Answer:
a=m/f
Explanation:
ifkvmfkb gjbn trkbv mrgvbmnrgvngkbngjbntguj
What is the mass of an object that experiences a gravitational force of 685 N near Earth's surface where g
Answer:
mass = GPE divided by gxh
Explanation:
Answer:
69.9 kg
Explanation:
w = mg
m = w/g
m = 685/9.8
m = 69.9 kg
If an object is still in a space (no gravity, no air) and a force is quickly applied upward
what would you expect to happen?
Answer:
It will continue to move without slowing down
Explanation:
Because no friction
Answer:
To be logical, it depends on the object. A human can throw a meteor like a soccer ball. So most likely it would get propelled upward with out air force, meaning it would be unable to contract heat to its sedimentary exterior.
Describe how a neutral material becomes attracted to a negatively charged object brought near it.
Answer:
Electric force
Explanation:
It’s like static stuff
diagram 1 shows a teenage boy skating along a straight path. His velocity decreases from 5.0ms-1 to 3.0ms-1 as he moves through a distance of 16.0 m. What is his deceleration?, in ms-2?
Which of the following are vector quantities? Select all that apply.
10 degrees Fahrenheit
F
o 10 m
N 7 miles southwest
9 steps to the left
75 mph north
Answer:
7 miles southwest
9 steps to the left
75 mph north
Explanation:
A vector quantity is any physical quantity that specifies the magnitude of the quantity and its direction.
So, the choices that gives a magnitude and direction are vectors.
The other type of physical quantities are the scalar which only specifies the magnitude but no direction;
9 steps to the left and 7 miles southwest are called displacement
75 mph north is velocity
HELP PLEASE!!!
An 85-kg clown is fired from rest out of a 480-kg cannon. If the clown’s speed is 18 meters per second after the firing, then what is the recoil speed of the cannon?
Answer:
101.65 m/s
Explanation:
Step one:
Given data
m1= mass of gun.= 480kg
m2= mass of bullet. = 85kg
v1=
v2= final velocities of bullet. = 18 meters per second
m1u1+m2u2=m1v1+m2v2
u1=0; u2=0
0=m1v1+m2v2
Step two:
Recoil velocity v1= -(m1/m2)v2
v1= -(480/85)18
v1= 5.64*18
v1=101.65 m/s
Student A states that when she sits down on a chair, she is exerting a force on the chair and that is all that happens. Student B states that when she sits on a chair, the chair is actually exerting a force back on her in reaction to her force exerted upon the chair. Which student is correct and why?
A.
Student A is correct because Newton’s 1st Law of Motion states that if the chair exerted a force on the student, her motion would change.
B.
Student A is correct because Newton’s 3rd Law of Motion states that for every action there is an equal and opposite action and the chair does not show any action.
C.
Student B is correct because Newton’s 1st Law of Motion states that if the chair were to be exerting a force on the student, her motion would change.
D.
Student B is correct because Newton’s 3rd Law of Motion states that for every action there is an equal and opposite action and the chair’s action counteracts the student’s so that neither move.
Answer:
C
Explanation:
I got it right on the test !!
The student that is correct is C. Student B is correct because Newton’s 1st Law of Motion states that if the chair were to be exerting a force on the student, her motion would change.
According to Newton's third law of motion, there's an equal and opposite reaction force for every action force. It should be noted that when an individual sits on a chair, the chair is actually exerting a force back on her in reaction to the force exerted upon the chair.
Student A is incorrect because when she sits down on a chair, the force that she's exerting on the chair is not the only thing that happens because the chair exerts a force back. Therefore, as the chair were to be exerting a force on the student, her motion would change.
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The day VFR visibility and cloud clearance requirements to operate over the town of Cooperstown, after departing and climbing out of the Cooperstown Airport at or below 700 feet AGL are:_________A. 3 miles and clear of cloudsB. 1 mile, 1000 feet above, 500 feet below, and 2000 horizontal from cloudsC. 1 miles clear of cloudsD. 3 miles, 1000 feet above, 500 feet below, and 2000 horizontal from clouds
Answer:
The correct option is;
C. 1 mile clear of clouds
Explanation:
Given that the indicated airspace location is at or below 700 feet AGL therefore, it is taken as being in the region of a class G airspace which covers the airspace regions from the base up to and equal to 1,200 feet beneath the class E airspace and the requirement for VFR flight for class G are 1 mile and clear of clouds.
A car moves with a velocity of 54km/h to a velocity of 72lm/h for 5 minutes. determine the distance covered
Answer:
The distance covered is 5250 meters
Explanation:
Motion With Constant Acceleration
It's a type of motion in which the velocity of an object changes uniformly in time.
