Answer:
Position.
Explanation:
Motion can be defined as a change in the location (position) of a physical object or body with respect to a reference point.
This ultimately implies that, motion would occur as a result of a change in location (position) of an object with respect to a reference point or frame of reference i.e where it was standing before the effect of an external force.
Mathematically, the motion of an object is described in terms of acceleration, time, distance, speed, velocity, displacement, position, etc.
A reference point refers to a location or physical object from which the motion (movement) of another physical object or body can be determined.
For example, a point on a map is considered to be a reference point because it represents the starting point of an object or person in motion.
Hence, a reference point allows you to determine the position an object.
You are planning an investigation that explores the properties of matter. Which of the following will help you discover a physical property?
Experiment: place a powder into a beaker that contains a liquid/Result: the beaker gets hotter
Experiment: place a powder into a beaker that contains a liquid/Result: the solid dissolves into the liquid
Experiment: place a powder into a beaker that contains a liquid/Result: the mixture begins to fizz and bubble
Experiment: place a powder into a beaker that contains a liquid/Result: the mixture catches fire and burns down the lab
Answer:
I will post your answer soon
Explanation:
If you are planning an investigation that explores the properties of matter, then experiment: place a powder into a beaker that contains a liquid Result : the beaker gets hotter will help you discover a physical property.
What is experiment ?An experiment is a technique used to confirm or deny a hypothesis, as well as assess the possibility or effectiveness of something that has never been done before. Experiments show what happens when a certain component is modified, which sheds light on cause-and-effect relationships. The purpose and scope of experiments vary widely, but they always rely on a repeatable process and a rational examination of the outcomes. Natural experimental experiments are also a thing.
While a child may conduct simple experiments to better understand how objects fall to the ground, scientific teams may spend years conducting thorough research to increase their understanding of a phenomenon.
This experiment shows enthalpy is positive, heat is absorbed in this experiment. this breaks the atoms and it needed the energy.
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PLEASE HELP WILL GIVE BRAINLIEST (I NEED TWO PICKED) PLZzZZZZ AND THxS
Answer:
A and B
Explanation:
They contain Chlorophyll
They are relatively tall
An initially motionless test car is accelerated to 115 km/h in 8.58 s before striking a simulated deer. The car is in contact with the faux fawn for 0.815 s, after which the car is measured to be traveling at 60.0 km/h. What is the magnitude of the acceleration of the care before the collision? What is the magnitude of the average acceleration of the car during the collision?
Answer:
a) a = 3.72 m / s², b) a = -18.75 m / s²
Explanation:
a) Let's use kinematics to find the acceleration before the collision
v = v₀ + at
as part of rest the v₀ = 0
a = v / t
Let's reduce the magnitudes to the SI system
v = 115 km / h (1000 m / 1km) (1h / 3600s)
v = 31.94 m / s
v₂ = 60 km / h = 16.66 m / s
l
et's calculate
a = 31.94 / 8.58
a = 3.72 m / s²
b) For the operational average during the collision let's use the relationship between momentum and momentum
I = Δp
F Δt = m v_f - m v₀
F = [tex]\frac{m ( v_f - v_o)}{t}[/tex]
F = m [16.66 - 31.94] / 0.815
F = m (-18.75)
Having the force let's use Newton's second law
F = m a
-18.75 m = m a
a = -18.75 m / s²
Which of the following statements describes the electric force between a positive particle and a negative particle as they approach each other?
Answer:
They will Attract each other and act like magnets
Explanation:
When 2 positive or 2 negative particles are near each other they repel. When 2 neutral particles are together they do nothing, but when a positive and a negative are together their charges sort of overlap each other and they attract.
The velocity of a car increases from 10 km/h to 50 km/h in 5 seconds. What is its acceleration?
Answer:
2.22m/s^2
Explanation:
two girls drag a bag across the floor. One girl exerts a force of 10 newtons and the other girl a force of 30 Newton's in the same direction. Calculate the resultant force on the bag.
Answer:
Explanation:
The resultant would be a combination of the two forces. We need to add them together since they are exerting a force in the same direction.
10+30= 40 N of force
The mass of an object is 0.201 kg. The object requires 15.0 J of heat to
raise its temperature by 283 K. What is the specific heat of the object? *
Answer:
49k
Explanation:
yes you can go with me
Hurry pls I need help
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.
PLEASE HELP !! A 10 ohm resistor is connected to a 9V battery how much current is flowing through the circuit?
