a block of mass m is attached to a spring and placed on an inclined plane. the spring has a spring constant k, and there is negligible friction between the block and inclined plane.the block is released from rest at the position shown in the figure above with the spring initially unstretched. what distance d does the block slide down the plane before coming momentarily to rest?
Answers
The distance travelled by the block of mass m will be l₀ + x or d which can be calculated through implementing the Conservation of energy from Work energy theorem
For l₀ + x, (from figure)
sinᶿ = h / (l₀+x) ----- equation 1
We know from conservation of energy,
Ka + Ua = Kc + Uc
Here
Ka = kinetic energy at point A
Ua = potential energy at point A
Kc = kinetic energy at point C
Uc = potential energy at point C
Since the block is at rest Ka = 0 & block comes to rest after moving Kc = 0 as well
Therefore Ua = Uc
Ua = m.g.h
Uc = ½ kx²
m.g.h = ½ kx²
h = kx²/2mg ---- equation 2
Substitute the obtained value of h i.e. equation 2 in equation 1 for calculation of distance travelled by the block on an inclined plane.
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Answer:
d = (2mg sinθ) / k
Explanation:
We can use the conservation of energy.
At the point when the block comes to rest, all of its initial potential energy mgh is converted into the potential energy stored in the spring (1/2)kx², where x is the amount by which the spring is compressed.
Using trigonometry, we can see that the height h of the incline is equal to
d sinθ
where d is the distance traveled by the block down the incline.
We know this because d represents an incline and to find the y value of an incline we use sinθ
Therefore, we can write:
mgh = (1/2)kx²
Substituting h = d sinθ and solving for d, we get:
mgd sinθ = (1/2)kd²
d = (2mgsinθ)/k
Therefore, the correct answer for the distance that the block slides down the incline before coming momentarily to rest is (2mg sinθ)/k.
I hope this helped! :)
Related Questions
. suppose that the central diffraction envelope of a double-slit diffraction pattern contains 11 bright fringes and the first diffraction minima eliminate (are coincident with) bright fringes. how many bright fringes lie between the first and second minima of the diffraction envelope?
Answers
7 bright fringes lie between the first and second minima of the diffraction envelope.
Diffraction is defined because of the interference or bending of waves around the corners of an obstacle or via an aperture into the vicinity of the geometrical shadow of the impediment/aperture. The diffracting object or aperture correctly becomes a secondary source of the propagating wave.
Refraction is the alternate in direction of waves that takes place whilst waves journey from one medium to another. Refraction is always accompanied by means of a wavelength and speed alternate. Diffraction is the bending of waves around barriers and openings. the amount of diffraction increases with increasing wavelength.
Calculation:-
Here d = 15 a/2(since there are 15 bright fringes ).
Then for the first minimum which occurs at an angle1
then a sin? 1 =? (m=1)
For the second minimum which occurs at an angle= of 2
then a sin?2 = 2? (m=2)
then we calculate the values of m for which
1 < ?< ?2 for sin?1 < sin?< sin?2 ? < 2m?/15 <2?
that is 1<2m/15 <2
Hence, there are 7 bright fringes.
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please this is serious
Answers
Distance x force equals work done. When this occurs, the amount of work done is measured in joules (J), the amount of force is recorded in newtons (N), and the distance travelled along the force's path is measured in meters (m).
What does work-done-unit mean?The SI unit of labor is called a joule (J).
The following questions have the following answers:
1) In the picture below, F1 acts downward and F2 acts upward.
2) Moments on the LHS equal F1d1 and on the RHS, F2d2.
Moment in LHS= RHS F1d1= F2d2 F1= (20Kg 10)/200 N Consequently, 200 N0.8= F20.95 160= 0.95 F2 = 168.42 N
The net force has a magnitude of 168.42 N and is directed upward.
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Calculate the efficiency of a machine that requires 20 J of input work to do 10 J of output work. What is the efficiency of the machine? (in percent, but write the number only)
Answers
The efficiency of the machine is ξ= 50%.
Given - 20 joules and 30 joules are input and output work of the system respectively.
