Answer:
b. A = 3.14 m/s, B = -3.14 m/s
Explanation:
Assuming this refers to an Atwood machine, draw free body diagrams for each mass.
For mass A, there are two forces: tension T₁ pulling up and weight m₁g pulling down.
For mass B, there are two forces: tension T₂ pulling up and weight m₂g pulling down.
For the pulley, there are two torques: tension T₁r pulling counterclockwise and tension T₂r pulling clockwise.
Sum of forces on A in the +y direction:
∑F = ma
T₁ − m₁g = m₁a
T₁ = m₁g + m₁a
Sum of forces on B in the -y direction:
∑F = ma
m₂g − T₂ = m₂a
T₂ = m₂g − m₂a
Sum of torques on the pulley in the clockwise direction:
∑τ = Iα
T₂r − T₁r = (½ mr²) (a/r)
T₂ − T₁ = ½ ma
Substitute:
m₂g − m₂a − (m₁g + m₁a) = ½ ma
m₂g − m₂a − m₁g − m₁a = ½ ma
m₂g − m₁g = m₂a + m₁a + ½ ma
g (m₂ − m₁) = a (m₂ + m₁ + ½ m)
a = g (m₂ − m₁) / (m₂ + m₁ + ½ m)
a = (9.8 m/s²) (5.0 kg − 1.0 kg) / (5.0 kg + 1.0 kg + ½ (0.5 kg))
a = 6.272 m/s²
Given:
v₀ = 0 m/s
a = 6.272 m/s²
t = 0.5 s
Find: v
v = at + v₀
v = (6.272 m/s²) (0.5 s) + 0 m/s
v = 3.14 m/s
Therefore, mass A will rise at 3.14 m/s, and mass B will fall at 3.14 m/s.
If an object is 20 kg box is resting on a table, what is its weight
Answer:
20 kg = 20000 grams. What is 20 kilograms in pounds? 20 kg = 44.09245 pounds.Explanation:
:)
Answer:
W = mg
W = 20kg x 9.8m/s^2
W = 196 N
(Before I ask my question, it's not physics btw idk what it is it's just science)
Since kinetic energy depends on mass and speed, will a 300-pound baseball player hit the ball farther than a 100-pound baseball player? EXPLAIN
Assume the following conditions in this scenario:
1. The bat is identical in mass and weight for both players
2. both players swing the bat with the same velocity
3. The weather conditions are identical for both players (wind, climate etc..)
4. both players meet the ball squarly so as to hit the ball in the same place for the best outcome
It's definitely a Physics question !
Here's how I would look at it:
The player doesn't hit the ball. The bat does.
You said that the two bats are identical, and both players swing the bat with the same speed.
So at the point where the bat meets the ball, the conditions are the same both times.
The ball can't tell the difference.
Its history will unfold identically after both hits.
what property of light is suggested by the formation of shadows
Answer:
Please mark me as the brainliest
Explanation:
The way shadows are formed in such a way that the shape of the shadows resembles the object is because light travels in straight lines. This means that, a light ray wouldn't just jump up the obstacle and land on the other side and then you would see some funny light spots on the shadow
Which scale is being described? Water freezes at 32 . Water freezes at 0 . Water freezes at 273
Answer:
fa___gyyioo
Explanation:
Answer: The correct answers are
Fahrenheit
Celsius
Kelvin
Explanation:
What is the ocean floor made of?
Answer:
Oceanic crust is about 6 km (4 miles) thick. It is composed of several layers, not including the overlying sediment. The topmost layer, about 500 metres (1,650 feet) thick, includes lavas made of basalt (that is, rock material consisting largely of plagioclase [feldspar] and pyroxene).
Explanation:
it was on google hope this helps
A cotton garment cannot keep us warm in winter as a woolen sweater can. Give
reason.
Answer:
Cotton clothes are thin and do not have space in which air can be trapped. Thus, cotton clothes do not prevent heat coming out of our body. Woollen clothes keep us warm during winter because wool is a poor conductor of heat and it has air trapped in between the fibres.
