Answers
The acceleration of the blocks once they are released from rest is \(a=\frac{M-m}{M+m} g\).
As per the details share in the above question are as follow,
The details are as below,
A friction less mass less pulley.
We have to determine the acceleration of the blocks once they are released from rest.
Assume that the string's tension is T and the block's acceleration is a.
Assuming the mass M free body diagram,
\($\mathrm{Ma}=\mathrm{Mg}-\mathrm{T}$\)
Taking into account the mass m free body diagram,
\($$\mathrm{ma}=\mathrm{T}-\mathrm{mg}$$\)
Now further solving the above given two equations we get,
\(a=\frac{M-m}{M+m} g\)
For more such question on acceleration.
https://brainly.com/question/14344386
#SPJ4
Related Questions
This problem, a squid at rest suddenly sees a predator coming toward it and needs to escape. Assume the following:______.
(i) Including the water in its internal cavity, the squid has a total mass of 6.50 kg.
(ii) The mass of the water in its cavity is 1.75 kg.
(iii) In order to escape its predators, the squid needs to achieve an escape speed of 2.5 m/s.
Answers
Answer:
6.79 m/s
Explanation:
By applying the principle of conservation of momentum.
The total momentum = MV - mv = 0 (since the squid is beginning at rest)
the mass of the squid (M) in absence of water in its cavity = (6.5 - 1.75) kg
= 4.75 kg
speed of the squid (V) = 2.5 m/s
mass of the water expelled (m) = 1.75 kg
speed of the water (v) = ???
∴
4.75 × 2.5 = 1.75 × v
\(v = \dfrac{4.75 \times 2.5}{1.75 }\)
v = 6.79 m/s
if a bird catches its prey from a height which was initially at rest then momentum is conserved for?
Bird
Prey
Both
None
Answers
For the two animals involved (bird and its prey), the momentum of both animals is conserved.
What is principle of conservation of linear momentum?
The principle of conservation of momentum states that if two objects collide, then the total momentum before and after the collision will be the same if there is no external force acting on the colliding objects.
Initial momentum = final momentum
Thus, for the two animals involved (bird and its prey), the momentum of both animals is conserved.
Learn more about conservation of linear momentum here: https://brainly.com/question/7538238
#SPJ1
A boy pulls his 9.0 kg sled, applying a horizontal force of 14.0 N (rightward). The coefficient of friction between the snow and the sled is 0.12. Determine the net force and the acceleration of the sled. Draw a free-body diagram for the sled; use appropriate force symbols to label the type of each force acting on the sled.
Answers
Here is the answer, dud
What is the saying that can help you remember the order of the visible spectrum? ROYBVIG ROYGBIV RIBYOVG RYOBIVG
Answers
Answer:
ROYGBIV
Explanation:
mark me brainliest pls
Answer:
ROYGBIV
Explanation:
Identify the law, write the equation and calculate the answer to the problem below.
An incident light ray strikes water at an angle of 45 degrees. The index of refraction of air is 1.0003, and the index of refraction of water is 1.33. What is the angle of refraction rounded to the nearest whole number?
Answers
Find refractive index first
\(\\ \rm\Rrightarrow \mu=\dfrac{c}{v}\)
\(\\ \rm\Rrightarrow \mu=\dfrac{1.0003}{1.33}\)
\(\\ \rm\Rrightarrow \mu =0.75\)
Now
\(\\ \rm\Rrightarrow \dfrac{sini}{sinr}=\mu\)
\(\\ \rm\Rrightarrow \dfrac{sin45}{sinr}=0.75\)
\(\\ \rm\Rrightarrow \dfrac{sin45}{0.75}=sinr\)
\(\\ \rm\Rrightarrow sinr=0.94\)
\(\\ \rm\Rrightarrow r=sin^{-1}(0.94)\)
\(\\ \rm\Rrightarrow r=70^{\circ}\)
What is the elevation of the highest point of the hill
Answers
Answer:
Mount Everest, located in Nepal and Tibet, is usually said to be the highest mountain on Earth. Reaching 29,029 feet at its summit, Everest is indeed the highest point above global mean sea level—the average level for the ocean surface from which elevations are measured. But the summit of Mt.
