Answer:
[tex] \fbox{ \text{See \: below}}[/tex]
Explanation:
[tex] \star[/tex] The unit of pressure i.e Pascal is derived from fundamental units : kilogram , metre and second. So , it is called a derived unit.
[tex] \text{Hope \: I \: helped ! }[/tex]
[tex] \text{Best \: regards !!}[/tex]
~[tex] \text{TheAnimeGirl}[/tex]
What is the net force on an object that is experiencing a force of 25 N north, a force of 25 N
south, a force of 50 N to the east and a force of 45 N to the west?
Answer:
net 5N of force will act in east direction.
Explanation:
force acting in North and South direction will cancel each other.
force in east direction - force in west direction = 5N
places of hot climate it is advised that outer walls of houses be painted white. Why?
Answer: In places of hot climate it is advised that the outer wall of houses be painted white because white color reflects heat and the houses do not heat up too much.
a child hits a ball with a force of 350 N. (a) If the ball and bat are in contact for 0.12 is, what impulse does the ball receive? (b) what is its change in momentum?
Explanation:
Given that,
Force with which a child hits a ball is 350 N
Time of contact is 0.12 s
We need to find the impulse received by the ball. The impulse delivered is given by :
[tex]J=F\times t\\\\J=350\times 0.12\\\\J=42\ N-m[/tex]
So, the impulse is 42 N-m..
We know that he change in momentum is also equal to the impulse delivered.
So, impulse = 42 N-m and change in momentum =42 N-m.
Help plssssss asap:(((
Answer:
5 blocks south
Explanation:
Answer:
5 blocks south
Explanation:
She ran 8 block south, then 3 blocks north.
8 - 3 = 5.
I don't know how to solve this, can I get a little help?
Explanation:
Acceleration is the change in velocity over change in time.
a = Δv / Δt
So it is the slope of the line of a velocity vs. time graph.
a = (10 m/s − 40 m/s) / (12 s − 0 s)
a = -2.5 m/s²
1. It takes 10 seconds for you to go to the cafeteria from the classroom and to
come back. Cafeteria is 20m away East to the classroom. What is your average
velocity?
Answer:
4 m/s East.
Explanation:
Velocity: This cam be defined as the rate of change of displacement. The unit of velocity is m/s.
From the question,
v = d/t...................... Equation 1
Where v = velocity, d = displacement, t = time.
Given: d = 20 m East, t = 5 seconds.
substitute into equation 1
v = 20/5
v = 4 m/s East.
Hence the average velocity = 4 m/s East.
Part B – Scientific Method
READ THIS STORY AND ANSWER THE QUESTIONS:
Joe baked a cake for his mother's birthday. When he removed the cake from the oven, Joe noticed that the cake had not risen. Joe guessed that the baking powder he had used was too old. He designed the following experiment to test his idea.
Joe prepared two cakes – one using the same ingredients as his first cake and one using fresh baking powder. After preheating the oven to 350°F, he placed both cakes in the oven for 30 minutes. After 30 minutes, he removed both cakes and noticed that neither one had risen. He decided that the baking powder wasn’t the cause of his problem.
What is Joe's hypothesis?
What is Joe's conclusion?
What did Joe’s observe?
What was the independent variable in Joe’s experiment?
What was the dependent variable in Joe’s experiment?
What was the control in Joe’s experiment?
What were the constants in Joe’s experiment (assuming he did it correctly)?
8. Based on his conclusion, what should Joe do next?
Answer:
1) Joe's hypothesis was that the baking powder he used was too old and that was why the cake did not rise
2) Joe concluded that the baking powder was not the cause of the cake not rising
3) Joe observed that the cake he made for his mother's birthday did not rise
4) The independent variable was the baking powder
5) The dependent variable was the rising cake
6) Joe's control in the experiment was the extra cake made using the same ingredient as the first
7) The constants were the heat and time to bake both cakes
8) He should recheck all the variables and constants (recipes and procedures) are correct as can be found in baking books
Explanation:
Answer: Please find the answers in the explanation
Explanation:
From the given description, when Joe noticed that the cake had not risen, he guessed that the baking powder he had used was too old.