Resitance (R)= 10 Ohm
Potential difference (V) = 9V
V= IR
I= V/R
I= 9/10
I= 0.9 Ampere
Therefore 0.9 Ampere of current is flowing through the circuit.
The current through the circuit can be calculated using Ohm's law. The current flowing through the circuit with a resistance of 10 ohm and 9 V is 0.9 ampere.
What is Ohm's law?Ohm's law states that the potential difference or voltage across a circuit is the product of the current and resistance through the circuit. Thus as current or resistance increases, voltage across the circuit also increases.
According to Ohm's law, V= IR.
Given the voltage V = 9 V
Resistance R = 10 ohm
Current = voltage/ resistance (V/R)
= 9 V/ 10 Ω.
= 0.9 A.
Therefore, the current passing through the circuit is 0.9 A.
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How many seconds does it take for net force 20N to change the velocity to a 5kg mass by 2m/s?
Answer:
0.5 second
Explanation:
We are given that
Force, F=20 N
Mass, m=5 kg
Change in velocity,=2m/s
We have to find the time taken to change the velocity .
We know that
Force, F=ma
Where
Acceleration, a=Change in velocity/time
[tex]a=\frac{2}{t}[/tex]
Substitute the values
[tex]20=5\times \frac{2}{t}[/tex]
[tex]t=\frac{5\times 2}{20}[/tex]
[tex]t=0.5 s[/tex]
A hair dryer transfers 48K J of energy in one minute. What is the power rating of the hairdryer? *
Answer:
800W
Explanation:
48,000/60=800
The power rating of the hairdryer is 800W.
What is Power?Power can be defined as the rate at which work is done by an object. The S.I unit of power is Watt(W).
The formula of power will be
Power = Work done/time
A hair dryer transfers 48K J of energy in one minute.
1 minute = 60 seconds
P = 48,000/60
P = 800 W
Hence, the power rating of the hairdryer is 800W.
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AP physics! Will give brainliest to correct answer!
Answer:
D
Explanation:
Answer:
HELLO THERE
Explanation:
D
A steel ball bearing is released from a height H and
rebounds after hitting a steel plate to a height H.
What is true about the collision with the steel plate?
Answer:
ELASTIC collision
kinetic energy is conservate
Explanation:
As the ball bounces to the same height, it can be stated that the impact with the floor is ELASTIC.
As the floor does not move the conservation of the moment
po = pf
-mv1 = m v2
- v1 = v2
So the speed with which it descends is equal to the speed with which it rises
Therefore the kinetic energy of the ball before and after the collision is the same
Answer:
CORRECT (SELECTED)
It is elastic since kinetic energy was conserved.
Explanation:
An Olympic high diver (mass = 70 kg) stands on a platform 20 m above the surface of the water. What is the diver's gravitational potential energy?
Answer: 13720
Explanation: the equation is....
(70 kg) (9.8 m/[tex]s^{2}[/tex]) (20 m) = 13720. Calculate the unbalanced force acting on a 0.50 kg toy rocket that accelerates at a constant rate with a velocity of 20 m/s (up) to 45 m/s (up) in 0.7 s.
Answer:
17.85N
Explanation:
Given data
m= 0.5kg
u= 20m/s
v= 45m/s
t= 0.7second
From
F= mΔv/t
substitute
F=0.5*(45-20)/0.7
F=0.5*25/0.7
F=12.5/0.7
F=17.85
Hence the force is 17.85N
How can I skip class:
A: Fake sick.
B: Have a heating pad on my heat to have a fake fever.
C: Fake barf
D: Act fine until a test the neb sick
Answer:
c gl
Explanation:
::::::::::::::::::::::::
PLEASE Help! Physics Question
Answer:
hundred metre race on sports day started by a gun firing when the gun is fired a pop of smoke comes out of the gunners will you suggest about trigonometry right here is the sound of the explosion before or at it seems of of smoking containers out of the governor ke this answer about something I don't know I am sorry
1. Which of the following is an example of a force?
-0.1 Newtons to the left
-5 m/s/s
-0.5 m/s/s
-10 Newtons
1)A 2.0 kilogram wooden object is a on a wooden surface. What is the maximum force of friction that can be produced in this system?
Answer:
fr = 7.84 N
Explanation:
To solve this exercise we must use Newton's second law, the case of translational equilibrium
F -fr = 0
F = fr
where F is the applied force and fr the friction force
for the Y axis
N -W =
N = W
N = m g
the friction force has the equation
fr = μ N
fr = μ m g
in this case they indicate the two materials that are in contact with wood on wood, so when reviewing the tables the coefficient of static friction is μ=0.4
let's calculate
fr = 0.4 2.0 9.8
fr = 7.84 N
A box has a 20 N force applied to it to move it 5 m. What is the work done on the box? 4 J 4 N 25 J 100 J
Complete the statements about convection currents. Convection currents occur in fluids because of temperature and differences. Convection currents transfer energy throughout a fluid. They continue until all of the fluid is at the same temperature.
