Answer:
The soccer discs will be change.
Explanation:
Given that,
Opposing force = 5 N
We know that,
Drag force :
Drag force is directly proportional to the square of velocity.
[tex]F_{d}\propto v^2[/tex]
[tex]F_{d}=\dfrac{1}{2}C\rho Av^2[/tex]
Where, C = drag constant
[tex]\rho[/tex] = density
A = area
v= velocity
We need to find what happen to the soccer discs velocity
According to drag force,
If we applies a force of 5 N opposing the motion of the disc then the velocity of the soccer discs will be change.
Hence, The soccer discs will be change.
Who discovered White Dwarfs?
Answer: Adriaan van Maanen discovered White Dwarfs
A 6.46 kg object moving with a velocity of 5.23 m/s is struck from behind by a moving 11.77 kg object. They stick together, moving off with a mutual velocity of 17.93 m/s. What was the original velocity of the 11.77 kg object before the collision?
Answer:
is
Explanation:
e
A ball is thrown horizontally from the top of
a building 51 m high. The ball strikes the
ground at a point 120 m from the base of the
building.
The acceleration of gravity is 9.8 m/s
2
.
Find the time the ball is in motion.
Answer in units of s.
If the time the ball is in motion is 3.22617 s
Find the initial velocity of the ball.
Answer in units of m/s.
Answer:
whattt
Explanation:
sorry dear I did not understandConsciousness is still a controversial issue among psychologists and philosophers.
T
F
Answer: it’s true
Explanation:
Answer:
the answer is true
Explanation:
i just got it right on the test 2020
A toy car, initially travelling in a straight line at 30.0 cm/s, slows down with a constant linear acceleration of 3.0 cm/s2. How much time passes before the toy car comes to a halt?
Answer:
10s
Explanation:
Given parameters:
Initial velocity = 30cm/s
Acceleration = 3cm/s²
Unknown:
Time it takes for the car to come to rest = ?
Solution:
To solve this problem, we apply the right motion equation;
Our final velocity - 0
So;
V = U + at
Since the car is slowing down, it will have a negative acceleration
Insert the parameters and solve;
0 = 30 + (-3) x t
-30 = -t
t = 10s
The diffuser in a jet engine is designed to decrease the kinetic energy of the air entering the engine compressor without any work or heat interactions. Calculate the velocity at the exit of a diffuser when air at 100kPa and 20oC enters it with a velocity of 500 m/s and the exit is 200kPa and 90oC.
Answer: 330.18m/s
Explanation:
Given data:
T1 = 20 °C
T2 = 90 °C
V = 500m/s
P1 = 100kpa
P2 = 200kpa.
Cp = 1.007kj/KgK
Solution:
Energy balance
Ein - Eout = change in Esystem.
We know
Exit velocity
V2 = (V1^2 + 2(h1 - h2)^0.5 = [V1^2 + 2Cp (T1-T2)]^0.5
input given data into the formula
V2 = [500^2 + 2 (1.007) * (20 - 90) * 1000/1 ]^0.5
V2 = 109020^0.5
V2 = 330.18m/s
Velocity at the exit is 330.18m/s
A trebuchet at ground levels throws a boulder with an initial velocity of 25 m/s at 30 degrees.
What was the magnitude of the final velocity of the boulder before it hit the ground?
a
30 m/s
b
10 m/s
C С
25 m/s
ОООООО
d
20 m/s
e
27.5 m/s
12.5 m/s
Answer:
The correct option is;
C. 25 m/s
Explanation:
The initial velocity with which the boulder was thrown = 25 m/s
The path in which the boulder projectile moves = 30°
For projectile motion, we have;
The time it takes the boulder to hit the ground is given by the following equation;
y = y₀ + v₀·sin(θ₀)t -¹/₂·g·t²
Where;
y = The height of the boulder
y₀ = The initial height of the boulder = 0
g = The acceleration due to gravity = 9.81 m/s²
When the boulder touches the ground again, the value of y = 0. therefore, we have;
0 = 0 + 25 × sin(30)t -¹/₂ × 9.81 × t²= 12.5·t - 4.905·t²
From which we have, t = 0 or t ≈ 2.55 s
At t = 2.55 s The vertical velocity = v₀sin(θ₀) - g·t = 25 × 0.5 - 9.81×2.55 = -12.5 m/s
The vertical velocity, [tex]v_y[/tex] = -12.5 m/s
The horizontal velocity, vₓ = v₀·cos(θ₀) = 25×cos(30) ≈ 21.65 m/s
The magnitude of the resultant velocity before, the boulder hits the ground is given as follows
[tex]\left | v \right |[/tex] = √((vₓ)² + ([tex]v_y[/tex])²) = √(12.5² + 21.65²) = √625 = 25
The magnitude of the resultant velocity before, the boulder hits the ground is 25 m/c
Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+ charge.
