Answer:
The Acceleration of the object = 6.4 m/s²
Explanation:
Mass of block (m) = 5 kg
Action force on block, (F₁) = 40 N
To Find:
Acceleration of the object (a) = ?
Required solution:
Frictional force opposing the motion (F₂) = 8 N
Here in this question we have to find Acceleration of the object. So, firstly we have to find Net force of block after that we will find Acceleration of the object on the basis of conditions given above
⇒ Net force = Action force on block - Opposing friction force
⇒ F = F₁ - F₂
⇒ F = 40 - 8
⇒ F = 32 N
Now, we have to two elements that used in formula, Net force and Mass of block.
Net force of the block (F) = 32 N
Mass of block (m) = 5 kg
And we have to find Acceleration of the object.
We can find Acceleration of the object by using the Second law of Newton which says F = ma
Here,
F is the Force in N.
m is the Mass in kg.
a is the Acceleration in m/s².
So let's find Acceleration (a) !
† From second law of Newton
⇛ F = ma
⇛ a = F/m
⇛ a = 32/5
⇛ a = 6.4 m/s²
describe what form of electromagnetic radiation does a radio use?
For a 25 kg object to have the same momentum as a 5kg object, the
25kg object must have
a. a greater velocity than the 5 kg object
b. a smaller velocity than the 5kg object
c. the same velocity as the 5kg object
d. not enough information to determine
Answer:
b.
Explanation:
due to the higher mass of the 25 kg body as compared to the 5kg body ,a smaller velocity will catch up quickly with the 5kg object, but a slight increase in its velocity will have a much higher momentum
Scenario:
Two marbles role down a hill.
Marble 1 has a mass of 0.2g
Marble 2 has a mass of 1.2g
Marble 1 traveled 22cm in 0.8 seconds
Marble 2 traveled 26cm in 0.8 seconds
Determine the Kinetic Energy involved with each marble
Formulas you will need;
KE = (1/2)mv^2
v=d/t
Explanation:
K.E. of marble 1 = (1/2) × 0.2 × (22/0.8) ^2
= 0.1 × 756.25
= 75.625
K.E. of marble 2 = (1/2) × 1.2 × (26/0.8)^2
= 0.6 × 1056.25
= 633.75
A disk-shaped space station 125 m in diameter spins at a constant angular velocity. If the acceleration of a point on the rim of the disk is to be equal to "g", how long does it take for the station to make one revolution?
Answer:
t = 22.44 s
Explanation:
The acceleration of the station is centripetal which has the formula
a = v² / r
linear and angular velocity are related
v = w² r
as they indicate that the acceleration is equal to the acceleration of gravity
g = w² r
w = [tex]\sqrt{ \frac{g}{r} }[/tex]
let's calculate
w = [tex]\sqrt{ \frac{9.8}{ 125} }[/tex]
w = 0.28 rad / s
to calculate the time use us
w = θ / t
in a complete revolution θ = 2pi
t = θ / w
let's calculate
t = 2π / 0, 28
t = 22.44 s
Which of the following is NOT a component of skill-related fitness?
A.balance
B.speed
C. Power
D. Heart rate
Answer:
D
Explanation:
The 1st 3 are important components
sorry for miss spells
PLEASEHELP THANK YOU SM
Answer:
I belive it would be the first answer choice.
Explanation:
When the Mass is lower, the ball moves faster so it would have more kintetic energy
A(n) _____ is an object that stops
electrons from completing the circuit.
An aneurism refers to?
a. a blocked blood vessel
b. varicose vein
c. a hole or weakness in an artery
d. plaque development on the inside of artery wall
Answer:
The correct answer is a blocked blood vessel.
Explanation:
Hope this helped Mark BRAINLIEST!!!
what substance might impact the formation of volcanic rock?
marking brainliest!
Answer:
Magma is less dense than the surrounding rock which causes it to rise. When magma reaches the surface it is then called lava and the eruptions of lava and ash produce volcanoes. The lava that reaches the Earth's surface will harden and become igneous rock.
if a cup of ice is left in the sun all day will the ice undergo a chemical or physical change?
help me please!
Answer:
Physical change
Explanation:
its changing matter but is still water so its not chemicly changing
What happens to the temperature of an air mass as it rises, and why? What happens to the temperature of an air mass as it rises, and why? Temperature increases because fewer air molecules allow the air mass to expand. Temperature decreases because increasing numbers of air molecules allow the mass to expand. Temperature increases because more air molecules force the air mass to contract. Temperature decreases because fewer air molecules allow the air mass to expand. Temperature remains the same because fewer air molecules allow the air mass to expand.
