1. A car begins at a speed of 3 m/s and accelerates at 2 m/s2
over a distance of 40 m, calculate the final speed of the car.
Explanation:
v^2 = u^2 + 2as
v^2 = 9 + 160
v^2 = 169
v = 13
pts
You walk 10 meters east, then 5 meters north. What is your displacement?
What 2 gases make up most of the atmosphere?
Answer:
nitrogen oxygen carbon dioxideand argon
Explanation:
6. Most things you use every day are: a.compounds b. elements c. mixtures
Answer: B. Elements
Explanation:
Most things we use everyday are compounds which are composed of two or more elements.
What are compounds?
Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.
Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:
1)Molecular compounds where in atoms are joined by covalent bonds.
2) ionic compounds where atoms are joined by ionic bond.
3)Inter-metallic compounds where atoms are held by metallic bonds
4) co-ordination complexes where atoms are held by co-ordinate bonds.
They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.
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Explain why light behaves like both a wave and a particle?
HELP PLEASE
Find the net force necessary for a 15 kg object to accelerate at 20 m/s/s.
Answer:
The answer is 300 NExplanation:
The force acting on an object given the mass and acceleration we use the formula
force = mass × accelerationWe have
force = 15 × 20
We have the final answer as
300 NHope this helps you
I need help with number 7 and 8
Answer:
7 is the 1 one and 8 is the 2 one
Explanation:
The cart in the figure is moving toward the right with a speed increasing at 3 m/s?. By what angle does the accelerometer deflect?
the answer is D) 17
i just took the quiz
How Can the human ear detect the sound
Answer:
Sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum. The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear.
Explanation:
The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear. These bones are called the malleus, incus, and stapes.
PLEASE HELP ME ASAP!!!!!
Answer the question below. Use the rubric in the materials for help if needed.
After the American Revolution, why did many citizens, including the Anti-Federalists, argue that it was necessary to add a bill of rights to the U.S. Constitution? Use details to
support your answer.
Answer:
Federalists argued that the Constitution did not need a bill of rights, because the people and the states kept any powers not given to the federal government. Anti-Federalists held that a bill of rights was necessary to safeguard individual liberty.
Explanation:
i need one more brainliest
Mention the relation between horsepower and watt.
What is the fullform of amu ?
Answer:
a power level of 1 hp is approximately equivalent to 746 watts or 0.746kilowatts by 746. To convert from watts to horsepower, multiply by 0.00134. To convert from horsepower to kilowatt, multiply by 0.746
Which is inversely proportional to your weight on a planet's surface?
A. Only your mass
B. Your mass and the mass of the planet
O O O
C. Only the planet's mass
D. The distance from the surface to the center of the planet
Answer:
most likely D
Explanation:
Distance from the surface to the center of the planet is inversely proportional to your weight or force due to gravity on a planet's surface.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
The gravitational constant, denoted by the capital letter G, is an empirical physical constant involved in the calculation of gravitational effects in Sir Isaac Newton's law of universal gravitation and in Albert Einstein's theory of general relativity.
f = Gmm/r²
Distance from the surface to the center of the planet is inversely proportional to your weight or force due to gravity on a planet's surface.
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Which scenario does not describe an example of acceleration?
A car increases its speed while turning to the left.
A car decreases its speed while driving straight ahead.
A car maintains a constant speed while turning to the right.
A car maintains a constant speed while driving straight ahead.
Answer:
B is the right answer
Explanation:
It is decreasing.
A car maintains a constant speed while driving straight ahead.
What is acceleration?The acceleration of an object is the rate of change of velocity with time. It is measured in meter per second square.
Velocity of the carThe car undergoes velocity when there is change in direction of the speed.
Thus, the only option that does not describe acceleration is a car maintains a constant speed while driving straight ahead.
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21000 km/hr how far will it travel in 5 hours
Answer:
105000 is the answer your welcome
Explanation:
105000
How and where is old oceanic crust destroyed?
Answer:
It is destroyed in subduction zones. A Geologic process in which a tectonic plate made of dense lithospheric material melts or falls below a plate made of less-dense lithosphere at a convergent plate boundary
Explanation:
Hope this helps (:
When performing a standard push-up, our hands should be placed on the ground... as close together as possible to make it the most challenging as close together as possible to make it the most challenging really wide to focus on chest development really wide to focus on chest development just outside our shoulders
Answer:
Kindly check the explanation section.
Explanation:
The statement given in the question or problem above is true or let's say it is correct. And the statement describes different kinds or types of push up.
Push up is a kind of excercise that is being done mainly to strengthen the arm and the cheat. The way one goes about it determines which part of the body one is strengthening.
