the scientific method in psychology is so important because it
a) Create an important field in neurobiology
b) Allowed psychology to be equal to astrology
c) Allowed psychology to be considered a science
d) Helped scientists prove that the theory of demonology was valid
I know this question is from 2017 but I am doing this for anyone else that is looking for a answer. The answer should be C.) Allowed psychology to be considered a science.
Why are some objects heavier than others?
An airplane flies with a constant speed of 840 km/hr. How far will go in 270 min
A system releases 680 kj of heat and does 150 kj of work on the surroundings.what is the change in internal energy of the system?
If a moon on jupiter has 1/8 the mass of the earth and 1/2 the earth's radius, what is the acceleration of gravity on the planet's surface?
The acceleration of gravity on the surface of a planet can be calculated using the mass and the radius of the planet. In this case, the question asks for the acceleration of gravity on Jupiter's surface, given the mass and radius of a moon on Jupiter relative to the earth. A formula is provided to calculate the acceleration of gravity on Jupiter's surface using the known mass and radius of the earth.
Explanation:The acceleration of gravity on the surface of a planet is directly proportional to its mass and inversely proportional to the square of its radius. In this case, the moon on Jupiter has 1/8 the mass of the earth and 1/2 the radius. Therefore, the acceleration of gravity on Jupiter's surface can be calculated as follows:
Acceleration of gravity on Jupiter's surface = (Mass of Jupiter) / (Radius of Jupiter)^2
Since the mass of the moon is 1/8 the mass of the earth and the radius is 1/2 the radius of the earth, we can substitute these values into the equation:
Acceleration of gravity on Jupiter's surface = (1/8 * Mass of Earth) / (1/2 * Radius of Earth)^2
Simplifying the equation gives:
Acceleration of gravity on Jupiter's surface = (1/8 * Mass of Earth) / (1/4 * Radius of Earth)^2
Assuming the mass and radius of the earth are known, you can substitute the values and calculate the acceleration of gravity on Jupiter's surface.
Learn more about acceleration of gravity here:https://brainly.com/question/42955767
#SPJ11
If the mass of an object is doubled, it's gravitational force will:
3. The function of the _______ is to convert the up-and-down motion of the piston into rotary motion that can be used to power the vehicle.
Answer:
crankshaft
Explanation:
it is the CRANKSHAFT because this is what goes around
What did Galileo discover when he dropped two cannon balls of different weights from the Leaning Tower of Pisa?
A.The force acting on both of the balls was the same.
B.The time for both of the balls to reach the ground was the same.
C.A mass-dependent attractive force was exerted by Earth on the two balls.
D.Gravity pulls everything downward.
E.The balls exerted an attractive force between each other as they fell.
NextReset
Answer:
B. The time for both of the balls to reach the ground was the same.
Explanation:
Galileo showed that objects fall at the same time regardless of their weight, it is a matter of their resistance to air that arrives or not before. In a system where there is no air and therefore no friction, the objects fall at the same time and that has been demonstrated many times.
NEED THIS ANSWERED ASAP!!!! IN MIDDLE OF TEST RN HELP PLZ
Barry is conducting an experiment and rolls a tennis ball down a ramp. Which best describes the motion of the tennis ball?
A)It does not exhibit projectile motion and follows a straight path down the ramp.
B)It does not exhibit projectile motion and follows a parabolic path down the ramp.
C)It exhibits projectile motion and follows a straight path down the ramp.
D)It exhibits projectile motion and follows a parabolic path down the ramp.
How does the bohr model represent electrons around the central nucleus why think of the spectra?
I NEED THIS CORRECT!!
Bases turn litmus paper what color?
As light waves enter the eye, which three structures do they pass through first?
Light waves entering the eye first pass through the cornea, then through the pupil, and finally through the lens, before being focused onto the retina.
As light waves enter the eye, they pass through three main structures before reaching the retina where they are detected by photoreceptor cells. The first structure light encounters is the cornea, which is a transparent layer at the front of the eye. After the cornea, light travels through the pupil, which is the opening in the center of the iris that can adjust in size to control the amount of light entering the eye. Finally, light passes through the lens, which focuses the light waves onto the retina. The cornea and the lens are responsible for most of the eye's refractive power, ensuring images are sharply focused.
Why does the area swept by a planet in a given period of time remain constant even as the planet speeds up and slows down
When discussing what makes a material a good conductor you say, "They must
resist neutron flow."
readily accept electron flow."
readily accept neutron flow."
resist electron flow."
Answer:
readily accept electron flow."
Explanation:
As we know that electric current is defined as rate of flow of electric charge which is basically due to flow of electrons
So here we can say that
[tex]i = \frac{dq}{dt}[/tex]
now we know that conductors are defined as good conductors when they do not resist the flow of charge
which means a good conductor will easily conduct the electric current through it.
So here correct answer will be
readily accept electron flow."
