Which of the following is the most likely consrquence of gang involvement
Answer:
????
Explanation:
was their supposed to be a picture?
A cyclist travels 100 kilometers in 4 hours. What is the cyclist speed?
Answer:
100x4=400 kilometers
Explanation:
: )
Answer:
100÷4=25
Explanation:
you would devide
Enter the appropriate word(s) to complete the statement. (Choose from the words between parentheses)
In a inelastic , elastic)-
collision, both momentum and kinetic energy are conserved
-
Answer:
The correct option is;
Elastic
Explanation:
In an elastic collision, the initial kinetic energy of the system is equal to the final kinetic energy of the system, such that there is no loss in the net kinetic energy available at a specific time or stage in the system
Therefore, we have;
1/2·m₁·v₁₁² + 1/2·m₂·v₂₁² = 1/2·m₂·v₁₂² + 1/2·m₂·v₂₂²
From which we get;
m₁·v₁₁ + m₂·v₂₁ = m₂·v₁₂ + m₂·v₂₂
Which is indicates that the initial and momentum of the system is also conserved
Therefore, in an elastic collision, both momentum and kinetic energy are conserved.
An insulated rigid tank with a volume of 0.57 m3, contains 4 kg of Argon gas at 450 kPa and 30 C. A valve is now opened, and the Argon is slowly allowed to escape until the pressure inside drops to 200 kPa. Assuming the Argon remaining inside the tank has undergone a reversible, adiabatic process, determine the final mass in the tank,
Answer:
The value is [tex]m_2 = 2.46 \ kg[/tex]
Explanation:
From the question we are told that
The volume of the tank is [tex]V = 0.57 \ m^3[/tex]
The mass of the Argon it contains is [tex]m = 4 \ kg[/tex]
The initial pressure on of the gas is [tex]P_1 = 450 kPa = 450 *10^{3} \ Pa[/tex]
The initial temperature is [tex]T_1 = 30^oC = 30 + 273 = 303 \ K[/tex]
The new pressure inside the tank is [tex]P_2 = 200 \ kPa = 200 *10^{3} \ Pa[/tex]
Gnerally given that the Argon remaining inside the tank has undergone a reversible, adiabatic process, then the final temperature of the Argon gas is mathematically represented as
[tex]T_2 = T_1 * [\frac{P_2}{P_1} ]^{ \frac{(k - 1 )}{k} }[/tex]
Here k is the specific heat ratio of Argon with value [tex]k = 1.667[/tex]
So
[tex]T_2 = 303 * [\frac{200}{450} ]^{ \frac{(1.667- 1 )}{1.667} }[/tex]
=> [tex]T_2 = 219 \ K[/tex]
Generally from the ideal gas equation
[tex]PV = mRT_2[/tex]
So
[tex]\frac{P_1V}{P_2V} =\frac{ m_1 * R * T_1 }{ m_2 * R * T_2}[/tex]
Here R is the gas constant with value [tex]R = 8.314 \J \ K^{-1}\ mol^{-1}[/tex]
=> [tex]m_2 = \frac{P_2 * T_1 }{ P_1 * T_2 } * m_1[/tex]
=> [tex]m_2 = \frac{200 * 303 }{ 450 * 219 } * 4[/tex]
=> [tex]m_2 = 2.46 \ kg[/tex]
Which of the following is true about sound waves?
1:they move faster than light
2:they make wind
3:the vibrate the air
4: they move slower in water than air
Answer:
They transmit by vibration through mediums such as air. So #3 is most logical answer.
Explanation:
It is in fact vibration of air (sound waves) which is transformed by the tympanic membrane in the ear of human to audible sounds.
++++++++++++++++++++++++++++++++++++++++++++++
Sound travels slower than light
Move faster in water than air.
Wind blowing through leaves and other objects creates sounds.
Answer:
(Question) Which type of wave needs a medium to travel?
(Answer) sound waves, because they travel by oscillating molecules
(Question) What do both sound and light waves transfer?
(Answer) energy
(Question) How does an increase in amplitude affect sound and light waves?
(Answer) louder sound and brighter light
(Question) What happens to the wavelength when the frequency increases?
(Answer) The wavelength decreases.
(Question) Which of the following is true about sound waves?
(Answer) Sound moves faster in the ocean than in the air.
Explanation:
i just did the quick check
a stone is tied to one end of string. holding to the other end , the string is whirled in the horizontal plane with progressively increasng speed it breaks at some speed bexause
Answer:
Breaks because it doesn't have force in the radial direction and thus due to inertia the stones will fly off tangentially.
Explanation:
Until the stone is tied to a string, it will possess centripetal force and centrifugal force along the radial direction of motion due to the tension present in the string. Now, when the rope breaks, it breaks because it doesn't have force in the radial direction and thus due to inertia the stones will fly off tangentially.