How are these two alike? same number of __________
How are they different? different number of ________
Group of answer choices:
A. protons, neutrons
B: protons, electron
C: electrons, neutrons
D: electrons, protons
Can you pls answer the 2 questions
Answer:
1) False, since constant speed means constant velocity, but with constant direction as well. Velocity is speed with direction. When you move in a circle, there are boundaries which means that a constant moving speed will cause the object to veer(move in different directions) to maintain movement, If it doesn't veer, the object will deflect(rebound) off the surface due to friction, and impact force or depending on its physical bond of malleability or density.
2a) Create position vectors by drawing a ray from the center(origin) of the circle to each of your desired points, it's magnitude will be the radius(how convenient). Both of these vectors go from the center of the circle to the position on the circle. In general, the distance from the origin to a point is called the radius vector.
2b)
The bar chart shows the percentage of adults in the U.S. living with certain heart disease risk factors. Which conclusion can be drawn from the chart?
A.
About 30% of adults are living with obesity, high blood pressure, or both.
B.
Diabetes is the leading cause of heart disease among adults who have high cholesterol.
C.
Over 50% of the reporting adults are living with risk factors that can be controlled through diet and exercise.
D.
If an adult leads an inactive lifestyle, he has a 38% chance of getting heart disease.
Answer : Option C) Over 50% of the reporting adults are living with risk factors that can be controlled through diet and exercise.
Explanation : Assuming that the chart is as per the attachment in the answer. The answer will be more than 50 percent of the adults are living with the risk factors and it can be easily controlled through diet and exercise. It is an alarming signal to notice the health issues amongst the people.
a cell containing cyanamide is least likely to carry on the process of what transport
Answer:
Active transport
What is the acceleration of a 349 kg object that moved with a force of 750 N?
Answer:
The answer is 2.15 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
where
f is the force
m is the mass
From the question we have
[tex]a = \frac{750}{349} \\ = 2.14899713...[/tex]
We have the final answer as
2.15 m/s²Hope this helps you
Describe effect of artificial selection on the process of evolution
Answer: The process is called artificial selection because people (instead of nature) select which organisms get to reproduce.
Explanation: This is evolution through artificial selection and the characteristics to reproduce, causing the evolution of farm stock.
What is an important property about the wires of a circuit?
Answer:
That they conect the curcut and porvide electricity.
Explanation:
Answer:the wires must be conducted so that they allow for electrons to flow through the material
Explanation:
Which ballet move is most similar to a track runner jumping over hurdles?
a Balancing on one leg
b Complex footwork patterns
c Straight leg dance kick
d Split leap
In the product 6, what does the coefficient mean?
Answer: Explanation:
A number used to multiply a variable. Example: 6z means 6 times z, and "z" is a variable, so 6 is a coefficient. ... Example: In ax^2 + bx + c, "x" is a variable, and "a" and "b" are coefficients.
85POINTS ASAP!!!!!!!!!!!!!!
Answer:
hi
Explanation:
19. The particles in an object move very quickly and are spread apart. Then they move slower and get slower and get closer together but do not form regular and organized patterns. What change of state occured? How do you know?
Answer:
The transformation went from a gas to a solid which is a Deposition
Explanation:
Deposition is the phase transition in which gas transforms into solid without passing through the liquid phase. Deposition is a thermodynamic process. The reverse of deposition is sublimation and hence sometimes deposition is called desublimation.
The change of state that occurred was that the object went from gas to solid in a process of Deposition.
The properties of gas and solid:
Particles in gas move very quickly which leads to them being spread apart Particles in solids are quite slow and so are close togetherBased on the properties of the object before and after the change, we can infer that the object went from gas directly to solid. This process is called a deposition.
In conclusion, a deposition occurred with gas changing directly to solid.
Find out more at https://brainly.com/question/24651908.
HELP ME PLEASE. i need to turn this in by tomorrow, also pls use the words above^ thank you i’ll mark u the brainliest.
Answer:
the corrdct answer is core
Which universal force acts only on the protons and neutrons in a nucleus? *
5 points
electric
gravitational
magnetic
strong nuclear
Option 5
Answer:
a strong nuclear force is a powerful force of attraction that acts only on the neutrons and protons in nucleus
so the answer is: STRONG NUCLEAR
Which object has a net force of –5 N down?
Answer:
y
Explanation:
i did it
The object in image [x] has a net force of -5 Newtons in the vertical direction.
What is force?In order to move a body of mass (m) with an acceleration of 'a' m/s², a force of magnitude equal to the product of body's mass and the required acceleration is needed. Mathematically -
F = ma
It is a vector quantity. In a three dimensional coordinate, the force vector can be resolved as -
[F] = F[x] a[x] + F[y] a[y] + F[z] a[z]
[F] = m {A[x] a[x] + A[y] a[y] + A[z] a[z]}
We have free - body diagrams as shown in the image.
If we observe image [x], we can easy calculate that -
The force along the horizontal F[h] = 15 - 15 = 0
The force along the vertical F[v] = 20 - 25 = - 5 Newtons
Therefore, the object in image [x] has a net force of -5 Newtons in the vertical direction.
