A hanging 7.5 kg object stretches a spring 1.1 m, the spring constant of the spring is approximately 66.82 N/m.
Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement of the spring from its equilibrium position, can be used to compute the spring constant.
F = -k * x
Here, we have:
mass (m) = 7.5 kg,
displacement (x) = 1.1 m,
acceleration due to gravity (g) = 9.8 m/[tex]s^2[/tex].
We know that:
weight (W) = mass * acceleration due to gravity
So,
W = m * g
W = 7.5 kg * 9.8 m/[tex]s^2[/tex]
W = 73.5 N
F = W = 73.5 N
F = -k * x
73.5 N = -k * 1.1 m
Solving for k:
k = -73.5 N / 1.1 m
k ≈ 66.82 N/m
Thus, the spring constant of the spring is approximately 66.82 N/m.
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How does convection play a role in ocean currents?
Which best explains why a storm that affects an area in the western United States may affect an area in the eastern
United States a few days later?
The jet stream winds blow storms from east to west.
The jet stream winds blow storms from west to east.
C Cool Gulf Stream water causes storms to form in the east
D Warm Gulf Stream water causes storms to form in the west.
I really need help, pls hurry I’m timed
1) A plane whose airspeed is 220 km/h heads due
north. It suddenly encounters a 150 km/h cross wind
blowing due east. What is the resulting velocity of
the plane with respect to the ground?
Answer:
=(220^2 +150^2)
/
put this on a square root
for you to get 266.2705391
round it to a whole number =266km/h
Explanation:
p
how does displacement, acceleration, time, and velocity affect motion?
Answer:
The relation between velocity and time is a simple one during uniformly accelerated, straight-line motion. The longer the acceleration, the greater the change in velocity. Change in velocity is directly proportional to time when acceleration is constant.
~Hoped this helped~
~Brainiliest?~
Answer:
We describe motion in terms of velocity and acceleration. Velocity: The rate of change of displacement of an object (displacement over elapsed time) is velocity. Velocity is a vector since it has both magnitude (called speed) and direction. ... Acceleration: The rate of change of velocity is acceleration.
Explanation:
Displacement is a vector which points from the initial position of an object to its final position. ... Instantaneous velocity, on the other hand, describes the motion of a body at one particular moment in time. Acceleration is a vector which shows the direction and magnitude of changes in velocity.
Displacement is the vector difference between the ending and starting positions of an object. Velocity is the rate at which displacement changes with time. ... The average velocity over some interval is the total displacement during that interval, divided by the time.
Hope this helps :)
A
is done by lifting the ball without prior swing of the leg.
A. Dodge
B. Kick
C. Scoop
D. Remove up
I’ll give brainless
you can swing your leg so it can't be kick, and remove up doesn't make sense and dodging it won't get you anywhere, so scooping it
what does the gravitational attraction between earth and an object depend on
Answer:
the force of gravity acting between the earth and any other object is directly proportional to the mass of the earth, directly proportional to the mass of the object, and inversely proportional to the square of the distance that separates the centers of the earth and the object.
Explanation:
What is the coefficient for Magnesium Chloride?
Answer:
Magnesium Chloride =MgCl 2
Explanation:
Hope I helped✌
A 5.00 kg block of metal with
c = 650 J/(kg*C) at 80.0 °C comes
in contact with a 1.25 kg glass
block at 20.0 °C. They come to
equilibrium at 63.9 °C. What is the
specific heat of the glass?
