The branch of physics that defines motion with respect to space and time, ignoring the cause of that motion, is known as kinematics. Kinematic equations are a set of equations that can derive an unknown aspect of the motion of a body if the other aspects are provided.
Hope This Helps YouWhat type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?
Hint: Refer to the image of the electromagnetic spectrum at the beginning of the assignment.
Infrared light
Red visible light
Violet visible light
Ultraviolet light
Answer:
infrared light
Explanation:
infrared light
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(6) Wagon B is at rest so it has no momentum at the start. If v is the velocity of the wagons locked together, then
(140 kg) (15 m/s) = (140 kg + 200 kg) v
==> v ≈ 6.2 m/s
(7) False. If you double the time it takes to perform the same amount of work, then you halve the power output:
E / (2t ) = 1/2 × E/t = 1/2 P
How do we know how much
gravitational force objects have?
Answer:
With a force of 1 Newton, an object weighing 100 grams is dragged towards the planet's center. On Earth, an item with a mass of 100 grams has a gravitational pull of only 1%, or about kg.
Explanation:
i hope this helps
The following are dimensions of various physical parameters that will be discussed later on in the text. Here [L], [T], and [M] denote, respectively, dimensions of length, time, and mass.
Dimension Dimension
Distance (x) [L] Acceleration (a) [L]/[T]2
Time (t) [T] Force (F) [M][L]/[T]2
Mass (m) [M] Energy (E) [M][L]2/[T]2
Speed (v) [L]/[T]
Which of the following equations are dimensionally correct?
a. F = ma
b. x = 2 at2
c. E = 1/2 max
d. E = max
e. F = ?Fx/m
Dimentional analysis is very important in physics, because it allows finding errors in equations. We find that the following true equations
a) F= m a
b) x = 2 a t²
c) E = [tex]\frac{1}{2} }\ m \ a \ x[/tex]
d) E = m a x
The fundamental units in mechanics are;
the length [L] whose unit is the meter
The time [T] that has the second as a unit
The mass [M] with fundamental unit the kilogram (kg)
all other quantities are derived from these three fundamental units, for example velocity is
v = x / t
we replace the units
[v] = [L] / [T]
so the units of velocity are the distance between time.
This exercise uses the units of various quantities and asks to find if the equations are dimensionally correct.
Let's substitute the units in each expression
a) F = m a
[M] [L] / [[T] ² = [M] [L] / [T] ²
the two sides of the expression are equal therefore the equation is correct
b) x = 2 a t²
scalar quantities have no units
[L] = [L] / [T] ² [T] ²
[L] = [L]
the two sides are equal, therefore the equation is correct
c) E = ½ m a x
[M] [L] ² [T] ² = [M] [L] [T] ² [L]
[M] [L] ² [T] ² = [M] [L] ² [T] ²
the two sides are equal the equation is correct
d) E = m a x
since scalar quantities have no units, this expression is equivalent to the expression in part c, therefore it is correct
e) F = F x / m
[M] [L] / [T] ² = [M] [L] / [T] ² [L] / [M]
[M] [L] / [T] ² = [L] ² / [T] ²
the two sides are different so the equation is false
In the dimensional analysis we find that expressions are true a, b, c, d and we see that the expression e is false
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Convert the following in to SI units without changing its values
A. 4000 g
b. 2.4 km
A. The S.I unit of mass is kg . therefore we have to convert 4000g into kg from gram
i.e 4000g = 4 kg
B. The S.I unit of length is meter. so we have to convert 2.4 km into meters,
i.e 2.4 km = 2400 m
#A
[tex]\boxed{\sf 1kg=1000g}[/tex]
[tex]\\ \sf\longmapsto 4000[/tex]
[tex]\\ \sf\longmapsto \dfrac{4000}{1000}[/tex]
[tex]\\ \sf\longmapsto 4kg[/tex]
#B
[tex]\boxed{\sf 1km=1000m}[/tex]
[tex]\\ \sf\longmapsto 2.4km=2.4(1000)[/tex]
[tex]\\ \sf\longmapsto 2400m[/tex]
An object is launched at a 60 degree angle with an initial velocity of 100
m/s. What is the objects height? How long is the object in the air? What is
the objects's range (distance)? *
PLS HELP QUICK LOL
Answer:
Explanation:
The first question asks for the object's height. That is a y-dimension thing so we will use the one-dimensional formula:
[tex]v^2=v_0^2+2a[/tex]Δx and we are looking for delta x, which is the displacement of the object (here, the height since displacement in the y-dimension is height). Before we do that, though, we need to know the initial upwards velocity, which is found in:
[tex]v_{0y}=100sin(60)\\v_{0y}=90\frac{m}{s}[/tex]
And we also have to know from previous physics experience that the final velocity of an object at its max height is 0. Filling in:
[tex]0=(90)^2+2(-9.8)[/tex]Δx
[tex]0=8000-20[/tex]Δx and
-8000 = -20Δx so
Δx = 400 m
Now for the time it was in the air...we will use the simple equation
[tex]v=v_0+at\\0=90-9.8t\\-90=-9.8t\\t=9[/tex]
So the object is in the air for 9 seconds. Now we go to the other dimension, the x-dimension, to find out how far it goes horizontally. We will use the equation:
Δx = [tex]v_0t+\frac{1}{2}at^2[/tex] but first we have to find the horizontal velocity, which is NOT the same as the upwards velocity.
