Answer:
weight of two people
Explanation:
Suppose two people are walking and among the two people, if one is heavier than the other, then the one weighing heavier will walk slower because the acceleration of the person weighing lighter is greater.
2nd Law: F=ma
a= change in velocity/time
a=F/m
say both objects must accelerate at a=2 m/s^2
object A is a wood plank, which is roughly 10 kg
object B is my metal ball, which has a mass of 100kg
now, solving for F applied to both objects
Fwood=(10kg)(2 m/s2)= 20 N
Fmetal=(100kg)(2 m/s2)= 200 N
the F needed to move the metal ball is 10 times greater than the F needed to move the wood plank. Hope this helped, I'm about to go fail my physics exam :)
A sound wave ________ and ______ the air molecules around your ear.
A sound wave squeezes together and thins out the air molecules around your ear. The places where these things happen are called the compressions and rarefactions of the sound wave.
What is the mass of a student who weighs 618 Newton?
Answer:
63.01 kg is the mass of the student whose weight is 618 Newton
Mass of student is 63 kilogram (Approx.)
Given that;
Weight of a student = 618 Newton
Find:
Mass of student
Computation:
We know that;
Gravitational acceleration g = 9.8 m/s²
So,
Mass = Weight / Gravitational acceleration
Mass of student = 618 / 9.8
Mass of student = 63.06
Mass of student = 63 kg (Approx.)
Learn more:
https://brainly.com/question/8426458?referrer=searchResults
An arrow is fired directly horizontal off a cliff that is 10.0 meters tall with a velocity of 65.5m/s. How long is the arrow in the air? *
Answer: The answer is..
Explanation:
10m. And I know what you are doing so there is also an answer for B which is,93.66. For more, search it up on google.
A bullet is shot horizontally from the edge of a tall cliff. At the instant the bullet is shot, a rock is dropped from the same height. Neglecting air resistance, which one will hit the ground first
Answer:
The bullet and the rock will hit the ground at exactly the same time
Explanation:
Due to the gravitational forces, defined by Newton's law of gravitation, the acceleration of objects towards the center of the Earth is constant and equal to the acceleration due to gravity, g ≈ 9.8 m/s².
Therefore, given that the initial vertical velocity, u, of the rock and the bullet are both equal to zero, from the following equation of motion, we have;
s = u×t + 1/2·g·t²
t = Time
s = The height from which the bullet is fired and the rock is dropped
s = 0×t + 1/2 × 9.8 × t²
s = 1/2 × 9.8 × t²
t = √(2 × s/9.8)
Therefore, the time to hit the ground is only dependent on the height from which the bullet and the rock were allowed to fall freely.
Armand hands the rock to Pierre, who is standing next to the trampoline. Explain how Armand moves, in terms of the forces acting on him.
Answer:
Armando's weight ,restored force created by the trampoline
a harmonic movement within the trampoline
Explanation:
In a trampoline we have two forces that actuate Armando's weight and the restored force created by the trampoline that depends on the deformation distance of the elastic canvas.
Amando's weight is vertical and directed towards the center of the Earth and has a constant value, this weight is balanced with the elastic force the springboard exerts on Armando in a vertical direction.
In general, when entering the trampoline, a small jump is made, this creates a speed that deforms the canvas until the speed is reduced to zero, at this point the elastic force is greater than the weight and the boy begins to climb, After the boy leaves the canvas he meets only the force of gravity and his speed decreases to zero and begins his fall.
In Summary Armando is in a harmonic movement within the trampoline
Jonathan connected a bulb of unknown resistance to a 3.7 V battery and measured a current of 1.23 A flowing through the bulb.
What current flowing through the bulb can Jonathan claim for his second electric circuit?
A
0.60 amps
B
1.66 amps
C
15.00 amps
D
15.15 amps
Answer:
d
Explanation:
15.15 amps lowing through the bulb can Jonathan claim for his second electric circuit
What is a circuit ?Electronic components like resistors, circuitry, capacitors, inductors, and diodes are connected by conductive cables or traces that allow electric current to flow between them.
It is a specific kind of electrical circuit, and it is called as electronic rather than electrical, there usually needs to be at least each active component present.
