The difference between transverse and longitudinal waves is direction of wave motion in relative to direction of the particle motion.
Transverse vs Longitudinal Waves: What's the Difference?The particle motion in a transverse wave is only perpendicular to the wave motion but in longitudinal wave, the particle motion is parallel to the wave motion.
An example of transverse wave is a wave on a guitar string which when plucked, it vibrates back and forth in a direction perpendicular to the direction of the wave traveling along the string.
An example of a longitudinal wave is sound waves which are created when a source like speaker or a musical instrument vibrates back and forth in the same direction as the wave is traveling through the air.
Read more about Waves
brainly.com/question/25699025
#SPJ1
which of the following statements is not correct A. matter is made up of molecules B. the molecules of matter are in constant motion C. Brownian motion is an evidence of particulate nature of matter D. molecules of a liquid are stationary E. atoms combine to form molecules
Answer:
The Correct answer is D
molecules of liquid are stationary
The pressure of a gas at the triple point of water is 1.50 atm. If its volume remains unchanged, what will its pressure be at the temperature at which CO2 solidifies?
The pressure of a gas at the triple point of water is 1.50 atm, which means it is at the temperature and pressure where water can exist as a solid, liquid, and gas simultaneously.
To find the pressure of the gas at the temperature at which CO2 solidifies, we need to know the triple point of CO2. The triple point of CO2 is -56.6°C and 5.1 atm.
If the volume of the gas remains unchanged, then its pressure will change with a change in temperature. Using the ideal gas law, PV = nRT, we can find the new pressure of the gas:
P1V1 = P2V2
At the triple point of water:
P1 = 1.50 atm
V1 = V (unchanged)
T1 = 0.01°C (triple point of water)
At the triple point of CO2:
P2 = 5.1 atm
V2 = V1 (unchanged)
T2 = -56.6°C
Using the ideal gas law and solving for P2:
P2 = P1(T2/T1)
P2 = 1.5 x (-56.6+273.15) / (0.01+273.15)
P2 = 0.818 atm
Therefore, the pressure of the gas at the temperature at which CO2 solidifies is 0.818 atm.
Using your own words, describe the transformation of energy from one form to another. Include an
example in your explanation.
The transformation of energy from one form to another is the process where energy is converted from one form to another while the total amount of energy remains constant. This means that energy cannot be created or destroyed; it can only be transformed from one form to another.
One example of energy transformation is a light bulb. When a light bulb is switched on, electrical energy is transformed into light energy and heat energy. The electrical energy is transformed into light energy by the light bulb's filament, which heats up and emits light. At the same time, some of the electrical energy is transformed into heat energy, which is dissipated into the surrounding air. The total amount of energy is conserved, but it is transformed from electrical energy to light energy and heat energy.
Another example of energy transformation is a roller coaster ride. When a roller coaster is released from its starting point, its potential energy is transformed into kinetic energy as it moves downhill. As the roller coaster moves uphill, its kinetic energy is transformed back into potential energy. At the bottom of the hill, the kinetic energy is at its maximum, and the potential energy is at its minimum. At the top of the hill, the potential energy is at its maximum, and the kinetic energy is at its minimum. Again, the total amount of energy is conserved, but it is transformed from potential energy to kinetic energy and back again.
An electron moving with a speed of 4.2 * 10^5 m/s in the
positive x direction experiences zero magnetic force. When it
moves in the positive y direction, it experiences a force of 2.0 * 10^-13 N
that points in the negative z direction. What are
the direction and magnitude of the magnetic field?
Answer: The magnetic field has a magnitude of approximately 1.96 * 10^-4 T and points in the positive x direction. The magnetic field vector is B = (1.96 * 10^-4, 0, 0) T.
Explanation:
To find the direction and magnitude of the magnetic field, we'll use the formula for the magnetic force acting on a moving charged particle:
F = q * (v x B)
where F is the magnetic force, q is the charge of the particle, v is its velocity, and B is the magnetic field. The cross product (v x B) implies that the force is perpendicular to both the velocity of the particle and the magnetic field.
Since the electron experiences zero magnetic force when it moves in the positive x direction, we can conclude that the magnetic field is either parallel or antiparallel to the x-axis.
