The motion of a car on a position time graph is represented with a horizontal tine What does this indicate about the car's motion?
Answer:
Position-Time graphs display the motion of a object by showing the changes of velocity with respect to time.
The motion of a car on a position-time graph that is represented with a horizontal line indicates that the car has stopped moving.
A straight line with a positive slope indicates that the car is moving at a constant velocity, and thus the slope is constant. On the other hand, a curve with a changing slope, shows that the velocity is changing.
Which of the following is a location with a high probability of containing an electron?
O orbital
O proton
O Bohr
Answer:
The answer is orbitial! :))
Answer:
it's orbitial
Explanation:
What are gears and what is a lever ?
Answer:
agear lever or agear stick is the lever that you use to change gear in acar or other vehicle
plz help urgent
will give brainliest
Answer:
D
Explanation:
Highest Pressure in water is always at the bottom
When does the difference between two vectors equal to zero ?
Answer: Yes, two vectors of equal magnitude that are pointing in opposite directions will sum to zero
Explanation: Two vectors of unequal magnitude can never sum to zero. If they point along the same line, since their magnitudes are different, the sum will not be zero.
What is the common property of the elements pinctogen
Answer:
The pnictogens consist of two non-metals, two metalloids, one metal, and one element with unknown chemical properties. All the elements in the group are solids at room temperature, except for nitrogen which is gaseous at room temperature.
Two positively charged particles are 0.03 m apart. The first
particle has a charge of 8.1 C, and the second a charge of 2.6
C. Which change would lead to the smallest increase in the
- electric force between the two particles?
A. Reduce the charge on the first particle by one half.
O B. Double the distance between the particles.
O C. Double the charge on the second particle.
OD. Reduce the distance between the particles by one
half
The correct option is option C.
Doubling the charge on the second particle produces the smallest increase in force.
Electrostatic force:Let the given charges be Q and q such that:
Q = 8.1C and q = 2.6C
separated by a distance of R = 0.03m
Now, we have to calculate the minimum increase in electric force.
The electrostatic force is given by:
F = kQq/R²
Option A is wrong since reducing the charge will reduce the force.
Option B is wrong since the force is inversely proportional to the distance, so increasing the distance will decrease the force.
Option C ⇒ Double the charge on the second particle:
F = 2kQq/R²
Option D ⇒ Reduce the distance between the particles by one half:
So, the new distance between the charges is R/2, then
F = kQq/(R/2)²
F = 4kQq/R²
Clearly, the operation in option C gives the smallest increase in the force.
Learn more about Electrostatic force:
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What changes when unbalanced forces are
applied to a moving bike along the direction
it is moving?
Describe the importance that keystone species have in the environment. What would happen if these species disappeared? How would it affect the local ecosystems?
Answer:
See the answer below
Explanation:
The keystone species of an environment are those species of organisms that are highly influential to the functioning of the ecosystem without whom the ecosystem would be drastically affected, lose its structure, or cease to exist totally.
The influence of keystone species in an environment is disproportionately high when compared to their population in the environment. If keystone species disappeared from an environment, such an environment will find it difficult to perform ecosystem functions with an entirely different structure. In some cases, the ecosystem might cease to exist in its entirety because the species that hold it together are no longer present.
Water waves with a frequency of 4.5 Hz and a wavelength of 2.0m are traveling across a small harbor that is 200 m wide. How long does it take the waves to travel from one side of the harbor to the over?
Answer:
22.2 seconds
Explanation:
recall that for a regular wave
v = fλ
where v = wave velocity (we need to find this to solve the next part)
f = frequency = 4.5 Hz
λ = wavelength = 2.0m
Substituting these into the equation above,
v = fλ
v = (4.5)(2)
v = 9.0m/s
Also recall that Distance travelled = velocity x time
in our case, we found velocity above (= 9.0 m/s) and the distance across the harbor is given as 200m, hence
Distance travelled = velocity x time
200 = 9.0 x time
time = 200/9.0
time = 22.2 seconds
can anyone solve this?
Carol pushes down at an angle of 30 degrees from the vertical on a 10.0 kg wood crate causing the crate to move across a wood floor at a constant velocity of 2.0 m/s. How much force does Carol exert on the crate? (μs = 0.5 and μk = 0.2)
Answer:
F = 39.2 N
Explanation:
Since, the object is in uniform motion. Therefore, the frictional force on object will be:
Frictional Force = μk N = μk mg
where,
μk = coefficient of kinetic friction = 0.2
m = mass of crate = 10 kg
g = 9.8 m/s²
Therefore,
Frictional Force = (0.2)(10 kg)(9.8 m/s²)
Frictional Force = 19.6 N
The horizontal component of force must be equal to this frictional force to continue the uniform motion:
F Sin 30° = 19.6 N
F = 19.6 N/Sin 30°
F = 39.2 N
whats the net force
Answer:
13n pushing left
Explanation:
1563 - 1550
calculate the value of net force acting on given body?5N acting towards right & 15N force acting towards left on the brick.(draw fbd)
Answer:
The net force acting on the body is 10N directed to the left.
Explanation:
Magnitude of force to the right = 5N
Magnitude of force to the left = 15N
Net force acting on the object and in what direction;
Solution:
It is the vector sum of all forces acting on a body. This net force is the single force that will replace the forces acting on a body;
For the problem;
Net force = Force to the left + Force to the right
Let us take left to be negative and right to be positive;
Force to the left = -15N
Net force = -15N + 5N = -10N
The net force acting on the body is 10N directed to the left.
5 points
At 55 minutes how fast is the object moving?*
velocity
B01
B
60
40
А
20
me
min
D
20
40
10
20
30
50
55 m/s
60 m/s
20 m/s
0 m/s
Answer:
9 answer hai brown
What is the difference between oceanic crust and continental crust?
How could fluid friction be decressed
Answer:The fluid friction or drag can be reduced are minimised by giving special shape called streamlined shape to the objects which Move through fluids like air or water
Explanation:
plz mark brainlyest
What forces are acting on a book lying on the table? Are action-reaction forces involved in this situation?
HELPP!! Does anybody have the answer key to Lab Report: Conservation of Linear Momentum for my online class for physics?? WILL GIVE 80points
Answer:
Try copy and pasting the intructions it into google, and it should pop up if it exists.
Hope this helps.
Explanation:
Answer:
Send me the download of the lab and I will complete it for you
When a wire moves through a magnetic field, an electric current is produced in the wire. Why does this phenomenon occur?
Answer:
The negative charges and positive charges in the wire are pushed in the opposite directions by the magnetic field .
Explanation:
Hope this helps
When a wire moves through a magnetic field, an electric current is produced in the wire, and the phenomenon to which this is referring is called electromagnetic induction, as presented in option A.
What is electromagnetic induction?A magnetic field is a region in space where a magnetic force can be detected, so when a wire moves through a magnetic field, the magnetic force exerted on the wire generates a voltage, and the voltage creates an electric current in the wire. This electromagnetic induction phenomenon occurs because of the movement of charged particles within the wire, and this phenomenon can be explained by Faraday's Law of Electromagnetic Induction.
Hence, an electric current is produced in the wire, and the phenomenon to which this is referring is called electromagnetic induction, as presented in option A.
Learn more about electromagnetic induction here.
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The question is incomplete, complete question is below
When a wire moves through a magnetic field, an electric current is produced in the wire. Why does this phenomenon occur?
A) electromagnetic induction
B)magnetic force
A force of 5 N gives to mass my and an acceleration of 8m/s2 and a mass m2
an acceleration of 24m/s2. What acceleration would it give if both masses are
tied together
Answer:
a=6m/sec²
Explanation:
f=5 N
a1=8m/sec²
a2=24m/sec
m1=f/a1=5/8kg
m2=f/a2=5/24kg
New, f=(m1+m2)a
a=5/5/8+5/24=5/15+5/24=24*5/20
a=6m/sec²
A person lifts a package weighing 75 N. If she lifts it 1.2 m off the floor, what work has she done?
Answer:
The answer is 90 JExplanation:
The work done by an object can be found by using the formula
workdone = force × distance
From the question we have
workdone = 75 × 1.2
We have the final answer as
90 JHope this helps you
Answer:
[tex]\boxed {\boxed {\sf 90 \ Joules}}[/tex]
Explanation:
Work can be found by multiplying the force by the distance.
[tex]W=f*d[/tex]
The force of the package is 75 newtons.
The distance the package is lifted off the ground is 1.2 meters.
[tex]f= 75 \ N \\d=1.2 \ m[/tex]
Substitute the values in and multiply.
[tex]W= 75 \ N *1.2 \ m[/tex]
[tex]W=90 \ N*m[/tex]
1 Newton meter (N*m) is equal to 1 Joule (J).
Therefore, our answer of 90 Newton meters is equal to 90 Joules.
[tex]W= 90 \ J[/tex]
The work done is 90 Joules.
If you throw a ball up with a velocity of 7 m/s, how long will it take for the ball to reach
the top of its path?
Answer:
42secs
Explanation:
v=u-gt
0=7-10t
10t=7
t=7/10
t=7/10*60
t=42
What is the net force required to accelerate a 1.1 kg box at a rate of 2.8
m/s??
Answer:
Fnet = 13.86N
Explanation:
Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.
