Answer:
According to the Given Statement
Canon fires directly upwarda at 150m/s ( Initial speed, u )
Acceleration due to gravity is 10m/s²
Since Cannon ball reach it maximum height so its final velocity v will be 0 m/s .
Using Kinematic Equation
v = u + gtOn substituting the value we get
➥ 0 = 150 + 10 × t
➥ 150 = 10 × t
➥ 150/10 = t
➥ 15 s = t
So, it will take 15 seconds .
Answer:
maximum height reached: 15 s
Explanation:
using the formula: maximum height reached = [(sin(θ) * speed)/ gravity]
Here speed is 150m/s and gravity is 10 m/s² and as it does directly upwards, it has an angle of 90°
using the formula:
maximum height reached = [(sin(90) * 150)/ 10] = 15 s
How was Mendeleev first periodic table like the periodic table today
Answer:
He began organizing the known elements according to their atomic weights and chemical properties.
Explanation:
give 3 examples that gives distance
Answer:
d(P1,P2) = (x2 x1)2 + (y2 y1)2 + (z2 z1)2. This can be proved by repeated application of the Pythagorean Theorem. Example The distance between P1 = (2,3,1) and P2 = (8,5,0) is d(P1,P2) = (8 2)2 + (5 3)2 + (0 1)2 = 36 + 64 + 1 = 101 10.05.
Explanation:
PLEASE HELP ME!!!!! You draw an arrow from left to right on a piece of paper and place the paper well behind a glass of water. You observe that the direction of the arrow appears reversed behind the water glass!
What conclusions can you draw from this experiment?
(1 point)
The arrow appears reversed because light is bent as it enters the water, and again as it exits. The two light paths cross, making the direction of the arrow appear crossed.
The arrow appears reversed because light is bent as it enters the water, and again as it exits. The two light paths cross, making the direction of the arrow appear crossed.
The arrow appears reversed because light is reflected by the glass of water. Light is reflected so much that the arrow appears to face the other direction.
The arrow appears reversed because light is reflected by the glass of water. Light is reflected so much that the arrow appears to face the other direction.
It is not possible for the arrow to appear reversed behind a glass of water. The most likely explanation is that a mistake was made during the experiment.
It is not possible for the arrow to appear reversed behind a glass of water. The most likely explanation is that a mistake was made during the experiment.
The arrow appears reversed because light is split as it enters the water, and combines again as it exits the water. When the light re-combines, the arrow appears to be flipped.
Answer:
I think it is the first one: The arrow appears reversed because light is bent as it enters the water, and again as it exits. The two light paths cross, making the direction of the arrow appear crossed.
Explanation:
Who was the english thinker who established the three laws of motion?.
Answer:
Isaac Newton
Explanation:
Because i learned this in school
A hunter aims directly at a target (on the same level) 73.0 m away. If the bullet leaves the gun at a speed of 190 m/s , by how much will it miss the target
We have that the miss distance is mathematically given as
h= 0.76 m
Distance of miss
Question Parameters:
Generally the equation for the Time is mathematically given as
t = d / v
Therefore
[tex]t = \frac{73.0 m}{ 185 m/s}[/tex]
t = 0.39s
Hence
x = 1/2 g t^2
x = 1/2 *9.8 * 0.39 s ^2
x= 0.76 m
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Electric charge only
has an amount. That makes it a
Answer:
that makes it a scalar quantity
The electric charge only has an amount that makes it a scalar quantity.
What is scalar quantity?A scalar quantity is a type of quantity that can be described by magnitude only. Scalar quantity has no direction and can be represented by magnitude only.
Electric charge with only amount can be said to be a scalar quantity, because it can be completely described by its magnitude only.
Thus, the electric charge only has an amount that makes it a scalar quantity.
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A horse travels at 12 km/hour. How long will it take to travel 18km?
What does it mean when it is said that
the action force and reaction force are
both "equal and opposite"?