To find the efficiency of the system.
principle ;- Efficiency represents the capability of a system to do work .
Mathematically , efficiency has an equation that relates the input and output work and accurately provides the result.
Formula - ξ= οₙ/Iₙ x 100
οₙ = output work , Iₙ= input work
Calculations :- ξ= { 10/20 }x 100
ξ= 50%
Result- The Efficiency of the machine is 50%.
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a boy drops a rock off of a bridge and times its fall into a river. if it takes the rock 10.0 seconds to fall, what is the velocity of the rock when it hits the river?
Answers
The rock's impact velocity with the river is - 98.1 m/s. At the time of impact, the rock was traveling at a speed of 42.14 m/s.
Find out how fast a rock is moving ?G = -9.81 m/s2 is the acceleration of gravity close to the earth. Simply multiply the acceleration of gravity by the period of time since the object was released to determine the object's speed (or velocity).
In other words, velocity is equal to -9.81 m/s2 * time, or V = gt.
The rock was traveling at 42.14 m/s when it impacted the ocean.
Then V = -9.81 * 10 = -98.1.
There for,
The rock's impact velocity with the river is -98.1m/s .
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PLEASE ASAP HELP, ILL GIVE WHATEVER POINTS I CAN BUT PLEASE HELP ASAP ASAP
Paul was kicking around a soccer ball with his friend Leo the Lion. Paul decided to kick the ball off a 9.63 m tall cliff and lands on the ocean, 8.85 m away from the edge of the cliff.
Th ball is in the air for S._______m/s
The horizontal velocity of the ball as it rolls off the table is_________m/s
The vertical velocity of the ball right before it hits the ground is________m/s
The horizontal velocity of the ball right before it hits the ground is___________m/s
The initial vertical velocity as soon as the ball comes of the cliff is________m/s
Answers
(1) The ball is in the air for 1.4 seconds.
(2) The horizontal velocity of the ball as it rolls off the table is 6.32 m/s.
(3) The vertical velocity of the ball right before it hits the ground is 13.72 m/s.
(4) The horizontal velocity of the ball right before it hits the ground is 6.32 m/s.
(5) The initial vertical velocity as soon as the ball comes of the cliff is 13.72 m/s.
What is the time of motion of the ball?The time of motion of the ball is calculated by applying the following equation.
t = √(2h/g)
where;
h is the height of the cliffg is acceleration due to gravityt = √(2h/g)
t = √(2 x 9.63 / 9.8)
t = 1.4 seconds
The horizontal velocity of the ball is calculated as follows;
v = d/t
where;
d is the horizontal distance travelled by the ball = 8.85 mv = 8.85 m / 1.4 s
v = 6.32 m/s
The vertical velocity of the ball before it hits the ground is calculated as;
vf = vi + gt
vf = 0 + 9.8 x 1.4
vf = 13.72 m/s
The horizontal velocity of the ball right before it hits the ground is calculated as;
the initial velocity of a projectile = final horizontal velocity
vxf = vxi = 6.32 m/s
The initial vertical velocity as soon as the ball comes off the cliff = final vertical velocity = 13.72 m/s
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an inelastic collision between two objects is characterized by the following a) total momentum of the system is conserved b) total energy of the system is conserved c) total kinetic energy of the system remains constant d) both a and b are true e) both a and c are true
Answers
An inelastic collision between two objects is characterized by the fact that a) the total momentum of the system is conserved. Choice A is correct
Inelastic collisions are the collisions in which the kinetic energy is lost. The momentum of the system is conserved in inelastic collisions, but kinetic energy is not. This is because some of the kinetic energy was transferred to another.
Suppose two similar cars are approaching. They collide, but the sled is equipped with a magnetic clutch so that when they collide they combine into a single agglomerate. This type of collision is completely inelastic as the maximum possible kinetic energy is lost. This does not mean that the final kinetic energy of the system is necessarily zero. Momentum is not yet maintained.
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a track star runs a 230 m race on a 230 m circular track in 26 s. what is his angular velocity (in rad/s) assuming a constant speed? (enter the magnitude.)