Answer:
Temperature decreases because fewer air molecules allow the air mass to expand.
Explanation:
Temperature of air mass decreases as it rises . It is so because at upper strata
of atmosphere , air is sparse and therefore air molecules there is relatively less . It results in lower pressure around air mass going up . This results in expansion of gas . Molecules have to do work against mutual attractive force for expansion so their energy becomes less . This cools down the air.
The current of a circuit with a 3.0-volt battery and 1.0 ohm of resistance is __ amps
Answer:
3 amps
Explanation:
V = IR
I = [tex]\frac{V}{R}[/tex]
I =[tex]\frac{3}{1}[/tex]
I = 3 amps
What is the net force in the y-direction?
0 N
25 N
225 N
250 N
The correct option is (1) 0 N.
Net force in the y direction is 0 if the vector sum of your forces acting in the y direction is zero.The forces acting on an item are balanced when the net force is zero. Two forces that are acting in the same direction cancel one another out. An item will always remain at rest if the forces are out of balance.Formula of net force -
FNet = Fa + Fg + Ff + .............. FN.
Definition of force
The word 'force' has a precise meaning. At this level, it is completely appropriate to describe a force as a push or a pull.
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If the work done when a charge of 5.2 × 10-13 coulombs is moved between two points is 4.7 × 10-12 joules, what is the potential difference?
A.
4.7 volts
B.
5.2 volts
C.
9.0 volts
D.
10 volts
E.
12 volts
Answer:
9.0, might be to late but someone in the future might need it.
Answer:
C. 9.0
Explanation:
I like boys
What challenges do scientists face in studying the Sun?
Answer:
Explanation:
The sun sends out solar wind constantly - charged particles that can degrade visual sensors and the skin of spacecraft, and the occasional blast of a solar flare, which can send out clouds of charged ions that can disrupt communications and electronics on board probes and satellites.
Hope this Helps <3
As the north pole of the magnet approaches the solenoid, a current is induced in the solenoid, creating an electromagnet. The end closest to the north pole will be a ____ pole.
Answer:
south
Explanation:
An electromagnet is a magnet that is formed when a current wire loop is rotated in a magnetic field, a current gets induced in the wire loop. A changing magnetic field causes an electric current in the wire loop.
A solenoid is a wire coil into a wire coil. When a iron piece in placed inside the solenoid it becomes electromagnet.
Since the north pole of a magnet approaches a solenoid, current is induced and the end near the north pole of the magnet becomes the south pole as like poles distract and unlike poles attract.
True or false the weak force also called the weak nuclear interaction is by far the weakest of the four fundamental forces
Answer:
True
Explanation:
There basically four type of forces in nature that govern the entire laws of nature. These four forces are
1.Gravity.
2.The weak force.
3.Electromagnetism.
4.The strong force.
The weak force as it is called is the weakest of the all the forces mentioned above. It is also called weak nuclear interaction force and is responsible for particle decay.
What is the relationship between potential and kinetic energy and electricity
Answer:
The primary relationship between the two is their ability to transform into each other. In other words, potential energytransforms into kinetic energy, andkinetic energy converts into potential energy, and then back again.
People should be more concerned about the global water budget than the local water budget.
True
Answer:
true
Explanation:
because global helps local
In a thunderstorm at 32.0°C, Reginald sees a bolt of lightning and hears the thunderclap 2.00s later. How far from Reginald did the lightning strike? The speed of sound through air at 32.0° C is 350.2 m/s.
Answer:
dont have the answer but you cute
Explanation:
Two football players with mass 75 kg and 100 kg run directly toward
each other(this means they are running in the opposite directions).
The 75 kg player has a speed of 6m/s to the right and the 100 kg
player has a speed of 8 m/s to the left. What is the momentum of
the 75 kg player?
Answer:
A. 2 m/s
(m x v) (m x v) = (m+m)v
Which action has more power
8. List the objects in order from least to greatest inertia
A
B
D
5 kg
4 kg
3 kg
10 kg
a = 1 m/s/s
a 3 m/s/s
a 2 miss
a= 0 m/s/s
Answer:
mhibyguftyftfrehlknmjhbn
Explanation:
njhvvtfryvbnyuhnuihnjhk
A charge q1 of -5.00 x 10^-9 C and a charge q2 of -2.00x 10^-9 C are separated by a distance of 40.0 cm. Find the equilibrium position for a third charge of +15.0x 10^-9 C.
Answer:
Explanation:
Let the equilibrium position of third charge be x distance from q₁.