- Ocean Service
how in a simple machine direction changer
Answers
In a simple machine the direction changes by using the pulley. By applying the force on the pulley, by pushing down and the object moves up.
The simple machine allows to change the direction is a pulley. The pulley machine acts as a direction changer and is also used to change the direction of the force. When the wheel rotates, the cord can move in either direction.
The pulley has a wheel and hook. By attaching the hook to the cord, the wheel rotates making the object move up or down much easier when the force is applied to the pulley. These machines use pivot points to balance.
Hence, the simple machine called a pulley, is used to change the direction of force and makes the object moves up.
To learn more about Pulley:
https://brainly.com/question/28974480
#SPJ1
Q4. (a) An acre-foot is the volume of water that would cover 1 acre of flat land to a depth of 1
foot. How many gallons are in 1 acre-foot?
Answers
Answer:
326,000
Explanation:
One acre-foot equals about 326,000 gallons, or enough water to cover an acre of land, about the size of a football field, one foot deep. An average California household uses between one-half and one acre-foot of water per year for indoor and outdoor use.
In a simply supported beam loaded with uniformly distributed loading (U.D.L) over the whole section, the bending stress is ............. at top and ................ at bottom.
Answers
Answer:
Explanation:
The bending stress is tensile at top and zero at bottom.
1 x 1015 electrons are pushed through a 10 Ω wire in one minute. What is the voltage of the power source? (e = -1.602 x 10-19 C)
Answers
The voltage of the power source flowing through the given wire is determined as 2.67 x 10⁻⁵ V.
Voltage of the power source
The voltage of the power source is determined from ohm's law as shown below;
V = IR
where;
I is currentR is resistanceV is voltageBut, I = Q/t
V = (Q/t)R
\(V = \frac{QR}{t} \\\\V = \frac{(1\times 10^{15} \times 1.602\times 10^{-19} \ C) \times \ 10 \ ohms}{1 \times 60\ s} \\\\V = 2.67 \times 10^{-5} \ V\)
Thus, the voltage of the power source flowing through the given wire is determined as 2.67 x 10⁻⁵ V.
Learn more about voltage here: https://brainly.com/question/14883923
#SPJ1
WILL GIVE BRAINIEST PLZ HEP!!!!!!
Which is a component of skill-related fitness?
Flexibility
Reaction time
Muscular strength
Body Composition
Answers
Answer:
B. Reaction Time
Explanation:
Reaction Time is the amount of time it takes to respond to anything.
Two spherical objects have masses of 2.5 x 107 kg and 7.5 x105 kg. Their centers are separated by a distance of 5200 m. Find the gravitationalattraction between them.
Answers
Given data
*The spherical object has a mass is m_1 = 2.5 × 10^7 kg
*The other spherical object has a mass is m_2 = 7.5 × 10^7 kg
*The separation distance between them is r = 5200 m
The formula for the gravitational attraction force between them is given as
\(F=\frac{Gm_1m_2}{r^2}\)*Here G is the gravitational constant.
Substitute the known values in the above expression as
\(\begin{gathered} F=\frac{(6.67\times10^{-11})(2.5\times10^7)(7.5\times10^7)}{(5200)^2} \\ =4.62\times10^{-3}\text{ N} \end{gathered}\)Hence, the gravitational attraction force between them is F = 4.62 × 10^-3 N
one of the primary characteristics present in situations in which management science techniques are applied is_____.
Answers
One of the primary characteristics present in situations in which management science techniques are applied is that the management problems have only a few variables. Thus, the correct option is A.
What are Management science techniques?Management science is important while doing any research, business, or study because it helps the organizations in identification of the issues which they need to solve, streamline management efforts, use resources more effectively, and also develop roadmaps for achieving the set goals.
