Answer:
K=50N/cm
Explanation:
Force can be calculated using below expresion;
F=ke
where f = force,
k =spring constant,
e = extension
force = 500 N
e= 10 cm =
Then substitute, the given values
500=10 × k
k=500/10
K=50N/cm
A rubber band has a spring constant of 45 N/m. A classmate stretches it a length of 0.2 m before firing it at Mr. C. Ouch. Calculate the elastic
potential energy of the rubber band.
Answer:
0.9 JoulesExplanation:
Elastic potential energy of a spring= 1/2 × Spring constant × displacement²
following calculations you will get ur answer!!
what is the rate of acceleration of a 2,000-kilogram truck if a force of 4,300 N is used to make it start moving forward
you walk 12 meters north, then 10 meters west. What is your displacement
Answer:
Your displacement is 15.62m NW
Explanation:
We can use the Phytagorean theorem to determine the displacement:
a^2+b^2=c^2
12^2+10^2=c^2
144+100=c^2
244=c^2
15.62=c
So your displacement is 15.62m NW
Why would a person who weights 100 lbs. on earth weight significantly More on Jupiter?
A. Jupiter has more gravitational force then earth
B.Jupiter is farther away from sun
C.Jupiter has no atmosphere
Im pretty sure the answer is A)
Which organelle captures sunlight and helps in food synthesis?
Chloroplast
Mitochondrion
Nucleus
Ribosome
Answer: Chloroplast
Explanation: Chloroplasts work to convert the Sun's light energy into sugars that cells can use. It's like a solar panel that converts energy from sunlight into electric power.
The cadmium in the control rods slows down a nuclear fission reaction by absorbing neutrons.
Please select the best answer from the choices provided
T
F
answer:
true
explanation:
cadmium is used during controlled reaction to produce energycredits: https://brainly.in/question/6969690Answer:
True!
Explanation:
cadmium is being used during controlled reaction which creates the energy!
I took this test! :3
Can someone give me ideas to improve hearing aids in medical sector to help deaf people
Answer:
yeah sure they should have a guaranty and should be water proof
If you increase the volume of a sound wave, what else will change?
A) Pitch
B) Elasticity
C) Frequency
D) Amplitude
Answer:
A
Explanation:
Was Michael Jean Cazabon a local or regional artist?
Answer:
artist
Explanation:
3. What is the force acting on an object with a mass of 50kg and an acceleration of
10m/s2?
I
Answer:
500 Newtons
Explanation:
50 kg x 10 m/s squared
In an experiment in which molten naphthalene is allowed to cool, the cooling curve shown below was obtained, the temperature 80∘C is known as
A. cooling temperature
B. boiling point
C. melting point
D. vaporization point
Answer:
pa heart follow back follow pa brainliest narin po if my answer is correct for you THANK
Explanation:
In an experiment in which molten naphthalene is allowed to cool, the cooling cur...
Question
In an experiment in which molten naphthalene is allowed to cool, the cooling curve in fig 5 was obtained, the temperature
80
∘
C.is known as
Options
A) cooling temperature
B) boiling point
C) melting point √√√√√√√√√√※※※ ↑↑ANSWER
D) vaporization point
What is the difference between a scalar and a vector?
Answer:
Vector has magnitude and direction, scalar only has magnitude.
Answer:
A quantity that has magnitude but no particular direction is described as scalar. A quantity that has magnitude and acts in a particular direction is described as vector
A meter rule balance on a knife headge at the 55cm mark wheb a mass of 40g from 995cm .find the mass of the meter rule.
Answer:
Let the weight of the ruler be X.
Now X acts in the middle, so we have 55-50 = 50cm
Since left hand movement= right hand movement
X(55-50)=90(95-55)
5X= 90×40
X=320cm
Hence the weight of the ruler is 320g
Explanation:
Which statement describes steps involved in the production of hydroelectric power?