Mathematically, net force is given by the formula;
[tex] Fnet = Fapp + Fg[/tex]
Where;
Fnet is the net force Fapp is the applied forceFg is the force due to gravitationGiven the following data;
Mass = 1.1kg
Acceleration = 2.8m/s²
To find the applied force;
[tex] Fapp = ma[/tex]
Substituting into the equation, we have;
[tex] Fapp = 1.1 * 2.8[/tex]
Fapp = 3.08N
To find the gravitational force;
We know that acceleration due to gravity, g = 9.8m/s²
[tex] Fg = mg[/tex]
Substituting into the equation;
[tex] Fg = 1.1 * 9.8[/tex]
Fg = 10.78N
To find the net force;
[tex] Fnet = Fapp + Fg[/tex]
Substituting into the equation, we have;
[tex] Fnet = 3.08 + 10.78[/tex]
Fnet = 13.86N
Therefore, the net force required is 13.86N
calculate the value of net force acting on given body?5N acting towards right & 15N force acting towards left on the brick.(draw fbd)
please help!!!!!
Answer:
-10N to the left.
Explanation:
The net force on a body is the single force that represent all the forces acting on a body.
Let the right direction be positive
Let the left direction be negative
Force acting to the right = 5N
Force acting to the left = -15N
Net force = 5N + (-15N) = -10N
The net force will be directed -10N to the left.
The energy released or absorbed by a substance during a change of state
Answer:
Specific latent heat or specific vaporation vaporization heat
on:
Uses mass only do to no temperature change only state
do you think you know this???
Answer:
electrical energy into mechanical energy
A 3 kg rubber block is resting on wet concrete. The coefficient of static friction is 0.3. What is the minimum force that must be applied to the block to make the block begin to accelerate?
Answer:
You would have to find the friction force of the rubber block which would be found with the equation of Normal force (mass*gravity) times cooeficient of friction which would give 8.82 N for the amount of friction and because you need more force than 8.82 N (assuming gravity is 9.8)
We need to find the frictional force of the rubber block. This is the normal force (mass × gravity) multiplied by the coefficient of friction, which gives us a friction quantity of 8.82N. This is because it requires a force greater than 8.82N (Gravity is 9.8)
What is coefficient of friction?Mathematically, = F/N, where F represents the frictional force and N represents the normal force. Because F and N are both measured in force units (such as Newtons or Pounds), the coefficient of friction is dimensionless.The friction coefficient is the ratio of the frictional force resisting movement of two contacting surfaces to the normal force pushing the two surfaces together.Both F and N are measured in units of force (such as Newtons or Pounds), so the coefficient of friction is dimensionless. The coefficient of friction has different values for static friction and sliding friction.In stiction, the frictional force resists the force applied to the object and the object remains stationary until the force of stiction is overcome. In kinetic friction, the frictional force opposes the motion of an object.To learn more about coefficient of friction, refer to:
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How long does it take for skin to replace itself
Throughout your life, your skin will change constantly, for better or worse. In fact, your skin will regenerate itself approximately every 27 days. Proper skin care is essential to maintaining the health and vitality of this protective organ.
define a machine in the physics subject
Answer:
Explanation:
Different Parts of an Electric Motor and Their Function
A simple motor has the following parts:
A power supply – mostly DC for a simple motor
Field Magnet – could be a permanent magnet or an electromagnet
An Armature or rotor
Commutator
Brushes
Axle
Power Source: A simple motor usually has a DC power source. It supplies power to the motor armature or field coils.
Commutator: It is the rotating interface of the armature coil with a stationary circuit.
Field Magnet: The magnetic field helps to produce a torque on the rotating armature coil by virtue of Fleming’s left-hand rule.
Armature Core: Holds the armature coil in place and provides mechanical support.
Armature Coil: It helps the motor to run.
Brushes: It is a device that conducts current between stationary wires and moving parts, most commonly the rotating shaft.
What Is The Working Principle of An Electric Motor?
The working of an electric motor is based on the fact that a current carrying conductor produces a magnetic field around it. To better understand, imagine the following situation.
Take two bar magnets and keep the poles facing each other with a small space in between. Now, take a small length of a conducting wire and make a loop. Keep this loop in between the space between the magnets such that it is still within the sphere of influence of the magnets. Now for the last bit. Connect the ends of the loop to battery terminals.
Once electricity flows through your simple circuit, you will notice that your loop “moves”. So why does this happen? The magnetic field of the magnets interferes with that produced due to electric current flowing in the conductor. Since the loop has become a magnet, one side of it will be attracted to the north pole of the magnet and the other to the south pole. This causes the loop to continuously rotate. This is the principle of working of electric motor.
Compare the momentum of a 7160 kg truck moving at 5.00 m/s to the
momentum of a 2240 kg car moving at 15.0 m/s.
Answer:
2,200
Explanation:
truck=35800,car=33600