Answer:
density; thermal
Explanation:
Convection currents occur in fluids because of temperature and density differences. Convection currents transfer thermal energy throughout a fluid.
When a fluid is heated, the molecules closest to the heat source gets heated first and their temperature is raised. The rise in temperature lowers their density and as such, they move to the upper portion of the fluid to be replaced by yet-to-be-heated molecules at the upper portion.
When the replacement molecules also get heated, the same process occurs and a to-and-from rotational movement of molecules, also known as convection current, is created within the fluid. The to and from movement, thus, transfer thermal energy within the fluid until all the molecules within the fluid are at the same temperature.
Answer
density; thermal
Explanation:
its right i just did it
Abby is writing a biography of Isaac Newton. He was a brilliant English scientist who developed the law of universal gravitation in the 1600s. Newton also developed laws of motion and ideas about inertia. His laws and ideas were used in many subjects such as physics, astronomy, and mathematics. Explain inertia using Newton's first law of motion. Give an example of inertia.
Answer:
Over several years, Newton worked until he had developed the law of universal gravitation, which debuted in his book Mathematical Principles of Natural Philosophy (1869). This idea stood until the concepts of quantum theory and relativity were posed in the mid 19th century.
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Now set the tension to low and wiggle the wrench to create more waves. Can you explain how moving the first point on the string, the one closest to the wrench, affects the next point on the spring? How does this fit with your understanding of the force of a stretched spring?
Answer:
When the string moves, it creates a very small change in the distance to the next point, th
Explanation:
When the string moves, it creates a very small change in the distance to the next point, this generates a restoring force that tends to push the string back, this small disturbance propagates along the string and is what creates the pulse.
This is similar to what happens when a spring is stretched and a restoring force is generated shaved by the law of shortening.
F = k Dx
Answer:
As the first particle travels upward, it pulls on the next particle, which follows the first particle upward. Then next in line is pulled up in turn, and so on. The motion of each particle follows the one before it, either up or down, with a slight lag in time. This succession of particles moving up or down travels along the string as a wave. Eventually, it pulls every particle along the string up and down in series.
Explanation:
Please help me with this
Answer:
The most correct option for the magnitude of the velocity of the ship relative to the port is;
33 km/h
Explanation:
The given parameters of the cargo ship are;
The speed of the cargo ship = 25 km/h
The direction of the cargo ship, θ₁ = 20° North of East
The speed of the current = 10 km/h
The direction of the current, θ₂ = 15° North of East relative to the port
Therefore the direction of the ship relative to the port, 'θ', is given as the sum of θ₁ and θ₂ as follows;
θ = θ₁ + θ₂ = 20° + 15° = 35°
The component of the velocities relative to the port are given as follows;
The velocity of the ship, v₁ = 25·cos(35°)·i + 25·sin(35°)·j
The velocity of the current , v₂ = 10·cos(15°)·i + 10·sin(15°)·j
The velocity of the ship relative to the port, v = (25·cos(35°) + 10·cos(15°))·i + (25·sin(35°) + 10·sin(15°))·j
∴ v ≈ 30.14·i + 16.93·j
The magnitude of 'v' is [tex]\left | v \right |[/tex] = √(30.14² + 16.93²) ≈ 34.6
Therefore, the magnitude of the velocity of the ship relative to the port, [tex]\left | v \right |[/tex] ≈ 34.6 km/h.
Therefore, the closest correct option for the velocity of the ship relative to the port is 33 km/h
Answer:
The correct option for the magnitude of the velocity of the ship relative to the port is...
(33 km/h)
a car travels straight for 20 miles on a road that is 30 north of east. what is the easiest component of the cars displacement to the nearest tenth of a mile
A -17.3 miles
B -10.0miles
C 10.0 miles
D 17.3 miles
Answer:
17.3 miles
Explanation:
PLEASE PLEASE HELPPP!
Select all that apply!
Answer:
1 AND 3
Explanation:
All of the following are sources of calories except HELP ASAP!!!
Answer:
vitamins don't contain calories
hey, what is rectilinear propagation of light ?
Help with physics please! Offering a bunch of points!
2. A large collection of stars, gas, and dust is called a _____?