Answer:
Below
Explanation:
Mech adv = effort arm / load arm = 15 / 5 = 3
To solve this we must be knowing each and every concept related to force. and its different types. Therefore, the mechanical advantage is 3.
What is force?A force is an outside entity that has the power to alter a body's state of rest or motion. It has a direction and a magnitude. The point where forces are applied is determined either by the force's direction as well as the application of the force.
Your training at this level should place a major emphasis on the idea which a push or even a pull was refereed to as a force. In our daily lives, forces appear in a variety of ways. as in weight and power. It refers to the force a bat applies to a ball and the strength a hairbrush has when stroking hair.
Mech adv = effort arm / load arm = 15 / 5 = 3
Therefore, the mechanical advantage is 3.
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Which is an example of radiant energy producing motion
A) a battery powered fan
B) a solar powered light bulb
C) solar powered fan
D) battery powered light bulb
Answer:
i think D
Explanation:
correct me if I wrong
a race car is moving at a constant speed around a track.What about the race car is changing and why
A race car is moving at a constant speed around a track. The race car is changing its velocity as the direction of motion changes.
What is velocity?The primary indicator of an object's position and speed is its velocity. It is the distance that an object travels in one unit of time. The displacement of the item in one unit of time is the definition of velocity.
The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.
As the race car is moving at a constant speed around a track, the magnitude of velocity remains same but during race it may changes its direction of motion, that is why, velocity of it, which depends on both magnitude and direction, may changes.
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Why would a parcel of air rise relative to other air in the atmosphere?
a. A parcel of air will rise if it has a lower density than the surrounding air.
b. A parcel of air will rise if the air in the parcel has a lower mass than the surrounding air.
c. A parcel of air will rise if it has a higher density than the surrounding air.
d. A parcel of air will rise if the air in the parcel has a higher mass than the surrounding air.
A) A parcel of air will rise if it has a lower density than the surrounding air. is the relative order of air in the atmosphere.
In the atmosphere, air moves from high pressure to low pressure areas. When a parcel of air is heated, it expands and becomes less dense than the surrounding air. As a result, the parcel of air rises because it is less dense than the surrounding air, which creates a lower pressure area.
This process is known as convection and is responsible for many weather phenomena such as thunderstorms and cloud formation. In contrast, if a parcel of air cools and becomes more dense, it sinks because it creates a higher pressure area than the surrounding air.
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4. Driving home from school one day, you spot a ball rolling out in the street. You brake for 1.20 s, slowing your 950 kg car from 16 m/s to 9.5 m/s. a. What was the average force exerted on your car during braking
As stated in the preceding statement When braking, an automobile experiences an average force of 5,145.8 N.
Describe acceleration:An object is considered to have been pushed if its velocity changes. Depending on whether an item is moving faster, slower, or in a new direction, its velocity may change. Examples of acceleration include a falling fruit, the moon orbiting the earth, and an automobile that has stopped at a stop sign.
v = v o + a t ( the acceleration will be negative )
9.50 = 16.0 + a * 1.2
a * 1.2 = -16.0 + 9.50
a * 1.2 = - 6.5
a = - 6.5 : 1.2
a = - 5.4167 m/s²
F = m * a
950 kg * 5.4167 m/s²
F = 5,145.8 N ( the average force exerted on a car during braking )
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is charles brushes discovery still used today?
Answer:
yes
Explanation:
A kettle efficiency is 72% , the kettle uses 300 j to boil water.
A- how much of this energy ends up stored in water inside the kettle ?!
b-draw the sankey diagram.
help plss its for today
Answer:
72% = output / 300j * 100
output = 216 joules
300j - 216j = 84joules remains in the water
The types of electronic components include diodes, transistors,
and integrated circuits.
TRUE
FALSE
Yep. Those three things are all electronic components.
There are a lot more besides those.
Turn your head _______ and right and glance over your shoulder to view what cannot be seen in the side-view mirrors. back down left up Submit answer
Turn your head left and right and glance over your shoulder to view what cannot be seen in the side-view mirrors.
What is mirror ?
An item that reflects an image is a mirror or looking glass. When focused through the lens of the eye or a camera, light that reflects off a mirror will reveal a picture of whatever is in front of it. Mirrors reflect light at an equal but opposite angle, which changes the direction of the image.
What is direction?
Direction can refer to a thing's course, the route one must take to get there in particular, the direction something is beginning to take shape, or the direction you are facing. Going straight instead than left is an example of direction.