A. The direction of force is opposite, but the magnitude of
force is equal.
B. The magnitude of force is opposite, but the magnitude of
force is equal
C. Both the direction of force and the magnitude of force
are equal.
D. Both the direction of force and the magnitude of force
are opposite
Answer: A
Explanation: The direction of force is opposite but the magnitude of force is equal.
What is it called when you pull a line off your reel and cast it?
A cyclist is travelling at 4.0 m/s. She speeds up to 16 m/s in a time of 5.6 s. Calculate her acceleration.
Answer:
acceleration: 2.14 m/s²
Explanation:
acceleration = (final velocity - initial velocity ) ÷ time taken
Here the final velocity is 16 m/s, initial velocity is 4 m/s, time taken is 5.6 s
acceleration = ( 16 - 4 ) ÷ 5.6
→ 12 ÷ 5.6
→ [tex]\left[\begin{array}{ccc}\frac{15}{7}\end{array}\right][/tex] m/s² or 2.14 m/s²
How will you show the presence of infrared rays in the electromagnetic spectrum?
Answer:
In the near infrared (NIR) and the short-wave infrared (SWIR) spectrums, we measure the reflectivity of objects. Thus, using a specific lighting working in an active infrared spectrum, we can capture the rays reflected by the object and produce its reflectrogram.
Explanation:
hope it will help you have a great day bye and Mark brainlist if the answer is correct
[tex]kai6417[/tex]
The __________ is located under the forebrain and midbrain. A. forebrain B. midbrain C. hindbrain D. brainstem
Answer is the hind brain
The brainstem is located under the forebrain and midbrain. Therefore option D is correct.
The brainstem is located under both the forebrain and midbrain. It is a vital component of the central nervous system that connects the brain to the spinal cord and controls many essential functions such as breathing, heart rate, and digestion.
It consists of three main regions: the medulla oblongata, pons, and midbrain. The forebrain, midbrain, and hindbrain together constitute the major divisions of the brain.
The hindbrain is positioned below the midbrain and includes structures like the cerebellum, pons, and medulla oblongata.
The brainstem, specifically its lower regions, is responsible for relaying information between the brain and the rest of the body while regulating critical bodily functions.
Therefore option D is correct.
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If the frequency of a wave is 400hz and it’s wave length is2.5 what is the velocity ?
Which evidence card could be eliminated because it did not isolate variables?
Evidence Card A: Magnetic pole arrangement
Evidence Card A: Magnetic pole arrangement
Evidence Card B: Number of wire coils
Evidence Card B: Number of wire coils
Evidence Card C: Rail material
Evidence Card C: Rail material
Evidence Card D: Distance between the car and launcher
Evidence Card D: Distance between the car and launcher
None should be eliminated.
None should be eliminated.
Based on the nature of variables, none of the evidence card should be eliminated because they all represent variables.
What are variables?Variables refers to any quantity that can have various values.
Variables include age, time , distance, height, speed, etc.
Variables can either be independent, dependent or constant.
Magnetic pole arrangent is a variable because it can take different values.Number of coils is a variable because it can take different values.Rail material is a variable because it can take different values.Distance between the car and launcher is a variable because it can take different values.There, none of the evidence card should be eliminated because they all represent variables.
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What is the nature of material after elastic limit
Answer:
In stress strain curve of ductile materials, up to proportionality limit stress and strain are proportional to each other and also elastic in nature. After that proportionality disappears and only elasticity remains. That limit is called elastic limit.
Explanation:
A 500-ml sample of argon at 800 torr has its absolute temperature quadrupled. If the volume remains unchanged what is the new pressure?.
Answer
P V = C R T natural gas law
P1 V1 = C R T1
P2 / P1 = T2 / T1 = 4 other numbers remain constant and cancel
P2 = 4 P1
The new pressure is 4 times as great.
The new pressure is 4 times greater.