Answers
Using the concepts of angular displacement, we got that 0.241 rad/s is the angular velocity of track star which runs a 230 m race on a 230 m circular track in 26 s.
We know very well that angular velocity is given by change in angular displacement per unit time.
Here, we can see that a truck distance covered and length of circular track is same.
Perimeter of circular track is equal to the distance covered by the truck.
It means, truck rounds a full circle in 26 sec
So, the angle covered by truck is 360° or 2π radian.
Initially angle is 0 radian and final angle is 2π radian
Therefore, angular velocity =(θ[tex]_f_i_n_a_l[/tex] -θ[tex]_i_n_i_t_i_a_l[/tex])/time
=> ω=(2π-0)/26
=>w=(2π/26)
=>w=(2×3.14)/26
=>ω=6.28/26
=>w=0.241 rad/sec.
Hence, when a track star runs a 230 m race on a 230 m circular track in 26 s, the angular velocity assuming a constant speed is 0.241 rad/sec.
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what is the work done by the force of gravity on the beachball during this process? give your answer with the correct sign (positive or negative).
Answers
The force that pulls items toward the center of a planet or other entity is called gravity. All of the planets are kept in orbit around the sun by gravity.
Is work done by gravity positive or negative?Work done by a force is defined as the sum of an object's or particle's displacement and the component of the force acting in the direction of the object's motion.The product of an object's displacement and the component of the applied force that is directed in the direction of the object's displacement is known as the work done by a force.Depending on which way an object is going, the amount of work done to overcome gravity can either be negative or positive.The work done by gravity will be negative if the object goes upward since gravity pulls in the opposite direction from the displacement. The work done by gravity will be positive if an object moves downward since both gravity and displacement are moving in the same direction.To Learn more About gravity refer to :
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a car company wants to ensure its newest model can stop in 50 m when traveling at 30 m/s (which is about 108 km/h). if we assume constant deceleration, find the value of deceleration that accomplishes this
Answers
A decrease in velocity is referred to as deceleration. If car is moving at 30 m/s and stop in 50 m .The value of deceleration is 11.56 ms−2.
How to calculate deceleration ?While acceleration is motion in which an object's speed varies every second, deceleration is motion that causes an object to slow down.
We are aware that acceleration refers to an object's rate of increase in speed, and deceleration refers to an object's rate of decrease in speed. For instance, when we apply the brakes while driving, we benefit from the vehicle's ability to decelerate and slow down.
The Deceleration Formula is the final velocity minus the initial velocity, with a negative sign in the result because the velocity is decreasing, if starting velocity, final velocity, and time taken are given.
velocity of car = 30 m/s
car need to stop in 50m
Deceleration a = v^2 – u^2 / 2s
= 0^2 - 50^2 / 2*30
= 11.56
Deceleration of the care = 11.56 ms−2
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a cat, also of weight wa , falls asleep on top of block a. if block b is now set into downward motion, what is the magnitude of its acceleration?
Answers
The magnitude of its acceleration is a= g ([tex]W_{B}[/tex])/( 2[tex]W_{A}[/tex] +[tex]W_{B}[/tex] )
What is meant by magnitude of acceleration?The length of the vector is all there is to an acceleration's magnitude. To put it another way, writing the magnitude of acceleration indicates how quickly velocity varies. In the standard international (SI) system, the acceleration is measured in units of meters per second square.
Let T be the rope's tension, assuming it has no mass.
T =( 2[tex]W_{A}[/tex])a/g ------- 1
([tex]W_{B}[/tex]) - T = ([tex]W_{B}\\[/tex])a/g ------- 2
Add 1 and 2
[tex]W_{B}[/tex] =(a/g)( 2[tex]W_{A}[/tex]+ [tex]W_{B}[/tex])
a= g ([tex]W_{B}[/tex])/( 2[tex]W_{A}[/tex] +[tex]W_{B}[/tex] ).
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A source vibrating at constant frequency generates a sinusoidal wave on a string under constant tension. If the power delivered to the string is quadrupled, by what factor does the amplitude change?.
Answers
If the power is quadrupled, The amplitude changes by factor of 2 means double.