Answer:
953.5 J/kg.°C
Explanation:
From the question,
Heat lost by the metal = heat gained by the glass.
cm(t₁-t₃) = c'm'(t₃-t₂)................. Equation 1
Where c = specific heat capacity of the metal, m = mass of the metal, c' = specific heat capacity of the glass, m' = mass of the glass, t₁ = initial temperature of metal, t₂ = initial temperature of glass, t₃ = Equilibrium temperature
Make c' the subject of the equation
c' = cm(t₁-t₃)/m'(t₃-t₂)................ Equation 2
Given: m = 5 kg, c = 650 J/kg.°C, m' = 1.25 kg, t₁ = 80 °C, t₂ = 20 °C, t₃ = 63.9 °C
Substitute these values into equation 2
c' = 5×650(80-63.9)/1.25(63.9-20)
c' = (5×650×16.1)/(1.25×43.9)
c' = 52325/54.875
c' = 953.5 J/kg.°C
Answer:
960 J/(kg*C)
Explanation:
i got this right in acellus trust me :D
Please help me In this question
Answer:
50 N
Explanation:
We are given;
Force on larger piston; F2 = 5000 N
Ratio of diameter of smaller piston to larger piston = 1:10
Now, formula for force on smaller piston which we will denote with F1 is gotten from;
F1 = F2 × A1/A2
Now, A1 = π(d1)²/2
A2 = π(d2)²/2
Thus:
F1 = F2 × (π(d1)²/2)/(π(d2)²/2)
This gives;
F1 = F2 × (d1/d2)²
Plugging in the relevant values;
F1 = 5000 × (1/10)²
F1 = 50 N
Two cars approaching each other , first car moves at 72 km/h ,the second car moves at 90 km/h,the first car started its siren with a frequency of 650 Hz. If the speed of the sound is 350 m/s, then what is the frequency of the sound heard by the driver of the second car from the police car?
Answer:
Because the speed of sound travels at +- 1300 km/h and the car that is approaching isn't that fast. So u first hear the sound before the car reaches u.
i hope it helps
Explanation:
The man rolls the cupboard at a steady speed from the lorry to the house. The friction force in the wheels is 40 N. State the force with which the man has to push.
Answer:
40N
Explanation:
Using the newton's second law of motion
\sum Fx = max
Fm - Ff = max
Fm is the applied force
Ff is the frictional force
m is the mas of the cupboard
ax is the acceleration
Since the speed from the lorry is steady, ax = 0m/s^2
Also Ff = 40N
Substitute into the formula;
Fm - 40 = m(0)
Fm - 40 = 0
Add 40 to both sides
Fm - 40 + 40 = 0 + 40
Fm = 40N
Hence the force with which the man applied to push is 40N
What does the change in momentum and impulse have in common?
Answer:
Momentum is a vector quantity that has the same direction as the velocity of the object. The quantity of force multiplied by the time it is applied is called impulse. Impulse is a vector quantity that has the same direction as the force. Momentum and impulse have the same units: kg·m/s
Explanation:
Hope it helps!
If you dont mind can you please mark me as brainlest?
Which statement is the best interpretation of the ray diagram shown below?
A. A concave lens forming a larger, virtual image
B. A concave lens forming a larger, real image
C. A concave mirror forming a larger, virtual image
O D. A concave mirror forming a larger, real image
Answer:
a concave lens forms a smaller, real image. { a p e x :)) }
Explanation:
hey, friend! this is the answer, but make sure that, next time, you include the diagram to make it easier for us to help you, okay?
A concave lens forming a larger real or virtual image and Concave mirrors form both real and virtual images. therefore all statements are correct. Therefore these can be interpreted by using Ray diagram.
What is Ray diagram ?A ray diagram is a diagram that shows path taken by light in order to see a point on the image of an object. Ray diagram uses lines with arrows to show reflected and incident ray.
A concave lens is a lens that diverges a straight light beam from the source to a diminished, upright, virtual image. It can form both real and virtual images. concave lens has curve on both side. The lens having only one side plane and other is curved inside, the les is called as planoconcave lens.
Concave mirror can form both virtual and real image that depends on the distance between the mirror and object. We get virtual and magnified image When the object is placed very close to the mirror. when distance between the object and mirror is increased, image gets diminished and real.
Both concave lens and mirror form both real and virtual images that's depend on the distance.
Hence all statements are correct.