Now let's analyze the situation when the electron moves in the positive y direction and experiences a force in the negative z direction. The electron charge is negative, with q = -1.6 * 10^-19 C. The velocity vector is v = (0, 4.2 * 10^5, 0) m/s, and the force vector is F = (0, 0, -2.0 * 10^-13) N.
Using the formula for magnetic force, we have:
F = q * (v x B)
Now, we need to find the cross product (v x B):
v x B = (0, 4.2 * 10^5, 0) x (Bx, 0, 0)
Since the cross product is orthogonal to both vectors, and we know that the force is in the negative z direction, we can conclude that the magnetic field must be in the positive x direction (parallel to the x-axis). So, the magnetic field vector is B = (Bx, 0, 0).
Now we can rewrite the force equation:
(0, 0, -2.0 * 10^-13) = -1.6 * 10^-19 * (0, 0, 4.2 * 10^5 * Bx)
To solve for Bx, we can focus on the z component of the force equation:
-2.0 * 10^-13 = -1.6 * 10^-19 * (4.2 * 10^5 * Bx)
Dividing both sides by (-1.6 * 10^-19 * 4.2 * 10^5):
Bx = (2.0 * 10^-13) / (-1.6 * 10^-19 * 4.2 * 10^5)
Bx ≈ 1.96 * 10^-4 T
Thus, the magnetic field has a magnitude of approximately 1.96 * 10^-4 T and points in the positive x direction. The magnetic field vector is B = (1.96 * 10^-4, 0, 0) T.
How will the magnet being farther away from the coil of wire affect the strength of an electromagnet?
Answer:
intensity of this field around the conductor is proportional to the distance from it with the strongest point being next to the conductor and progressively getting weaker further away from the conductor
Questions already answered. I need to know how we get to this answer.
Question:
A stone was thrown from a bridge 31 meters above a river. The stone lands 73 meters away from the bridge. What are the initial velocities in the horizontal (V₀ₓ) and vertical (V₀y) directions?
Answers:
V₀ₓ = 29 m/s
V₀y = 0 m/s
The initial horizontal velocity of the stone is 29 m/s.
The initial vertical velocity of the stone is 0 m/s.
What is the time of motion of the stone?The time of motion of the stone is calculated as follows;
h = V₀yt + ¹/₂gt²
where;
V₀y is the initial vertical velocityt is the time of motiong is gravitySince the stone is projected horizontally, the initial vertical velocity = 0
h = ¹/₂gt²
t = √(2h/g)
t = √(2 x 31/9.8)
t = 2.52 s
The initial horizontal velocity of the stone is calculated as follows;
d = V₀ₓt
V₀ₓ = d/t
V₀ₓ = 73 m / 2.52 s
V₀ₓ = 29 m/s
Learn more about horizontal velocity here: https://brainly.com/question/24949996
#SPJ1
Which of the forces shown in part (a) produces a torque on the snowball as it rolls about its center? Justify your selection.
The force produces a torque on an object, need to look for a force that is applied in a direction that is not parallel to the axis of rotation, has a nonzero magnitude, and is applied at a distance from the axis of rotation.
Torque is a measure of a force's ability to rotate an object around an axis or pivot point. It is the product of the force and the perpendicular distance from the force's line of action to the axis of rotation. In other words, torque depends on both the magnitude and direction of the force and the lever arm, which is the distance between the axis of rotation and the point where the force is applied.
To identify the force that produces torque on an object, you need to consider the following factors:
Direction: The force must be applied in a direction that is not parallel to the axis of rotation. If the force is applied along the axis of rotation, it will not produce any torque.
Magnitude: The force must have a nonzero magnitude. A force that is too weak will not produce enough torque to rotate the object.
Lever arm: The force must be applied at a distance from the axis of rotation. The greater the distance, the greater the torque.
Once you have identified the force that meets these criteria, you can calculate the torque it produces using the formula:
Torque = Force x Lever arm x sin(θ)
where theta is the angle between the force vector and the lever arm vector.
To know more about torque
https://brainly.com/question/31846606
#SPJ1
Which of the following is true about sound waves?