The change of velocities is given by the following equation :
[tex]v_f=v_o+at\qquad\qquad [1][/tex]
Where:
a = acceleration
vo = initial speed
vf = final speed
t = time
The distance traveled by the object is given by:
[tex]\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad\qquad [2][/tex]
Solving [1] for a:
[tex]\displaystyle a=\frac{v_f-v_o}{t}[/tex]
The car changes its speed from vo=54 Km/h to vf=72 Km/h in t=5 minutes. Let's convert all to meters and seconds.
vo=54 Km/h * 1000/3600 = 15 m/s
vf=72 Km/h * 1000/3600 = 20 m/s
t = 5 min * 60 = 300 s
Now we calculate the acceleration:
[tex]\displaystyle a=\frac{20-15}{300}[/tex]
[tex]\displaystyle a=\frac{5}{300}[/tex]
[tex]a=0.0167\ m/s^2[/tex]
Now for the distance:
[tex]\displaystyle x=15*300+\frac{0.0167*300^2}{2}[/tex]
[tex]\displaystyle x=4500+750=5250[/tex]
x = 5250 m
Note: We have shown only some of the decimals for the acceleration, but we have used all the decimals stored in the calculator to present accurate results.
The distance covered is 5250 meters
Which
planet takes more time to complete
one rotation on its axis than to complete
one revolution around the Sun?
Answer:
Should be Venus
Explanation:
Answer: The answer is Venus!
Explanation: Venus has the longest day of any planet in our solar system. It completes one rotation every 243 Earth days. Its day lasts longer than its orbit.
Describe Newton's Three Laws of Motion
Answer:
1: an object will stay still until acted on by another force
2: acceleration of an object depends on the mass of the object and the force applied
3: for every action there is an equal and opposite reaction
Helpp! If the box moves 12m to the right calculate the work done on the box.
Answer:
80 times 12=960
Explanation:
You have to do the equation for work, the equation is work= force times distance, the force here is 80newtons, the distance is 12meters, so you would do 80 times 12 to get your answer of 960
'can you outrun a tornado ??
Answer:
No, because the tornado goes faster than a car at 100 m per hour
Explanation:
If R1 = 6, R2 = 2 and VAΓ = 16 Find Roλ, I, VAB, VAΓ
Answer:
Rt = 8 ohm
I = 2 A
Vab = 12 V
VbΓ = 4 V
VaΓ = 16 V
Explanation:
Electric Circuits
We'll apply Ohm's formula to solve the circuit shown on the image:
V = R.I
Where V is the voltage, R is the resistance, and I is the current.
The circuit has two resistances connected in series, thus the total resistance is:
Rt = R1 + R2 = 6 ohm + 2 ohm = 8 ohm
Now the current is:
[tex]\displaystyle I=\frac{V}{Rt}[/tex]
[tex]\displaystyle I=\frac{16}{8}[/tex]
I = 2 A
The voltages are calculated below:
Vab = R1 * I = 6 ohm * 2 A = 12 V
VbΓ = R2 * I = 2 ohm * 2 A = 4 V
VaΓ = Vab + VbΓ = 12 V + 4 V = 16 V
What causes the random, zig-zag movement (Brownian motion) of smoke particles suspended in air?
Answer:
It is caused by air molecules colliding with smoke particles
Explanation:
To start with, Brownian motion is the erratic or irregular movement of very small particles in a medium due to continuous bombardment by molecules that surround the medium.
Thus, smoke moves in a Zig-Zag manner (Brownian motion) due to continious air bombardment. If it were pollen grain suspended in water, the erratic movement (Brownian motion) of the grains is caused by bombardment from water molecules.
Pendulum earth air lololo
Answer:
ooooookkkkkk????
Explanation:
Which of the following is a base?
A. Lemon Juice
B. Baking Soda
C. Vinegar
Why do we need measurement
Answer:
Measurement are tools to help know how long or wide something is
Explanation:
Answer:
There is many reasons we need measurement one is to answer questions. Another reason is we need it in are daily life, many jobs require knowing how to use measurements like construction workers and factory's. Without measurement driving and daily life tasks would be difficult.
Por que es posible suponer que la energía térmica que gana el agua en un calorímetro es igual a la energía térmica que pierde la muestra que se va a probar
Answer:
El material del calorímetro es aislante, conducción térmica entre sustancias y alrededores casi nula.
Explanation:
Es posible suponer que la energía térmica que gana el agua en un calórimetro equivale a la energía térmica perdida por la muestra que se prueba, en tanto que el material del calorímetro se caracteriza por ser de naturaleza aislante, es decir, que no permite las interacciones de energía entre los fluidos al interior y los alrededores del calorímetro.
What natural product is plastic made from?
Answer:
cellulose, coal, natural gas, salt and crude oil
Explanation:
Answer:
Plastics are derived from natural, organic materials such as cellulose, coal, natural gas, salt and crude oil.
the most important is crude oil
which of the following statements concerning revolution is true?