[tex]v_{0x}=100cos(60)\\v_{0x}=50\frac{m}{s}[/tex]
And another thing we need to know prior to solving problems like this is that the acceleration in the x-dimension is ALWAYS 0. Filling in the equation:
Δx = [tex]50(9)+\frac{1}{2}(0)(9)^2[/tex]
Δx = 500 m
show that Newton's first law is the special case of Newton's second law of motion
Please find attached photograph for your answer. Please do comment whether it is useful or not.
Define measurement What problems might me face it measurement systems were not established? (1+2=3)
Answer:
The process of comparing unknown quantities with known quantities is called measurement .If it measurement system were not established ,then there may create lots of problem such as: unequal measure ,anyone can get more ,or anyone can get less mass ,so on .
Convert 4 centimeters to meters using dimensional analysis and scientific notation. Please go step by step as I am having difficulty with this subject.
Answer:
[tex]thank \: you[/tex]
You have three flowers. You give
each a different amount of
water. What is one of the
possible controlled variables?
Answer:
flowers
Explanation:
flowers cannot change
Which of the following must an engineer take into account when designing a roller coaster?
the mass of the roller coaster
the rates at which the roller coaster will change directions
the total mass of the people that will ride the roller coaster
the acceleration of the roller coaster due to gravity
Answer:
Explanation:
All of the above.
Certainly a coaster could be designed without considering any one item of mass, gravity, or rates of direction change, but the success of the ride would be highly suspect.
Ignoring mass (of cars and/or riders) could lead to support members not being strong enough.
Ignoring rates of change of direction could lead to support members not being strong enough or make the forces on the riders uncomfortable.
Ignoring gravity could lead to support members not being strong enough or make the forces on the riders uncomfortable.
Identify the parts of the body based on the medical terminology given:
1. mr. heart describes pain that is midline, superior to the chest but inferior to the chin.
2. miss triangle says that she has a ‘tweak’ that is superior to the waist, inferior to the breast bone, lateral to the umbilicus on the left side of the body on the anterior surface.
3. mr. square states that he has pulled a muscle, inferior to the buttocks, superior to the knee, medial to the right side of the body on the posterior surface.
4. miss circle complains of a sharp pain inferior to her ears, superior to the scapula at midline on the posterior side of her body.
5. mr. x says that he has numbness and tingling on the anterior side of his left arm, distal to the wrist.
6. mrs. diamond describes a throbbing pain on the posterior side of her body, inferior to her shoulder blades and superior to her waist.
7. miss arrow states that she has had a pain on the left side of her body, superior to her neck and inferior to her forehead, lateral to her nose.
8. mr. teardrop says that he has been bitten by a spider lateral to his umbilicus on the anterior aspect of his body, superior to his hip on the right side of his body.
9. miss eight describes a burning sensation on the posterior side of her body, lateral to the spine on the left side of the body inferior to the shoulder blade, inferior to the waist but anterior to the knee.
10. mr. four shows you a deep wound on the anterior side of his body, medial to the left hip, lateral to the umbilicus, inferior to the collarbone and anterior to the waist.