A. Sound would move faster in a pool of water than in a pool of Jello.
B. Sound would move faster in a pool of rubber than in a pool of diamonds.
C. Sound moves faster in the ocean than in the air.
D. Sound moves faster in a lake than in the ocean.
The statement true about sound waves is " Sound moves faster in the ocean than in the air." The correct option is C.
Sound waves travel much faster in water (such as the ocean) compared to air. The speed of sound in air is around 343 meters per second at room temperature, while in water, it is about 1,500 meters per second. The denser medium of water allows sound waves to propagate more quickly.
A. Sound would move faster in a pool of water than in a pool of Jello: This statement is not true. Sound actually moves faster in water compared to Jello. The speed of sound depends on the medium it travels through, and in general, sound travels faster in denser materials. Water is denser than Jello, so sound waves would move faster in water.
B. Sound would move faster in a pool of rubber than in a pool of diamonds: This statement is not true. Sound waves do not travel faster in rubber compared to diamonds. In fact, the speed of sound in a material depends on its elasticity and density. Diamonds are much denser and have a higher elasticity compared to rubber, so sound waves would move faster in diamonds than in rubber.
D. Sound moves faster in a lake than in the ocean: This statement is not true. Sound waves do not travel faster in a lake compared to the ocean. The speed of sound in water depends on several factors, including temperature, salinity, and pressure. In general, the speed of sound is higher in the ocean compared to lakes due to the higher salinity and pressure in the ocean.
Therefore, C. Sound moves faster in the ocean than in the air: This statement is true.
To learn more about Sound Waves click:
https://brainly.com/question/29775325
#SPJ1
a moving coil galvanometer has a full-scale deflection of 3A to 30° deflection then what is the sensitivity of the instrument
The sensitivity of the moving coil galvanometer is 0.1 A/°. This means that for every 1° of deflection, the galvanometer requires a current of 0.1 A.
A galvanometer is an instrument used to detect and measure small amounts of electrical current. It works on the principle of electromagnetic induction and consists of a coil of wire that can rotate in a magnetic field. When an electric current flows through the coil, it experiences a torque that causes it to rotate.
The sensitivity of a moving coil galvanometer is defined as the current required to produce a full-scale deflection (FSD) of the pointer. In this case, the FSD of the galvanometer is 3A, and it corresponds to a deflection of 30°. Therefore, the sensitivity of the instrument can be calculated as follows:
Sensitivity = FSD/Deflection Angle
Sensitivity = 3A/30°
Sensitivity = 0.1 A/°
Hence, The moving coil galvanometer has a 0.1 A/° sensitivity. This means that the galvanometer needs a current of 0.1 A for every 1° of deflection.
To learn more about the difference between a simple galvanometer, and an electric motor click:
https://brainly.com/question/30115569
#SPJ1
List the 6 questions you may apply to formulating a logical, reasonable perspective to any situation.
Steps to formulate a logical, reasonable perspective to any situation are: gather information, identify problem, analyze the situation, consider assumptions, generate solutions, evaluate options, consider your values, make decision and monitor and adjust
What are the 6 questions that may be applied to formulate logical, reasonable perspective to any situation?Here are the six questions that you can apply to formulating a logical, reasonable perspective to any situation:
What are the issues that should be addressed?
What are the relevant facts and data related to this problem or issue?
What assumptions am I making about the problem or issue?
What are the possible solutions or outcomes, and what are the pros and cons of each?
What are my values and priorities related to this problem or issue?
What additional information do I need to make an informed decision or come to a reasonable conclusion?
To know more about perspective, refer
https://brainly.com/question/13107415
#SPJ1
3 An ice cube of mass 0.008 kg at 0°C was placed in water at 15°C
in an insulated plastic beaker. The mass of water in the beaker was
0.120 kg. After the ice cube had melted, the water was stirred, and
its temperature was found to have fallen to 9°C. The specific heat
capacity of water is 4200 J/kg °C.
a Calculate the energy transferred from the water.
b Show that when the melted ice warmed from 0°C to 9°C,
it gained 300 J of energy.
c Use this data to calculate the specific latent heat of
fusion of water.
[2 marks]
[2 marks]
[3 marks]
An ice cube of mass 0.008 kg at 0°C was placed in water at 15°C in an insulated plastic beaker. The mass of water in the beaker was 0.120 kg. After the ice cube had melted, the water was stirred, and its temperature was found to have fallen to 9°C. The specific heat capacity of water is 4200 J/kg °C.
a) The energy transferred from the water can be calculated using the equation
Q = m_water * c_water * ΔT
Where Q is the energy transferred, m_water is the mass of water, c_water is the specific heat capacity of water, and ΔT is the change in temperature of the water.
First, we need to find the initial temperature difference between the water and the ice
ΔT_1 = 15°C - 0°C = 15°C
Next, we can use the heat lost by the water to melt the ice
Q_1 = m_ice * L_fusion
Where Q_1 is the energy transferred during melting, m_ice is the mass of the ice, and L_fusion is the specific latent heat of fusion of water.
Finally, we need to find the energy transferred from the water to cool down from 15°C to 9°C
ΔT_2 = 15°C - 9°C = 6°C
Q_2 = m_water * c_water * ΔT_2
Now, we can find the total energy transferred from the water
Q = Q_1 + Q_2
Q = m_ice * L_fusion + m_water * c_water * ΔT_2
Q = 0.008 kg * L_fusion + 0.120 kg * 4200 J/kg°C * 6°C
Q = L_fusion + 3024 J
b) The energy gained by the melted ice can be calculated using the equation
Q = m_ice * c_water * ΔT
Where Q is the energy gained, m_ice is the mass of the melted ice, c_water is the specific heat capacity of water, and ΔT is the change in temperature of the melted ice.
The mass of the melted ice is equal to the mass of the original ice cube
m_melted_ice = m_ice = 0.008 kg
The change in temperature of the melted ice is
ΔT = 9°C - 0°C = 9°C
Now, we can find the energy gained by the melted ice
Q = m_melted_ice * c_water * ΔT
Q = 0.008 kg * 4200 J/kg°C * 9°C
Q = 302.4 J
Therefore, the melted ice gained 302.4 J of energy.
c) We can use the equation from part (a) to solve for the specific latent heat of fusion of water
L_fusion = Q - m_water * c_water * ΔT_2
L_fusion = 3024 J - 0.120 kg * 4200 J/kg°C * 6°C
L_fusion = 3024 J - 3024 J
L_fusion = 0 J/kg
Hence, the specific latent heat of fusion of water is known to be approximately 334 kJ/kg.
To know more about specific heat capacity here
https://brainly.com/question/29766819
#SPJ1
1. The 60 N force is applied to a 10 kg wooden block at an angle of 30° to the horizontal. The coefficient of kinetic friction between the block and the surface is 0,35. The block moves 5 m along a rough horizontal surface. f=15 N.. 10 11.0.35 5m 1.1 Calculate the work done on the block by the 60 N force. 1.2 Calculate the net work done on the block. (6
The work done is 259.8 J
The net work done is 140.625 J
How to solve for work doneFx = F * cos(θ)
Fx = 60 N * cos(30°)
Fx ≈ 51.96 N
Fy = F * sin(θ)
Fy = 60 N * sin(30°)
Fy = 30 N
W = Fx * d
where d is the distance (5 m) the block moves.
work done = 51.96 N * 5 m
work done ≈ 259.8 J
The net work doneForce norm = 10 kg * 9.81 m/s² - 30 N
Force norm ≈ 68.1 N
Force friction = 0.35 * 68.1 N
Force friction ≈ 23.835 N
Workdone friction = 23.835 N * 5 m
Workdone friction ≈ 119.175 J
Workdone net = W_Force - W_friction
Workdone net = 259.8 J - 119.175 J
Workdone net ≈ 140.625 J
Read more on work done here:https://brainly.com/question/8119756
#SPJ1
A
Once you’re satisfied with your model, record your model values in the table below.
Surfaces Expression
parameter: m
parameter: mk
initial value: t
initial value: x
initial value: vx
force function: f
What’s the expression
The expression is: m*x''(t) + mk*x'(t) + f(t) = 0.This expression represents a second order differential equation describing the motion of a particle under the influence of a force, f(t).