To solve more questions on force, visit the link below-
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[Refer to the image attached for full question]
Please help. Hurry. Almost out of time. Hurry hurry.
Answer: i think unbaleannce
Explanation:
Solve for the resultant displacement of the two vectors: A = 2.3 km at 45 degrees B = 4.8 km at 90 degrees
Answer:
The resultant of the vector is 6.63 km
Explanation:
Given;
vector A = 2.3 km 45°
vector B = 4.8 km 90°
The vectors in the x - direction is given by;
Aₓ = 2.3 km Cos 45° = 1.6263 km
Bₓ = 4.8 km Cos 90° = 0
The sum of the vectors in x -direction is given by;
∑X = 1.6263 km + 0 = 1.6263 km
The vectors in the y - direction is given by;
Ay = 2.3 km Sin 45 = 1.6263 km
By = 4.8 km Sin 90° = 4.8 km
The sum of the vectors in y -direction is given by;
∑Y = 1.6263 km + 4.8 km = 6.4263 km
The resultant vector is given by;
R = √(X² + Y²)
R = √[(1.6263)² + (6.4263)²]
R = 6.63 km
Therefore, the resultant of the vector is 6.63 km
The resultant displacement of the two vectors A and B is 6.63 Km and this can be determined by using the given data.
Given :
The two vectors: A = 2.3 km at 45 degrees B = 4.8 km at 90 degrees.
In order to determine the resultant displacement, first, determine the vector in x-direction:
[tex]\rm A_x=2.3cos45=1.6263 \;Km[/tex]
[tex]\rm B_x=4.8cos90=0 \;Km[/tex]
Now, the sum of the vectors is given by:
[tex]\rm \sum X=1.6263+0=1.6263\;Km[/tex]
In order to determine the resultant displacement, first, determine the vector in y-direction:
[tex]\rm A_y=2.3sin45=1.6263 \;Km[/tex]
[tex]\rm B_y=4.8sin90=4.8 \;Km[/tex]
Now, the sum of the vectors is given by:
[tex]\rm \sum Y = 1.6263+4.8=6.4263[/tex]
Now, the resultant vector is given by:
[tex]\rm R = \sqrt{X^2+Y^2}[/tex]
[tex]\rm R=\sqrt{(1.6263)^2+(6.4263)^2}[/tex]
R = 6.63 Km
The resultant displacement of the two vectors A and B is 6.63 Km.
For more information, refer to the link given below:
https://brainly.com/question/16380983
what is mechanical energy
Explanation:
In physical sciences, mechanical energy is the sum of potential energy and kinetic energy. It is the macroscopic energy associated with a system. The principle of conservation of mechanical energy states that if an isolated system is subject only to conservative forces, then the mechanical energy is constant. If an object moves in the opposite direction of a conservative net force, the potential energy will increase; and if the speed (not the velocity) of the object changes, the kinetic energy of the object also changes. In all real systems, however, nonconservative forces, such as frictional forces, will be present, but if they are of negligible magnitude, the mechanical energy changes little and its conservation is a useful approximation. In elastic collisions, the kinetic energy is conserved, but in inelastic collisions some mechanical energy may be converted into thermal energy. The equivalence between lost mechanical energy (dissipation) and an increase in temperature was discovered by James Prescott Joule.
Using only one management style with all people is the most effective leadership technique for any organization.
Answer:
False
Explanation:
More than one management style with all people is the most effective leadership technique for any organization. So, the given statement is False.
What is Leadership technique?Leadership styles are defined as those adopted by company leaders to increase efficiency, satisfaction, growth and advancement in all positions in the organization. It requires a different style in different situations and each leader needs to know when to show a special behavior.
These strategies define every leader's personal leadership style. Some effective leadership Techniques are as follows:
Understanding the objectives clearlyGet to know the teamAlways be a learnerListen.Learn to delegate.Thus, more than one management style with all people is the most effective leadership technique for any organization. So, the given statement is False.
Learn more about Marketing techniques, here:
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Stored energy is_____ Energy.
A) Nuclear
B) Potential
C) Kinetic
D) Light
Water being held back by a dam possesses which type of energy?
A) Kinetic energy
B)Potential Energy
C) Nuclear energy
D) Chemical energy
!!! I NEED URGENT HELP !!!
Answer:
P = W / t where P is power and W the work done
P = F x / t = F v
Then v = P / F = 450 J/s / 350 N = 1.29 m/s
T = 46.6 m / 1.29 m/s = 36.1 sec where T is the required time
When food is exposed to the air, it can lose electrons. The loss of electrons creates reactive molecules that work to destroy the chemical bonds in the food, causing it to spoil. What are these reactive molecules called?
Answer:
Free Radicals
Explanation:
AP3X
What type of sedimentary rock is gypsum.
Answer:
metamorpic rock
Explanation:
the rock stay near the ocen
What is the rule for calculating current in a series circuit?
Current in a series circuit =
(voltage between the ends of the circuit)
divided by
(the sum of all the individual resistors in the circuit) .