What is meant by Amplitude?The greatest displacement or distance moved by a point on a vibrating body or wave from its equilibrium position. It is one-half of the length of the vibration path.
Given,
If the amount of power applied to the string is quadrupled.
The power transmitted by a sinusoidal wave on a stretched string formula is,
P=[tex]1/2[/tex](μω²A²v)
Where μ mass per unit length
ω=angular speed
A= amplitude
v=wave speed
P=power delivered.
We only need two terms in this case: power and amplitude.
P∝ A²
For our problem, all other quantities are constant.,
A= k √P
Where k= constant
Power is quadrupled here, which means four times.,
A=√4P
A=2√P
Changing the amplitude by a factor of two means doubling.
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A 440 hz tuning fork is used with a resonting colum to detemine the velocity of sound in helium gas . if the spacing between resonances in 110cm , what is the velocity of sound in helium gas?
Answers
The velocity of sound in helium gas is 968 m/s if the spacing between resonances is 110cm.
We have to go from antinode to antinode. In an air column, the spacing between resonance is wavelength /2 as we have to go from antinode to antinode.
wavelength = 220 cm = 2.2m
As we know the velocity formula
Then Velocity = f * λ
Where f is the frequency and λ is the wavelength.
So Velocity of wave = 440 * 2.2 = 968m/s
Hence, the velocity of sound in helium gas is 968 m/s if the spacing between resonances is 110cm.
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how would stellar parallax observed from saturn differ from the stellar parallax we observe from earth?
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Saturn is undergoing an apparent retrograde movement period as the Earth moves closer to Saturn in its orbit and then both planets are located on the side of the Sun. Stars that are nearer to us will exhibit higher parallax, similar to how it occurs on Earth.
The star parallax of the Earth is quite modest, barely 0.03 seconds of arc. It would be difficult to see against the backdrop of stars, even with a good telescope.
The angle between the Earth's place at a single time of year and the Earth 6 months later, as determined from a nearby star, is known as the parallax angle. This angle is used by astronomers to calculate how far away that star is from Earth.
We may calculate the distance to a nearby planet using the method described before, s. Now, measuring from an observation point O, we determine the angle the planet occupies, which is. Therefore, P1P2=d, where d is the planet's diameter. As a result, we may use the parallax method to calculate the radius of a neighboring planet.
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at its peak, a tornado is 64.0 m in diameter and carries 100 km/h winds. what is its angular velocity in revolutions per second?
Answers
The angular velocity of tornado Which having 64m diameter and having velocity of 100 km/h is 0.138 revolutions per second.
How to calculate angular velocity ?A pseudovector that depicts the rate at which the angular position or orientation of an object varies over time is called an angular velocity or rotational velocity.The pseudovector's direction is normal to the instantaneous plane of rotation or angular displacement, and its magnitude corresponds to the object's angular speed, or the rate at which it rotates or revolves. The right-hand rule is typically used to specify the direction of angular motion.Generally speaking, angular velocity has an angle per unit time dimension. Since the radian is a dimensionless quantity and the SI unit of angular velocity is radians per second, the SI units of angular velocity can be written as s−1. Omega is a common way to represent angular velocity. According to convention, a positive angular velocity denotes a rotation that is counterclockwise and a negative one is clockwise.Angular velocity ω=v/r
Where v is linear velocity
r = radius of circle
ω = 100/32
= 8.29 rpm
Convert to revolutions per second
= 0.138 revolutions per second.
Angular velocity of tornado is 0.138 rps.
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4. [4 pts] to decrease the magnitude of current induced in the inductor using a bar magnet, you could (select all that apply): a. decrease the strength of the magnet. b. increase the velocity of the magnet going into the solenoid. c. decrease the number of coils in the solenoid. d. decrease the cross sectional area of the solenoid.
Answers
Option A,C It decrease the strength of the magnet and also decrease the number of coils in the solenoid.
A device called a solenoid is made up of a casing, a coil of wire, and a moving plunger (armature). A magnetic field develops around the coil when an electrical current is injected, drawing the plunger in. A solenoid, put more plainly, changes electrical energy into mechanical work.
Copper wire is twisted tightly in a coil that has several turns. The creation of a powerful magnetic field or flux occurs when an electrical current runs through this wire.
The coil is enclosed in a housing, which is often composed of steel or iron, which concentrates the magnetic field it produces.
The magnetic field's concentration, which provides the mechanical force needed to perform the action, draws the plunger to the stop.
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x. a 0.015-kg marble moving to the right at 0.40 m/s has a head-on, elastic collision with a 0.045-kg marble sitting at rest on a smooth, level surface. a) what are the magnitudes and directions of the velocities of the two marbles after the collision? b) show that the ke is conserved.
Answers
The magnitudes and directions of the velocities of the two marbles after the collision is: v1f is left and v2f is right.
What is collision?The initial marble weighs m1 = 0.015 kg.
Second marble's mass is m2=0.045kg.
The first marble's initial velocity is v1i=0.40m/8 before to contact.
The second marble's initial velocity is v2i=0m/8 prior to impact.
After the impact, the first marble's final speed is v1f.
Following the collision, the initial marble's final velocity is v2f.
If the collision is elastic, the kinetic energy is preserved.
We'll write 1/2 m1 for KE = 1/2 mv2 (v1i)
2 + 1/2 m2(vi) (vi)
2 = 1/2 m1(v1f)2 + 1/2 m2 (v2f) (v2f)
2.
Using this equation, we can establish a new relationship between velocities and determine each marble's post-collision velocity:
v1f=(m1-m2)/(m1+m2)
v1\sv1f=(0.015kg-0.045kg)/(0.015kg+0.045kg)
0.40m/s\s=-0.20m/s
First marble is moving leftward at 0.20 m/s, as indicated by the negative sign.
Find the second marble's final velocity.
v2f=2m1v1/(m1+m2)\s
v2f=2⋅0.015kg⋅0.40m/s/(0.015kg+0.045kg)\s
v2f=0.20
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a 1,200 kg car can accelerate with a force of 3,000n. if the car is stopped at a red light and then accelerates for 15 s after the light turns green, how far (in m) will the car be from the light?
Answers
Acceleration: the rate at which the speed and direction of a moving object vary over time.A point or object going straight ahead is accelerated when it accelerates or decelerates.
Find the Acceleration ?Three different accelerated motion types exist: average acceleration, non-uniform acceleration, and uniform acceleration.
a = F / m
1 N = 1 kg•m/s²
F = ma; where F = force in newtons (N), m = mass in kg, and a = acceleration in m/s².
Known and Unknown
F = 3000 N = 3000kg•m/s²
m = 1200 kg
a = F/m
a = (3000 kg•m/s²)/(1200 kg)
Kilograms cancel.a = 2.5m/s²
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If two vehicles approach an uncontrolled intersection at about the same time, who must yield?.
Answers
If two vehicles approach an uncontrolled intersection at about the same time the driver of the vehicle on the left shall yield the right-of-way to the vehicle on the right.
A driver proceeding through an uncontrolled intersection must yield to a vehicle to their right, as that vehicle has the right of way even though the two vehicles arrived at the same time.
At an uncontrolled intersection, the Vehicle A driver must yield to traffic on its right and proceed with caution only when it is safe to do so. Therefore, they would be found 100% responsible.
Therefore when two vehicles approach an uncontrolled intersection on the same side then the vehicle on the left shall yield the right-of-way to the vehicle on the right.
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A coaxial cable consists of alternating coaxial cylinders of conducting and insulating material. Coaxial cabling is the primary type of cabling used by the cable television industry and is also widely used for computer networks such as Ethernet, on account of its superior ability to transmit large volumes of electrical signal with minimum distortion. Like all other kinds of cables, however, coaxial cables also have some self-inductance that has undesirable effects, such as producing some distortion and heating
Answers
Coaxial cable may experience unpleasant interference from electrical wires. Therefore, even if the cables are divided by wood or other building materials, keep coax wires at least 6 inches away from electrical cables.
Explain about the Coaxial cables?A form of copper cable known as coaxial cable is designed to prevent signal interference by using a metal shield and other parts. It is generally utilized by cable TV providers to link their satellite antenna facilities to client residences and establishments.