Hypothesis is one of the scientific methods which means guessing.
What is Joe's hypothesis?
Joe's hypothesis is that the baking power used was not effective to make the cake rise believing that it was too old.
After Joe prepared two cakes, one using the same ingredients as his first cake and one using fresh baking powder. After preheating the oven to 350°F, he placed both cakes in the oven for 30 minutes. After 30 minutes, he removed both cakes and noticed that neither one had risen. He decided that the baking powder wasn’t the cause of his problem.
What is Joe's conclusion?
The conclusion is that the inability for the cake to rise wasn't as a result of ineffectiveness of the baking powder used.
What did Joe’s observe?
Joe observed that the cake had not risen.
What was the independent variable in Joe’s experiment?
The independent variable determines the dependent variable.
The independent variable is therefore, the different types of baking powder used.
What was the dependent variable in Joe’s experiment?
The dependent variable is the volume of the cakes.
What was the control in Joe’s experiment?
Joe was able to control the time and the temperature.
What were the constants in Joe’s experiment (assuming he did it correctly)?
The constant were the quantities of the cake ingredient, time used, and the temperature
8. Based on his conclusion, what should Joe do next?
Joe can try another ingredient like yeast or reconsider the ratio of the baking powder to the flour.
Simple Harmonic Motion: A simple harmonic oscillator oscillates with frequency f when its amplitude is A. If the amplitude is now doubled to 2A, what is the new frequency
Answer:
The frequency will still remain F
Explanation:
Firstly, we should remember that the frequency of a simple harmonic oscillator doesn't depend on the amplitude. Rather, it depends on the spring constant, k, and the mass of the attached weight, m. This means that the change in amplitude will not lead to a corresponding change in frequency.
the frequency is represented by the formula
f = 1/2π * √(k/m),
where
f = frequency of the oscillator
k = spring constant and
m = mass attached to the spring
From the formula above, we can state that the frequency doesn't depend on the amplitude at all, and as such, the amplitude changing from A to 2A, will effect no change in the frequency F.
Kangaroos have been clocked at speeds of 18 m/s. How far can a kangaroo hop in 192 sec at this speed?
[tex] \bf \underline{ \underline{given : }}[/tex]
Speed of kangaroo = 18 m/s Time taken by a kangaroo = 192 sec[tex]\bf \underline{ \underline{to \: be \: calculated : }}[/tex]
Calculate the distance covered by a kangaroo.
[tex]\bf \underline{ \underline{formula \: applied : }}[/tex]
[tex] \boxed{ \bf{Speed = \frac{Distance}{Time} }}[/tex]
[tex]\bf \underline{ \underline{Solution : }}[/tex]
We know that,
Speed = Distance/Time
=> Distance = Speed × Time
Substituting the values in the above formula,we get;
=> Distance = 18 × 192
=> Distance = 3456 m
Thus,the distance covered by a kangaroo is 3456 meters.
1. How many inches are in 6 meters?
Answer:
236.22 inches
Explanation:
There are 39.3701 inches in 1 meter. So to find 6 meters, multiply 6 times 39.3701.
6·39.3701=236.22
Answer:
236.22
Explanation:
just because itit's common sense
7. Una locomotora de 80.000 kilogramos de masa, parte del reposo y a los 10 segundos lleva una velocidad de 36Km/h. Halla: A. La aceleración del movimiento. B. La fuerza que causa el movimiento.
Answer:
a) La aceleración del movimiento es 1 metros por segundo al cuadrado, b) La fuerza que causa el movimiento es 80.000 newtons.
Explanation:
a) Supóngase que la locomotora acelera uniformemente, la aceleración se está descrita por la siguiente ecuación cinemática:
[tex]v = v_{o}+a\cdot t[/tex]
Donde:
[tex]v_{o}[/tex] - Rapidez inicial, medida en metros por segundo.
[tex]v[/tex] - Rapidez final, medida en metros por segundo.
[tex]a[/tex] - Aceleración, medida en metros por segundo al cuadrado.
[tex]t[/tex] - Tiempo, medido en segundos.
Se despeja la aceleración:
[tex]a = \frac{v-v_{o}}{t}[/tex]
Si [tex]v_{o} = 0\,\frac{m}{s}[/tex], [tex]v = 10\,\frac{m}{s}[/tex] y [tex]t = 10\,s[/tex], la aceleración del movimiento es:
[tex]a = \frac{10\,\frac{m}{s}-0\,\frac{m}{s}}{10\,s}[/tex]
[tex]a = 1\,\frac{m}{s^{2}}[/tex]
La aceleración del movimiento es 1 metros por segundo al cuadrado.
b) Dado que una locomotora es un sistema de masa constante, la fuerza ([tex]F[/tex]) que genera el movimiento es igual a:
[tex]F = m\cdot a[/tex]
Donde:
[tex]m[/tex] - Masa, medida en kilogramos.
[tex]a[/tex] - Aceleración, medida en metros por segundo al cuadrado.
Dados que [tex]m = 80.000\,kg[/tex] y [tex]a = 1\,\frac{m}{s^{2}}[/tex], la fuerza que causa el movimiento es:
[tex]F = (80.000\,kg)\cdot \left(1\,\frac{m}{s^{2}} \right)[/tex]
[tex]F = 80.000\,N[/tex]
La fuerza que causa el movimiento es 80.000 newtons.
Which statement best describes the similarities between fundamental forces? a Electromagnetic and strong nuclear forces influence the interaction between charged particles within an atom. b Gravitational and magnetic forces are the most alike because they are both types of charges that occur in nature. c Nuclear and magnetic forces are the most alike because they are both related to mass and weight. d Strong nuclear force is most like electrical force because they are both related to distance.
Answer:
a
Explanation:
............
..............option A
Answer:
A is the answer as electromagnetic and strong nuclear forces influence the interaction between charged particles within an atom the only difference being their intensity! Hope this helps :) and if you dont mind, mark me brainliest so i can get to the next rank :(
If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it will oscillate. If it is displaced a distance 0.110 m from its equilibrium position and released with zero initial speed. Then after a time 0.815 s its displacement is found to be a distance 0.110 m on the opposite side, and it has passed the equilibrium position once during this interval.
Find (a) the amplitude; (b) the period; (c) the frequency.
a)The amplitude of the wave will be 0.120m.
b)The period of the wave will be 1.60s.
What is the frequency?Frequency is defined as the number of repetitions of a wave occurring waves in 1 second.
a)The amplitude of the wave will be 0.120m.
A is the initial displacement =0.120m
The amplitude represents the largest deviation from equilibrium. So that the amplitude of the wave will be equal to the maximum position.
Hence the amplitude of the wave will be 0.120m.
b)The period of the wave will be 1.60s.
The movement from maximum positive displacement to maximum negative displacement. The time period will be;
[tex]\rm \frac{T}{2} = 0.800 \\\\\ T= 1.6 \ sec[/tex]
Hence the period of the wave will be 1.60s.
c) The frequency of the wave will be 0.625Hz.
The frequency is inversely proportional to the time period. Frequency is found as;
[tex]\rm f=\frac{1}{T} \\\\ \rm f=\frac{1}{0.625} \\\\ \rm f=0.625 \ Hz[/tex]
Hence the frequency of the wave will be 0.625Hz.
To learn more about the frequency reference the link;
https://brainly.com/question/14926605
when object goes under acceleration
a).a force always acys on it
b).its speed always increase
c).its velocity always increases
when object goes under acceleration
c).its velocity always increases
Additional information:-★ Acceleration: Rate of increase in velocity.
★ Velocity: Distance travelled by a body per unit time in given direction is called velocity .
Answer: velocity always increase
Explanation: Really dont need any explanation
Find the density of a substance that has a volume of 754 cm3 and a mass of 7,917 grams. Don't forget your units!