In this circuit Signals can be amplified, calculations can be made, and data can be transported from one location to another thanks to the combination of factors and wires.
Electric current is generated by a power source like battery, and can travel through conductors such as wires, before returning to the power source. Electric circuits can be divided into two types: series and parallel circuits.
For more details regarding circuit , visit
brainly.com/question/29473253
#SPJ2
In addition to displacement, which of the following must be used for a more complete description of the average velocity of an object?
acceleration
O change in time
O Distance
O speed
Answer:
Option: 3 Speed √
is the right answer
What is
0.02204 in scientific notation
Answer:
2.204x10^2 -2 = 0.02204 in scientific notation.
Please help me please! :(
Answer:
The trachea is one part of the respiratory tree, that is a conduit for air to pass through on its way to or from the alveoli of the lungs. This transmits oxygen to the body and removes carbon dioxide.
The bronchi are the airways that lead from the trachea into the lungs and then branch off into progressively smaller structures until they reach the alveoli, the tiny sacs that allow for the exchange of oxygen and carbon dioxide in the lungs.
Explanation:
Answer:
dont know
Explanation:
sorry man
mechanical advantage of a second class lever is always greater than one why? give reason
Answer:
It is because the load is in between fulcrum and effort making a longer effort arm than the load arm resulting to multiplication of force and a mechanical advantage of greater than 1.
Explanation:
The distance from the fulcrum to the effort is the effort arm where as the distance from the fulcrum to the load is the load arm.
The first class lever has a mechanical advantage that varies per the position of the load with respect to effort position from the fulcrum. They have the fulcrum at the middle. For example, a beam balance and a pliers. The formula to remember is FLE for easy categorization of the lever classes.
The second class lever , the load is at the middle.For example a wheel barrow and a bottle opener. In this class, the effort arm is longer than the load arm.The effort is force multiplication making the mechanical advantage to be greater than 1.
The third class of lever has effort in the middle.For example a spade or a knife.In this class effort arm is shorter than the load arm, causing change in direction of force. The effect is a mechanical advantage less than 1.
Which change in the medium will likely cause the speed of light waves to decrease?
moving from a solid to a gas
moving from a liquid to a gas
moving from a gas to a liquid
moving from a solid to a liquid
Answer:
D
Explanation:
Physics is confusing :(
Answer:
30's-40's
Explanation:
A block of mass 3.5 kg displaces 1000 cm ^3 of water when fully immersed inside. The upthrust on body will be what.
Given :
Mass of block = 3.5 kgWeight of Block = 3.5 kgfVolume of water displaced when body is fully immersed = 1000 cm³Answer:
For calculating Upthrust on block we will have to first find out Volume of block :
↪Volume of block = Volume of water displaced
↪ Volume of block = 1000 cm³ = 0.001 m³
________________Now, we will calculate the Upthrust on block:
↪ Upthrust on block = Volume of block * Density of water * g
↪ Upthrust on block = 0.001 * 1000 * g
↪ Upthrust on block = 1 kgf
A truck is moving at a constant speed of 50 m/s. A boy riding in the back of the truck throws a newspaper out the back of the truck at a speed of 20 m/s. What is the speed of the paper relative to someone standing on the roadside?
Answer:
70m/s
Explanation:
Without completing the calculations, determine what the new volume will be in the problem below. Also, explain how you were able to determine the new volume without completing the calculations. Pay special attention to how the pressure is changing. An 80.0-mL sample of carbon monoxide gas (CO) is stored at a pressure of x kPa. The pressure is doubled to 2x kPa. What is the new volume?
According to the Boyle's law, as pressure is inversely proportional to volume at constant temperature the the new volume of gas is 40 ml.
What is Boyle's law?Boyle's law is an experimental gas law which describes how the pressure of the gas decreases as the volume increases. It's statement can be stated as, the absolute pressure which is exerted by a given mass of an ideal gas is inversely proportional to its volume provided temperature and amount of gas remains unchanged.
Mathematically, it can be stated as,
P∝1/V or PV=K. The equation states that the product of of pressure and volume is constant for a given mass of gas and the equation holds true as long as temperature is maintained constant.The nature of graph obtained when gas obeys Boyle's law is hyperbolic curve.
Learn more about Boyle's law,here:
https://brainly.com/question/1437490
#SPJ5
4. Why does time play an important role in collisions?
a) Time plays no important role in collisions
b) The longer the time of the collision, the smaller the force
c) The longer the time of the collision, the larger the force
d) The shorter the time of the collision, the smaller the force
The longer the time of the collision, the smaller the force. (B)
That's why, if you fall off the roof, you want to be stopped by a net or a pile of leaves, and not by the ground. You want the stop to last as long as possible. Like everybody says: It's not the fall that hurts, it's the stop at the end.
a kid throws a ball from a tower 45 meters tall how fast is the ball going when it hits the ground?
Answer:
29.69 m/s
Explanation:
From the question given above, the following data were obtained:
Height (h) = 45 m
Velocity (v) =...?
Next, we shall determine the time taken for the ball to get to the ground. This can be obtained as follow:
Height (h) = 45 m
Acceleration due to gravity (g) = 9.8 m/s²
Time (t) =?
h = ½gt²
45 = ½ × 9.8 × t²
45 = 4.9 × t²
Divide both side by 4.9
t² = 45/4.9
Take the square root of both side
t = √(45/4.9)
t = 3.03 s
Finally, we shall determine the velocity with which the ball hits the ground. This is illustrated below:
Initial velocity (u) = 0 m/s
Acceleration due to gravity (g) = 9.8 m/s²
Time (t) = 3.03 s
Final velocity (v) =.?
v = u + gt
v = 0 + (9.8 × 3.03)
v = 0 + 29.694
v = 29.694 ≈ 29.69 m/s
Therefore, the ball hits the ground with a velocity of 29.69 m/s.
Does a parachute a free fall give reason
Answer:
no
Explanation:
because there is nothing holding you back
PLEASE HELP, TELL ME THE PROPERTIES OF THESE THREE STATES OF MATTER WILL GIVE BRAINLIEST
I) Name of State of Matter: Solid
a) Property of this State of Matter:
b) Property of this State of Matter:
c) Property of this State of Matter:
II) Name of State of Matter: Liquid
a) Property of this State of Matter:
b) Property of this State of Matter:
c) Property of this State of Matter:
III) Name of State of Matter: Gas
a) Property of this State of Matter:
b) Property of this State of Matter:
c) Property of this State of Matter:
Answer:
I) Name of State of Matter: Solid
a) Property of this State of Matter: Definite shape and volume.
b) Property of this State of Matter: Generally have a higher density.
c) Property of this State of Matter: Diffusion of one solid into another solid is characteristically slow.
II) Name of State of Matter: Liquid
a) Property of this State of Matter: Definite volume but no definite shape.
b) Property of this State of Matter: Vaguely compressible; Barely compressible.
c) Property of this State of Matter: Flow from a higher level to a lower level.
III) Name of State of Matter: Gas
a) Property of this State of Matter: Easily compressible.
b) Property of this State of Matter: Expand to fill containers.
c) Property of this State of Matter: They are able to occupy far more space than liquids or solids.
Answer:
The theree state of matter is
1.solid.
2.liquid.
3.gas.
Explanation:
During an experiment, you take a measurement of 12.9 inches.
What is this
measurement in centimeters?
A. 5.08 cm
B. 32.8 cm
C. 45.1 cm
D. 16.2 cm
Answer:
1 inch = 2.54 cm
12.9 inches= 12.9 x 2.54
= 32.766
= 32.8 cm (approximately)
Hope it helps...
Answer:
B) I just solved it
Explanation:
True or false. A high gear ratio = more speed = more force.
Answer:
False
Explanation:
I took the test and true was incorrect so the answer is false
hope this helps
Answer:
False
Explanation:
False. A high gear ratio = less speed = more force
whats the force of a pitching machine on a baseball
Answer:
kinetic
Explanation:
Answer:
Baseballs pitched by a machine have a horizontal velocity of 30 meters/second. The machine accelerates the baseball from 0 meters/second to 30 meters/second in 0.5 seconds. If a baseball has a mass of 0.15 kilograms, the force the machine exerts its newtons.