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The observation that energy transformations are rarely 100% efficient is seen by scientists as a violation of the Law of Conservation of Energy.
true or false ???
Answer:
l
Explanation:
Answer:
true I believe
Explanation:
A projectile is fored vertically upward with an initial velocity of 190 m/s. Find the maximum height of the projectile.
Answer:
3683.67 m
Explanation:
Formula for maximum height of projectile is given by the equation;
h = u²/2g
Where u is initial velocity and g is acceleration due to gravity
We are given u = 190 m/s
Thus;
h = 190²/9.8
h = 36100/9.8
h = 3683.67 m
A student wants to design an investigation to determine if an object contains potential energy. What are some questions the student could ask to determine if the object contains potential energy?
Does the object have kinetic energy?
Does the object move when it is released from a rest position?
Does work have to be done to hold the object in place?
Does a force act on the object?
Answer:
does work have to be done to hold the object in place
Answer:
Does the object move when it is released from a rest position? and Does a force act on the object?
Explanation:
i had the same quiz today and the other 2 are wrong
Una niña juega a saltar con la cuerda, realizando 40 saltos en un minuto. ¿Cuál de los siguientes conceptos se asocia de mejor manera con lo descrito en la situación?
Answer:
he angular velocity w = 4.19 rad / s
Explanation:
The girl is synchronized with the movement of the rope, therefore we can describe the movement of the girl with the angular velocity
w = θ/t
if we fear 40 jumps and each one is a revolution
θ = 40 2pi = 80π radiation
t = 1 min = 60 s
w = 80π / 60
w = 4.19 rad / s
this must be the same angular velocity of the rope
Why concave lens is called diverging lens
When a parallel beam of light passes through a convex lens, the rays become farther from one another when the come out. This process of rays is called ''to diverge''. The concave lens makes rays of light diverge, so it is called diverging lens.
The speed of light in amber is
1.94*10^8 m/s. What is the index
of refraction for amber?
(No unit)
Answer:
1.55
Explanation:
that it is the standard refractive index.
PLEASE HELP!!
16. Carol views a specimen under the microscope and notices that it has no nucleus. What
must she be looking at?
A. Animal cell
B. Plant cell
C. Bacteria
D. Protist
Answer:
C. Bacteria
Explanation:
Bacteria and archaea are the two domains which consist of organisms with prokaryotic cells. Prokaryotic cells are cells without nuclei or membrane-bound organelles.
Point charges q1 and q2 are separated by a distance of 60 cm along a horizontal axis.
The magnitude of q1 is 3 times the magnitude of q2. At which point a on the axis is the
electric field zero?
NEED ANSWERS NOW
Answer:
38 cm from q1(right)
Explanation:
Given, q1 = 3q2 , r = 60cm = 0.6 m
Let that point be situated at a distance of 'x' m from q1.
Electric field must be same from both sides to be in equilibrium(where EF is 0).
=> k q1/x² = k q2/(0.6 - x)²
=> q1(0.6 - x)² = q2(x)²
=> 3q2(0.6 - x)² = q2(x)²
=> 3(0.6 - x)² = x²
=> √3(0.6 - x) = ± x
=> 0.6√3 = x(1 + √3)
=> 1.03/2.73 = x
≈ 0.38 m = 38 cm = x
Is monosodium an element or compound?give a reason
Answer; Sodium 2-Aminopentanedioate The chemical formula of MSG is C5H8NO4Na and its IUPAC name is sodium 2-aminopentanedioate. Since it is known to intensify meaty flavours in food, monosodium glutamate is widely used as a flavour enhancer in the food industry. This compound was first produced by the Japanese chemist Kikunae Ikeda in the year 1908.
Explanation:
PLEASE PLEASE HELP AND PUT A REAL ANSWER ;-;. ALSO WILL GIVE BRAINLEST!!
High pressure systems are found in the:
troposphere
stratosphere
mesosphere
thermosphere
Answer:
Troposphere
High-pressure areas form due to downward motion through the troposphere, the atmospheric layer where weather occurs.