Answer:
[tex] \boxed{\sf Density \ of \ the \ substance = 10.5 \ g/cm^3} [/tex]
Given:
Mass (M) = 7917 grams
Volume (V)= 754 cm³
To Find:
Density of the substance
Explanation:
[tex] \boxed{ \bold{\sf Density \ (\rho) = \frac{Mass \: (M)}{Volume \: (V)}}}[/tex]
Substituting values of M & V in the equation:
[tex] \sf \implies \rho = \frac{7917}{754} [/tex]
[tex]\sf \implies \rho = 10.5 \: g/ {cm}^{3} [/tex]
Solve the following numerical problems. a) A load of 400N is liſted up by an effort of 100N. If load distance is 20cm, what will be the effort distance? (Ans 80cm)
Answer:
Solution
Load(L)=400
Effort(E)=100
Load distance (Ld)=20cm
Effort distance(Ed)=?
Now,from the principle of equilibrium
L×Ld=E×Ed
or,Ed=L×Ld/E
or,Ed=400×20/100
:.Ed=80cm and
Therefore,the effort distance will be 80cm
Answer:
80cm
Explanation:
load l = 400
Effort e = 100
load distance Ld = 20
Effort distance Ed = ?
L×ld= E×Ed
Ed=L×Ld \ E
Ed=400×20/100
Ed=80cm Ans
What is the standard unit for time
standerd unit of time is second
Answer:
The standard unit for time is second (s).
Se lanza una bala con una velocidad inicial de 200 m/s y con un ángulo de inclinación de 30º respecto a la horizontal. Si se considera g=10 m/s2. ¿Cuál es el alcance de la bala?
Answer:
El alcance de la bala es 3464,1 m.
Explanation:
El alcance de la bala se puede calcular como sigue:
[tex]y = y_{0} + tan(\theta)*x - \frac{g}{2}*\frac{x^{2}}{(v_{0}cos(\theta))^{2}}[/tex]
En donde:
y: es la altura final = 0
[tex]y_{0}[/tex]: es la altura inicial = 0
x: es el alcance
θ: es el angulo respecto a la horizontal = 30°
[tex]v_{0}[/tex]: es la velocidad inicial = 200 m/s
g: es la gravedad = 10 m/s²
Entonces, tenemos:
[tex] y = y_{0} + tan(\theta)*x - \frac{g}{2}*\frac{x^{2}}{(v_{0}cos(\theta))^{2}} [/tex]
[tex] x = \frac{2tan(\theta)*(v_{0}cos(\theta))^{2}}{g} = \frac{2tan(30)*(200 m/s*cos(30))^{2}}{10 m/s^{2}} = 3464,1 m [/tex]
Por lo tanto, el alcance de la bala es 3464,1 m.
Espero que se te sea de utilidad!
An object on the end of a spring is oscillating in simple harmonic motion. If the amplitude of oscillation is doubled, how does this affect the object’s maximum speed?
Answer:
The maximum speed of the oscillating object doubles as well.
Explanation:
The oscillatory motion of the object on the spring can be modelled using this equation below:
[tex]Vmax= A\omega[/tex]
Where
Vmax = the maximum speed of the oscillating object.
A = Amplitude of the oscillating object.
[tex]\omega[/tex] = angular velocity of the oscillating object.
If the amplitude, A becomes doubled, the new amplitude will be = 2A.
As a result, [tex]Vmax = 2 A \omega[/tex]
This shows that the maximum speed has doubled in its value
Consider three widely separated galaxies in an expanding universe. Imagine that you are located in galaxy 1 and observe that both galaxies 2 and 3 are moving away from you. If you asked an observer in galaxy 3 to describe how galaxy 2 appears to move, what would he or she say?
Answer:
The observer will say that galaxy 2 is moving away from galaxy 3 where he stands.
Explanation:
Since the galaxies are expanding, each one would move away from the others. Observers on all three galaxies have their frame of reference fixed on their own galaxies. Judging from their own galaxies, each observer will perceive the other galaxies moving away from his/or galaxy.