The same coaxial cable network that delivers cable television and internet to your house is used for both services. First, your internet service provider sends a data signal to your modem via the coaxial cable, also known as coax, inside your home.
You will need a coaxial cable connected to your TV if you want to watch live TV through a provider like Free view or Free sat.
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the spectrum of a very distant galaxy shows features due to carbon, silicon, and sulfur. the presence of these elements in the spectrum tells astronomers that
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The spectrum of a very distant galaxy shows features due to carbon, silicon, and sulfur. the presence of these elements in the spectrum tells astronomers that the galaxy must have had an entire generation of stars that was born, lived, and died.
Absorption lines, not emission lines, were discovered in investigations of the Sun's spectrum (dark lines against the brighter continuum). Until Gustav Kirchhoff revealed in 1859 that the same substance can either create emission lines (when a hot gas emits its own light) or absorption lines, the precise origin of these "Fraunhofer lines," as we now refer to them, was unknown for a long time (when a light from a brighter, and usually hotter, source is shone through it). With that finding, spectroscopy became a viable method for analyzing the chemical makeup of stars.
Chemical elements can be found in other things besides stars. We can search for the signatures of elements in any spectrum from any object. Nebula and supernova leftovers are among.
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if an alpha particle (2 protons) experiences an electric force of 0.250 n at a point in space, what electric force would a proton experience at the same point?
Answers
electric force would a proton experience at the same point is .156 × 10⁻¹⁹ N/C.
Electric field :
The electric field is the amount of electric force per charge, and the electric force on a charge at a given point in space is the amount of charge multiplied by the electric field at that location.
E = F/q
where,
E = electric field
F = force
q = charge
A force experienced by an alpha particle = 0.250N
E = F/q
E = 0.250 /1.6 × 10⁻¹⁹
E = 0.156 × 10⁻¹⁹ N/C
electric force would a proton experience at the same point is .156 × 10⁻¹⁹ N/C.
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the picture tube in a television uses magnetic deflection coils rather than electric deflection plates. suppose an electron beam is accelerated through a 55.0 -kv potential difference and then through a region of uniform magnetic field 1.00 cm wide. the screen is located 6.0 cm from the center of the coils and is 60.0 cm wide. when the field is turned off, the electron beam hits the center of the screen. what field magnitude is necessary to deflect the beam to the side of the screen? ignore relativistic corrections.
Answers
The field magnitude required to divert the beam away from the screen is 3.1588 × [tex]10^{-4}[/tex].
A magnetic force is applied to a charged particle when it enters a magnetic field. This force's strength is determined by the particle's speed, magnetic field, and charge density. Fleming's Left Hand Rule determines the force's direction. The component of the velocity transverse to the magnetic field provides the required centripetal force if the charged object arrives at an angle.
V = 55.0 kV
d = 1.00cm
Tan∅ = ((1 ÷ 2) × 60) ÷ 6.0 = 5
∅ = 26.6°
Sin∅ = 1 ÷ R
R = 1 ÷ Sin(26.6°)
R = 1 ÷ 0.44
R = 2.27
Total work completed equals Kinectic Energy change
1 ÷ 2 mv² = qΔV
0.5 × 9.1 × [tex]10^{-31}[/tex] × v² = 1.6 × [tex]10^{-19}[/tex] × 55.0 × [tex]10^{3}[/tex]
v² = (8.8 × [tex]10^{-15}[/tex]) ÷ (4.55 × [tex]10^{-31}[/tex])
v² = 1.93 × [tex]10^{16}[/tex]
v = √1.93 × [tex]10^{16}[/tex]
v = 138924439
v = 1.3 × [tex]10^8[/tex]
The magnetic force produces the centripetal force.
qvB = mv² ÷ R
B = (mv ÷ qR)
B = (9.1 × [tex]10^{-31}[/tex] × 1.3 × [tex]10^8[/tex]) ÷ (1.6 × [tex]10^{-19}[/tex] × 2.27)
B = (11.83 × [tex]10^{-23}[/tex]) ÷ (3.745 × [tex]10^{-19}[/tex])
B = 3.1588 × [tex]10^{-4}[/tex]
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Question 1 of 10
What type of diagram is used to show all of the forces acting on an object?