Therefore, Turn your head left and right and glance over your shoulder to view what cannot be seen in the side-view mirrors.
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A ball has a mass of 2g and a velocity of 3m/s. What is the ball's Kinetic Energy?
Answer: im not sire
Explanation: very sorry im not sure
What is the relationship between mass and kinetic energy evidence?
The equation for Kinetic Energy is: KE = 1/2 mv2. Kinetic energy has a direct relationship with mass, meaning that as mass increases so does the Kinetic Energy of an object.
In physics, an object's kinetic energy is the energy it has as a result of its motion. It is defined as the amount of work required to accelerate a body of a given mass from rest to a certain velocity.
The body retains its kinetic energy after gaining it during acceleration until its speed changes. The body does the same amount of work while slowing down from its current pace to rest. Formally, kinetic energy is any term in a system's Lagrangian that contains a time derivative.
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What type of stretch stretches would benefit an individual preparing for activity?
Dynamic stretching is typically recommended for individuals preparing for physical activity.
Dynamic stretching involves movements that gradually increase in range of motion and muscle length, such as arm swings, leg swings, and torso twists.
These exercises help to improve flexibility, range of motion, and muscular coordination, as well as increase blood flow to the muscles to prepare them for activity. Static stretching is best done after the activity to help reduce muscle soreness and keep the muscles flexible.
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Four particles with masses 4 kg, 4 kg, 4 kg, and 7 kg are connected by rigid rods of negligible mass as shown. Assume the system rotates in the xy plane about the z axis (origin, O) with an angular speed of 9 rad/s. Find the rotational energy of the system about the x axis.
The rotational Kinetic energy of the system about X axis is 24624 J.
Let the distance of the mass 4kg, from O is r1,
r = √(4² + 4²)
r = √32m
The distances of masses to the rotation axis is same -
say,
r1 = r2 = r3 =r4 = √32
Hence,
I = ∑ mi r1²
I = r² ∑(m1 + m + m3 + m4)
= 32(19)
I = 608 Kg m²
We know that rotational energy of system is given as,
K = 1/2 Iw²
Given,
W = 9 rad/sec
∴ K = 1/2 × 608 × 9²
K = 24624 J
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A truck with mass of 3,250 kg traveling with a velocity of 25.0 m/s hits a car at rest. After the collision, the truck moves with a velocity of 19.0 m/s. The car has a mass of 2,820 kg. If the two vehicles do not stick together, how fast is the car moving after the collision?
Answer:
6.9 m/s
Explanation:
This is a conservation of momentum problem, so the total momentum before the collision must equal the total momentum after the collision.
P = mv
m1v1 + m2v2 (before) = m1v1 + m2v2 (after)
(3250kg)(25.0 m/s) + (2820 kg)(0m/s) = (3250 kg)(19.0 m/s) + (2820 kg)(v2)
Now you can solve for the v of the car after the collision:
81250 kg·m/s + 0 = 61750 kg·m/s + (2820 kg)v2
19500 kg·m/s = (2820 kg)v2
v2 = 19500 kg·m/s / 2820 kg = 6.9 m/s
Helpppppppppppppppp its timeddddddddddd
Answer:
The answer is the third option.
Explanation:
The electrostatic force, Coulomb's force, is a force that depends on the inverse of the square distance, it is a non-contact force.
On the other hand, stretched spring is a contact force, it needs a contact external force.
Therefore, the answer is the third option.
I hope it helps you!
How do you calculate sound intensity level?
Sound intensity level (SIL) is measured in decibels (dB).
What is sound?
Sound is a type of energy created by the vibration of particles in a medium, such as air, that can be heard when it reaches a person or animal's ear. Sound can travel through solids, liquids, and gases, and can have different pitches and volumes.
Sound intensity level is defined as the ratio of the sound pressure to a reference pressure level. It is calculated using the following equation: SIL (dB) = 10 log10 (I/I_0), where I is the sound intensity and I_0 is the reference sound intensity equal to 10^−12 W/m^2.
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4. A 55.0 g object connected to a spring with a force constant of 35.0 N/m oscillates on a horizontal, frictionless surface with an amplitude of 8.00 cm. a) Find the total energy of the system. 112 mJ b) Find the speed of the object when the position is 1.20 cm.
According to the given data the total energy (E) of the system is 11.2 m J.
What is an illustration of oscillation?A periodic movement between two sites is what is referred to as oscillation in this type of behavior. Examples of oscillating motion include plucking a guitar string, pendulum swinging, and pogo stick bouncing. The major distinction between oscillation, vibration, and simple harmonic motion is that oscillation is a general term for any repeating fluctuation about a central value, whereas vibration is a term used especially to describe mechanical oscillations.