Management problems are studied and these are so complicated that managers need help to analyze a large number of variables before doing any research.
Therefore, the correct option is A.
Learn more about Management science here:
https://brainly.com/question/30325986
#SPJ1
Your question is incomplete, most probably the complete question is:
One of the primary characteristics present in situations in which management science techniques are applied is ________.
A) that the management problems have only a few variables
B) that the situation deals with quantifiable factors such as sales
C) that the situation deals with the physiological, safety, social, esteem, and self-actualization needs of organization members
D) that the situation deals with assessing qualitative factors of the workplace or environment
E) that social implications are the guidelines for making a particular decision
A ball is thrown from the catcher to the 3rd baseman with a speed of 20
meters per second. If it travels 30 m, how long did it take to get to the 3rd
baseman?
Answers
Answer:
The ball took 1.5 seconds to get to the 3rd baseman
Explanation:
Constant speed motion
If a body travels the same distance per unit of time, the body has a constant speed. The equation for the distance x is:
x=v.t
Where v is the constant speed and t is the time.
Solving for t:
\(\displaystyle t=\frac{x}{v}\)
The ball is thrown with a speed of v= 20 m/s and travels x=30 m, thus the time taken is:
\(\displaystyle t=\frac{30}{20}=1.5\)
The ball took 1.5 seconds to get to the 3rd baseman
Incorrect statement is
Answers
Answer: I believe C is incorrect
Explanation:
I'm sorry if it wasn;t tho!!
Explanation:
Fluorine has the highest electron affinity, therefor Chlorine an not have the highest electron affinity.
Is it possible for an object to be accelerating and at rest at the same time? Explain.
Answers
Answer:
Yes
Explanation:
acceleration is a change in velocity, so an object might be momentarily at rest but a split-second later have some speed, i.e. it can be changing its velocity even if it is momentarily at rest.
Which one of the following statements concerning weight and energy balance is most accurate?
A. People generally need the same amount of physical activity to maintain weight stability.
B. Regular physical activity doesn’t impact the percentage of body fat in children and adolescents.
C. It’s possible to achieve weight stability by doing the equivalent of 60–120 minutes a week of moderate-intensity walking.
D. The optimal amount of physical activity needed to maintain weight is unclear.
Answer: D. I took the test and got it right
Answers
The correct answer choice concerning weight and energy balance which is most accurate is the optimal amount of physical activity needed to maintain weight is unclear.
What is energy balance?Energy balance refers to the way in balance is achieved when intake of energy is equal to energy expended.
Energy refers to the impetus behind all motion and all activity. If is also the capacity to do work. Energy is measured in a unit dimensioned in mass × distance²/time² (ML²/T²) or the equivalent.
So therefore, the correct answer choice concerning weight and energy balance which is most accurate is the optimal amount of physical activity needed to maintain weight is unclear.
Learn more about energy balance:
https://brainly.com/question/26103866
#SPJ1
A slider bearing consists of a sleeve surrounding a cylindrical shaft that is free to move axially within the sleeve. A lubricant (e.g, grease) is in the gap between the sleeve and the shaft to isolate the metal surfaces and support the stress resulting from the shaft motion. The diameter of the shaft is 2.54 cm, and the sleeve has an inside diameter of 2.6 cm and a length of 5.08cm.
a) If you want to limit the total force on the sleeve to less than 2.2 N when the shaft is moving at a velocity of 6.1 m/s, what should the viscosity of the grease be? What is the magnitude of the flux of momentum in the gap, and which direction is the momentum being transported?
Answers
Explanation:
To solve this problem, we'll use the Reynolds equation for the hydrodynamic pressure in a slider bearing. The equation is given by:
P = (6 * η * U * h) / L^2
where P is the hydrodynamic pressure, η is the dynamic viscosity of the lubricant, U is the relative velocity between the shaft and the sleeve, h is the film thickness (the gap between the shaft and the sleeve), and L is the length of the bearing.