Psychology:
Retrograde amnesia is the memory loss of events that occurred after the onset of amnesia.
True or False
It’s false.
Answer:
thank you
Explanation:
Answer:
False is correct
Explanation:
Peace and Love
PLZ HELP IM REALLY CONFUSED a boy is playing catch with his friend. He throws the ball straight up. When it leaves his hand, the ball (2kg) is traveling 10m/s. Whats the ball's kinetic energy just as it leaves the boy's hand? What is the potential energy of the ball when it reaches the highest point
Answer:
K.E = 100 J
Final P.E = 100 J
Explanation:
The kinetic energy of any object can be given by the following formula:
[tex]K.E = (\frac{1}{2})mv^{2}[/tex]
where,
K.E = Kinetic Energy
m = mass of ball = 2 kg
v = speed of ball
Initially, v = 10 m/s. Therefore, the initial K.E is given as:
[tex]K.E = (\frac{1}{2})(2\ kg)(10\ m/s)^{2}[/tex]
K.E = 100 J
Now, at the highest point the K.E of the ball becomes zero. because the ball stops for a moment at the highest point and its velocity becomes zero. So, from Law of Conservation of energy:
Initial K.E + Initial P.E = Final K.E + Final P.E
Initial P.E is also zero due to zero height initially.
K.E + 0 = 0 + Final P.E
Final P.E = 100 J
Dos cargas q1= 5 Milicoulombios y q2 = 6 Milicoulombios, se encuentran separadas 4 cm y sufren una fuerza entre ellas. ¿Cuál será el valor de la fuerza entre ambas cargas? ¿Existirá una fuerza de atracción o de repulsión? ¿Por qué?
Answer:
El valor de la fuerza entre ambas cargas es 168,750,000 N.
Ambas cargas son positivas, por lo que entre ellas existirá una fuerza de repulsión.
Explanation:
Los responsables de todos los fenómenos eléctricos son los electrones, porque pueden escapar de la órbita del átomo y son mucho más ligeros que las otras partículas.
La carga eléctrica es una propiedad física propia de algunas partículas subatómicas que se manifiesta mediante fuerzas de atracción y repulsión entre ellas. La materia cargada eléctricamente es influida por los campos electromagnéticos, siendo a su vez, generadora de ellos.
Entre dos o más cargas aparece una fuerza denominada fuerza eléctrica cuyo módulo depende del valor de las cargas y de la distancia que las separa, mientras que su signo depende del signo de cada carga.
La fuerza entre dos cargas se calcula como:
[tex]F=k*\frac{Q*q}{d^{2} }[/tex]
donde:
F es la fuerza eléctrica de atracción o repulsión y se mide en Newtons (N). Q y q son lo valores de las dos cargas puntuales y se miden en Culombios (C). d es el valor de la distancia que las separa y se mide en metros (m)k es una constante de proporcionalidad llamada constante de la ley de Coulomb. Depende del medio en el que se encuentren las cargas. Para el vacío k es aproximadamente 9·10⁹ N·m²/C² utilizando unidades en el S.I.Siendo 1 millicoulomb [mC] = 0,001 coulomb [C] y 100 cm= 1 m, en este caso sabes:
Q= 5 mC= 0.005 Cq= 6 mC= 0.006 Cd= 4 cm= 0.04 mReemplazando:
[tex]F=9*10^{9}\frac{N*m^{2} }{C^{2} } *\frac{0.005C*0.006C}{(0.04m)^{2} }[/tex]
F= 168,750,000 N
El valor de la fuerza entre ambas cargas es 168,750,000 N.
Las cargas del mismo signo se repelen, mientras que las cargas con diferente signo se atraen. En este caso ambas cargas son positivas, por lo que entre ellas existirá una fuerza de repulsión.
A meter stick of uniform density is pivoted at the 75 cm mark and a 250 g mass is placed at the 90.0 cm mark. If it balances the meter stick, what is the mass of the meter stick
Answer:
The mass of the meter stick is 50 g.