The variable that you change during an experiment is called what type of variable?
a small airplane flies at a velocity of 145 km/h toward the south as observed by a person on the ground. The airplane pilot measures an air velocity of 172 km/h an hour. What is the velocity of the wind that affects the plane?
Which of these helps you understand what people are saying to you? A. Interrupting them B. Looking away while they're speaking C. Thinking about how you'll respond D. Thinking about what they're saying
____ use multiple infrared beams that are aimed across a doorway and positioned so that as a person walks through the doorway some beams are activated.
The Power Rocket coaster track is 3,265 feet and the ride is 90 seconds long. What is the speed of the coaster in feet per second?
You drop a rock off the top of a 100m tall building. How long does it take to hit the ground?
Lavoisier made an important contribution to chemistry by _____.
coining the term "atom"
developing the law of multiple proportions
developing the law of conservation of matter
developing the atomic theory of matter
Almonds cost $3.49 per pound. A bag of almonds costs $6.95. to the nearest whole pound, about how many pounds of almonds are in the bag?
The hint in this problem is in the word "about" or approximately how many pounds.
So we could find the solution by estimation through rounding off.
We know that almonds cost about 3.50 per pound and a bag costs about $7.00.
Dividing 7 by 3.50 per pound, will give us $7 ÷ $3.50 = 2 pounds.
The answer is 2 pounds.
Answer:2 pounds of almonds are in the bag.
Explanation:
According to question ,pounds of almonds in $3.49 = 1 pound
Then pound of almond for $1 = [tex]\frac{1}{3.49} pounds[/tex]
Pounds of almond which cost $6.95:
[tex]\frac{1}{3.49}\times 6.95 pounds=1.9914 pounds\approx 2 pounds[/tex]
2 pounds of almonds are in the bag.
What are the four layers of oceanic crust from top to bottom?
Oceanic, Crust, Geolific, techtonic are the four layers of oceanic crust from top to bottom.
what are oceanic crust ?Oceanic crust is nothing but the part of the Earth's crust which makes up the seafloor which is thinner, denser, and simpler in structure than the continental crust; it is younger, on average; from its birth at a mid-ocean ridge to its end at a subduction zone.
The oceanic crust fragments are sometimes become stranded high and dry on top of a continent; both Continental Crust together constitute the Earth Crust, yet they are completely distinct in composition, thickness and geological history.
The Oceanic Crust exists at the bottom of all Oceans, filling the spaces between the portions of Continental Crust, its density and thickness, plunges below the edge of the continental plate into the subduction zones.
This causes formation of a new ocean plate to accommodate displacement of continents and replace the plate that is destroyed by subduction.
For more details oceanic crust, visit
https://brainly.com/question/5637320
#SPJ6
Which force is responsible for making fusion possible in the sun?
Answer: Strong Nuclear Force is responsible for making fusion possible in the sun .
Explanation:
Fusion reaction is basically the result of the interplay of two opposing forces
1. Attractive Strong Nuclear Force
2. Repulsive coulomb force
Strong nuclear force is a short range force while its magnitude is much greater than the coulomb force . When two nuclei approach each other coulomb force of repulsion between the nuclei (proton-proton repulsion) acts between the nuclei but due high speed as the nuclei come closer strong nuclear force of attraction come into play which has magnitude much more larger than the coulomb force .
The strong force grows rapidly once the nuclei are close enough, and the fusing nucleons can essentially "fall" into each other and the result is fusion and net energy produced. Thus it is the presence of Strong Nuclear Force which makes the fusion possible .
PLZZZ HELP!!! What is the main difference between a permanent magnet and a temporary magnet?
A permanent magnet is made of a ferromagnetic material, while a temporary magnet is not.
A temporary magnet attracts only metal objects, while permanent magnets attract both metal objects and other magnets.
The domains in a temporary magnet easily lose alignment, but the domains in a permanent magnet keep their alignment.
There are domains in a permanent magnet, but not in a temporary magnet.
Answer: The correct answer is "The domains in a temporary magnet easily lose alignment, but the domains in a permanent magnet keep their alignment".
Explanation:
Permanent magnet: Bar magnet is the example of the permanent magnet.
The poles of the temporary magnet can not be changed. The strength of the magnetic field can not be increased or decreased. The domains of the permanent are permanent aligned.
Temporary magnet: Electromagnet is the example of the temporary magnet.
The poles of the temporary magnet can be changed. The strength of the magnetic field can be increased or decreased. If the current will not flow in the electromagnet then it will easily loose its magnetism. The domains in a temporary magnet easily loose alignment.
Therefore, the correct difference between a permanent and a temporary magnet is "The domains in a temporary magnet easily lose alignment, but the domains in a permanent magnet keep their alignment".
The dependent variable, or the one the response is measured in, is _______
amount of friction
Initial height
speed
Water flows over a section of niagara falls at a rate of 6.00 ´ 105 kg/s and falls 50.0 m. what is the power dissipated by the waterfall?