What is motion ?Motion is the action or process of moving or being moved from one place to another. It is a fundamental property of all matter, as all physical objects possess the ability to move. Motion occurs when a force is applied to an object and causes it to change shape, direction, speed, or orientation. Motion can be described in terms of displacement, velocity, acceleration, momentum, and force. It involves an interaction between an object and its environment, and is often characterized by a change in energy. Motion can be studied through the fields of mechanics, kinematics, and dynamics.
To learn more about motion
https://brainly.com/question/28205978
#SPJ1
In the Roman soldier model for refraction, what happens to the first soldier who hits the muddy stream?
A. They slow down and keep going straight
B. They slow down and turn slightly
C. They speed up and keep going straight
D. They speed up and turn slightly
In the Roman soldier model for refraction, the first soldier who hits the muddy stream would slow down and turn slightly. Option B is correct.
The Roman soldier model is a simplified model used to explain the behavior of light when it passes from one medium to another. In this model, a group of Roman soldiers is marching across a field towards a muddy stream. The soldiers represent light rays, and the muddy stream represents the boundary between two media with different refractive indices.
When the first soldier hits the muddy stream, they slow down because the speed of light decreases when it passes from a medium with a lower refractive index to a medium with a higher refractive index. Additionally, the soldier turns slightly because the direction of the light ray changes as it passes through the boundary between the two media. This change in direction is called refraction, and it occurs because the speed of light changes when it passes through a medium with a different refractive index.
The amount of refraction that occurs depends on the angle at which the light ray hits the boundary between the two media and the difference in refractive indices between the two media. The Roman soldier model is a useful tool for understanding the basics of refraction, but it has limitations and cannot fully explain all aspects of the phenomenon. Option B is correct.
To know more about the Refraction, here
https://brainly.com/question/16362069
#SPJ1
Use: 10 m/s, sin 37-0.6, cos 37°-0.8 A horizontal Force F-6 N is acting on a block of mass M=2.0 kg, pulling it up on a frictionless Inclined surface at an angle = 37° from the horizontal. What is the normal force acting on the block?
The normal force acting on the block is approximately 16.0 N.
According to the question, the inclined surface is frictionless, therefore the force of gravity is the only force acting on the block and the force applied by the horizontal force F.
The force of gravity acting on the block is given by:
F(gravity) = m * g
where m is the mass of the block, and g is the acceleration due to gravity (9.8 m/[tex]s^{2}[/tex] ).
So, F(gravity) = 2.0 kg * 9.8 m/[tex]s^{2}[/tex]
= 19.6 N
The force F is acting at an angle of 37° from the horizontal. By resolving the force into its components along the x and y axes, the normal force can be calculated
The component of the force F along the y-axis is equal to:
F(y axis)= F * sin(37°)
= 6 N * sin(37°)
≈ 3.6 N
Since the surface is frictionless, the block is not moving in the vertical direction, and so the net force acting on it in the y-direction must be zero.
Therefore, the normal force acting on the block is equal in magnitude to the force of gravity, and is given by:
F(normal) = F(gravity) - F(y axis)
F(normal) = 19.6 N - 3.6 N
≈ 16.0 N
To know more about the normal force refer to:
brainly.com/question/30697480
#SPJ1
what is hookie's law of elasticity
Aperson stands on the edge of a straight 20m-high cliff and holds a ball over the edge. The person
tosses the ball directly upward with an initial speed of 5ms. How long will it take the ball to hit the
ground at the base of the cliff, 20m below? (Take =10m
−2
for gravitational acceleration)
Answer:
Time to get to top = 5 m/s / 10 m/s^2 = .5 sec
H at top = v0 t - 1/2 g t^2 = 5 * .5 - 1/2 * 10 * .5^2 = 1.25 m
Time to fall 1.25 + 20 = 21.25 m
S = 1/2 g t^2 since it starts out ar zero speed
t = (2 * 21.25 / 10)^1/2 = 2.06 sec
Total time = .5 + 2.06 = 2.56 sec
Calculations using equations of motion reveal that the total time for the ball to hit the ground, when thrown upward from a 20m high cliff with an initial speed of 5m/s and subjected to a gravitational pull of 10m/s², is about 3 seconds.