Explanation:
make a sketch of the problem statement;
0-------------------------------------------------75cm------90cm-----100cm
↓ Δ ↓
W 250 g
where;
W is the mass of the meter stick
Apply the principle of moment; take moment about the pivot.
sum of the anticlockwise moment = sum of the clockwise moment
W(75 - 0) = 250(90 - 75)
W(75) = 250(15)
W(75) = 3750
W = 3750 / 75
W = 50 g
Therefore, the mass of the meter rule is 50 g.
a fire woman dropped a person onto the safety net. right before the person hit the net he had a velocity of 11.2m/s and 1800j of kinetic energy
Answer: 28.699
Explanation:
KE=1/2(mv²)
1800=1/2m (125.44)
14.349=2m
m=28.699
Answer:
28.699
Explanation:
A graph showing the kinetic energy of a 10 kg object at different
speeds is provided:
Answer:
20 Joules
Explanation:
by seeing the Graph, we know that the graph will be curved. Then we can assume that the KE at speed 2 m/s is 20 Joules. But lets count it:
KE = ½ x m x v²
KE = ½ x 10 x 2²
KE = 5 x 4 = 20 Joules
what is meant by lenght
Answer:
the size of something from one end to the other; how long something is
Dont decorate a tree in front of a cat lol we finished decorating the tree last night and the cat climbed up the tree and knocked it over XD
10 cm^3 of iron have a smaller
mass then 115 cm^3 of wood.
(density of iron 7.9 g/cm^3)
(density of wood 0.7 g/cm^3)
true or false
Explanation:
Mass of iron = (7.9)(10) = 79g
Mass of wood = (115)(0.7) = 80.5g
Therefore iron has a smaller mass than the wood, which is true.
If a current of 2.5 Ampere flow through a circuit in 15 minutes calculate amount of charge through a crcuit
Answer:
Q = 2250 Coulombs
Explanation:
We are given;
Current: I = 2.5 A
Time: t = 15 minutes = 15 × 60 seconds = 900 s
Now formula for the amount of charge through the circuit is given by:
Q = It
Thus;
Q = 2.5 × 900
Q = 2250 Coulombs
what is the correct answer?
Answer:
in my calculation the answer is letter a but in goo gle the answer is letter c
which one will you trust?
Explanation:
dont report me or i will report you
Joey throws a football 30 meters with a force of 10 N. How much work
does Joey do?
Answer:
300 Joules
Explanation:
Just use the Work formula:
W = F . D
W = 10 . 30
W = 300 Joules
The Hawaiian islands formed when molten material erupted from the ocean floor. As the lava flowed out, cooled, and hardened, massive rocks formed. These rocks have a very fine texture and tiny crystals that cannot be seen with the naked eye. These massive rocks formed into the islands that are present today.
What type of igneous rock are the Hawaiian islands?
Answer:
Explanation:
The most common type of igneous rock making up the Hawaiian island chain is Mafic rock. Furthermore, the most common type of Mafic rock is basalt.
Answer:
Extrusive
Which of the following is true about the plants in the picture below?*
5 points
Tall is represented by (T) and short is represented by (t).
TT
Tt
They have the same phenotypes
They have the same genotypes.
They have the same alleles.
They are both short
Explanation:
We know that for the plant;
Tall is represented by T
Short is represented t
Phenotypically, TT and Tt have the same expression.
The phenotype of an organism denotes the observable feature it possesses. Although determined by the genetic composition but the environment plays a very important role in its expression.
The genotype is the genetic make up of an organism. TT and Tt denotes the genes that occupy positions in the nucleus of the cell.
Both TT and Tt shows that the organism is tall. t is short and recessive.
HELP ASAPP!!!! WILL GIVE BRAINLIEST!
Describe the chemical structure of a cell membrane
Answer:
The plasma membrane is composed of a bilayer of phospholipids, with their hydrophobic, fatty acid tails in contact with each other. ... Carbohydrates are attached to some of the proteins and lipids on the outward-facing surface of the membrane. These form complexes that function to identify the cell to other cells.
Explanation:
Hope it answered you plz mark as Brainlist
. A motorist is speeding along at 33m/s when he sees a squirrel on the road 200 meters in
front of him. He tries to stop, but it takes 12 seconds for his car to stop
(a) What is the acceleration of the car? (assume acceleration was constant)
(b) Does the squirrel survive?
(c) How fast was the car moving at 100 meters?
Hello!
a)
Use the kinematic equation to solve for the acceleration:
[tex]v_{f} = v_{i} + at[/tex]
In this instance, the final velocity is 0 because he comes to a stop. We can solve for the acceleration by plugging in the given values:
0 = 33 + (12)a
0 = 33 + 12a
-33 = 12a
-33 / 12 = a --> a = -2.75 m/s²
b) Find the amount of distance necessary to stop. Use the formula:
[tex]v_{f} ^{2} = v_{i} ^{2} + 2ad[/tex]
Plug in the values:
0² = 33² + 2(-2.75 · d)
0 = 1089 - 5.5d
-1089 = -5.5d
d = 198 meters. Therefore, the squirrel would survive.
c)
Find the velocity at 100 meters by using the same formula as before:
[tex]v_{f} ^{2} = v_{i} ^{2} + 2ad[/tex]
However, in this instance, we are solving for the final velocity. Plug in the given points to solve:
vf² = 33² + 2(-2.75 · 100)
vf² = 1089 + (-550)
vf² = 539
vf = √539
vf ≈ 23.22 m/s.
