Answer:
This is a category of physics dealing with the observable phenomena, and experimental aspects by investigation, and scientific testing to measure the properties of matter, and energy.
Answer:
Experimental physics is the category of disciplines and sub-disciplines in the field of physics that are concerned with the observation of physical phenomena and experiments.
I hope you helped^_^
Follow me for more answersA rock falls from rest off a high cliff. How far has the rock fallen when its speed is 39.2 meters per second?
( plss I need help lol)
The rock fell as far as 78.4 meters.
Given the following data:
Initial speed = 0 m/s (since the rock fell from rest). Final speed = 39.2 m/sWe know that the acceleration due to gravity (a) for an object is equal to 9.8 meter per seconds square.
To find how far (distance) has the rock fallen, we would use the third equation of motion;
[tex]V^2 = U^2 + 2aS[/tex]
Where:
V is the final speed. U is the initial speed. a is the acceleration. S is the distance covered.Substituting the given parameters into the formula, we have;
[tex]39.2^2 = 0^2 + 2(9.8)S\\\\1536.64 = 0 + 19.6S\\\\19.6S = 1536.64\\\\S = \frac{1536.64}{19.6}[/tex]
Distance, S = 78.4 meters.
Therefore, the rock fell as far as 78.4 meters.
Read more: https://brainly.com/question/8898885
Se lanza una piedra de 3.00 N verticalmente hacia arriba desde el suelo. Se observa que, cuando está 15.0 m sobre el suelo, viaja a 25.0 m/s hacia arriba. Use el teorema trabajo-energía para determinar a) su rapidez en el momento de ser lanzada. b) su altura máxima
Answer:
(a). The speed at the moment of being thrown is 30.41 m/s.
(b). The maximum height is 47.18 m.
Explanation:
Given that,
Weight of stone = 3.00 N
Height = 15 m
Speed = 25.0 m/s
(a). We need to calculate the speed at the moment of being thrown
Using work energy theorem
[tex]W=\dfrac{1}{2}m(v_{2}^2-v_{1}^2)[/tex]
[tex]-mg\times d=\dfrac{1}{2}m(v_{2}^2-v_{1}^2)[/tex]
Put the value into the formula
[tex]-9.8\times15=\dfrac{1}{2}\times(v_{2}^2-v_{1}^2)[/tex]
[tex]-2\times9.8\times15=25^2-v_{1}^2[/tex]
[tex]-v_{1}^2=-300-25^2[/tex]
[tex]v_{1}=\sqrt{925}[/tex]
[tex]v_{1}=30.41\ m/s[/tex]
(b). We need to calculate the maximum height
Using work energy theorem
[tex][tex]W=\dfrac{1}{2}mv_{2}^2-\dfrac{1}{2}mv_{1}^2[/tex]
[tex]mg\times d=\dfrac{1}{2}mv_{2}^2-\dfrac{1}{2}mv_{1}^2[/tex]
Here, [tex]\dfrac{1}{2}mv_{2}^2[/tex]=0
[tex]-(mg)\times d=\dfrac{1}{2}mv_{1}^2[/tex]
[tex]d=\dfrac{v_{1}^2}{2g}[/tex]
Put the value into the formula
[tex]d=\dfrac{30.41^2}{2\times9.8}[/tex]
[tex]d=47.18\ m[/tex]
Hence, (a). The speed at the moment of being thrown is 30.41 m/s.
(b). The maximum height is 47.18 m.
what is the definition inertia
Answer:
a tendency to do nothing or to remain unchangedor...
resistance to change in some other physical propertyYou can choose the definition you like.
Hope this helps :)
Answer:
The tendency of a body at rest to stay at rest or of a body in motion to remain in motion .
Explanation:
Inertia is the tendency of objects to remain in motion or to stay at rest unless acted upon by an outside force.
As you grow and learn, your neurons continue to connect, making you better at the
things you do.
False
True
True. When you learn something new neurons make connections and retain that knowledge. That means the more you learn a skill the more connections you make and the more muscle memory you get from doing that skill. Thus you get better at that skill.
Answer:
true
Explanation:
Billy, a mountain goat, is rock climbing on his favorite slope one sunny spring
morning when a rock comes hurtling toward him from a ledge 40.0 m above.