Energy is given by-
E= 1/2KA²
E = 1/2 ×N/m× (8×10∧-2 m)²
E = 11.2 m J
Speed of the object-
v = ω[tex]\sqrt{A2-x2}[/tex]
v = [tex]\sqrt{K/m}[/tex] [tex]\sqrt{A2 - x2}[/tex]
v = [tex]\sqrt{35/55*10-3}[/tex] ×( (8×10-2)∧-2 - (1.20 × 10-2)∧2 )[tex]^{-1/2}[/tex]
v = 25.22 × 0.079
v = 2 m/s.
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Read the following claim.
The chain reaction that produces thermonuclear bombs occurs rapidly.
Which sentence from the article provides the BEST support for the above statement?
A)Thermonuclear bombs and atomic bombs are both nuclear weapons, but they work differently at a basic level.
B)Thermonuclear bombs, on the other hand, get their power from combining nuclei together.
C)This mass loss is converted into energy, which is very intense and where fusion gets its explosive power.
D)The entire series of explosions in a thermonuclear bomb takes a fraction of a second to occur.
Answer:
D I'm pretty sure :)
Explanation:
hope this helps
How does convection cause tectonic plates to move?
A
Convection keeps the plates thin enough to move.
B
Convection makes the plates solid enough to move.
C
The rising heat of convection currents moves the almost-liquid rocks.
D
The pressure of convection bends rocks until they break completely.
The plates become sufficiently stable by convection. The almost liquid rocks are moved by the convection currents' growing heat, hence option C is correct.
What are tectonic plates?Rocks flex under the pressure of convection until they entirely fracture. Radiation decay in the core causes convection currents, which are produced by heat rising and sinking inside the mantle.
In convection currents, the plates are moved. The separation of plates occurs when convection currents split close to the Earth's crust.
Therefore, the convergence of convection currents causes plates to move in the same direction.
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An argon ion laser emits light at 488 nm. What is the frequency of this radiation
The frequency of the radiation will be 6.098 x 1014 Hz.
The frequency of a radiation is measured in hertz (Hz) and is the number of complete cycles per second of a wave. It is commonly used to measure electromagnetic radiation, such as radio waves and x-rays.
An argon ion laser emits light at a wavelength of 488 nm.
To find the frequency of this radiation, we need to use the equation f = c/λ, where
c is the speed of light (299,792,458 m/s) and
λ is the wavelength in meters.
Plugging in 488 nm (or 0.000488 m) for λ gives us a frequency of 6.098 x 1014 Hz.
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Which type of engine takes in air, accelerates it, and pushes it out the exhaust nozzle to produce thrust that pushes the aircraft forward
A jets engine is a device that produces a strong pushing force known as thrust out of liquid fuel that is high in energy.
What do aircraft turbine engines do?A rotary engine called a gas turbine converts the flow of combustion into energy.Axial or centrifugal compressors (or both) can be used to boost air pressure and temperature before it enters the combustion chamber. Ambient air is pulled into the engine intake.
How is thrust produced by a jet engine?By raising internal engine pressure, jet or rocket engines generate thrust.This higher pressure inside the jet and rocket engine causes the forward force to be greater than the backward force.
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what is the gravitational potential energy of a 150kg object suspended 5m above the earths surface?
Can anyone answer this question its a science question NO LINKS !!!!
Work is equal to force times
joules
distance
time
watts
A typical spectrophotometer has a path length (the distance light travels through a sample) of 1 cm. Light travels at approximately 3.0 x 108 m/s in vacuum. How long does it take (in ns) for light to travel 1.0 cm
The time taken is 3.33 ns for light to travel 1.0 cm in a spectrophotometer.
What is time?
Time is defined as a scalar quantity that describes the progression of events in the universe. It is often considered to be the fourth dimension of spacetime, along with the three dimensions of space. Time is closely related to the concepts of causality, or the relationship between cause and effect, and is considered to be a fundamental aspect of the physical universe.
