Answer:
Explanation:
The initial velocity of the baseball is:
[tex]v_i^{\to}= 47.0 \ m/s[/tex]
From velocity of baseball;
[tex]v_f ^{\to} = -59 cos 29^0 \hat i + 59 sin \ 29 \hat j \\ \\ \implies -51.60 \hat i + 28.60 \hat j[/tex]
[tex]Average \ force <F^{\to}> = \dfrac{\Delta P ^{\to }}{t} \\ \\ \implies \dfrac{m(v_f^{\to }- v_i ^{\to}}{t} \\ \\ \implies \dfrac{0.145(-51.60 \hat i +28.60 \hat j -31 \jat i)}{1.71 \times 10^{-3}} \\ \\ <F^{\to}> = \dfrac{11.98 \hat i + 3.857 \hat j }{1.71\times 10^{-3}} \\ \\ <F^{\to}> =7005.85 \hat i + 2255.56\hat j \\ \\ <F^{\to}>= (701 \times 10^1 , 226 \times 10^1) \ Newton[/tex]
AAAAAAAAA HELP QUICK PLS!!!
How do we measure the average kinetic motion of molecules in a solution?
Thank you <3
Definition of continental polar
cold, dry, and stable air masses .
You connect three resistors with resistances R, 2R, and 3R in parallel. The equivalent resistance of the three resistors will have a value that is:_______
a. less than R.
b. between R and 2R.
c. greater than 3R.
d. between 2R and 3R.
Less than R, less than 2R, less than 3R, and less than any other possible hookup of any one, any two, or all three of these resistors.
4. Which of the following is the DNA sequence that a restriction enzyme binds to?
Answer:
DNA ligase
Explanation:
DNA Ligase is the enzyme that binds fragments of DNA together by forming two phosphodiester bonds between the 3' hydroxyl end of one nucleotide with the 5' phosphate end of the other. This reaction requires the hydrolysis of ATP.
Find the velocity of an object that has a mass of 500x10-6 kg and a charge of 1pc if it starts from
rest and passes through a potential difference of 120kV
Answer:
v = 4.8 10⁻⁴ m / s
Explanation:
To solve this exercise we can use the concepts of energy. In this case the potential energy is transformed into kinetic energy
U = K
q V = ½ m v²
v = [tex]\sqrt { \frac{2qV}{m} }[/tex]
in the exercise they indicate the value of the charge q₁ = 1 pC = 1 10⁻¹² C
let's calculate
v = [tex]\sqrt{ \frac{2 \ 1 \ 10^{-12} 120 \ 10^3}{500 ^{2} }[/tex]
v = 4.8 10⁻⁴ m / s
why do you say that they are good conductors of heat and electricity?
Answer:
because they conduct heat and electricity and vibrate the neighboring molecules
plz mark me branliest
Can someone pls help! I’m stuck on c and d. I’ll rate your answer the brainliest
Answer:
i think is c
Explanation:
Answer:
C
Explanation:
C makes more sense than D, Because it says the minimum value is when it stays at rest.
It’s 1 &2 question ! please zoom in to see it clearly :)
Answer:
1. C
2. D
Explanation:
1. as the object is stationary despite Jamal applying 100N forces, it suggests that the object is applying an equal amount of force on the opposite direction that is opposing the force applied by Jamal.
2. inertia is a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
hope it helps. :)
a violin is less than 0.5 m long. a bass fiddle is more than 1.5 m long. which instrument do you expect to be able to play notes with a lower pitch and why?
Explanation:
When there is a high frequency sound the speed of the vibrations is faster and makes a high pitch sound. When there is a low frequency sound the speed of the vibrations is slower and makes a lower pitch sound.
Low air pressure and warm temperatures over land are most likely to result in which of the following weather conditions or events?
A.Clear sunny skies
B. tropical hurricane
C. chance of snow
D.Cloudy skies with rain
Find net capacitance of the circuit diagram
I bet no one can solve this correctly
I hate these ! And right now I'm not too crazy over you either, for posting it.
Ordinarily, as soon as I spot one like this, I would ignore it, close my eyes, and run away. But you slapped me in the face with the glove, threw it down on the floor, and challenged my honor with your silly challenge. So I could not run away. I had to stay and sweat it out.
I have to throw out a number. But before I do that, I want you to know that I sat here, stared at the picture on my phone, and solved the circuit in my head.
So there !
Take that !
(I sure hope I'm correct.)
The net capacitance between points A and B in this circuit is (15/41)•C. That would be about 0.366 C .
That's my answer and I'm stickin to it.