Billy ducks and avoids injury. a) How fast is the rock traveling when it passes
Billy? b) How does this speed compare to that of a car traveling down the
highway at the speed limit of 25 m/s (equivalent to 55 mi/h)?
Answer:
There is not enough information to solve how fast the rock was traveling
They are both very fast, as mountain goats are very fast, and if he ducks, he was faster than the rock. The speed compares
Explanation:
I did find this tho.
This question can be solved by using the law of conservation of energy.
a) The rock is traveling at "28 m/s" when it passes billy.
b) The speed of the rock is "1.12 times" the speed of the car.
a)
We can find the speed of the rock by using the law of conservation of energy:
Loss of Potential Energy = Gain in Kinetic Energy
[tex]mgh = \frac{1}{2}mv^2\\\\2gh = v^2\\v = \sqrt{2gh} \\\\[/tex]
where,
v = speed of the rock = ?
g = acceleration due to gravity = 9.81 m/s²
h = height = 40 m
Therefore,
[tex]v = \sqrt{2(9.81\ m/s^2)(40\ m)}[/tex]
v = 28 m/s
b)
Now, we find the ratio between the speed of the rock and the speed of the car:
[tex]\frac{speed\ of\ rock}{speed\ of\ car} = \frac{28\ m/s}{25\ m/s}\\\\speed\ of\ rock = (1.12)speed\ of\ car[/tex]
Learn more about the law of conservation of energy here:
https://brainly.com/question/20971995?referrer=searchResults
The attached picture explains the law of conservation of energy.
y’all I would rlly appreciate if y’all gave me the answers to all my questions. My cousin has over 200 assignments she hasn’t done so I’m trying to help her and tbh I don’t know this stuff bc I’ve never done it in school.
Answer:
BB×bb cross is the answer
I need help for 2 ASAP I haven’t been able to figure it out :(
If the radio waves that are sent from the speed gun have a frequency of 400,000,002 Hz and the radio waves reflected off an approaching car have a frequency of 400,000,109 Hz, what is the speed of the car? (Hz is the SI unit of frequency, equal to cycles per second).
Answer:
40.1 m/s or 144.36 km/h
Explanation:
The equation is (v=∆ f/f) x (c/2)
V is velocity
delta f is returned frequency minus intial frequency divided by the initial frequency
c is the speed of light in m/s divided by 2
v= (400,000,109 Hz - 400,000,002 Hz)/400,000,002Hz x (299,792,458 m/s)/2
What is population education?
Answer:
Is all about people – how many of us there are, how we shape the world around us, and how we interact with each other.
Explanation:
Answer:
Population is derived from French word "populous" meaning 'people' so population is study of people living together and education is life long knowledge.
Explanation:
sana makatulong
1.a car sitting at rest on the road
balanced or unbalanced
explain your answer
Answer:
Balanced force
Explanation:
Balanced Forces, When forces are in balance, acceleration is zero. Velocity is constant and there is no net or unbalanced force. ... Although friction is acting on the person, there is no change in velocity and friction is not a net force in this case. Friction is only a net force if it changes the velocity of a mass.
The car is balanced.
If there are any forced acting on it, then those are balanced too.
A bus trip covers 191 km and takes 4 hours and 15 minutes. What is the average speed of the bus in kilometers per hour?
Answer: 46 kph
Explanation:
191 ÷ 4.15 = 46.02
It might not be right
how is meiosis like binary fission?
Why does the golf tee fall into the bottle when the hoop is pulled
Answer:
Gravity overcomes the hex nut's stationary inertia and moves the nut straight down into the bottle.
Explanation:
Hope this helps.
Have a good night ma´am/sir.
Be safe!
Answer Choices:
A
B
C
D
E
F
Answer:
B, C
Explanation:
hi! at point A, D, and F, the object is at a constant speed because the line is horizontal. at point E, the object's speed is increasing because of the line's positive slope. B and C show the object slowing down because the line has a negative slope.
hope this helps!