Explanation:The time it takes for the ball to hit the ground is calculated using the equation of motion, t = sqrt((2h)/g), where 'h' is the height of the cliff and 'g' is the acceleration due to gravity. Since the ball is thrown upwards first, we also need to consider the time it takes for the ball to reach its maximum height and start falling down. This can be calculated using the equation t = v/g, where 'v' is the initial speed of the ball.
So, the total time would be the time it takes for the ball to reach the maximum height and fall down back to the ground, which is calculated using the following equation: t_total = t_up + t_down. Given that 'h' is 20m, 'v' is 5m/s, and 'g' is 10m/s², the total time it would take for the ball to hit the ground at the base of the cliff comes out to be approximately 3 seconds.
Learn more about Motion here:https://brainly.com/question/35591666
#SPJ2
If the thrust was cut in half, what would the new acceleration of the space shuttle be? SHOW
WORK
If the thrust was cut in half, the new acceleration of the spare shuttle would be half of its original acceleration.
How to calculate the new acceleration of the space shuttle?Assuming that the mass of the space shuttle remains constant, the new acceleration of the space shuttle would be half of its original acceleration.
The formula for acceleration is:
a = F/m
where,
a = acceleration
F = force applied
m = mass of the object
If the force is cut in half, the new acceleration can be calculated as follows:
a' = (F/2)/m
where,
a' = new acceleration
Simplifying this equation, we get:
a' = F/2m
Since we know that a = F/m, we can substitute this expression into the equation above to obtain:
a' = a/2
So, the new acceleration of the space shuttle would be half of its original acceleration.
Learn more about acceleration in: https://brainly.com/question/12550364
#SPJ1
how does a lift pump work
Light passes from water into a block of transparent plastic. The angle of incidence from the water is 31° and the angle of refraction in the block is 27°. What is the index of refraction for the plastic?
The index of refraction for the plastic is determined as 1.5.
What is the index of refraction for the plastic?The index of refraction for the plastic is calculated using Snell's law.
sinθ₁/sinθ₂ = n₂/n₁
Where;
θ₁ is the angle of incidenceθ₂ is the angle of refractionn₁ is the index of refraction of the initial mediumn₂ is the index of refraction of the second mediumsin(31°)/sin(27°) = n₂/1.33
n₂ = 1.33 x sin(31°)/sin(27°)
n₂ = 1.5
Learn more about light refraction here: https://brainly.com/question/15315610
#SPJ1
A lamp draws a 1 A current when connected to a 6 V battery. When a 9 V battery
is used, the lamp draws 1.5 A. Does the lamp obey Ohm's law?
The lamp exhibits a constant obstruction, which is a quality of a conductor that abides by Ohm's law.
What exactly is ohm's law?The relationship amongst the three variables in a circuit with electricity can be calculated using Ohm's Law. Ohm's Law (E = IR) is as crucial to electronics students as Einstein's Physics equation (E = mc2) is to physicists in terms of its fundamental importance. E = I x R.
Ohm's law is known for what?The law is named after German mathematician Georg Ohm, who in an 1827 dissertation documented measurements pf applied current as well as voltage over straightforward electrical circuits with a range of wire lengths.
To know more about ohm's law visit:
https://brainly.com/question/1247379
#SPJ1
which of the following statements is not correct A. matter is made up of molecules B. the molecules of matter are in constant motion C. Brownian motion is an evidence of particulate nature of matter D. molecules of a liquid are stationary E. atoms combine to form molecules
Answer:
The Correct answer is D
molecules of liquid are stationary
Three squares of sides 10.0 cm, 20.0 cm, and 30.0 cm are placed next to
one another (in contact) as shown. What is the position of the center of
mass of this system? Assume the squares are made of the same uniform
material.
The position of the center of mass of the system is 13.0 cm from the left edge of square A.
How do you determine a system's center of mass?The center of mass can be calculated by multiplying the masses you're trying to find the center of mass between by their positions. Then you add them all up and divide the total by the sum of the individual masses.