Argon:The chemical element argon has the atomic number 18 and the symbol Ar. It is a noble gas that belongs to group 18 of the periodic table.At 0.934 percent, argon is the third-most abundant gas in the Earth's atmosphere (9340 ppmv). It is 23 times as abundant as carbon dioxide (400 ppmv), more than 500 times as abundant as neon, and more than twice as abundant as water vapor, which averages around 4000 ppmv but varies substantially (18 ppmv). The most prevalent noble gas in the crust of the Earth, argon makes up 0.00015 percent of the crust.Torr:The torr is an absolute scale pressure measurement that is equal to precisely [tex]\frac{1}{760}[/tex] of a standard atmosphere. As a result, [tex]\frac{101325}{760}[/tex] pascals is exactly one torr. Although historically one torr was meant to be equivalent to one "millimeter of mercury," later redefinitions of the two units resulted in a minor difference.Solution -
[tex]PV=CRT[/tex] (Natural gas law)
[tex]P1V1=CRT1[/tex]
[tex]\frac{P2}{P1} =\frac{T2}{T1} =4[/tex] (Other members remain constant and cancel)
[tex]P2=4P1[/tex]
Therefore, the new pressure is 4 times greater.
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How much force is needed to accelerate an object of mass 90 kg at a rate of 1. 2 m/s2?.
Answer:
108
Explanation:
because F=ma
which is 90 × 1.2
= 107N
A ball of mass 1.84 kg is dropped from a height y, =
1.49 m and then bounces back up to a height of y, = 0.87 m.
How much mechanical energy is lost in the bounce?
Help
Answer:
11.408 joules
Explanation:
soln
From the question above
Mass of ball = m = 1.84kg
Height of ball when dropped = 1.49m
Height of ball when it bounces back up = 0.87m
Recall
Potential energy (P.E) = mass × height × g
Kinetic energy(K.E) = 1/2 × mass × (velocity)²
Mechanical energy = K.E + P.E
M.E lost = M.E when ball dropped – M.E when ball bounces back up
Recall that g = acceleration due to gravity = 10ms²
P.E/K.E when ball dropped = 1.84 × 1.49 × 10
P.E/K.E when ball dropped = 27.416J
P.E/K.E when ball bounces back = 1.84 × 0.87 × 10
P.E /K.Ewhen ball bounces back = 16.008J
Since P.E = K.E
M.E when ball dropped = 27.416J
M.E when ball bounces back = 16.008J
Therefore,
M.E lost = 27.416 - 16.008
M.E lost = 11.408Joules
What is the liquid called that if heat is created it turns into
this?
Answer:
latent heat, also called the heat of vaporization
The r force is the overall force. If two forces are acting in the same direction, the resultant force is the s of all the forces.
please help me fill in the two blanks were r and s is
The resultant force is the overall force. If two forces are acting in the same direction, the resultant force is the sum of all the forces.
Happy to help!
The resultant force is the overall force. If two forces are acting in the same direction, the resultant force is the sum of all the forces. Hence the blanks where r and s are resultant force and sum respectively.
What is force?Force is an external factor, which aids a body to change from the state of motion or rest. There are different types of forces namely, magnetic force, gravitational force, nuclear force, frictional force etc.
The unit of force is newton. According to Newton's second law of motion, the force acting on a body is the product of its mass and acceleration. Thus we have the equation F = ma.
If a body experience's different forces or the same forces in different direction the net force in after all balancing is called the resultant force.
Now, if two forces are acting on the same direction, the resultant force will be the sum of these forces.
Therefore, the blanks in the place of r and s are resultant and sum respectively.
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Random Question
A magician comes onto the stage he shows the judges he has a card he shows both sides while grinning, he grabs a pen and it goes right through! He takes it back out and the card has no rip or tear and it looks just the same! How did he do it?
Answer:
B
Explanation:
The Magician pulled a rabbit out of his hat
A car with a mass of 1,600 kg has a
kinetic energy of 125,000 J. How fast is it moving?