Unless you say I'm wrong. In that case I'll have to get serious and try it again, but with a pencil.
a particle moves along of the x_axis according to the equation X=2t+3t^2, whare x is in m and t is in second. calcualt the instantaneous velocity and the instantaneous acceleration in t=3s
Answer:
Instantaneous velocity [tex]= 20[/tex] meter per second
Instantaneous acceleration [tex]= 6[/tex] meter per second square
Explanation:
Given equation of distance X = [tex]2t+3t^2[/tex]
Instantaneous velocity [tex]= \frac{dX}{dt}[/tex] [tex]= 2 + 6 t[/tex]
Substituting the value of t = 3 seconds, we get -
[tex]\frac{dX}{dt} = 2 + 6*3 = 20[/tex] meter per second
Instantaneous acceleration [tex]= \frac{d^2X}{dt^2}[/tex] [tex]= 6[/tex] meter per second square
advice students on how to manage stress throughout their studies
Answer:
Drink water
Make your find fresh by doing the stuff you love too ❤️
There is only one temperature where the Celsius and Fahrenheit thermometers will read the same and no conversions need to be made. What is it?
A. -25 degrees
B. -40 degrees
C. 25 degrees
D. 0 degrees
Answer:
-40 degrees
Explanation:
I just took the Temperature Quiz and got it right. :)
A centrifuge in a medical laboratory rotates at an angular speed of 3600 rev/min. When switched off, it rotates through 52.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge.
Answer:
[tex]-217.508\ \text{rad/s}^2[/tex]
Explanation:
[tex]\omega_i[/tex] = Initial angular velocity = [tex]3600\times\dfrac{2\pi}{60}=377\ \text{rad/s}[/tex]
[tex]\theta[/tex] = Angular displacement = [tex]52\ \text{rev}=52\times 2\pi=326.72\ \text{rad}[/tex]
[tex]\omega_f[/tex] = Final angular velocity = 0
[tex]\alpha[/tex] = Angular acceleration
From the kinematic equations of angular motion we have
[tex]\omega_f^2-\omega_i^2=2\alpha\theta\\\Rightarrow \alpha=\dfrac{\omega_f^2-\omega_i^2}{2\theta}\\\Rightarrow \alpha=\dfrac{0-377^2}{2\times 326.72}\\\Rightarrow \alpha=-217.508\ \text{rad/s}^2[/tex]
The constant angular acceleration of the centrifuge is [tex]-217.508\ \text{rad/s}^2[/tex].
PLZ WHAT I DOO
I BROKE A WINDOW WHAT I DO
Hmmmm, you either tell your parent, try to fix it, or blame it on the dog with a baseball bat that always comes on your yard and tries to eat you.
o(*￣▽￣*)ブ
what is the minimum effort required to raise the block?
Answer:
2000 N.
Explanation:
From the question given above, the following data were obtained:
Load (L) = 8000 N
Mechanical advantage (MA) = 4
Effort (E) =?
The mechanical advantage of a machine is simply defined as:
Mechanical advantage = Load / Effort
MA = L / E
With the above formula, we can obtain the effort used to raise the load of 8000 N as follow:
Load (L) = 8000 N
Mechanical advantage (MA) = 4
Effort (E) =?
MA = L / E
4 = 8000 / E
Cross multiply
4 × E = 8000
Divide both side by 4
E = 8000 / 4
E = 2000 N
Thus, the effort used to raised the load is 2000 N.
A wave speed in a piano string of linear density 5.0 g/m is 140 m/s. What is the tension in the string?
Answer:
The tension in the string is 98 newtons.
Explanation:
Since a mecanical wave is propagated throughout the material of the string under tension, which is calculated by using the following formula:
[tex]T = v^{2}\cdot \mu[/tex] (1)
Where:
[tex]T[/tex] - Tension in the string, in newtons.
[tex]v[/tex] - Wave speed, in meters per second.
[tex]\mu[/tex] - Linear density, in kilograms per second.
If we know that [tex]v = 140\,\frac{m}{s}[/tex] and [tex]\mu = 5\times 10^{-3}\,\frac{kg}{m}[/tex], then the tension in the string is:
[tex]T = v^{2}\cdot \mu[/tex]
[tex]T = 98\,N[/tex]
The tension in the string is 98 newtons.
The power is inversely proportional with time
Answer:
True
Explanation:
Given that Power whose unit is Watt equates to one joule of work per second. It implies that Power is directly proportional to the work done and inversely proportional to the time to do the work.
Therefore, in this case, the right answer to the question is that it is TRUE that the power is inversely proportional with time
which instrument fan be used to measure heat
for sure thermometers and pryometers as I just learned and did some search ing. so these are. two classes of the heat measure measurement s! your welcomes!!
you can probably find out more of this and other stuff on here for more information scientificamerican
The net force experienced by an object is increased. What affect does this have on the acceleration of the object?
Answer:
The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.
Explanation:
hope it helps pls give me brainless
Calculate the volume occupied by a glass cup having a mass of 260 g knowing that the
density of glass is equal to 2.6 g/cm3
Answer:
100 milliliters
Explanation:
What number belongs where "X" is to properly balance this equation?
2 NaCl →
2 Na + Ecl2
04
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2.