We use the formula for the center of mass of a system of particles,
[tex]x_c_m = (m_Ax_A + m_Bx_B + m_C*x_C) / (m_A + m_B + m_C)[/tex]
[tex]m_A[/tex] = mass of square A
[tex]m_B[/tex] = mass of square B
[tex]m_C[/tex] = mass of square C
[tex]x_A[/tex] = distance of the center of mass of square A
[tex]x_B[/tex] = distance of the center of mass of square B
[tex]x_C[/tex] = distance of the center of mass of square C
Substitute values,
[tex]x_c_m = (100.0 cm^2 * 5.0 cm + 400.0 cm^2 * 10.0 cm + 900.0 cm^2 * 15.0 cm) / (100.0 cm^2 + 400.0 cm^2 + 900.0 cm^2)[/tex]
[tex]x_c_m = 13.0 cm[/tex]
To know more about the center of mass visit:
https://brainly.com/question/15199384
#SPJ1
what heat is required to change 20 g of 26 ∘C water to 100 ∘C steam. Express your answer in calories.
Answer:
Let M be the mass of water present:
ΔQ = M (T2 - T1) Sw + M Ss using specific heat of water and latent heat of vaporization
ΔQ = 20 g * 74 deg C * 1 cal / (g & deg C) + 20 g * 540 cal / g)
ΔQ = 12,300 cal
wo pith balls hang from strings. The strings are attached to a bar, 6 centimeters apart. One ball has a positive charge, and the other ball has a negative
harge. What does the distance between the balls reveal? (1 point)
A.)The shorter the distance between them, the lesser the electric charges on the balls.
B.)The greater the distance between the balls, the greater the electric force between them.
C.) The shorter the distance between the balls, the greater the electric force between them.
D.)The distance between the balls is not related to their electric charges or to the electric force between them.
The shorter the distance between the balls, the greater the electric force between them.
option C
What is the electric force between the balls?The electric force between charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
F = kq²/r²
where;
k is Coulomb's constantq is the magnitude of the charger is the distance between the chargesTherefore, if the charges on the pith balls are fixed, the closer they are, the stronger the electric force between them will be. So option C is the correct answer.
Learn more about electric force here: https://brainly.com/question/17692887
#SPJ1
Superman is standing 283 m horizontally away from Lois Lane. A villain drops a rock from 4.00 m directly above Lois.
How fast will Superman be traveling when he reaches Lois?
If Superman remains 283 metres away from Lois Lane, she must fall 120 metres before he can kinetic grab her. A bad guy throws a rock right at Lois from a height of 4 metres.
What does the term "horizontality" mean?a list of horizontality definitions. the property of being horizontally parallel. "Houses with a pronounced horizontality" as a form of: position, spatial interaction. the spatial characteristic of the location or orientation of something.
In what does kinetic?Store-bought Fine sand plus polydimethylsiloxane are combined to create kinetic sand. It is a peculiar chemical in that stress causes its viscosity to rise. It can be sliced and formed into interesting shapes. It's hardly the least expensive item to purchase, either.
To know more about kinetic visit:
https://brainly.com/question/28050880
#SPJ1
A toddler pushes a trolley of toy bricks. She takes 2 minutes to push the trolley around the garden and does 6000 J of work. Calculate the power generated by the toddler.
A ball punted vertically has a hang time of 3.8 seconds.
A. Construct position-time, velocity-time, and acceleration-time graphs and a motion map for this situation.
B. What was its initial velocity?
Answer:
A.
Position-time graph:
The position-time graph for the ball punted vertically will be a parabolic curve, with the vertex at the highest point of the ball's trajectory. Since the initial position is zero, the curve will go through the origin.
Velocity-time graph:
The velocity-time graph will be a straight line that starts at the initial velocity and decreases linearly until it reaches zero at the highest point of the ball's trajectory. After that, the velocity increases linearly in the negative direction until the ball hits the ground.
Acceleration-time graph:
The acceleration-time graph will be a constant negative value, representing the acceleration due to gravity.
Motion map:
A motion map is a diagram that shows the position of an object at several specific times during its motion. For the ball punted vertically, the motion map would look like this:
|O|------|-------|------|-------|------|H|
O represents the initial position, and H represents the highest point of the ball's trajectory. The "|" symbols represent the position of the ball at regular intervals of time.
B.
To find the initial velocity of the ball, we can use the hang time and the acceleration due to gravity.