Answer:
1. Right hypochondriac region (upper, right).
2. Epigastric region (upper, middle).
3. Left hypochondriac region (upper, left).
4. Right lumbar region (middle, right).
5. Umbilical region (centre).
6. Left lumbar region (middle, left).
7. Right iliac region (lower, right).
8. Hypogastric region (lower, middle).
9. Left iliac region (lower, left).
Explanation:
1. Right hypochondriac region (upper, right)- Liver, gallbladder, right kidney, small intestine.
2. Epigastric region (upper, middle)- stomach, liver, pancreas, duodenum, spleen, adrenal glands
3. Left hypochondriac region (upper, left)- Spleen, colon, left kidney, pancreas
4. Right lumbar region (middle, right)- Gallbladder, liver, right colon
5. Umbilical region (centre)- Umbilicus, parts of the small intestine, duodenum
6. Left lumbar region (middle, left)- Descending colon and left kidney
7. Right iliac region (lower, right)- Appendix and cecum
8. Hypogastric region (lower, middle)- Bladder, reproductive organs, sigmoid colon
9. Left iliac region (lower, left)- Descending and sigmoid colon.
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Suppose you're studying levels of job stress and measures of job efficiency in a nursing home. Which one of the following
statements best represents a data comparison that demonstrates a positive correlation?
O A. As job efficiency decreases, stress levels increase.
O B. As job efficiency increases, stress levels decline.
O C. As stress levels increase, job efficiency declines.
O D. As stress levels increase, job efficiency increases.
Answer:
B
hmgzzvmfzfjlpdyktdkdtdk
Answer:
b
Explanation:
flgifidfididicudifidififificiduxididixuduxi
31. Calculate the instantaneous speed of an
apple that falls freely from a rest position and
accelerates at 10 m/s2 for 1.5 seconds.
We have that the the instantaneous speed is given as
[tex]v=15m/s[/tex]
From the Question we are told that
Calculate the instantaneous speed
Accelerates at
[tex]a=10 m/s2 \\\\t= 1.5 seconds.[/tex]
Generally the equation for the instantaneous speed is mathematically given as
[tex]v=\frac{d}{t}[/tex]
Acceleration
[tex]a=\frac{v}{t}[/tex]
Therefore
[tex]v=10*1.5\\[/tex]
[tex]v=15m/s[/tex]
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A car traveling at 90 m/s can stop in a distance of 110 m. What is the magnitude of the cars acceleration as it slows down?
I think I have already answer this question. Anyways please do let me know whether it is useful or not
Warm air is more dense than cool air. Warm air is less dense than cool air Warm air and cool air have the same density
Answer:
You are exactly right. The molecules in hot air are moving faster than the molecules in cold air. Because of this, the molecules in hot air tend to be further apart on average, giving hot air a lower density. That means, for the same volume of air, hot air has fewer molecules and so it weighs less
I NEED THE ANSWER TO PASS SO I CAN GET MY PHONE BACK HELPPPPPPPPPPPPPP
Answer:
it would be c.
Explanation:
starts at zero and isn't a straight shot up
If it takes Tanya 9.4 hours to get to her cousin's house while driving an average of 40 mph, how far away does her
cousin live?
Answer:
376 miles
Explanation:
speed = distance / time
therefore distance = speed * time
distance = 40 miles/hr * 9.4 hr
then
distance = 375 miles
The length of a plate as measured with a ruler is 24.74 cm. The breadth as measured with a Vernier caliper is 6.78 cm. Calculate the are of the plate with exact significant figures.
The area of the plate is 167.78 centimeters.
The area of the plate can be calculated with the equation of the area of a rectangle:
[tex] A = l*w [/tex] (1)
Where:
l: is the length = 24.74 cm
w: is the width = 6.78 cm
By entering the above values into equation (1) we can find the area.
[tex] A = 24.74 cm*6.78 cm = 167.74 cm [/tex]
Therefore, the area of the plate is 167.78 centimeters.
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state Newton's laws of motion
Answer:
Newtons First Law (The Law of Inertia)- If an object is at rest it will stay at rest until a net force acts on it. If an object is in motion it will stay in motion until a net force acts on it.
Newtons Second Law (F=ma)- Force equals the mass of an object times it's acceleration.
Newton's Third Law- For every action there is an equal and opposite reaction.
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If an object is moving with a constant velocity then according to Newton's first law:
A- it will continue with this velocity only if a net external unbalanced force acts.
B- it will change its velocity if a net unbalanced external force is applied.
С- it will continue with its velocity as external unbalanced force acts.
