a ball is thrown horizontally from the roof of a building 45m tall and lands 24m from the base what is the initial speed?
To find the initial speed of a ball thrown horizontally from a 45m tall building, we first calculate the time of flight using the vertical motion equation and then determine the initial horizontal speed using the range and time of flight.
Finding the Initial Speed of a Horizontally Thrown Ball
To calculate the initial speed of a ball thrown horizontally from the roof of a building that is 45 meters tall and lands 24 meters from the base, we can use the kinematic equations of motion for projectile motion.
Step 1 - Time of Flight
To find the time it takes for the ball to hit the ground, we use the vertical motion equation:
s = ut + 0.5*at^2
Since the ball is thrown horizontally, the initial vertical velocity (u) is 0 m/s. s is the height of the building (45 m) and a is the acceleration due to gravity (9.8 m/s2).
By substituting the known values, we can solve for t.
Step 2 - initial Horizontal Speed
Now, knowing the time of flight, we can find the initial horizontal speed(vx) using the horizontal motion equation:
Range = vxt
The range is given as 24 m. Therefore, vx = Range / t.
Final Answer
After calculating, we get the initial horizontal speed of the ball, which is necessary to cover the horizontal distance within the derived time of flight.
Use the map to compare the locations of points X and Y. Point X is Florida.
Which of the following compares the temperature range of points X and Y?
Point X has a larger temperature range throughout the year because it is coastal.
Point X has a larger temperature range throughout the year because it is inland.
Point X has a smaller temperature range throughout the year because it is coastal.
Point X has a smaller temperature range throughout the year because it is inland.
Mark this and return
Answer:
A
Explanation:
In order to get the bike to move and stay moving, what friction must be overcome
Friction is the resistance offered against the motion of one surface over the other. This is because, at the microscopic level, each surface has hills and valleys i.e. the surfaces are not completely smooth and hence the roughness of one surface locks over the other and restricts its motion. There are two kinds of friction: static friction and kinetic friction. When the object is at rest, static friction acts. While the object is in motion, kinetic friction acts. Static friction is greater than the kinetic friction because a larger force is required to change the state of rest to motion. You must have experienced that if you do not accelerate the bike while its in motion, it would slow down and eventually stop. In order to get the bike moving, initially static friction must be overcome and thereafter, kinetic friction to make it stay in motion.
How does the current in a circuit change if the resistance is doubled?
In which type of transistor does current flow from the base to the emitter?
A. An NPN transistor, which has a p type base
B. An NPN
Answer:
The current flows from the base to the emitter in the NPN transistor.
Explanation:
NPN transistor :
NPN transistor is a semiconductor in which the positively charged is sandwiched between two negatively charged.
In NPN transistor, [tex]V_{CB}[/tex] is reverse-biases the collector-base junction and [tex]V_{BE}[/tex] is forward- biases the emitter-base junction.
Hence, The current flows from the base to the emitter in the NPN transistor.
Answer:
A. an NPN transistor, which has a p-type base
Explanation:
edge 2021
Chalk and talc are insoluble. what do you think thus term means
whats the basic particle that makes up matter
Franklin’s hometown is flooding due to a severe storm. He is evacuating the area in his vehicle. What should he do if he comes across a flooded area or flowing water?
Franklin must not drive through a flood for there may no road at all under the water, unless he is familiar with the road and the flowing water is below one foot.
Moreover, if negotiating a flooded section of road, he must drive in the middle where the water will be at its shallowest and he must not drive through water against approaching vehicle to consider other drivers.
Jack pushed and pushed, but no matter how hard he tried, the refrigerator would not budge! What is the BEST explanation of what happened? A) Jack exerted a force and did work. B) Jack had no energy and did no work. C) Jack used all his potential energy to do work. D) The refrigerator did not move so no work was done.
Answer:
D) The refrigerator did not move so no work was done.
Explanation:
The refrigerator did not move so no work was done. Jack did exert a force and he did have energy. His muscles were twitching and using stored chemical energy. No work is done, though, if the force or energy does not cause an object to move. No movement, no work.
The difference in the composition of the terrestrial planets and the gas giants can be explained by the different condensation ____________________ in the regions near and far from the sun during the formation of the solar system.
what are the approximate orbital periods of Phobos and Deimos respectively
The earth takes 1 year to revolve around the sun at 1 A.U. distance (an astronomical unit = 93,000,000 miles). If a planet were 4 A.U. from the sun, how many years would it take to make 1 orbit?