Hang time = 3.8 seconds
Acceleration due to gravity = -9.8 m/s^2
At the highest point of the ball's trajectory, the velocity is zero. Therefore, we can use the following kinematic equation to find the initial velocity:
hang time = (final velocity - initial velocity) / acceleration
Solving for initial velocity:
initial velocity = final velocity - (hang time x acceleration)
final velocity = 0 m/s
hang time = 3.8 s
acceleration = -9.8 m/s^2
initial velocity = 0 - (3.8 x -9.8)
initial velocity = 37.64 m/s
Therefore, the initial velocity of the ball was 37.64 m/s.
In your own opinion, what is the impact of water recreation to marine diver you think so?
I can provide you with an analysis of the potential impact of water recreation on marine diversity.
Water recreation activities, such as swimming, snorkeling, scuba diving, and boating, can have both positive and negative impacts on marine diversity.
Positive impacts:
Increased awareness: Water recreation can lead to increased awareness and appreciation for marine life and ecosystems, encouraging people to protect and conserve these environmentsEconomic benefits: The tourism industry, including water recreation, can generate revenue for local communities, which may be used to support marine conservation efforts and establish protected areas.Negative impacts:
Physical damage: Water recreation can cause physical damage to marine habitats, such as coral reefs, seagrass beds, and mangroves, due to anchor drops, boat groundings, or careless swimming and diving activities.Disturbance to marine life: Recreational activities can disturb marine animals in their natural habitats, causing stress or behavioral changes, which may affect their ability to find food, reproduce, or escape predators.Pollution: Water recreation can contribute to pollution in marine environments through littering, fuel spills, or the release of chemicals from sunscreen and other personal care products.
8. An object thrown into the air stops at the highest point in its path. Is it in equilibrium at this point? Explain. 9. Can the speed of an object change if the net work done on it is zero? 10. Can a car move around a circular racetrack so that the car has a tangential acceleration but no centripetal acceleration? 11. Is a large amount of pressure always caused by a large force? Explain your answer. 12. The period of a simple pendulum, defined as the time necessary for one complete oscillation is measured in time units and is given by the equation L T = 2π ag where L is the length of the pendulum and a, is the acceleration due to gravity, which has
No, it is not in equilibrium at this point. This is because, at the highest point in its path, the object is still in motion and is still subject to the forces of gravity and air resistance.
What is resistance?Resistance is the opposition to something or the refusal to accept or comply with it. It is a measure of the opposition to the flow of electric current, or other forms of energy. Resistance is measured in ohms, which is the amount of energy required to move one ampere of current through one ohm of resistance.
No, it is not in equilibrium at this point. This is because, at the highest point in its path, the object is still in motion and is still subject to the forces of gravity and air resistance which are acting to move it back down.
Yes, the speed of an object can change if the net work done on it is zero. This is because an object can gain or lose energy through non-conservative forces, such as friction, even if no net work is done on the object.
Yes, a car can move around a circular racetrack so that the car has a tangential acceleration but no centripetal acceleration. This is because the car can be travelling at a constant speed in a curved path, which will produce a tangential acceleration, but no centripetal acceleration.
No, a large amount of pressure is not always caused by a large force. Pressure is defined as force per unit area, so a large amount of pressure can be caused by a small force if it is acting over a large area. Similarly, a small force can cause a large amount of pressure if it is acting over a small area.
If the length of the pendulum is doubled, the period of the pendulum will also double. This is because the period of a pendulum is directly proportional to its length, so if the length is doubled the period will also double.
To learn more about resistance
https://brainly.com/question/17563681
#SPJ1
Complete question:
An object thrown into the air stops at the highest point in its path. Is it in equilibrium at this point? Explain. 9. Can the speed of an object change if the net work done on it is zero? 10. Can a car move around a circular racetrack so that the car has a tangential acceleration but no centripetal acceleration? 11. Is a large amount of pressure always caused by a large force? Explain your answer. 12. The period of a simple pendulum, defined as the time necessary for one complete oscillation is measured in time units and is given by the equation L T = 2π ag where L is the length of the pendulum and a, is the acceleration due to gravity, which has a value of 9.8 m/s². How does the period of the pendulum change if the length of the pendulum is doubled?