What is string theory? Need answer in own word
Answer:
When point particals are replaced by string like particals
Explanation:
A 0.2 kg baseball is pitched with a velocity of 40 m/s and is then batted to the pitcher with a velocity of 60 m/s. What is the magnitude of change in the ball's momentum?
Answer:
The magnitude of change in the ball's momentum is 4 kgm/s
Explanation:
Given;
mass of the ball, m = 0.2 kg
initial velocity of the ball, u = 40 m/s
final velocity experienced by the ball, v = 60 m/s
Therefore, the change in momentum of the ball is given as final momentum minus initial mometum;
ΔP = mv - mu
ΔP = m(v-u)
ΔP = 0.2 (60 - 40)
ΔP = 4 kgm/s
Therefore, the magnitude of change in the ball's momentum is 4 kgm/s
The magnitude of the change in the momentum of the baseball is 4 kgm/s.
To solve the problem above we need to use the formula of change in momentum
Change in momentum: This can be defined as the product of the mass and the change in velocity of a body.
The formula of change in momentum is
M = m(v-u).................. Equation 1
Where M = change in momentum, m = mass of the baseball, v = final velocity of the baseball, u = initial velocity of the baseball.
From the question
Given:
m = 0.2 kg v = 60 m/s u = 40 m/sSubstitute these values into equation 1
M = 0.2(60-40) M = 0.2(20) M = 4 kgm/sHence, The magnitude of the change in the momentum of the baseball is 4 kgm/s
Learn more about change in momentum here: https://brainly.com/question/11789105
You walk exactly 250 steps North, turn around, and then walk exactly 400 steps South. How far are you from your starting
point?
steps to the
North, South, East or West)
Answer:
150 steps south
Explanation:
250 north 250 back to start then continue south for remainder of 400 steps. 150 south
PLEASE HELP ME this is due in 20 mins!!!!!
See how a block and tackle system can increase your mechanical advantage. You will need two broomsticks, a rope, and two helpers.
A. Give each helper a broom stick and have them stand facing each other holding the broomstick firmly in both hands in a horizontal position. The broomsticks should be at the same level, about two feet apart.
B. Tie one end of the rope to one of the broomsticks. (You may need to have one of your helpers hold the knot firmly in one hand as he or she holds the broomstick to help anchor it.)
C. Wrap the rope around the other broomstick, as in a simple pulley system, and pull on the free end of the rope. Your helpers should resist your pulling. What happens? Can you pull the broomsticks together?
D. Now weave the rope back over the first broomstick, so you have a double pulley. Pull on the free end. What happens now? Can you pull the broomsticks together? What is your mechanical advantage?
E. Try weaving the rope over the broomsticks one or two more times. Describe what happens, and state the mechanical advantage of each situation.
F. Write a summary of what happened and an explanation using the terms:
force
distance
work
mechanical advantage
If a Ferrari, with an initial velocity of 10 m/s, accelerates at a rate of 5 m/s2 for 3 seconds, what will its final velocity be?
Answer:
25 m/s
Explanation:
Formula of acceleration is:
[tex]a=\frac{v-u}{t} \\[/tex]
where,
v is the final velocity
u is the initial velocity
a is the acceleration and
t is the time
so plugging in the values we get,
[tex]a=\frac{v-u}{t} \\\\5=\frac{v-10}{3} \\\\15=v-10\\15+10=v\\v=25\ m/s\\[/tex]
A block has a length of 1.0 cm, a width of 3.1 cm, and a height of 2.5 cm. What is the block's volume to the nearest tenth?
Answer:
8
Explanation:
1.0 × 3.1 × 2.5 = 7.75 cm^3
nearest tenth 8cm^3
What is the mass of 2.5 moles of carbon?
A-1.5 x 1024 g C
B-30 g C
C-2.5 g C
D-0.21 g C
Answer:
I think no B
if wrong correct me plsssssss
Mark me brainliest
have a nice day
I will always help you understanding your assingments
#Captainpower:)
a parachutist decided to jump of a plane calculate how far does he travels in 2 seconds knowing that he started at rest and accelerates downward at 10ms
Answer:
20 meters
Explanation:
Given the following parameters
Time t = 2 seconds
Acceleration a = 10m/s²
Required
Distance covered S
Since the body started from rest, u = 0m/s
Using the equation of motion S = ut + 1/2 at²
Substitute
S = 0 + 1/2(10)(2)²
S = 5 * 2²
S = 5 * 4
S - 20m
Hence he travels 20 meters