Explanation:
Answer:
woolen clothes in winter because woolen clothes gives us warmth. ... We should wear light colored clothes in summer because light coloured clothes keeps us cool as they insulate the heat. And cotton clothes makes us comfortable in summers and cotton clothes absorb the sweat which we get mostly in summers
Explanation:
help me please, i need it fast
Answer:
2) C. (x - 3)² + (y + 2)² = 25
5) x² + y² - 8x - 16y + 54 = 0
6) x² + y² - 10x - 12y + 36 = 0
Explanation:
2)
center of circle = 3, -2
x1, y1
end point of circle = 7, 1
x2, y2
the equation of a circle is Pythagorean theorem
x² + y² = r² (where r is the radius of a circle)
distance between points
(x2 - x1)² + (y2 - y1)² = r²
(7 - 3)² + (1 - (-2))² = r²
r² = 25
therefore the equation to the circle is
(x - 3)² + (y + 2)² = 25
=========================================
5)
write the general form of a circle with the center (4,8)
and containing the point (-1, 7)
distance between points
(x2 - x1)² + (y2 - y1)² = r²
(-1 - 4)² + (7 - 8)² = r²
r² = 26
(x - 4)² + (y - 8)² = 26
(x - 4)(x - 4) + (y - 8)(y - 8) = 26
x² - 8x + 16 + y² - 16y + 64 -26 = 0
x² + y² - 8x - 16y + 54 = 0
=========================================
6)
find the general form of a circle with center (5,6)
and tangent to the y-axis.
center (5,6)
h, k
radius = r²
r = 5
(x - h)² + (y - k)² = r²
(x - r)² + (y - k)² = r²
(x - 5)(x - 5) + (y - 6)(y - 6) = r²
x² - 10x + 25 + y² - 12y + 36 = 25
x² + y² - 10x - 12y + 36 = 0
=========================================
2. True or false. Gravity is the strongest non-contact force on Earth.
A:True
B:False
Answer:
the answer is true true
I need to explain the motion of each intervals
Answer:
Periodic motion, in physics, motion repeated in equal intervals of time. Periodic motion is performed, for example, by a rocking chair, a bouncing ball, a vibrating tuning fork, a swing in motion, the Earth in its orbit around the Sun, and a water wave.
Explanation:
what is gravity?what is one solar day?
Answer:
Gravity :the force that attracts a body towards the centre of the earth, or towards any other physical body having mass.Solar dayA solar day is the time it takes for the Earth to rotate about its axis so that the Sun appears in the same position in the sky. orIt is the time between successive meridian transits of the sun at a particular place.The formula to calculate velocity is
speed = distance/time
Answer:
velocity= distance divided by time
A little boy pushes a wagon with his dog in it. The mass of the dog and wagon together is 48kg. The wagon accelerates at 0.8 m/s2. What force is the boy pulling with?
Answer:
Force Applied=Mass x Acceleration
Force Applied= 45kg x 0.85m/s^2
Force Applied= 38.250N
Explanation:
Which of the following is true about the speed of light?
It depends on the wavelength.
In a vacuum, it is a constant value that does not depend on the observer.
It is slowest in a vacuum unless an observer is moving towards the source.
In a vacuum, it varies depending on the color of the light.
Answer:
it is a constant value that does not depend on the observer
Explanation:
Answer: the answer is b
Explanation:
Can you charge an object by ripping two object apart? Pls answer quickly
Living organisms, such as people and other animals and our Earth's
surface, are made up of mostly water. True or false?
Answer:
i think it is True
how do butterfly dest on there wings
Brilliant***
Thank you
Mass of the Beaker = 12.023 g
Total Mass of the Beaker and the Ball = 23.050 g
To Find:The Mass of the Ball.
Solution:Total Mass of the Beaker and the Ball - Mass of the Beaker = Mass of the Ball
23.050 g - 12.023 g = 11.027 g
Answer:The Mass of the Ball is 11.027 g
Form hypothesis: How do you think objects will fall when there is no air?
Normally, just because there is no air we still have gravity.
Answer:
Hello!!! Princess Sakura here ^^
Explanation:
I think objects will fall at the same rate regardless of their mass.
_____ are tiny organisms that are made of a single cell
in which of the following conditions does the velocity of the car NOT change?
A lamp plugged into an electrical outlet is turned on. The lightbulb in the lamp glows and gets hot. What energy transformations are taking place?
Answer: thermal and elterical
Explanation:thermal and eltrical
Answer:
Electric energy from the outlet transforms to radiant energy and thermal energy in the lightbulb.
Explanation:
A bowling ball rolls off the edge of a flat roof at a velocity of 16 m/s. What is the actual speed of the ball one second later?
Answer:
The horizontal velocity is constant at 16 m/s.