Force on third charge due to q₁
= 9 x 10⁹ x 5 x 10⁻⁹ x 15 x 10⁺⁹ / x²
Force on third charge due to q₂
= 9 x 10⁹ x 2 x 10⁻⁹ x 15 x 10⁺⁹ /( .40-x)²
Both the force will act in opposite direction and for balancing , they should be equal.
9 x 10⁹ x 5 x 10⁻⁹ x 15 x 10⁺⁹ / x² = 9 x 10⁹ x 2 x 10⁻⁹ x 15 x 10⁺⁹ /( .40-x)²
5 / x² = 2 / ( .4 - x )²
Taking square root on both sides
2.236 / x = 1.414 / .4 - x
2.236 ( .4 - x ) = 1.414 x
.8944 - 2.236 x = 1.414 x
.8944 = 3.65 x
x = .245 m
24.5 cm
So the third charge should be at a distance of 24.5 cm from q₁ .
Sodium lamps give off light at
589 nm. When that light passes
through a diffraction grating with
d = 3.88 x 10-6 m, what is the angle of
its second order (m = 2) maximum?
Answer:
θ = 17.67°
Explanation:
The grating equation can be used here to find the angle. The grating equation is given as follows:
[tex]m\lambda = dSin\ \theta[/tex]
where,
m = order = 2
d = 3.88 x 10⁻⁶ m
λ = wavelength of light = 589 nm = 5.89 x 10⁻⁷ m
θ = angle = ?
Therefore, using these values in the equation, we get:
[tex](2)(5.89\ x\ 10^{-7}\ m) = (3.88\ x\ 10^{-6}\ m)Sin\theta \\Sin\theta = \frac{(2)(5.89\ x\ 10^{-7}\ m)}{(3.88\ x\ 10^{-6}\ m)}\\\\\theta = Sin^{-1}(0.3036)[/tex]
θ = 17.67°
Answer:17.67
Explanation:
answer this plsss
The range of human hearing is 20 Hz – 20 000 Hz.
Calculate the longest and shortest wavelengths we can hear.
Explanation:
the velocity of sound in air is 330m/s
and v=fh, where h is wavelength f is frequency,
h=v/f.......(1)
longer wavelength
h=330/20,h=16.5m
shorter wavelength
h=330/20000,h=1.65x10-²m
The lesser frequency was used for finding the longer wavelength since wavelength is inversely proportional to frequency,
thus an increase in frequency brings a decrease in wavelength.
and shorter wavelengths are more high and intense
hope this helps
A trampoline spring has a force constant k = 800 N/m and is stretched exactly 17.5cm. What is the energy required to do this?
Answer:
the energy required for the extension is 12.25 J
Explanation:
Given;
force constant of trampoline spring, k = 800 N/m
extension of trampoline spring, x = 17.5 cm = 0.175 m
The energy required for the extension is calculated as;
E = ¹/₂kx²
E = 0.5 x 800 x 0.175²
E = 12.25 J
Therefore, the energy required for the extension is 12.25 J
How can we represent a narrow beam of light?
Answer:
It is easy to imagine representing a narrow beam of light by a collection of parallel arrows—a bundle of rays. As the beam of light moves from one medium to another, reflects off surfaces, disperses, or comes to a focus, the bundle of rays traces the beam's progress in a simple geometrical manner.
I hope it's helpful!
Answer:It is easy to imagine representing a narrow beam of light by a collection of parallel arrows—a bundle of rays. As the beam of light moves from one medium to another, reflects off surfaces, disperses, or comes to a focus, the bundle of rays traces the beam's progress in a simple geometrical manner.
Explanation:
How much work (MJ) must a car produce to drive 125 miles if an average force of 306 N must be maintained to overcome friction?
Answer:
The right solution is "61.557 MJ". A further explanation is given below.
Explanation:
The given values are:
Force,
F = 306 N
Drive,
D = 125 miles,
i.e.,
= 201168
meters
As we know,
The work done will be:
= [tex]F\times S[/tex]
On substituting the given values, we get
= [tex]306\times 201168[/tex]
= [tex]61557408 \ J[/tex]
On converting it in "MJ", we get
= [tex]61.557\times 10^6 \ J[/tex]
= [tex]61.557 \ MJ[/tex]
Where on the periodic table are metal elements most likely found?
A. Along the stairstep line
B. In the main groups
C. On the left side
D. On the right side
Metal elements are most likely found on the left side of the periodic table. Details about periodic table can be found below.
What is periodic table?Periodic table is a tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same group or column.
Metallic elements are one of the group of elements found on the periodic table and they include the following:
CalciumPottasiumScandiumMetallic elements are located on the left hand side of the periodic table.
Learn more about periodic table at: https://brainly.com/question/11155928
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Answer: (A) Along the stairstep line
Explanation: