Answers
Answer:
away from each other
Explanation:
Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges. The size of the force varies inversely as the square of the distance between the two charges.
Related Questions
If a car travels 200 meters in 10 seconds how fast is it going
Answers
Answer:
20 meters per second.
Explanation:
200/10
True or False: Speed is a vector quantity.
Answers
Answer:
it's false coz
Speed is a scalar quantity.
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.
Answers
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:
13 A lawn-mower is pushed with a force of 50 N.
If the angle between the handle of the mower
and the ground is 30°,
(i) Calculate the magnitude of the force that
is pressing the lawn-mower directly into
the ground.
(ii) Calculate the magnitude of the effective
force that moves the mower forward.
(iii) Why does the lawn-mower move forward
and not downward into the ground?
Answers
Answer:
13. (i) The magnitude of the force that is pressing the lawn-mower directly into the ground is 25 N
(ii) The magnitude of the effective force that moves the mower forward is approximately 43.3 N
(iii) Because there are no net downward force acting on the lawn-mower
Explanation:
13. The given force pushing the lawn-mower = 50 N
The angle at which the force acts = 30° to the ground
The component of the pushing force are;
(i) The magnitude of the force that is pressing the lawn-mower directly into the ground = The vertical component of the pushing force
The vertical component of the pushing force, [tex]F_y[/tex] = 50 N × sin(30°) = 25 N
∴ The magnitude of the force that is pressing the lawn-mower directly into the ground = [tex]F_y[/tex] = 25 N
(ii) The magnitude of the effective force that moves the mower forward = The horizontal component of the pushing force
The horizontal component of the pushing force, Fₓ = 50 N × cos(30°) = 25·√3 N ≈ 43.3 N
∴ The magnitude of the effective force that moves the mower forward = 25·√3 N ≈ 43.3 N
(iii) The lawn mower moves forward and not downwards because according to Newton's first Law of motion, the lawn-mower moves forward because it is being acted on by a net forward directed horizontal force
However, according to Newton's third law, the reaction of the ground is equal to the weight of the lawn mower, therefore, there are no net vertical force acting on the lawn-mower, such that the lawn-mower remains in the initial horizontal level and does not move downward into the ground.
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
Answers
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
Answers
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
Answers
Answer:
A
Explanation:
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
Answers
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
Why is Speed and Kinetic Energy related ?
Answers
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
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?
Answers
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
A gas at 8.4 atm has a volume of 1.9 L. What volume would the gas have at 8.3 atm?
Answers
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.
PLS ANSWER FAST WILL GIVE BRAINLY!!!!! BUT ONLY IF YOU KNOW
what happens outside of the nucleus?
Answers
Answer:
electrons
Explanation:
i think this is right
I need help with this problem on science 8th grade here is the picture of the assignment place help me
Answers
Answer:
the first one is D
Explanation:
so if the others u put are right the the second would be c
How many degrees are there between the direction of motion and the force of friction?
A. O
B. 270
C. 90
D. 180
Answers
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
you walk 12 meters north, then 10 meters west. What is your displacement
Answers
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
What is the impulse of a constant force of 50 newtons applied for 0.6 seconds
Answers
Answer:
30 kg·[tex]\frac{m}{s}[/tex]
Explanation:
Impulse is equal to the average force multiplied by the elapsed time, or
J=[tex]F_{av}[/tex]Δt
Your average force [tex]F_{av}[/tex] is 50 newtons because it was a constant force. Your elapsed time Δt was 0.6 seconds.
Multiply these values and you get an impulse of 30 kg·[tex]\frac{m}{s}[/tex]
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
Answers
Im pretty sure the answer is A)
Because Jupiter's radius balloons to roughly 11 times as large as Earth's, its gravitational force drops off by a factor of 1/112 at its surface (assuming you could find a way to stand on gas clouds).
Hope this helps!!
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
Answers
m=2000kg
F=4200N
a=4200/2000=2.1m/s²
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?
Answers
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
A satellite with mass of 3,000 kg is moving at 8,000 m/s. What is its momentum
in kg m/s?
Answers
Answer:
25,000,000 kg m/s
Explanation:
p: momentum (kg x m/s)
m: mass (kg)
V: velocity (m/s)
p= m * v
p= 3,000kg x 8,000 m/s
p= 25,000,000 kg m/s
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
Answers
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
please help me answer this
Answers
Answer:
A is the correct answer
Hope it helps
3. What is the force acting on an object with a mass of 50kg and an acceleration of
10m/s2?
I
Answers
Answer:
500 Newtons
Explanation:
50 kg x 10 m/s squared
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
Answers
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
Answers
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].
What is the difference between a scalar and a vector?
Answers
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
Was Michael Jean Cazabon a local or regional artist?
Answers
Answer:
artist
Explanation:
The acceleration of the object may be zero and the velocity of the object may not be equal to zero
Answers
Sure. That's true when ANY object is moving in a straight line at a steady speed.
Which characteristic is used to measure the amount of light radiated by a star?
A.size
B.color
C.luminosity
D.temperature
Answers
Luminosity
Which organelle captures sunlight and helps in food synthesis?
Chloroplast
Mitochondrion
Nucleus
Ribosome
Answers
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.
Explanation: Conducts photosynthesis and creates sugars for the plant