In a heat engine, if 700J of heat enters the system, and the piston does 400J of work, what is the final internal thermal energy of the system if the initial energy is 1200J?
#28: Describe/explain three different types of waves regularly used by humans.
If I remember correctly, it was radio waves, microwaves, and visible light.
We use radio waves, like when your sitting in the car, and you turn on the radio for some music, or broadcast you wanna listen you.
We use microwaves, to cook our food faster.
We use visible light, so we can see things around us. Any other wave would be to dangerous for us.
problems with solar energy include
The problems with solar energy include its intermittency and the high upfront cost of battery storage systems. The production of photovoltaic cells generates hazardous waste, and deployment of large-scale solar systems can harm undeveloped habitats. Also, solar energy cannot directly power all sectors like cars and airplanes due to its diffuse nature.
Explanation:There are a number of challenges and problems associated with the use of solar energy. Some primary issues include its intermittency, as solar energy capture is not constant, and can be particularly low during the nighttime or in seasons with less sunshine. This inconsistency can be offset by battery storage, but such storage solutions add substantial cost, need regular maintenance, and require the environmentally unfriendly process of battery replacement.
Another concern is the environmental impact of photovoltaic (PV) cells, the main technology for generating solar energy. The process of manufacturing PV cells requires the use of chemicals and solvents, generating some hazardous waste. Besides, the deployment of large-scale solar arrays in undeveloped areas or fragile ecosystems like deserts can cause habitat destruction. Solar thermal systems, another form of solar energy, also pose problems as they use potentially hazardous fluids for heat transfer and need significant amounts of water for cleaning and cooling.
Finally, solar energy can't directly power some sectors and applications such as cars and airplanes due to its diffuse nature, making it not entirely substitutable with other energy sources. While the sun provides an abundant source of energy, transitioning to a solar-powered society poses significant challenges.
Learn more about Solar Energy Problems here:https://brainly.com/question/29507399
#SPJ12
Another term for position of an object is_____.
In physics, another term for the position of an object is 'displacement'. Displacement refers to the change in position of an object in relation to a reference frame, and specifies the direction of movement.
Explanation:In the field of physics, another term for the position of an object is displacement. Displacement refers to the change in position of an object in relation to a reference frame. For instance, if an object moves to the right relative to a whiteboard, its position, or displacement, changes.
To illustrate, imagine an airplane in motion. To describe the position of a passenger in the airplane, you would use the airplane, not Earth, as the reference frame. Therefore, the passenger's displacement could be toward the rear or front of the airplane.
The key point to remember is that displacement not only refers to the change in position, but also specifies the direction of the movement. It's therefore considered a vector, and can be either positive or negative, depending on the chosen positive direction.
Learn more about Displacement here:https://brainly.com/question/11934397
#SPJ2
What are non examples of Asexual reproduction
We have that Non examples of Asexual reproduction will be the reproduction that requires two cells to reproduce.
Examples
BuddingHumansBirdsinsects
From the question we are told
What are non examples of Asexual reproduction
Generally
Asexual reproduction this are the type of reproduction in which a single sex cell is able to reproduce The Traditional union of sex cells in this case is not needed This can be found in plants and microorganismsTherefore
non examples of Asexual reproduction will be the reproduction that requires two cells to reproduce.
Examples
BuddingHumansBirdsinsectsFor more information on this visit
https://brainly.com/question/15476626
Food borne pathogens are harmful to the human body in any amount
Unsaved Earth is located in a region known as __________.
options:
a.the asteroid belt
b.the Kuiper Belt
c.the Oort Cloud
d.the Goldilocks Zone
n the picture of a planet in orbit around its star area a is double that of area b. What is true of the time the planet takes to travel A1A2 as compared to B1B2
Answer:
twice as much
Explain the difference between strength,muscular endurance and power
The difference between strength, muscular endurance, and power include:
Strength simply means the ability of a muscle to be able to generate force against resistance. On the other hand, power simply means a large amount of force that can be generated quickly. Muscular endurance simply means the ability of muscles to be able to exert force against a particular thing for a period of time.Strength has to do with one repetition while power has to do with several repetitions. Muscular endurance involves constant repetition.It should be noted that power, strength, and muscular endurance are forms of muscular ability.