A. Water falls down a pipe to generate electricity.
B. Potential energy of water is directly transformed into electrical energy.
C. Moving water turns a paddle wheel that helps generate electricity.
D. Falling water turns a turbine that helps generate electricity.
Please help would be greatly appreciated!!
Answer:
D. Falling water turns a turbine that helps generate electricity.
Explanation:
Here is the proof:
PLS ANSWER FAST WILL GIVE BRAINLY!!!!! BUT ONLY IF YOU KNOW
what happens outside of the nucleus?
Answer:
electrons
Explanation:
i think this is right
How many degrees are there between the direction of motion and the force of friction?
A. O
B. 270
C. 90
D. 180
The correct option is (d).
Angle should be 180° between the direction of force and the direction of motion of a body as work done is equal to force multiplied by displacement multiplied by cosx.
Friction is a force that opposes motion. When two objects are in contact, friction is acts in a direction opposite to the motion of the object.A force known as friction prevents relative motion between surfaces that are in touch. One of the more basic features of friction is that it always runs parallel to the surfaces with which it makes contact and opposes any motion or attempted motion of the systems with respect to one another.What is the direction of friction force?When a force is applied to stop it from moving, frictional force provides resistance. As a result, it always moves in the opposite direction of an item in motion. Friction acts on the right when force is applied to the left.Learn more about direction of friction force brainly.com/question/24322020
#SPJ2
Why is Speed and Kinetic Energy related ?
Answer:
Speed affects the amount of kinetic energy an object has
Explanation:
Kinetic energy is the energy of motion therefore, it can be affected by speed
I know the answer but what type of energy is this.
Answer:
Elastic potential energy
Explanation:
Answer:
elastic energy
Explanation:
A rectangular container of base 50 cm by 30 cm is filled with water to a
depth of 5 cm. How much is the pressure exerted at the base?
(Take pw= 1000 kg/m and g =10 m/s?)
Answer:
please find attached pdf
Explanation:
Given values are:
Height,
5 cm or, 0.05 mBase of container,
50 cmThe pressure exerted will be:
→ [tex]P = hdg[/tex]
By substituting the values, we get
[tex]= 0.05\times 1000\times 10[/tex]
[tex]= 500 \ Nm[/tex]
Thus the above answer is correct.
Learn more about pressure here:
https://brainly.com/question/26018692
I need help with this problem on science 8th grade here is the picture of the assignment place help me
Answer:
the first one is D
Explanation:
so if the others u put are right the the second would be c
A 14-gauge copper wire of diameter 1.628 mm carries a current of 12.5 What is the potential difference across a 2.00 - m length of the wire? *p=1.47x10^-8
Answer:
[tex]V=1.76\times 10^{-4}\ V[/tex]
Explanation:
Given that,
The diameter of a wire, d = 1.628 mm
Radius, r = 0.814 mm = 0.000814m
Current, I = 12.5 mA
The length of the wire, l = 2m
The resistivity of the wire, [tex]\rho=1.47\times 10^{-8}\ \Omega-m[/tex]
We need to find the potential difference across the wire. We know that the resistance of the wire is given by :
[tex]R=\rho\dfrac{l}{A}[/tex]
Also, V = IR
[tex]\dfrac{V}{I}=\rho\dfrac{l}{A}\\\\V=\dfrac{\rho l I}{A}\\\\V=\dfrac{1.47\times 10^{-8}\times 2\times 12.5\times 10^{-3}}{\pi \times (0.000814)^2}\\\\V=1.76\times 10^{-4}\ V[/tex]
So, the potential difference of the wire is [tex]1.76\times 10^{-4}\ V[/tex].
circle the best answer on the line provided.
i. If an object starts to accelerate,
a. a balanced force is acting on it
b. gravity is acting on it
c. velocity is acting on it
d. an unbalanced force is acting on it
Plsss asap ill mark branliest
How long does it take a 100 kg rocket to increase speed from 10
m/s to 200 m/s with a force of 250N?
Answer:
76 seconds
Explanation:
Using the formula t=vf-vo/a, where t=time, vf= final velocity, v0= initial velocity, and a= acceleration, we can solve for your problem.
Plug in known variables...
t=200-10/a
we can solve for a by using the formula F=ma where f=force, m= mass, and a=acceleration and rearranging it to solve for a.
a=F/m
Plug in known variables...
a=250N/100kg
a=2.5m/s^2
Plug in our newly found acceleration of 2.5 m/s^2 into our first equation and solve....
t=190/2.5
t=76 seconds
Which characteristic is used to measure the amount of light radiated by a star?
A.size
B.color
C.luminosity
D.temperature
True or False: Speed is a vector quantity.
Answer:
it's false coz
Speed is a scalar quantity.
A free body diagram represents all of the following except:
a)the object
b)forces as vectors
c)forces exerted by the object
d)forces exerted on the object
Answer:
c
Explanation:
A free body diagram doesn't show forces exerted by the object.
A free body diagram represents all the given choices except the one which is "forces exerted by the object"
Diagrams that represent the approximate magnitude as well as the direction of all pressures exerted on either an item throughout a particular condition.Drawing such a free-body schematic or the model seems to be a key step towards pattern recognition throughout mechanical because it allows you to see every one of the influences operating on a particular element.
Thus the above answer is right.
Learn more:
https://brainly.com/question/13191643
An impulse of 12.2kg m/s is delivered to an object whose initial momentum is 4.5kgm/s. What is the object's final momentum?
Answer:
Object's final momentum = 16.7 kg-m/s
Explanation:
Given that,
Impulse, J = 12.2 kg-m/s
Initial momentum, [tex]P_i=4.5\ kg-m/s[/tex]
We need to find the object's final momentum. We know that the impulse is equal to the change in momentum. So,
Impulse = change in momentum
[tex]J=P_f-P_i\\\\P_f=J+P_i\\\\P_f=12.2+4.5\\\\P_f=16.7\ kg-m/s[/tex]
So, the object's final momentum is 16.7 kg-m/s.
Given:
Impulse, [tex]J = 12.2 kg-m/s[/tex]Initial momentum, [tex]P_i = 4.5 \ kg-m/s[/tex]We know the relation,
→ [tex]Impulse = Change \ in \ momentum[/tex]
or,
→ [tex]J = P_f-P_i[/tex]
then,
→ [tex]P_f = J+P_i[/tex]
By substituting the values,
[tex]= 12.2+4.5[/tex]
[tex]= 16.7 \ kg-m/s[/tex]
Thus the above answer is right.
Learn more about momentum here:
https://brainly.com/question/18551770
7. Which best describes the energy change th pushes a large rock down a hill?
A: sound energy kinetic energy
B:, potential energy kinetic energy
C: kinetic energy mechanical energy
D: mechanical energy sound energy
Answer:
B
Explanation:
Gravitational Energy is the energy of position or place. A rock resting at the top of a hill contains gravitational Potential energy. Hydropower, such as water in a reservoir behind a dam, is an example of gravitational potential energy.
The acceleration of the object may be zero and the velocity of the object may not be equal to zero
Sure. That's true when ANY object is moving in a straight line at a steady speed.
A gas at 8.4 atm has a volume of 1.9 L. What volume would the gas have at 8.3 atm?
Answer:
the final volume of the gas is 1.923 L.
Explanation:
Given;
initial pressure, P₁ = 8.4 atm
initial volume of the gas, V₁ = 1.9 L
final pressure of the gas, P₂ = 8.3 atm
The final volume of the gas is calculated by applying Boyle's law as follows;
P₁V₁ = P₂V₂
V₂ = P₁V₁ / P₂
V₂ = (8.4 x 1.9) / 8.3
V₂ = 1.923 L
Therefore, the final volume of the gas is 1.923 L.