The observer at galaxy 3 will talk about galaxy 2 by doing is; he will say that galaxy 2 is moving far from him.
We are told that the universe is expanding and as such, the galaxies would be expanding and moving away from each other.
Since the galaxies are expanding, it means that they will be moving away from each other.
From time dilation principle, an observer at galaxy 3 will say that galaxy 2 is moving far from him.
Read more about galaxies at; https://brainly.com/question/21413373
Two students are watching a person riding a skateboard up and down a ramp. Each student shares what they think about the energy of the skateboarder as they ride up and down the ramp.
Elisa: I think the skateboarder has the more total energy at the top bottom of the ramp than the bottom of the ramp.
Raymond: I think the skateboarder has the same total energy at all points on the ramp.
Which student do you agree with? Why?
Answer:
The correct option is;
Raymond: I think the skateboarder has the same total energy at all points on the ramp
Explanation:
The total energy, also known as the total mechanical energy, is the sum of the kinetic and potential energies of the skateboarder
Given that the potential energy is the energy gained due to elevation, the maximum potential energy is obtained at the top of the ramp, while the maximum kinetic energy, which is the energy due to motion, is at the bottom of the ramp where the skateboarder moves fastest.
However, by the energy conservation principle, the kinetic energy of he skateboarder comes from the conversion of the potential energy, such that the total energy is the same at any particular point on the ramp.
the maximum speed limit on interstate 10 is 75 miles per hour. how many meters per second is this
Answer:
33.53m/sExplanation:
Given the maximum speed limit on interstate 10 as 75 miles per hour, to get the speed in meter per seconds, we need to convert the given speed to meter per seconds.
Using the conversion 1 mile = 1609.34m and 1 hour = 3600 seconds
75 miles perhour = 75miles/1 hour
75miles/1 hour (in m/s) = 75miles*1609.34m* 1 hour/1mile * 1 hour * 3600s *
= 75 *1609.34m* 1 /1 * 1 * 3600s
= 120,700.5m/3600s
= 33.53m/s
Hence the maximum speed limit on interstate 10 in metre per seconds is 33.53m/s
o
Question 4
1 pts
You jog around 180m track 4 times in 30 minutes. What is your average speed in
m/s? (Hint: Convert min to seconds first)
O 0.4 m/s
O 6 m/s
O 24 m/s
O O m/s
Answer:
0.4m/s
Explanation:
It is given speed so it is scalar.
distance covered in 1 round = 180m
therefore, distance covered in 4 rounds = 180*4 = 720m
time = 30 mins = 30*60 = 1800 seconds
average speed = total distance/total time taken
= 720/1800
= 0.4m/s
give an example of unbalanced force
Your question has been heard loud and clear.
Well , basically anything that moves in a certain direction is an example of unbalanced forces.
When we kick the football , the force given by our leg is greater than the frictional force by the ball and therefore the ball moves in the direction of the greater force , which is the force given by our leg.
Thank you
Answer:
friction
Explanation:
To expel hot air out of the kitchen, A has an exhaust fan fitted on the window of her kitchen and B has a similar exhaust fan fitted on the wall near the ceiling of the kitchen. Which one of the exhaust fan will expel the hot air more effectively? Explain why.
