Answer:
600 C
Explanation:
Given
Current, I = 2 A
time, t = 5 min = 300s
Recall that charge is given as
Charge, Q
= It
= 2 x 300
= 600 C
A 50.0 kg child is riding in a 120.0 kg bumper car at an amusement park. The child drives the bumper car at 4.5 m/s head-on into the wall of the ride and rebounds at the speed. What is the magnitude of the change in momentum of the child in the bumper car?
Answer:
Explanation:
Total mass of child and car = 50 + 120 = 170 kg .
initial velocity u = 4.5 m/s
initial momentum = mass x velocity = 170 x 4.5 = 765 kg m/s
final velocity = - 4.5 m/s [ - ve is due to reversal of direction ]
final momentum = - 765 kg m/s
change in momentum = final momentum - initial momentum
= - 765 - ( 765 )
= - 1530 kg m/s .
Momentum of a body is the product of mass and the velocity of the body.
The magnitude of the change in the momentum of the child in the bumper car is 1530 kg-m/s.
What is change in momentum?The change in momentum of a object is the difference of the final momentum to the initial momentum.
Given information-
The mass of the child is 50 kg.
The mass of the bumper car is 120 kg.
The initial velocity of the bumper car is 4.5 m/s.
Momentum of a body is the product of mass and the velocity of the body. The initial momentum of the child in the bumper car is,
[tex]p_i=(m_c+m_b)u[/tex]
Here, [tex]m_c[/tex] is the mass of child and [tex]m_b[/tex] is the mass of the bumper car. Also [tex]u[/tex] is the initial velocity,
[tex]p_i=(50+120)\times4.5\\p_i=765[/tex]
Thus the initial momentum of the child in the bumper car is 765 kg-m/s.
When the bumper car head-on into the wall of the ride then it rebounds at the speed. Thus the final momentum will be opposite in the direction. Thus final momentum is,
[tex]p_f=-p_i\\p_f=-765[/tex]
As the change in momentum of bumper car is the difference of the its final momentum to the initial momentum. thus,
[tex]\Delta p=pf-pi\\\Delta p=-765-765\\\Delta p=-1530[/tex]
Hence the magnitude of the change in the momentum of the child in the bumper car is 1530 kg-m/s.
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In order for us to see the red apple, where do the wavelengths of light have to go?
Answer:
Explanation:650
colour* wavelength (nm) energy (eV)
red 650 1.91
orange 600 2.06
yellow 580 2.14
green 550 2.25
Answer:
A red apple appears red because when white light illuminates the red apple all of the colors in
the white light are absorbed except the red light which is reflected. Since blue light one of the primary colors (and does not contain red light), when it illuminates a red apple the apple would appear black since there is no red light to be reflected back.
Explanation:
What two factors affect the strength of a magnetic field
Answer:
Factors Affecting the Strength of the Magnetic Field of an Electromagnet: Factors that affect the strength of electromagnets are the nature of the core material, strength of the current passing through the core, the number of turns of wire on the core and the shape and size of the core.
Explanation:
I HOPE I HELPED :)
help me plssssss will give brainliest if correct
Answer:
electricity is the answer
So I think its Thermal--->Mechanical---->Electrical--->Light
Thermal from the Burner, Mechanical energy from the steam turns the wheel, Electrical energy through the wires and then light comes from the bulb.
Hope this helps :)
If a 50 KG object is at a location 25,600 km from Earth's Center, what is the gravitational force exerted by the objects on Earth? In what direction does that force act? Support your answer with evidence.
Answer: The force exerted by the object on Earth is 30.4 N, and the direction is towards the object.
Explanation:
The gravitational force between two objects of mass M1 and M2, that are at a distance R between them is written as:
F = G*(M1*M2)/R^2
Where G is the gravitational constant, such that:
G = 6.674*1^(-11) m^3/(kg*s^2)
We know that M1, the mass of the object, is 50kg
R is the distance, in this case, is 25,600km
But this needs to be written in meters, remembering that:
1km = 1000m
Then:
25,600km = (25,600*1000)m = 25,600,000 m
And M2 is the mass of Earth, which is:
M2 = 5.972*10^(24) kg
Replacing all of those in the force equation we get
F = (6.674*1^(-11) m^3/(kg*s^2))*(50kg*5.972*10^(24) kg)/( 25,600,000 m)^2
F = 30.4 N
We know that the gravitational force is attractive, then the direction in which this force acts is towards the 50kg object.
Now, remember the second Newton's law is:
F = M*a
Then the acceleration that the object causes on Earth is:
30.4N = ( 5.972*10^(24) kg)*a
a = 30.4N/( ( 5.972*10^(24) kg)) = 5.09*10^(-24) m/s
This acceleration is almost despreciable.
Abdul works at the planetarium where he is responsible for creating a show on stars. His show is entitled "A Star is Bom," and it will explain the
forces that create a star.
Abdul is creating a timeline of a star's life including its beginning, middle, and end. Abdul found a picture to include of the region around a star
before its formation begins. What does it look like?
Answer:
dust cloud
Explanation:
Stars are formed from the accumulation of the dust as well gases in the solar system. The dust and the gases collapses due to the the gravity forces and the stars are formed.
They are formed within the clouds of the dust and gases and are scattered in the galaxies. The stars are formed in a million of years from the dust clouds.
In the context, Abdul have a picture of a dust cloud which looks smoky and dusty which is the initial stage of the stars formation due to the gravity. It is the region of the star that looks like a cloud of dust before the formation of the star.
the angle between incident ray and reflected ray is 130.what is the value of angle of incidence
Answer:
65
Explanation:
as i = r , so i + i = 130
so , i = 130/2 =65
Answer:
please find attached file
Explanation:
What is it called when a sound wave transfers its energy to a new medium?
a. Reflection
b. Transmission
c. Echo
d. Absorption
Answer:
c. eco
ya que hay trasmisión de energía de un lado al hacer ecos
Can someone help me answer this??
Answer:
3,2 oky na dekh Lena ek bar2,5Which is a unit of length in the International System of units?
A inch
B. foot
C. millimeter
D. mile
Answer:
Source: National Bureau of Standards Wall Chart. 1 inch, = 25 millimetres. 1 foot, = 0.3 metre. 1 yard, = 0.9 metre. 1 mile ...
Explanation:Source: National Bureau of Standards Wall Chart. 1 inch, = 25 millimetres. 1 foot, = 0.3 metre. 1 yard, = 0.9 metre. 1 mile ...
BRAINLIEST WILL BE GIVEN!!!!! After communicating the information you requested above, he pushes the sled a total distance of 50 m and exerts a horizontal force of 800 N. During the sled push he pushes the sled 25 m, turns around and pushes it 25 m back to where he started. He argues that the work done is 40000 J, but you say the total work is actually 0 J. Why are you correct and he is wrong?
Answer:
W=F*D
40,000=800*50
With this you are wrong and he is right because work is not like displacement where if you go 10 ft to the right then 10 ft to the left you have traveled gone 0 ft from original spot. because your distance was 50 m and you exerted 800 N you multiply that together and come out with 40,000 so HE IS RIGHT YOU ARE WRONG.
PLZ mark as brainliest
What data will you collect in order to calculate the balloon car’s velocity?
Answer:
To calculate speed, all you have to do is divide distance by time.
Explanation:
Velocity is just speed in a particular direction. For example, if in 3 hours you ran 6 kilometers west, your velocity was 6 km/3 hours = 2 km/hour west.
Sometimes you wish you could go back in time and fix your mistakes but you can’t you can say sorry but it’s never enough what more do they want what is a true friend it’s someone who pulls you away when something isn’t right someone who cares about you and will go out of there way to help you but I guess that dosent mattter bc apparently I’m a fake friend goodbye forever
Answer:
very true
Explanation:
u ok?
(their* not there)
But- WHOAH- You don't need to say "Goodbye forever" you could find new friends who love and support you. People say things, they do things, but they're still human, just like you are. Mistakes will be made. You just gotta fight the bad and look for a brighter future. Not everyone or everything is gonna be sunshine and rainbows. It's gonna be bumpy and rough, you just gotta work out the kinks of it and move on.
PLS AWSNER FAST AND CORRECT I WILL GIVE BRAINLEST
On this document, explain to me using your OWN WORDS how a baby’s carseat turned backwards (also called rear-facing carseat) is safer for babies in the event of a sudden stop in a vehicle. You must include the words force and inertia in your explanation. If you don’t know right away, try doing some research (watch some videos, read about infant carseat safety, etc.). This should show me that you understand how Newton’s 1st Law: Inertia works in a very real-life situation
Answer:
When a car stops suddenly, the inertia the keeps you moving forward will finally stop and give you whiplash, which could seriously injure or even kill a baby. With the seat turned back, the force will be decreased dramatically, and prevent any fatal harm.
what forces are acting on a still object
What is the average speed between 5 seconds and 15 seconds?
Answer:
10 seconds
Explanation:
We can calculate the average speed by finding the total distance traveled divided by the elapsed time: Average speed=–s=Total distance Elapsed time
Pand S waves are both
waves.
1.longitudinal
2.surface
3.body
4.none of the above
Answer:
3.body
Explanation:
Both P and S waves are both body waves. Body waves are waves that travels through the earth.
P and S waves are elastic seismic waves that moves within the earth. Love and Rayleigh waves are surface waves that travels through the surface.
P waves is also known as primary waves S waves are known secondary waves.These waves are the first set of waves to arrive a seismic station before the surface waves are picked up.
Which type of energy transfer is responsible for the movement of magma in Earth's interior? A)conduction B)convection C)radiation D)melting
Answer:
B. Convection.
Explanation:
Convection is an energy transfer process which typically involves the transfer of heat as a result of the movement of mass. Convection is generally considered to be a more effective and efficient means of heat transport in the Earth when compared to conduction. The movement of tectonic plates is caused by the convection current because the heat gains pressure underneath the crust.
Hence, the type of energy transfer which is responsible for the movement of magma in Earth's interior is convection.
Additionally, subduction zone is a zone which represents the collision between the two (2) tectonic plates of planet earth. Subduction zone occurs in countries such as Japan, Canada, Indonesia, Russia, Alaska, and around the Pacific Ocean.
Generally, subduction zones are responsible for high intensity earthquakes, volcanoes and tsunamis around the world.
Which chemical reaction is the fastest?
A. Bread turns brown in the toaster.
B. Yogurt grows mold in the refrigerator.
C. Apple juice turns into vinegar.
D. Potatoes change flavor as they are boiled.
Answer:
Bread turns brown in the toaster.
plz mark brainliest!! plzzz
What is the equation for impulse?
What is the easiest way to add energy to matter? Heating it Cooling it Decreasing pressure Decreasing temperature
Answer:heating it
Explanation:
Answer:
Heating it
Explanation:
i took the k12 test and got a A
Which projectiles will be visibly affected by air resistance when they fall?
balloon
leaf
brick
rock
Answer:
Balloon, leaf
Explanation:
Objects that are light and have a relatively large surface that Is affected by the friction with air.
Answer:
Leaf and Baloon
Explanation:
“For every action, there is an equal and opposite reaction”
which of Newton’s laws of motion is defined?
Im horrible at memorizing the laws, help :(
if a runner is going 600 miles in 6 minutes what is his speed?
What if he is still going 600 miles in 7 minutes?
If a car has traveled 24 km in 2 hours, what is its average speed?
Answer:
12km per hour
Explanation:
The formula is distance/time.
24km/2 hours = 12km/1 hour
Explanation:
average speed = distance / time
= 24km/ 2 hr
= 12 km/ hr
Hope this will be helpful to you .
a uniform beam 6.0 metre long and weighing 4kg rests on support at p and q placed left and right 1.0 metres from each end of the beam weights of mass 10 kg and 8kg are placed near p and q respectively one each end of the beam.calculate the reaction at p and q?
Answer:
Explanation:
I need the answer me too
Answer:
p and q are 4.0 m apart
moments around q
4 p = (10 * 5) + (4 * 2) - (8 * 1)
p = 12.5
Rp = 12.5 g
moments around p
4 q = (8 * 5) * (4 * 2) - (10 * 1)
q = 9.5
Rq = 9.5 g
plz mark me as brainly
Explanation:
11) mWhich of the following sets of three units are all metric measurements
of length?*
A) inch, foot, yard
B) kilometer, centimeter, millimeter
C) kilogram, gram, centigram
D) kilometer, foot, decimeter
Answer:
Answer is B.
Explanation:
I hope it's helpful!
Need help ASAP please and thank you
Answer:
253
Explanation:
He stands at 50 so you keep counting by 50 until you get it to add three.
what do you think explains the pattern of planet density in the solar system
Answer:
If density is greater, the object sinks. Saturn is mainly composed of the lightest two gases known, hydrogen and helium. It is the only planet in our solar system whose density is less than water
Explanation:
Planet density are uneven they all have different density.
What is density?Mass per unit of volume is referred to as density. Although the Latin letter D can also be used, the sign most frequently used for density is. Mass divided by volume is how density is mathematically defined:
If density is greater, the object sinks. Saturn is mainly composed of the lightest two gases known, hydrogen and helium. It is the only planet in our solar system whose density is less than water
Planet density are uneven they all have different density.
To learn more about density refer to the link:
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Athlete mesert defar runs at 10m/s. how long will it take her to go 1 minute
Answer:
600 metres
Explanation:
1 minute = 60 seconds
1 second = 10 metres
60 seconds = 60 x 10 = 600
Athlete Mesert Defar runs 600 m in 1 minute. The speed of an object is equal to the distance traveled divided by time elapsed.
What is the relationship between Speed and Distance?The speed of an object is equal to the distance traveled divided by time elapsed.
[tex]s = \dfrac dt \rm \ \ \ or[/tex]
[tex]d = s \times t[/tex]
Where,
[tex]d[/tex] - distance
[tex]t[/tex] - times = 1 minute = 60 sec
[tex]s[/tex] - speed = 10 m /s
Put the values in the formula,
[tex]d = 10 \times 60 \\\\ d = 600 \rm \ m[/tex]
Therefore, Athlete Mesert Defar runs 600 m in 1 minute.
Learn more about Speed and Distance:
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