A. earth revolves around the sun.
B. the revolution and rotation of earth are identical.
C. the sun revolves around its axis.
D. earth revolves around its axis.
Answer:
the answer is a
Explanation:
Klay Thompson and Draymond Green wanted to play a joke on Steph Curry. Kay threw a balloon horizontally at 50 m/s from 150 m high bridge. How fa
did the balloon go when it landed?
Answer:
52 feet away from the nba court
Draymond Green and Klay Thompson wanted to make fun of Steph Curry. Kay could have thrown a balloon horizontally at 50 meters per second from a bridge that was 150 meters high, and it would have landed 276.5 meters away.
What are the three equations of motion?There are three equations of motion given by Newton,
v = u + at
S = ut + 1/2 × a × t²
v² - u² = 2 × a × s
By using the second equation of the motion,
S = ut + 1/2 × a × t²
150 = 0 + 0.5 × 9.8 × t²
t² = 150 / 4.9
t = 5.53 seconds
The horizontal displacement of the balloon = 50 × 5.53
= 276.5 meters
Thus, Draymond Green and Klay Thompson wanted to make fun of Steph Curry. Kay could have thrown a balloon horizontally at 50 meters per second from a bridge that was 150 meters high, and it would have landed 276.5 meters away.
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1.5 x 10-3 standard notation
A 0.155 kg arrow is shot upward
at 31.4 m/s. What is its kinetic
energy (KE) when it leaves the
bow?
Answer:
KE = ½mv² = ½(0.155)(31.4)² = 76.4 J
Explanation:
The kinetic energy (KE) of the 0.155 kg arrow when it leaves the bow is 76.4 joule.
What is kinetic energy?Kinetic energy is a type of power that a moving object or particle possesses. An item accumulates kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force.
A moving object or particle has kinetic energy, which depends on both its mass and its rate of motion.
Given parameters:
Mass of the arrow: m = 0.155 kg.
Upward velocity of the arrow: v = 31.4 m/s.
Hence, The kinetic energy (KE) of the arrow = 1/2 × mass × velocity²
= 1/2 × 0.155 × 31.4 joule
= 76.4 joule.
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Friction converts Kinetic energy to what type of energy?
Answer: Friction between the two surfaces converts kinetic energy into thermal energy.
Explanation: Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them. Friction produces heat because it causes the molecules on rubbing surfaces to move faster and have more energy.
John sees Linda Running towards him at 11 m/s. while running, Linda throws a ball at 5m/s. what is the speed of the ball as observed by John?
A 30,000-kg freight car is coasting at 0.850 m/s with negligible friction under a hopper that dumps 110,000 kg of scrap metal into it. (a) What is the final velocity of the loaded freight car? (b) How much kinetic energy is lost?(Check 2 choices for the answer) *
Explanation:
Given that,
Mass of a freight car, [tex]m_1=30,000-kg[/tex]
Speed of a freight car, [tex]u_1=0.85\ m/s[/tex]
Mass of a scrap metal, [tex]m_2=110,000\ kg[/tex]
(a) Let us assume that the final velocity of the loaded freight car is V. The momentum of the system will remain conserved as follows :
[tex]30000\times 0.85=(30000+110000)V\\\\V=\dfrac{30000\times 0.85}{30000+110000}\\\\=0.182\ m/s[/tex]
So, the final velocity of the loaded freight car is 0.182 m/s.
(b) Lost on kinetic energy = final kinetic energy - initial kinetic energy
[tex]\Delta K=\dfrac{1}{2}[(m_1+m_2)V^2-m_1u_1^2)]\\\\=\dfrac{1}{2}\times [(30,000+110,000 )0.182^2-30000(0.85)^2]\\\\=-8518.82\ J[/tex]
Lost in kinetic energy is 8518.82. Negative sign shows loss.
Which of the following is NOT an example of a medium.
A. outerspace
B. water
C. air
D. metal
Answer:
D.) Metal
Explanation:
light can not pass through metal.
The example of a substance which is NOT a medium is:
D. metal
What is a Medium?It is any material substance which can propagate waves or energy.
Water is the mode of sea waves. Air is the medium through which we hear sound waves. The E.F andM.F are the vehicle of light. Individuals are the vehicle of an arena wave.
Metals are not considered as medium as they do not allow any energy to travel through them.
Thus, option D is correct.
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How much time does it take for a bird flying at a speed of 45 miles per hour to travel a distance
of 1, 800 miles?
Answer:
40
Explanation:
How much force is required to raise a 0.2 kg mass?
please only answer if you know it.
We have that for the Question "How much force is required to raise a 0.2 kg mass?" it can be said that
The Force required to raise W=1.962N will be F=1.962N since F=W
F=1.962N
From the question we are told
How much force is required to raise a 0.2 kg mass?
Generally the equation for the Weight is mathematically given as
[tex]W=M*g\\\\W=0.2*9.81\\\\W=1.962N\\\\[/tex]
Therefore
The Force required to raise W=1.962N will be F=1.962N since F=W
F=1.962N
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