During a basketball game a kid tries to show off his fancy dribbling skills by going 3.5 m east and 5 m north. Dan is way too good to follow him through this unnecessary display. What magnitude and direction could Dan go to keep up with the other kid and only move in one straight line. Must show work for full credit
HELPP PLZZ
Answer:I litterly need a picture of this put the pic and Ill edit this question
Explanation:
how much time is required for an airplane to reach its takeoff speed of 77m/s if it starts from rest to average acceleration is 8.2 m/s
Answer:
t = 9.36 s
Explanation:
Given that,
Initial velocity, u = 0 (at rest)
Final velocity, v = 77 m/s
Acceleration of the airplane, a = 8.2 m/s²
We need to find the time required for an airplane to take off its speed 77 m/s. Let t be the time. using first equation of motion to find it as follows :
v=u+at
[tex]t=\dfrac{v-u}{a}\\\\t=\dfrac{77}{8.22}\\\\t=9.36\ s[/tex]
so, the airplane will take 9.36 seconds.
calculate the kinetic energy possessed by a uniformly moving body of mass 40 kg if it covers 800m in 40 seconds
Answer:
400J
Explanation:
s=d/t
s=800/40
s=20m/s
K.E= 1/2mv^2,
=1/2*40*20
=400 J
A car is initially moving at 10.5 m/s and accelerates uniformly to reach a speed of 21.7 m/s in 4.34 s. How far did the car move during this acceleration?
A. 69.9m
B. 6.99m
C. 69.6m/s
D. 6.99m/s
Answer:
A. 69.9m
Explanation:
Given parameters:
Initial velocity = 10.5m/s
Final velocity = 21.7m/s
Time = 4.34s
Unknown:
Distance traveled = ?
Solution:
Let us first find the acceleration of the car;
Acceleration = [tex]\frac{v - u}{t}[/tex]
v is final velocity
u is initial velocity
t is the time
Acceleration = [tex]\frac{21.7 - 10.5}{4.34}[/tex] = 2.58m/s²
Distance traveled;
V² = U² + 2aS
21.7² = 10.5² + 2 x 2.58 x S
360.64 = 2 x 2.58 x S
S = 69.9m
1. How do you relate the law of inertia to the balanced and unbalanced force?
??
Explanation:
I don't get you right
As we move through the visible spectrum, red to violet (right to left in the image), the wavelength __________ and the frequency ____________.
Eric is walking forwards at 0.5 m/s and then hears a black
bear charging from behind. He continues to move forward
and increases his speed to 10 m/s within 3 seconds. What was
Eric's acceleration?
0 3.2 m/s
O 3.2 m/s^2
0 -3.2 m/s^2
O 10 m/s^2
O Other:
Answer:
3.2 m/s^2
Explanation:
current velocity minus intitial velocity, divided by time: a=(v2-v1)/t
Why was Democritus considered a philosopher and not a scientist?
Answer:
Democritus had no scientific instruments to extend the reach of his senses, so all of his experiments were just 'mind experiments', but because Democritus was a philosopher, he thought more into depth about why we humans are alive which led to the atomic theory.
Explanation:
The distance is 10 meters. What is the variable?
is an atom with one valence electron more reactive than an atom with two electrone?
Answer:
An atom with a closed shell of valence electrons (corresponding to an electron configuration s2p6) tends to be chemically inert. An atom with one or two valence electrons more than a closed shell is highly reactive, because the extra valence electrons are easily removed to form a positive ion.Explanation:
someone pls help me will give brainlist
Answer:
The volume is 5.6 L
The mass is 100.2g
Explanation:
Quantitative observations are more based on numbers and values
You have finished running a marathon and you are relaxing and your body is
slowing down. What part of the autonomic nervous system is at work?
A. Sympathetic
B. Aphasic
C. Parasympathetic
D. Encoding
SUBMIT
According to Karl Marx, a communistic society would
be composed entirely of bourgeoisie
be composed entirely of bourgeoisie
be made up of capitalists and the proletariat
be made up of capitalists and the proletariat
have a wide variety of social classes
have a wide variety of social classes
be classless
Answer:
be classless
I think im not sure
Explanation:
Define Fundamental unit and Derived Unit
Which of these is formed by a hot spot in Earth's crust?
Answer:
we need to know what the choices are?
Explanation:
Answer:
A hot spot is a region deep within the Earth's mantle from which heat rises through the process of convection. This heat facilitates the melting of rock. The melted rock, known as magma, often pushes through cracks in the crust to form volcanoes.
A rubber band is shot parallel