Someone please help I’m so confused
Explanation:
the switch and the battery
what is the fullform of SMPS ?
A switched-mode power supply (switching-mode power supply, switch-mode power supply, switched power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently.
Answer:
A switched-mode power supply (switching-mode power supply, switch-mode power supply, switched power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently.
Explanation:
A car of mass 800 kg goes round a corner of radius 65 m at a
speed of 10 m/s
b) Suggest how this force is likely to be obtained.
Answer:
Centrifugal force = 1230.77 Newton.
Explanation:
The force associated with the car is generally referred to as centrifugal force and it can be calculated using the formula;
Centrifugal force = mv²/r
Given the following data;
Mass = 800kg
Radius = 65m
Velocity = 10m/s
To find the force;
Centrifugal force = (800*10²)/65
Centrifugal force = (800*100)/65
Centrifugal force = 80000/65
Centrifugal force = 1230.77 Newton.
Match the symbol of each element to its name :)
Answer:
H-Hydrogen
B-Boron
O-Oxygen
Au-Gold
Co-Cobolt
He-Helium
Na-Sodium
S-Sulfur
K-Potassium
Ag-Silver
Explanation:
Normally, chemical symbols are either the first letter or the first two letters of the element.
However, there are some exceptions where they use the Latin names e.g:
Aurum-Au-Gold
Natrium-Na-Sodium
Kalium-K-Potassium
Argentum-Ag-Silver
Hope this helps :)
A thin beam of light of wavelength 625 nm goes through a thin slit and falls on a screen 3.00 m past the slit. You observe that the first completely dark fringes occur on the screen at distances of ±8.24 mm from the central bright fringe, and that the central bright fringe has an intensity of 2.00 W/m² at its center. What is the intensity of the light at a point on the screen that is one-quarter of the away from the central bright fringe to the first dark fringe?
Answer:
I = 1.62 w/m^2
Explanation:
wavelength = 625 nm
position of screen = 3.00 m past the slit
Determine the intensity of the light
I = [tex]I_{0} ( sin\frac{\beta }{2 } /\frac{\beta }{2} )^2[/tex]
β = 2π*Dsin∅ / л
[tex]I_{0}[/tex] = 2
Attached below is the remaining part of the solution
What is the impulse (change in momentum) from a 2N force acting on an object for 2 seconds?
Answer:
Impulse = 4Ns
Explanation:
Given the following data;
Force = 2N
Time = 2 seconds
To find the impulse experienced by the object;
Impulse = force * time
Impulse = 2*2
Impulse = 4Ns
Therefore, the impulse experienced by the object is 4 Newton-seconds.
580 nm light shines on a double slit
with d = 0.000125 m. What is the
angle of the third dark interference
minimum (m = 3)?
(Remember, nano means 10-9.)
(Unit = deg)
Explanation:
Given that,
The wavelength of light = 580 nm
Slit separation, d = 0.000125 m
We need to find the angle of the third dark interference. For the dark fringe,
[tex]d\sin\theta=(m+\dfrac{1}{2})\lambda[/tex]
Put m = 3 and other values also.
[tex]d\sin\theta=(3+\dfrac{1}{2})\lambda\\\\d\sin\theta=\dfrac{7\lambda}{2}\\\\\sin\theta=\dfrac{7\lambda}{2d}\\\\\theta=\sin^{-1}(\dfrac{7\lambda}{2d})\\\\\theta=\sin^{-1}(\dfrac{7\times 580\times 10^{-9}}{2\times 0.000125 })\\\\\theta=0.93^\circ}[/tex]
So, the angle is 0.93°.
Answer: 0.665 deg
Explanation:
m=3
lambda= 580
d (converted to nanometers)= 125000
Using the equation of angle=arcsine of m-1/2 times lambda divided by d, filled in it would be arcsine of 3-1/2 times 580 over 125000.