Given:
Inside diameter of the sleeve (Ds) = 2.6 cm
Diameter of the shaft (D) = 2.54 cm
Length of the sleeve (L) = 5.08 cm
Relative velocity (U) = 6.1 m/s
Maximum total force on the sleeve (F_max) = 2.2 N
First, we need to calculate the film thickness (h):
h = (Ds - D) / 2 = (2.6 - 2.54) / 2 = 0.03 cm = 0.0003 m
Next, we need to find the bearing area (A):
A = π * D * L = π * 0.0254 * 0.0508 ≈ 0.004079 m^2
Now, we can find the maximum allowable pressure (P_max):
P_max = F_max / A = 2.2 / 0.004079 ≈ 539.17 Pa
Now, we can solve for the viscosity of the grease (η):
η = (P_max * L^2) / (6 * U * h) = (539.17 * (0.0508)^2) / (6 * 6.1 * 0.0003) ≈ 0.04746 Pa·s
The viscosity of the grease should be approximately 0.04746 Pa·s to limit the total force on the sleeve to less than 2.2 N.
Now, let's calculate the magnitude of the momentum flux in the gap. The momentum flux (also known as shear stress) is given by:
τ = η * (du/dy)
where τ is the shear stress, du is the change in velocity across the gap, and dy is the thickness of the gap.
The velocity gradient (du/dy) in the gap can be calculated as:
du/dy = U / h = 6.1 / 0.0003 ≈ 20333.33 s^(-1)
Now, we can find the shear stress (τ):
τ = η * (du/dy) = 0.04746 * 20333.33 ≈ 965.03 N/m^2
The magnitude of the momentum flux in the gap is approximately 965.03 N/m^2. The direction of the momentum transport is along the direction of the motion of the shaft, which is axially along the sleeve
When scientists combined Hydrogen gas with Oxygen gas and added a small bit of energy, an explosion occurred. When this ras
done in a dosed container, water droplets appeared on the side of the container.
Answers
The reaction between the Hydrogen gas with Oxygen gas and adding a small bit of energy is called a combustion reaction.
What is a combustion reaction?This is a description of a chemical reaction between hydrogen gas (H₂) and oxygen gas (O₂) to form water (H₂O), which is an example of a combustion reaction.
In this reaction, hydrogen gas and oxygen gas react with each other to form water vapour (H₂O), which then condenses on the sides of the container to form water droplets.
The energy added to the system (in the form of a spark or heat) provides the activation energy needed to initiate the reaction. The reaction releases a large amount of energy in the form of heat and light, which is what causes the explosion.
The balanced chemical equation for this reaction is:
2H₂(g) + O₂(g) → 2H₂O(g)
This equation shows that two molecules of hydrogen gas (H₂) react with one molecule of oxygen gas (O₂) to form two molecules of water vapour (H₂O). The reaction consumes all the hydrogen and oxygen and produces only water.
The appearance of water droplets on the side of the container indicates that the water vapour produced by the reaction has condensed back into a liquid state due to the cooling of the container. This is a common observation in combustion reactions that produce water vapour as a product.
To know more about combustion reactions follow
https://brainly.com/question/7323913
#SPJ9
A cliff diver stands at the top of a cliff and falls forward off the cliff. If the cliff is 25 m tall, how fast (in m/s) is the diver going as she enters the water below?
Answers
With the use of formula, the the diver will enters the water with the speed of 22.1 m/s
What is Speed ?Speed is how fast an object is moving which can be defined as distance over time.