Read related link on:
https://brainly.com/question/13682700
what is the mass of a 4900 N bobsled
Answer:
500 Kg.
Explanation:
The problem is giving us the weight of the object the weight is different from the mass of an object
Weight is the mass of any object multiplied by gravity (the value of gravity is approximately [tex]9.8\frac{m}{s^2}[/tex] ).
The unit of weight are newtons that equals
[tex]N= Kg.\frac{m}{s^2}[/tex]
[tex]W= m.g[/tex]
we cleared the mass of the formula
[tex]W=m.g\\ m=\frac{W}{g} \\ m= \frac{4900N}{9.8 \frac{m}{s^2} }= 500 Kg[/tex]
calculate the speed of a sound wave produced from a guitar if it creates 38 compressions each second with 0.57 meter wavelength
how does applying force to an object affect its motion
A diagram of the carbon-oxygen cycle is shown below.
Which of the following is mainly responsible for the removal of carbon dioxide from the atmosphere?
Question 23 options:
animals
factories
soil
plants
NEED IT ASAP
AND BRAINIEST
Plants are mainly responsible for the removal of carbon dioxide from the atmosphere.
How does plants help in reducing the atmospheric CO2?During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, while the carbon dioxide is reduced. This transforms the water into oxygen and the carbon dioxide into glucose.What is photosynthesis?It is the process by which plants uses sunlight as energy to convert carbon dioxide and water into oxygen and energy in the form of glucose .Thus , plants uses CO2 to form it's food and are responsible for the removal of carbon dioxide from the atmosphere.
Learn more about photosynthesis here...
brainly.com/question/26568636
#SPJ2
because the universe is expanding what happens to the light from other galaxies as it reaches earth
1) With your pneumatic system, how do you think your results would have been affected if there had been a leak in the tubing?
2) Given your observations for this investigation, would you rather ha a hydraulic braking system Or a pneumatic braking system in your car. Explain.
A leak in the tubing of a pneumatic system would decrease its efficiency. A hydraulic braking system would be preferred for a car.
Explanation:If there had been a leak in the tubing of a pneumatic system, the results would have been affected. A pneumatic system uses compressed air to transmit force, and if there is a leak, a decrease in pressure would occur. This would result in a decrease in the efficiency of the system, as the force applied may not be transmitted properly.
Based on the observations and the information provided, it is likely that a hydraulic braking system would be preferred for a car. A hydraulic system, like the one used in hydraulic brakes, utilizes an incompressible liquid to transmit force. This ensures that the force is transmitted efficiently without any loss due to compression or leaks.
If light intensity obeyed an inverse square law you would expect to find the intensity of light to decrease as the square of the distance increases?
True or false
this is a true statement
Sally was trying to calculate the speed of the hummingbirds feeding outside her window. Sally measured the distance from one feeder to the next, 24 meters. Then she sat and timed how long it took a hummingbird to fly from one feeder to the next. She timed 10 trials and calculated the average time, 3 seconds. What was the average speed of the hummingbird flying from one feeder to the other?
Answser: 8 m/s
Explanation:
Sally performed an experiment, in which she handled two variables:
The distance is fixed, so she only measured it one time and it was 24m.
She timed 10 trials and calculated the average time of 3 seconds. So, you will use this time fo calculate the average speed of the hummingbird flying from one feeder to the other, using the formula:
Hence, the result is 8 m/s.
Answer:8 m/s
Explanation:8 m/s
What is the electric potential of a 2.2 µC charge at a distance of 6.3 m from the charge? Recall that Coulomb’s constant is k = 8.99 × 109 N • ___ V
What is the electric potential at a distance of 99 m from the charge?___ V
The electric potential of a 2.2 µC charge at a distance of 6.3 m is 3.14 × 10^6 V. At a distance of 99 m, the electric potential is 2.02 × 10^4 V.
Explanation:To calculate the electric potential, we can use the equation V = kQ/r, where V is the electric potential, k is Coulomb's constant (8.99 × 10^9 N • V^-2 • m^2 • C^-2), Q is the charge, and r is the distance from the charge.
For a charge of 2.2 µC at a distance of 6.3 m, we can plug in the values to find:
V = (8.99 × 10^9 N • V^-2 • m^2 • C^-2)(2.2 × 10^-6 C)/(6.3 m) = 3.14 × 10^6 V
Similarly, for a distance of 99 m, the calculation would be:
V = (8.99 × 10^9 N • V^-2 • m^2 • C^-2)(2.2 × 10^-6 C)/(99 m) = 2.02 × 10^4 V