The kind of push up in which one has to close up the gap between his or hands is known as the close push ups. This kind of push up strengthens the arm more than the other part of the body and the more one puts his or her hands closer the more problematic the push up excercise becomes.
Other types or kinds of push ups are the Slow Eccentric Push Ups, Wide Push Ups, Staggered Push Ups, T push ups, Fingertip Push Ups and many more.
A rocket takes off from Earth. It travels 825km in 75 seconds. What is the
speed of the rocket?
0 1 km/s
11 km/s
O 1.1 km/s
O 111 km/s
Answer:
11 km/s
Explanation:
v=s/t
v=825km/75s
v=11km/s
60 point!!!
Instructions-
Give a real life example of each of Newton's Laws in action. Be sure to specificy which law your
example is linked to.
Give examples with pulleys
Answer:
Playing hockey, driving a car, and even simply taking a walk are all everyday examples of Newton's laws of motion.
Where are streams located?
Answer:
Larger seasonal streams are more common in dry areas. Rain-dependent streams (ephemeral) flow only after precipitation. Runoff from rainfall is the primary source of water for these streams. Like seasonal streams, they can be found anywhere but are most prevalent in arid areas.
Explanation:
Which of the following is NOT a likely result of regular physical activity?
a. increased energy
b. decreased attention span
c. improved school attendance
d. improved self-image
Answer:
B.) decreased attention span
Explanation:
took the test and got 100%
What is the speed of an object that travels 60 meters in 4 seconds?
a) 240 m/s
b) 15 m/s
c) 0.067 m/s
d) 15 mph
Answer:
B) 15 m/s
Explanation:
Since most of the answer choices are in m/s, you can try dividing 60 meters/4 seconds in order to get the seconds on the bottom to become 1 second.
You want to find how many meters the object can travel in 1 second, rather than 4 seconds.
[tex]\frac{60 \ m}{4 \ s} \div \frac{4}{4} = \frac{15 \ m}{1 \ s}[/tex]Now you can see that for every 1 second of time, the object can travel 15 meters. This corresponds to answer choice B) 15 m/s.
The last option, D, is incorrect because we are not dealing with hours as our unit of time. We are dealing with seconds.
Answer:
b) 15 m/s
hope it help you
draw a diagram of a seismometer showing how the movement of earth is lated into a siesmogram
idk but it seems hard.
how does shape of object affect friction
Answer:
There are three types of friction.
1. Slanting friction
2. Sliding friction
3. Rolling friction
In the first two types of friction, the body of the object will come in contact with the irregularities on the surface more than in the case of rolling friction, thus a heavy box in square shape will have more friction than a heavy-duty vehicle.
This is also the reason why all vehicles are having wheels as they reduce friction and makes transportation easier and many people suggest to use a small log of wood to be placed on the bottom of a heavy box with flat bottom so it can moved easily due to reduction of friction
Bob rides his bicycle on a bike path that is 1000 meters long to get his house that is due east of the bike path. If Bob take 150 seconds then...
What is his speed?
What is his velocity?
Answer:
6.6 mph is the answer because u had to divide it
When a Newton's Cradle with three marbles is pulled back and released, a collision happens between the marbles causing a cycle of repeated motion. This transfer of energy will last for several cycles. List out all of the energy transfers that occur in one cycle.
Answer:
Please find the answer in the explanation
Explanation:
When a Newton's Cradle with three marbles is pulled back and released, the mechanical energy is converted to potential elastic energy.
When a collision happens between the marbles causing a cycle of repeated motion, The elastic potential energy is converted to kinetic energy.
This transfer of energy will last for several cycles. If there is any energy lost, then the kinetic energy must have been converted to thermal energy or heat energy
what would a boats velocity be if it would go 15kph and 18 kph?
Answer:
It depends
Explanation:
In the 19th century scientists Knew that light was some kind of wave. and every waye science had yet decided needed
Answer:
The light was the wave
Explanation:
speed is the ______ an object travels over a given time period.
Answer: Rate
Explanation: Speed is the rate an object travels over a given time period.
Answer:
Distance
Explanation:
Speed is the distance an object travels over a given time period.
Jorge Masvidal weighs 77.1107 how many grams?
Your friend tells you “I no the moon does not rotate because we always see the same side.” do you agree or disagree with your friend? Write up what you would say to your friend to show why you agree or disagree with them. (THIS IS URGENT I REALLY NEED HELP WITH THIS BECAUSE I DONT KNOW HOW TO EXPLAIN)
Answer:
no the moon does not rotate it only goes in circle just like the sun so I disagree with your friend