Given that a cliff diver stands at the top of a cliff and falls forward off the cliff. If the cliff is 25 m tall, to know how fast the diver going as she enters the water below, let us make use of the equation below
v² = u² + 2gH Where
v = ?u = 0g = 9.8 m/s²H = 25 mSubstitute all the parameters into the equation
v² = 2× 9.8 × 25
v² = 490
v = √490
v = 22.1 m/s
Therefore, the diver is going as she enters the water with the speed of 22.1 m/s
Learn more about Speed here: https://brainly.com/question/4931057
#SPJ1
40 POINTS!!!
A wave travels along a stretched horizontal rope. The vertical distance from crest to trough for this wave is 18 cm and the horizontal distance from crest to trough is 26cm.
Part A
What is the wavelength of this wave?
Express your answer using two significant figures
Part B
What is the amplitude of this wave?
Express your answer using two significant figures.
Answers
part a. the wavelength of this wave is 26 cm
part b. The amplitude (A) of a wave is 9 cm
What is wavelength?The wavelength (λ) of a wave is described as the distance between two consecutive points on the wave that are in phase.
In this scenario, the distance between two corresponding points on the wave will be equal to the horizontal distance from crest to trough, which is 26 cm.
Hence, the wavelength of the wave is: λ = 26 cm
The amplitude (A) of a wave is described as the maximum displacement of a particle from its rest position as the wave passes through it.
In this scenario, the vertical distance from crest to trough is 18 cm, which is equal to twice the amplitude.
Learn more about amplitude at:
https://brainly.com/question/3613222
#SPJ1
HELP URGENT- will give brainliest if correct
Answers
Answer:
6 km is the right answer
hope it helps you
Explanation:
please mark me as brainliest
Question 1 of 10
Which nucleus completes the following equation?
239UHe+?
A. 228 Th
B. 2220
c. 23. Pu
D. 78Th
SUBMIT
Answers
Answer:
Option D. ²²²₉₀Th
Explanation:
Let the unknown be ⁿₘZ. Thus, the equation becomes:
²²⁶₉₂U —> ⁴₂He + ⁿₘZ
Next, we shall determine n, m and Z. This can be obtained as follow:
For n:
226 = 4 + n
Collect like terms
226 – 4 = n
222 = n
n = 222
For m:
92 = 2 + m
Collect like terms
92 – 2 = m
90 = m
m = 90
For Z:
ⁿₘZ => ²²²₉₀Z => ²²²₉₀Th
Therefore, the complete equation becomes:
²²⁶₉₂U —> ⁴₂He + ⁿₘZ
²²⁶₉₂U —> ⁴₂He + ²²²₉₀Th
Thus, the unknown is ²²²₉₀Th
A 15 year old boy requires eyeglasses with lenses of 2 diopters power in order to read a book at 25 cm. Five years later he finds that while wearing the same glasses, he must hold a book 40 cm from his eyes. What power of lenses does he require at 20 years in order to read a book at 25 cm?
Answers
At 20 years old, the boy would require eyeglasses with lenses of approximately -1.49 diopters power in order to read a book at 25 cm.
How to solve for the power of lenses1/f1 = 1/v - 1/u1
1/f1 = 1/∞ - 1/0.25 (converting 25 cm to meters)
1/f1 = 0 - 4
1/f1 = -4
f1 = -1/4
f1 = -0.25 meters
The initial lens power (P1) is the reciprocal of the focal length:
P1 = 1/f1
P1 = 1/-0.25
P1 = -4 diopters
Now let's calculate the final focal length (f2) using the final distance (v2) of 40 cm:
1/f2 = 1/v2 - 1/u1
1/f2 = 1/0.40 - 1/0.25
1/f2 = 2.5 - 4
1/f2 = -1.5
f2 = -1/1.5
f2 = -0.67 meters
The final lens power (P2) is the reciprocal of the focal length:
P2 = 1/f2
P2 = 1/-0.67
P2 ≈ -1.49 diopters
Therefore, at 20 years old, the boy would require eyeglasses with lenses of approximately -1.49 diopters power in order to read a book at 25 cm.
Read more on power of lenses here https://brainly.com/question/30995178
#SPJ1
A pencil is dropped from rest from a height of 1.8 meters above the ground. How much time does it take the pencil to hit the ground?