Answer:
Kitchen B
Explanation:
This all boils Down to the phenomenon of convection current of àir where warmer air rises up and is replaced by cooler air, the fan is placed higher up in B and because hot air rises higher up it will remove more hot air here
an object is placed at a distance of 10cm from a convex mirror of focal length 15 cm find the position and nature of the image
Answer:
[tex]\boxed{\sf Position \ of \ the \ image = 6 \ cm}[/tex]
[tex]\boxed{\sf Nature \ of \ the \ image = Virtual \ and \ Erect}[/tex]
Given:
Object distance (u) = -10 cm
Focal length (f) = 15 cm
To Find:
Image distance (v) and nature of the image
Explanation:
Mirror Formula:
[tex]\boxed{\bold{\sf \frac{1}{v} + \frac{1}{u} = \frac{1}{f}}}[/tex]
Substituting values of u and f in the equation:
[tex]\sf \implies \frac{1}{v} -\frac{1}{10} =\frac{1}{15}[/tex]
[tex]\sf \implies \frac{1}{v}=\frac{1}{15} +\frac{1}{10}[/tex]
[tex]\sf \implies \frac{1}{v}=\frac{2}{30}+\frac{3}{30}[/tex]
[tex]\sf \implies \frac{1}{v}=\frac{2+3}{30}[/tex]
[tex]\sf \implies \frac{1}{v}=\frac{5}{30}[/tex]
[tex]\sf \implies v=\frac{30}{5}[/tex]
[tex]\sf \implies v=6 \ cm[/tex]
[tex]\therefore[/tex]
Image distance (v) = 6 cm
Nature of the image = Virtual and Erect
Which of these item(s) are NOT mentioned in Stuff Matters? Leather Shoes Microphones Candles Jet Engine Teacup
Answer:
Leather Shoes, Microphones, Candles
Explanation:
Surprisingly, leather Shoes, Microphones, Candles were not mentioned in Stuff Matters a book written by Mark Miodownik which according to him explored "the marvelous things that shape our man-made world."
What are the balanced forces for someone in a parachute? A. Gravity and Earth B. Gravity and air resistance C. Gravity and centripetal D. Centripetal and air resistance
Answer:
B. Gravity and air resistance
Explanation:
Experimentation has proven that :
When the parachute opens, air resistance becomes much greater than gravity. The forces are no longer balanced and this changes the
speed
Answer:
[tex]\large \boxed{\mathrm{B. \ Gravity \ and \ air \ resistance}}[/tex]
Explanation:
Gravity and air resistance are the forces that get balanced out during a free fall. This is also known as terminal velocity, when gravity = air resistance.
The radius of a small ball is around 2.8436 cm. The radius of a basketball is about 4.22 times larger. What is the ratio of the surface areas of the small ball and a basketball? Part 2 What is the ratio of their volumes?
help please
Answer:
Explanation:
Both small ball and a basketball are in form of a sphere. Total surface area of a sphere is gotten using the formula;
surface area of a sphere S = 4πr²
If the radius of a small ball is around 2.8436 cm, its total surface area will be:
S = 4π(2.8436)²
S =4π(8.086)
S = 101.61 cm²
If the radius of a basketball is about 4.22 times larger, the radius will be 4 times larger as well. The radius of the basket ball = 4.22*2.8436
radius of thr basketball = 11.99cm
Surface area of the basketball S2 = 4π(11.99)²
S2 =4π(143.76)
S2 =1806.54cm²
The ratio of the surface areas of the small ball and a basketball S:S2
S:S2 = 101.61 cm² : 1806.54cm²
S:S2 = 0.0562
Hence, the ratio of the surface areas of the small ball and a basketball is approximately 0.0562.
2) The volume of a sphere = 4/3πr³
Volume of the small ball = 4/3π(2.8436)³
Volume of the small ball = 4/3 π * 22.994
Volume of the small ball= 96.315cm³
Similarly;
Volume of the basketball = 4/3π(11.99)³
Volume of the small ball = 4/3 π * 1723.68
Volume of the small ball= 7220.14cm³
The ratio of the volume of the small ball and a basketball V:V2
V:V2 = 96.315 : 7220.14
V:V2 = 0.01333
Hence, the ratio of the volumes of the small ball and a basketball is approximately 0.01333
A baseball player up to bat gets hit by a fast ball. What is the predominant type of force generated by the ball on the player? Explain your reasoning.
Answer:
Reaction force
Explanation:
According to Newton's third law of motion, for every action, there is an equal opposite reaction.
Hence the reaction force is often equal in magnitude to the applied force but acts in a direction opposite to the direction of the applied force.
Hence, when a baseball player, gets a hit, the ball exerts a reaction force on the player which is equal in magnitude to the force with which the player hits the ball but opposite in direction.