The distance light travels in 1 cm is equal to 1 cm x 10^-2 m. To find out how long it takes for light to travel this distance, we can use the formula:
time = distance / speed
Where distance is the distance light travels (1.0 cm x 10^-2 m), and speed is the speed of light in vacuum (3.0 x 108 m/s).
time = (1.0 cm x 10^-2 m) / (3.0 x 108 m/s)
time = 3.33 x 10^-10 s
To convert this time to nanoseconds (ns), we can multiply the time in seconds by 1 billion (10^9):
time = 3.33 x 10^-10 s x 10^9 ns/s
time = 3.33 ns
Therefore, the time taken is approximately 3.33 ns for light to travel 1.0 cm in a spectrophotometer.
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1) compare the isochron map to the topographic map of the seafloor in the previous investigation. which seafloor features are associated with young crust what can you infer from this?
2) how does the age of the seafloor change as you move away from these features?
what can you conclude from this evidence?
From this evidence, you can conclude that the seafloor is not a static feature and is constantly being renewed through the movement of tectonic plates and the creation of new crust at mid-ocean ridges. The age of the seafloor can be used to help understand the history and dynamics of the Earth's crust and how it has evolved over time.
HOPE IT HELPS!figure 2 shows a 7520kg lorry. the driver spots a hazard ahead and applies the brakes. the lorry decelerates uniformly and comes to a stop 50m after the brakes are applied. Estimate the braking force needed to stop the lorry in newtons
Answer:
25 m/s
Explanation:
v^2-u^2=2as
a= (v^2-u^2)
Melanye and Kaitlynn were traveling on a train for 6 hours. Over that time the train was at an average velocity of 70km/hr west. How far did Melanye and Kaitlynn travel?
What is the role of diffusion in the dialysis process?
A concentration gradient drives the ion-exchange membrane (IEM) separation procedure known as diffusion dialysis (DD).
Diffusion dialysis is referred to be a spontaneous separation technique since the concentration gradient primarily drives the separation process. A membrane separation procedure is DD.
Diffusion is the movement of a solute along a concentration gradient through a membrane. Small molecules are eliminated in this manner during hemodialysate. Diffusion is the net transfer of a substance from a location of high concentration to a region of low concentration, according to physicists and chemists.
Diffusion in hemodialysis is formally defined as the transport of solutes as a result of random molecular motions down its concentration gradient through a semipermeable membrane. Diffusion is how most toxins are removed during dialysis.
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Why can you see your image in a pond and why does the image faint when the water is not still? anyone?
Answer:
Reflection
Explanation:
this because water reflects light
A small rectangular object of unknown material is examined in the laboratory. Iron filings and a compass needle are not attracted to the object. The object is suspended from a light string and is free to swing but does not align itself with Earth’s magnetic field. A strong magnetic field is switched on perpendicular to the long axis of the object. The object changes its orientation so that it partially aligns with the magnetic field. After the field is switched off, the object and string eventually return to their original orientation. Once again, it is observed that iron filings and a compass needle are not attracted to the object. The object most likely is exhibiting the property of
The object is likely exhibiting the property of diamagnetism.
A small rectangular object of unknown material is examined in the laboratory. Iron filings and a compass needle are not attracted to the object. The object is suspended from a light string and is free to swing but does not align itself with Earth’s magnetic field. A strong magnetic field is switched on perpendicular to the long axis of the object. The object changes its orientation so that it partially aligns with the magnetic field. After the field is switched off, the object and string eventually return to their original orientation. Once again, it is observed that iron filings and a compass needle are not attracted to the object. The object most likely is exhibiting the property of Diamagnetism.
Diamagnetism is a type of magnetism that is exhibited by all materials, and it is the weakest type. It results in a repulsive force between the material and an external magnetic field. This repulsion is what caused the object to partially align with the magnetic field when it was switched on.
The lack of attraction between the iron filings and the compass needle indicates that the object is not ferromagnetic or paramagnetic, which are both stronger types of magnetism. When the magnetic field was switched off, the repulsive force between the object and the field was no longer present, allowing the object and the string to return to their original orientation.
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What is the equation for torque use D for lever arm and F for force?
Torque is calculated using the formula =|r| |F|sin = | r | | F | sin, where |r| is the size of the lever arm, |F| is the size of the force vector, and is the angle formed between the two vectors.
force a "F" What is the torque calculation equation?Under ideal circumstances, M = F x r would be the equation for drive torque. In this instance, r denotes the length of a lever that is fastened to the axis of rotation and whose end is subject to a perpendicular force, F. The point of application, however, may alternatively be chosen at random.
R and F in the torque formula: what are they?The rotational rate (or "r") of an object is the amount by which a force acting on it rotates it. We'll refer to the force a "F" The moment arm, indicated by the letter "r," is the distance from the pivot point to the point at which the force acts.
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