Answers
Answer:
0.60s
Explanation:
Using the motion equation as follows:
S = ut + 1/2gt²
Where;
S = distance travelled (m)
u = initial velocity (m/s)
t = time (s)
g = acceleration due to gravity (m/s²)
Based on the information provided, S = 1.8m, u = 0m/s, t = ?
S = ut + 1/2gt²
1.8 = (0×t) + 1/2 (9.8t²)
1.8 = 0 + 4.9t²
1.8 = 4.9t²
t² = 1.8/4.9
t² = 0.3673
t = √0.3673
t = 0.6060
t = 0.60s
which if the following is the best example of a thermodynamiclly open system?
Answers
The following which is the best example of a thermodynamically open system is a cup of coffee and is therefore denoted as option A.
What is an Open system?This is referred to as the type of system in which matter and/or energy may enter and exit. There is also an exchange of both matter and energy with its surroundings.
An example is a cup of coffee because thermal energy is lost to the surrounding which is usually in the form of vapor. Other options such as our universe and insulated gas cylinder are closed system which is why there is usually no exchange of energy with external environment thereby making it the correct choice.
Read more about Open system here https://brainly.com/question/14266156
#SPJ1
The full question is:
which if the following is the best example of a thermodynamiclly open system?
A. a cup of coffee
B. our universe
C. a greenhouse
D. an insulated gas cylinder
The weather that characterizes an area is the O latitude of that area O barometric pressure of that area climate of that area O geography of that area
Answers
Answer:
climate of that area
Explanation:
1. an object given an initial velocity,which can move under gravity and is affected by air resistance is an example of projectile motion
A.True. B.False
2.the horizontal component is always equal to the vertical component of the velocity
A.True B.False
3.The formula Vx=Vø tan Ø is used to determine the magnitude of the horizontal component of the velocity
A.True B.False
4.The velocity is directed vertically upward
A.True. B.False
5.when no air acts on a projectile,it's horizontal acceleration is upward gravity
A.True B.False
6.A stone thrown into the air is an example of projectile motion
A.True. B.False
7.The time to reach the top will be 1.5625s if. projectile is thrown at angle 30° above the ground with a velocity of 100ft/s
A.True B.False
Answers
2. B. False
3. A. True
4. B. False
5. B. False
6. A. True
7. B. False
Explanation:
1. The statement is true. Projectiles are objects that are launched into the air and then follow a curved path under the influence of gravity and air resistance.
2. The statement is false. The horizontal component of the velocity is independent of the vertical component of the velocity, and they can have different values.
3. The statement is true. The formula Vx=Vø tan Ø is the formula for the horizontal component of the initial velocity of a projectile.
4. The statement is false. The velocity of a projectile is directed at an angle to the horizontal, with both horizontal and vertical components.
5. The statement is false. When no air acts on a projectile, its horizontal acceleration is zero, because there is no force acting in the horizontal direction. The vertical acceleration is still due to gravity.
6. The statement is true. A stone thrown into the air follows a curved path under the influence of gravity, making it an example of projectile motion.
7. The statement is false. The time to reach the top of the projectile's path depends on the initial velocity and angle of launch, as well as the acceleration due to gravity. The time to reach the top can be calculated using the formula t = Vy/g, where Vy is the vertical component of the initialvelocity, g is the acceleration due to gravity, and t is the time. Using this formula, the time to reach the top of the projectile's path can be calculated as:
t = Vy/g = Vø sin Ø/g = (100 ft/s)(0.5)/(32.2 ft/s²) = 1.55 s (approx.)
Therefore, the statement is false.
Calculate the displacement Vector for a particle moved From Thepoint
(4, 3, 2) to a point (8,3,6)
Answers
Answer:
first braliest me
Explanation:
a beam of monochromatic light travels through flint glass, crown glass, lucite, and water. the speed of light beam is slowest in
Answers
Answer:
The answer is flint glass.