What is meant by the term "fixed point"?
Explanation:
A fixed point is a point x such that. f(x) = x . Graphically, these are exactly those points where the graph of f, whose equation.
Answer:
a fix joint is a point x such that.f (x) = x.
Explanation:
Graphically, these are execty those point where the graph of f, whose equation.
How much work is done on a cat that is pushed 50 meters with 3 N of force?
Answer:
150
Explanation:
work done = constant force x distance moved in the direction of force
W = F x S
(UNITS: J = N x m)
50 x 3 = 150
Two waves have the following waveforms.
Wave A
U
Wave B
Which conclusion can BEST be supported by the illustrations?
lol i’m in your physical science class what was the answer
The potential energy for a mass on a spring is proportional to the square of which of these quantities?
OA.mass
OB.frequency
OC.period
OD.displacement
O E. velocity
In a softball game, a batter hits the ball at the velocity and angle shown
below. What is the maximum range of the ball?
Velocity = 32m/s
50°
Range
A. 95.1 m
B. 102.9 m
C. 80.0 m
7
D. 113.5 m
Question 28
1 pts
A cube 5.0 cm on a side has a mass of 750 grams. Find the Density. Hint: Volume of a cube
=Length x Width x Height
A.6 g/cm3
B.20 g/cm3
C. 14 g/cm3
D. 8 g/cm3
Answer:
A) 6 [g/cm^3]
Explanation:
The volume of a cube is equal to the product of height by width by length, all these dimensions are equal.
V = L*L*L
where:
L = 5 [cm]
V = (5)^3
V = 125 [cm^3]
Density is defined as the relationship between mass and volume.
density = mass/volume
density = 750/125
density = 6 [g/cm^3]
An eraser is thrown upward with an initial velocity of 5.0 m/s. The eraser's velocity after 7.0 seconds is ____ m/s.
Answer: -64
Given parameters:
Initial velocity of eraser = 5.0m/s
Time = 7.0s
Unknown:
Final velocity = ?
Solution:
Since we have been given the initial velocity and duration of the throw, we can apply the appropriate motion equation to solve this problem.
V = U - 2gt
where V is the final velocity
U is the initial velocity
g is the acceleration due to gravity = 9.8m/s²
t is the time taken
V = U - gt
V = 5 - (9.8)(7)
V = -63.6 or -64m/s
The velocity is -64m/s
As the eraser is thrown upward, its velocity after 7.0 seconds is approximately -64m/s.
Given the data in the question;
Initial velocity of the eraser; [tex]u = 5.0m/s[/tex]
Final velocity; [tex]v = \ ?[/tex]
Time; [tex]t = 7.0s[/tex]
To determine the eraser's velocity after 7.0 seconds, we us the First Equation of Motion:
[tex]v = u + at[/tex]
Where v is the final velocity, u is the initial velocity, t is the time and a is the acceleration. Since the eraser was thrown upward, acceleration due to gravity becomes ( negative acceleration ) [tex]g = -9.8m/s^2[/tex]
Hence, the equation becomes
[tex]v = u - gt[/tex]
We substitute in our values and solve for "v"
[tex]v = 5.0m/s - ( 9.8m/s^2 \ *\ 7.0s )\\\\v = 5.0m/s - 68.6m/s\\\\v = -63.6m/s\\\\v = -64m/s[/tex]
Therefore, as the eraser is thrown upward, its velocity after 7.0 seconds is approximately -64m/s.
Learn more; https://brainly.com/question/9240794
2. Use Tables Both an atom of carbon-12 and
an atom of boron-12 have the same mass
number. Use a periodic table to help you
describe the differences in the two atoms.
Answer:\
the atomic number of boron (B) is 5.
Atomic number is the number of protons, which is characteristic of a chemical element. Atomic number increases from left to right in Periodic table.
Boron is an element with atomic number 5, which means it has 5 protons and 5 electrons, boron atom has neutral charge.
Electron configuration of boron: ₅B: 1s² 2s² 2p¹, it has three valence electrons in 2s and 2p orbitals.
Explanation:
there you go have a good day