D- it will continue with its velocity as friction only acts if an external unbalanced force is applied.
What is the displacement from 0 to 35.5 seconds
Answer:
12
cause the is no longer erra
Convert the following in to SI units without changing its values
a. 4000 g
b. 2.4 km
Plz help. I will make you a brailyest and 10,000 $
Answer:
4000g
Thank You
Hope it helps
Answer:
a 4 kg
b 2400 meter
Explanation:
International system of units Sl
the units are
kelvin for temperatures
meter for distance
Ampere for electric current
Second for time
Kg for mass
...etc
What phase of matter has the highest energy?
Answer:
plasma is the state with the highest energy level.
Give reason The SI system of unit is better than the MKS system
There are two primary reasons that SI is better than MKS. Both reasons come under the category that the MKS system is a proper subset of SI. That means that SI will do everything that MKS does, so you do not lose anything of MKS in going to SI but the are things that SI offers that MKS does not
A rocket blasts off and accelerates upward from rest with a rate of 15.4 m/s2. Calculate the
distance it will rise in 22 seconds.
NEED HELP!!
From question we have,
Inital velocity(u) = 0Accleration(a) = 15.4 m/s²Time taken(t) = 22 secNow, from the second equation of motion;
s = ut + ½at² { where s = distance covered }Just put all the values provided in the question, in this equation;
s = ut + ½at²s = (0 × 22) + ½ × 15.4 × 22 × 22s = 15.4 × 11 × 22s = 15.4 × 242s = 3726.8 mTherefore, distance it will rise in 22 seconds will be 3726.8m
Write any three condition required for nuclear fussion that are found in the sun.
Answer:
High pressure squeezes the hydrogen atoms together. They must be within 1x10-15 meters of each other to fuse. The sun uses its mass and the force of gravity to squeeze hydrogen atoms together in its core. We must squeeze hydrogen atoms together by using intense magnetic fields, powerful lasers or ion beams.
What is the kinetic energy of a 0.5 kg soccer ball that is traveling at a
velocity of 3 m/s?
What’s the answer
Answer:
kinetic energy = 1/2mv²
k.E =1/2 X 0.5 X 3²
k.e = 9/4
K.E = 2.25j
A man walks his dog on a very straight path in a park. He can walk back and forth as slow or fast as he wants to, but he has to stay on the path. Which of the following statements is correct for an arbitrary time interval?
a. His average speed can be greater than the magnitude of his average velocity.
b. His average speed can be less than the magnitude of his average velocity.
c. Since he is walking along a straight path, his average acceleration must be zero.
d. His average velocity must be zero.
Answer:
a. His average speed can be greater than the magnitude of his average velocity.
Explanation:
As speed is distance traveled over time traveled, this is always greater than zero if he has moved at all.
velocity is displacement over time traveled. As the man is allowed to return to the point of origin, his velocity at some point might be zero while his speed is positive.
Bobo, the clown, wants to set the world record for the furthest range traveled by a clown shot out of a cannon. Write a sentence describing the cannon that Bobo would need to use to accomplish this feat. Be sure to include the necessary initial velocity and the required angle of the cannon. Score: 0 / 1
In the human cannonball act makes use of of a special type of "cannon" that more safely ejects a person who acts as the "cannonball"
The world record for the longest flight by a human cannonball is approximately 194 feet and therefore the human cannon catapult that Bobo would need is one that would be able to propel him with an initial velocity of more than 120 kilometer per hour (more than the speed of the current record holder) with the cannon directed at an angle 45 degrees above the horizonal
The reason the values given above are correct is as follows:
The world record of the furthest range of the human cannonball is 193 ft. 8.8 inches. The maximum claim for the furthest range of a human cannonball is 200 ft. 4 in. Therefore, to safely set the world record would be to reach a range of 194 feet
The speed with which the world record was accomplished (120 km/jhr) should be expected to be exceeded given, horizontal speed in free fall motion is constant (decreasing in the presence of drag), and the conditions are likely to be more or less similar
In order to reach the furthest range, R, at the possible speed, the angle of inclination of the "cannon" required is 45°, according to the range formula, which is given as follows;
[tex]Range, \ R = \dfrac{v^2 \times sin(2\cdot \theta)}{g}[/tex]
The maximum range is given where θ = 45, such that sin(2·θ) = sin(90°) = 1
A further range than the world record van be obtained using the above values
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