A. Stability diagram
B. Algebraic diagram
C. Free-body diagram
D. Potential energy diagram
Answers
Answer:
c. Free body diagram
Explanation:
Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces acting upon an object in a given situation.
What is the velocity of a 1.2 kg ball rolling with a momentum of 15.6 kg m/s?
Answers
Answer:
Velocity V = 13 m/s
Explanation:
Given:
m = 1.2 kg
p = 15.6 kg·m/s
__________
V - ?
Momentum:
p = m·V
Velocity:
V =p /m = 15.6 / 1.2 ≈ 13 m/s
a car, initially moving with some initial velocity, accelerates until its momentum has increased by a factor of 2.39. by what factor has its kinetic energy increased?
Answers
Since the kinetic energy equation squares velocity, velocity increases have exponential effects: while doubling an object's mass doubles its kinetic energy, doubling its velocity quadruples it!
Definition and examples of kinetic energyThe energy of motion, or kinetic energy, is manifested in the motion of a particle, an object, or a group of particles. Kinetic energy is used by any moving thing, including people moving, baseballs being thrown, table crumbs falling, and charged particles in electric fields.
What 3 types od kinetic energy are there?Kinetic energy is divided into three subtypes: vibrational, rotational, or translational. Unsurprisingly, items that vibrate produce vibrational kinetic energy. Moving objects generate rotational kinetic energy, whereas object collisions generate translational kinetic energy.
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It is typical for people in hypnotic trances to temporarily __________. a. begin speaking languages they do not know b. lose track of their immediate surroundings c. become aware of past lives and buried memories d. feel completely paralyzed and unable to act please select the best answer from the choices provided a b c d
Answers
It is typical for people in hypnotic trances to temporarily begin speaking languages they do not know .
Option a is correct
Who are people when they are hypnotized?Although hypnosis is frequently described as a sleep-like condition, it is actually better described as a state of sharpened focus, increased suggestibility, and vivid fantasies. People who are hypnotized frequently appear tired and disoriented, yet they are actually hyperaware.
What transpires while a person is tranced?Our brain waves must slow down in order to enter a trance. Throughout the course of the day, people alternate between several brain wave states. Different stages of the brain wave include sleeping, daydreaming, and being fully alert and focused.
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a bullet fired from a rifle begins to fall when?
Answers
Answer: As soon as it leaves the barrel.
Explanation:
A bullet fired from a rifle begins to fall immediately upon leaving the barrel. Despite its initial forward momentum, the bullet is subject to the force of gravity.
The gravitational force acts vertically downward and causes the bullet to accelerate downward due to its free fall. However, due to its initial high velocity, the bullet's downward acceleration is minimal compared to its forward motion. As a result, the bullet follows a curved trajectory known as a ballistic trajectory.
Over time, the effects of gravity become more significant, causing the bullet to gradually descend and eventually hit the ground, following a parabolic path.
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Mars has an orbital period of 4333 earth days, find the semi major axis of it's orbit
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Answer:372
Explanation:
what is the final velocity (in m/s) of a hoop that rolls without slipping down a 5.00-m-high hill, starting from rest?
Answers
The final velocity (in m/s) of a hoop that rolls without slipping down a 5.00-m-high hill, starting from rest will be 31.30 m/s
given
initial velocity = 0
displacement = s = 50 m
using kinematics equation
2as = [tex]v^{2} - u^{2}[/tex]
2* (g) * s = [tex]v^{2}[/tex] - 0
[tex]v^{2}[/tex] = 2 * (9.8) * 50
v = 31.30 m/s
The final velocity will be v = 31.30 m/s
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A ball rolls down a ramp for 5 seconds. If the ball started with no speed and ended with a speed of 15 m/s, what was the acceleration of the ball?
Answers
Answer:
3 m/s^2
Explanation:
Acceleration = change in speed / change i time
= 15 m/s / 5 s = 3 m/s^2