оо
Answer:
Option D: 1
Explanation:
The chemical equation given is;
2NaCl = 2Na + XCl2
We want to find the value of X.
On the left hand side, we can see we have 2 moles of both Na and Cl.
On the right hand side, we can see that we have 2 moles of Na and also 2 moles of Cl. Thus, the equation is balanced and as such X = 1
Dynamic stretching is a series of movements that warm up the body before an intended activity. Which dynamic stretch would warm an individual before a one mile run
Answer:
They would likely do a whole series of dynamic stretches
Explanation:
It would include warming up the body and then dynamically stretching the lower body, and some upper body as well. This isn't a question with one specific answer
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of a single wavelength. It then falls on two slits separated by 0.460 mm. In the resulting interference pattern on a screen 2.20 m away, adjacent bright fringes are separated by 2.82 mm. What is the wavelength of the light that falls on the slits
Answer:
[tex]5.896\times 10^{-7}\ \text{m}[/tex]
Explanation:
D = Distance of the screen from the light source = 2.2 m
d = Distance between slits = 0.46 mm
m = Order
Distance between adjacent bright fringes is 2.82 m
[tex]y_{m+1}-y_m=2.82\ \text{mm}\\\Rightarrow \dfrac{D(m+1)\lambda}{d}-\dfrac{Dm\lambda}{d}=2.82\times 10^{-3}\\\Rightarrow \dfrac{D\lambda}{d}(m+1-m)=2.82\times 10^{-3}\\\Rightarrow \lambda=\dfrac{d}{D}2.82\times 10^{-3}\\\Rightarrow \lambda=\dfrac{0.46\times 10^{-3}\times 2.82\times 10^{-3}}{2.2}\\\Rightarrow \lambda=5.896\times 10^{-7}\ \text{m}[/tex]
The wavelength of the light that falls on the slits is [tex]5.896\times 10^{-7}\ \text{m}[/tex].
Part C
What happens when you increase the frequency of the water drops? What happens to the wavelength of the waves ont
surface of water?
Answer:the wave lengths are shorter and faster
Explanation:
Plato
I really need the answer
Answer:
The first answer is correct. All of the other options include sound, which travels by material force, and can not be transmitted in a vacuum. Infra-red, radio, and microwaves are all different frequencies of light, and can thus travel through a vacuum.
Make a claim about which fossil in the diagram is the oldest. Use evidence and scientific reasoning to support your claim.
From the diagram, the fossil of fish is considered the oldest fossil. Because the oldest fossils are formed at the bottom whereas the others are at the top of the soil.
What are the fossils?When living organisms like plants, animals, and human beings are died, their bodies get buried in the form of sediments in the sand, rock water bodies, etc..,
It also includes the preserved remains of life for more than 10,000 years. It is the preserved remains, sediments, and impressions to trace the life of the organisms and their behavior.
When living organisms died and are buried in sand or mud, the tissues of living organisms get decomposed leaving the bones which is harder. After the organisms are buried in the sand or mud, several sediments, and sand was built over the top of the buried organisms.
These sand and sediments over the buried organisms eventually form the layer of rocks. This is how fossils are made and these fossils were identified when the rocks were broken or by cause of soil erosion.
The age of the fossils was identified by the stacks of layered rocks with the help of the superposition principle. The oldest fossils are present at the bottom of the rocks whereas the youngest fossils are present at the top of the rocks. This process is called Relative dating.
Hence, from the given diagram the fossil of fish is present at the bottom of the rock unlike the others fossils like monkeys and lizard. Thus, the oldest fossil is fish and the youngest one is a monkey.
To learn more about the Fossils:
https://brainly.com/question/31419516
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the
11. A sinusoidal A.C has a maximum value of 15A.
1) What are its r.m.s values?
ii) If the time is recorded from the instant the current is zero and is becoming
positive, what is the instantaneous value of the current after 1/300s, given the
frequency is 50 Hz.
Answer:
1.) 10.61 A
2.) 0.27 A
Explanation:
Given that a sinusoidal A.C has a maximum value of 15A.
1) What are its r.m.s values?
ii) If the time is recorded from the instant the current is zero and is becoming
positive, what is the instantaneous value of the current after 1/300s, given the
frequency is 50 Hz.
Solution.
1.)
The r.m.s current = peak current/root 2
The r.m.s current = 0.7071 × 15
The r.m.s current = 10.61 A
2.)
Given that
Time = 1/300 s
Frequency = 50 Hz
Instantaneous current can be calculated by using the formula
I = I sin wt
Where w = 2πf
Instantaneous current = 15( sin 2πft)
I = 15 × sin ( 2 × 3.143 × 50 × 1/300 )
I = 15 × sin ( 1.047 )
I = 15 × 0.01827
I = 0.27 A
Therefore, the instantaneous current is 0.27A
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Answer:
LEKWKKAKDJFKWNFKWFF
Explanation:
INLOVE THE WORDS U USE THERE