Answer:
Hope This will help you
From the calculation, the kinetic energy of the moving car is 12.5 m/s.
What is kinetic energy?The term kinetic energy refers to the energy that a body possesses as a result of its motion. It is the energy of a moving body.
Now we know that the kinetic energy is 125,000 J and the mass is 1,600 kg. Now;
KE = 1.2 mv^2
v = √2KE/m
v = √ 2 * 125000/1600
v = 12.5 m/s
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If you view an object with binoculars, and the image appears right side up and a dozen times larger, then what is the magnification of the binoculars?
12 x is the magnification power if we view an object with binoculars, and the image appears right side up and a dozen times larger.
What is magnification power?Magnification power refers to the larger image of a given lens can make of an object which is seen through the lens. If a microscope has magnification power up to 1000x, then this means that the image of the object is 1000 times larger than the original one so we can conclude that the magnification power of binocular is 12x.
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A student observes that the temperature of a container of water stops increasing right before it starts to boil and turn into gas. Which statement is correct about the thermal energy of the water? (1 point)
The kinetic energy of the water is still increasing even though the temperature is not increasing.
The thermal energy of the water remains constant as it transforms from liquid to gas.
The thermal energy of the water is still increasing even though the temperature is not increasing. The potential energy of the water remains constant as it transforms from liquid to gas.
During boiling, the temperature of a container of water remains constant because thermal energy of the water is constant during the transformation from liquid to gas.
What is kinetic energy?Kinetic energy is energy possessed by a particle by virtue of its motion. Molecules that compose matter are in constant random motion according to the kinetic theory of molecules.
The temperature of a container of water stops increasing right before it starts to boil and turn into gas because the thermal energy of the water remains constant as it transforms from liquid to gas. The heat that is required to turn the liquid into gas at the boiling point is called the latent heat.
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please help!!!!!!!!!!!!! i will give brainly
1.) Define force? Give an example.
2.) Define Newton's 1st Law? Give an example.
3.) Define Newton's 2nd Law? Give an example.
4.) Define Newton's 3rd Law? Give an example.
Answer:
1.) strength or energy to do an action or movement
2.)an object will jot change its motion unless acted on by an unbalanced force
How does gravity cause the planets to move in a circle around the sun?.
Answer:
The sun's gravity pulls the planet toward the sun, which changes the straight line of direction into a curve. This keeps the planet moving in an orbit around the sun. Because of the sun's gravitational pull, all the planets in our solar system orbit around it.
Which picture correctly shows the path of the reflected light ray?
Select one:
a. A
b. B
c. C
d. D
In my opinion it's picture D
You are observing a star about 95 trillion km (10 light-years) away. How old is the most recent information you can get about this star
The most recent information you can get about this star is near 10 years old.
What is a light-year?A light-year is a distance unit, that represents the distance that light can travel in one year.
Now, we know that nothing can move faster than the speed of light, and the only information that we can get about this star comes through light (electromagnetic waves). And these waves travel at the speed of light.
So these waves would need at least 10 years to travel from the start to the satellites that can detect them, this means that the most recent information that you can get about this star is actually 10 years old.
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An object in projectile motion will follow which path?
curved up from the ground
curved down toward the ground
straight down toward the ground
straight up from the ground
An object in projectile motion will follow curved up from the ground, curved down toward the ground. The correct options are (a) and (b).
An object in projectile motion will follow a curved path. Specifically, it will follow a curved trajectory that is symmetric around the highest point of its flight. The object will initially move horizontally while also experiencing vertical motion due to the force of gravity. As a result, the object's path will be a parabolic curve.
So, the correct answer is Curved up from the ground (when initially launched) and curved down toward the ground (when it reaches the highest point and descends). The correct options are (a) and (b).
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why is it that; the greater the area, the lesser the pressure applied?
Answer:easier for a sharp pin to penetrate a piece of cardboard than a blunt one
Explanation:when the same force is used. A solid resting on a horizontal surface exerts a normal contact force equals to its weight.