After 1 sec since v = a t then 9.8 m/s^2 * 1 sec = 9.8 m/s for the vertical velocity
V = (Vx^2 + Vy^2)^1/2 = (16^2 + 9.8^2)^1/2 = 18.8 m/s
According to the kinetic theory, all matter is composed of _______.
Answer:
According to the kinetic theory, all matter is composed of _______.
Explanation:
The Kinetic Theory of Matter states that matter is composed of a large number of small particles, individual atoms or molecules, that are in constant motion. Matter is made up of particles that are constantly moving. All particles have energy, but the energy depending on the temperature of which matter is in.
According to the kinetic theory, all matter is composed of large number of identical small molecules.
What is kinetic theory of gases?
A lot of the fundamental ideas of thermodynamics were established with the help of the kinetic theory of gases, a straightforward yet historically significant classical model of the thermodynamic behavior of gases.
According to the model, a gas is made up of numerous identical submicroscopic particles (atoms or molecules) that are all moving rapidly and randomly.
It is considered that they are substantially smaller in size than the particle spacing on average. Random elastic collisions between the particles and with the container's walls occur between the particles. The simplest form of the model only takes into account the interactions within the ideal gas.
Learn more about kinetic theory here:
https://brainly.com/question/14349214
#SPJ6
A roller coaster pushes a 25 kg person upward with a force of 300 N. What is the acceleration?
Answer: a=F/m , a = 300N/25N , a= 12 m/s2
Explanation: Divide the 300 by 25 you get 12 . If your wondering how i got 25N in the eqaution it because you change 25kg to 25N. I hope this helps you
Acceleration of an object is the force divided by mass. The acceleration of the roller coaster to push the 25 kg person with a force of 300 N is 12 m/s².
What is acceleration ?Acceleration is a physical quantity measuring the rate of change in velocity. It is a vector quantity having both magnitude and acceleration. Acceleration has the unit of m/s².
According to Newton's second law of motion, the force acting on a body is the product of its mass and acceleration.
F = ma
Given that, mass of the person = 25 kg
force applied on the body = 300 N
acceleration = force/mass
a = 300 N/25 kg = 12 m/s²
Therefore, the acceleration of the roller coaster is 12 m/s².
Find more on acceleration:
https://brainly.com/question/3046924
#SPJ2
Two common systems of measurements are the ____ system and the ______ system.
Answer:
Metric systemImperial or British systemExplanation:
thank & follow & mark brainliestWhich of the following statements about developing a personal fitness program is NOT true?
A. When developing a personal fitness program, it is important to implement strategies that will help maintain the program as well as give it a successful start.
B. Personal factors such as age, health concerns, and likes are important to consider when developing a personal fitness program.
C. The starting skill level of the physical activities included in a personal fitness program should be determined from other individuals' fitness programs.
D. The FITT principle should be used when developing a personal fitness program.
gym
If there is a base runner on 1st base, then there is a(n) _________ at 2nd base
1.Automatic out
2.Force out
3.Tag up
4.Ground out
Answer:4
Explanation:
how do you find your spirit animal?
Answer:
Take a Buzzfeed quiz
Explanation:
I doubt finding your spirit animal is easy, so you must consult the infamous website known for random personality quizes, Buzzfeed.
I'm sure there will be many quizes focused on the exploration of spirit animals, and finding yours with accuracy is something Buzzfeed takes pride in, (despite the fact that this is a comercial buisness with the only intent of making money off of your personality quiz exploits) so your spirit animal should be found with ease.
If Buzzfeed turns out to be unsucsessful, I recomend just searching up your question online to find countless other resources dedicated to your spirit animal journey.
You could also consult your local witch to see if they know anything about spirit animals.
Answer:
i will tell you how to do it because i've done it before
Explanation:
So to find your spirit animal you don't choose it. It chooses you. To find yours it can be in your dreams, daydreams. Look into your concious. In your dreams look at the animals to see if there is anything unusal about them that is out of the ordinary. It will show itself to you in ways you might not realize. If you do see an animal out of the ordinary, inspect it, try asking it something, because if it shows itself to you that means it is willing to guide you. Thats what your spirit animal is for.
The same track star runs the 100 meter dash forward in only 10.1 seconds. What is
the track star's velocity?
You turn on a car's radio. What energy transformation is taking place?
A. Chemical to kinetic
B. Thermal to kinetic
C. Electrical to sound
D. Nuclear to sound
SUBMIT
Answer:
I think C like my friend upove
Explanation:
