Answer:
joule
Explanation:
hop it helps give a good rate ples
Answer:
joule
Explanation:
to crossing over the flooded canal.
A. throwing
B. tossing
C. rolling
D. catching
E. running
F. jumping
G. hopping
(this are skills)
I need an answer ASAP
Answer:
F. jumping
Explanation:
you can't throw/toss yourself, you cant roll over water, catching?, you cant run over water, jumps are bigger than hops
A boy stands at a certain distance from a large building and blows a whistle. After 2.3s he hears the echo of the sound. He moves 50m towards the building and blows his whistle again; this time the echo reaches him after 2.0s. Calculate thei. Boys original distance from the building ii. Speed of sound in air
Answer:
I) 57.5 m
Il) 50 m/s
Explanation:
Given that a boy stands at a certain distance from a large building and blows a whistle.
After 2.3s he hears the echo of the sound. The speed V of the sound will be:
V = 2X / T
Where X is the distance covered
V = 2X / 2.3
V = 0.87X ...... (1)
He moves 50m towards the building and blows his whistle again; this time the echo reaches him after 2.0s.
V = (2×50) / 2
V = 50 m/s
Substitutes the V into equation 1
50 = 0.87X
X = 50 / 0.87
57.5 m
Therefore, the Boys original distance from the building is 57.5m and the
Speed of sound in air is 50m/s
is my answer correct plz explain i don't understand it.
Answer:
yes that is correct
Explanation:
The weight of a box having a mass of 100 kg is blank N
Answer:980 N
Explanation:
How far does a freely falling apple drop in 5.1 s after being released from rest?
Answer:
122.5 meters
Explanation:
g = 9.8 m/s^2 (standard value of g). so the freely falling body fall during the first 5 seconds will fall 122.5 meters if there is no external force work on it in an standard environment
The distance traveled by the apply after being released is 127.45 m.
The given parameters;
time of motion of the apple, t = 5.1 s
initial velocity of the apple, u = 0
The distance traveled by the apply is calculated by applying second kinematic equation as shown below.
Assuming downward motion to be positive.
[tex]s = ut + \frac{1}{2} gt^2\\\\s = 0 + 0.5\times 9.8 \times 5.1^2\\\\s = 127.45 \ m[/tex]
Thus, the distance traveled by the apply after being released is 127.45 m.
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Which elements listed below are most likely to form anions? Select all that apply. Lithium (Li) Calcium (Ca) Sulfur (S) Fluorine (F)
Answer: Li, S, F
Explanation:
They are all non-metallic elements
According to the electronic configuration, elements which will most likely form anions sulfur and fluorine .
What is electronic configuration?Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
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Some radio waves have a frequency of 4.8 × 10^9 Hz. Wave speed of electromagnetic waves = 3.0 × 10^8 m/s. Calculate the wavelength of the radio waves. Give your answer to 2 significant figures. Give the unit. *
4 points
Your answer
PLEASE HELP THANK YOU
Answer : The wavelength of the radio waves is [tex]6.2\times 10^{-2}m[/tex]
Explanation : Given,
Frequency = [tex]4.8\times 10^9 Hz[/tex]
Wave speed = [tex]3.0\times 10^8 m/s[/tex]
As we know that the speed of a wave is related to its frequency and wavelength.
Formula used:
[tex]\nu =f\times \lambda[/tex]
where,
[tex]\nu[/tex] is the wave speed in metres per second, (m/s )
f is the frequency in hertz, (Hz )
[tex]\lambda[/tex] is the wavelength in metres, (m)
Now putting all the given values in the above formula, we get:
[tex]3.0\times 10^8 m/s=(4.8\times 10^9 Hz)\times \lambda[/tex]
[tex]\lambda=6.2\times 10^{-2}m[/tex]
Therefore, the wavelength of the radio waves is [tex]6.2\times 10^{-2}m[/tex]
The wavelength of the radio waves is 0.063 m
Properties of wavesFrom the question, we are to determine the wavelength of the radio waves.
From the formula,
[tex]c = f \lambda[/tex]
Then, we can write that
[tex]\lambda = \frac{c}{f} [/tex]
Where c is the wave speed
[tex]f [/tex] is the frequency
and [tex]\lambda [/tex] is the wavelength
From the given information,
[tex]f = 4.8 \times 10^{9} \ Hz [/tex]
and [tex]c = 3.0 \times 10^{8} \ m/s[/tex]
Putting the parameters into the formula, we get
[tex]\lambda = \frac{3.0 \times 10^{8} }{4.8\times 10^{9} } [/tex]
[tex]\lambda = 0.625 \times 10^{-1} [/tex]
[tex]\lambda = 0.0625 \ m [/tex]
[tex]\lambda = 0.063 \ m [/tex] (to 2 significant figures)
Hence, the wavelength of the radio waves is 0.063 m
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Silicon slides are used in the manufacture of...........
Answer:
computer chips?
Explanation:
HELP!!!!
How long would it take Jesse with an acceleration of -2.50 m/s2 to bring his bicycle with an initial velocity of 13.5 m/s to a complete stop?
Answer:
5.4 seconds
Explanation:
use the formula v(final)= v(initial)+at
0=13.5-2.5t
-13.5=-2.5t
t=5.4
Ms. Reitman's scooter starts from rest and accelerates at 2.0 m/s2
What is the scooter's velocity after 2 s?
Answer: 4 m/s
Explanation:
The scooter's velocity after 2 seconds of its start will be 4 m/s.
State first equation of motion?
The first equation of motion is -
v = u + at
Given is Ms. Reitman's scooter that starts from rest and accelerates at
2 m/s².
We can write -
[a] = 2 m/s²
[t] = 2 s
Using the first equation of motion, we can write -
v = u + at
v = 0 + 2 x 2
v = 4 m/s
Therefore, the scooter's velocity after 2 seconds of its start will be 4 m/s.
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The mass is 2.0 kg. If the net force is 20.0 N, what is the acceleration?
Answer:
The answer is 10 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
where
f is the force
m is the mass
We have
[tex]a = \frac{20}{2} \\ [/tex]
We have the final answer as
10 m/s²Hope this helps you
Answer: BUTT
Explanation: Because its a Cheek;)
In a fruit basket there are 9 bananas, 4 apples, and 3 plums.
The ratio of plums to apples is _______
Answer:
3:4
Explanation:
Adhesion is when forces of the molecules are more strongly drawn to each other than the molecules in other substances true or false
Answer:
False
Explanation:
that is cohesion. adhesion is force between dissimilar molecules of a body
When the units are smaller,
we need (more / less) of them.
Answer:
more..................
Answer:
If you are referring units to the metric system, I think the answer would be less.
(I'm not completely sure)
Explanation:
I say this because for example, if you have a prescription for 5,000 mg of medicine, and upon getting it filled, the dosage than decimeters (dm), so you expect there to be more than one dm in a km. (Since you are going from a larger unit to a smaller unit, you multiply). Meters is larger than centimeters, so you expect your answer to be less than 7,225.
Hope this helps and makes sense! :D
Question 2 (4 points) The cause of heat cramps is the loss of sodium and potassium through heavy sweating? True False
Answer:
True
Explanation:
Lose of water content in our body through sweating and lose of essential salts such as potassium and sodium causes heat cramps...
Thank you
True or False. When energy changes form, some energy is lost to heat.
Group of answer choices
False
True
False
Explantion: Energy is neither generated nor lost and can only be transferred from one form to another. But all energy is not transformed from one form to another. Some of the energy is radiated in the form of heat.
Answer:
Explanation:
True. It’s possible when energy changes form, some energy is lost to heat.
To do work, this truck uses energy stored in chemical
fuel and an electrical battery.
How much total energy does this truck put out?
O 50J
250
O 400
Input
energy
? J
Kinetic
energy
400 J
0800 J
Heat
250 J
Friction
150 J
800 J Got it right on edgenuity
"To do work, this truck uses energy stored in chemical
fuel and an electrical battery.
How much total energy does this truck put out?"
For your question "To do work, this truck uses energy stored in chemical fuel and an electrical battery. How much total energy does this truck put out?"
The answer would be 800 J
400 + 250 + 150 = 800
A rock is dropped from a cliff that is 45 m high. How long does it take to hit the ground?
Answer:
It will take 6 seconds.
Explanation:
PLZ HELP :'3
How could you make a generator turn into a motor?
How could you make a motor turn into a generator?
Which one is more important, a motor or a generator? Defend your answer.
Which one would be more difficult to investigate, a motor or a generator? Defend your answer.
Answer:
1.Turn your DC motor into a generator by disconnecting your motor load and replacing it with a prime mover (probably a petrol engine), then disconnect your DC supply lines from the motor and connect them to your electrical load (lighting system, heating units, etc.), taking care to convert the shunt windings of your
2.Start the motor-generator turning by whatever means you have elected to use, such as a gasoline engine. The motor-generator must spin at 5 to 10 percent over its rated speed. Allow the motor-generator to run for 1 to 2 minutes.
Explanation:
why knowing how to graph movement can help you on a practical level?
When doing analysis of any kind, calculations can be assessed better using a graph.
What are the features of graph ?
A graph can be presented as pictorial form the of data of numeric values in an organized manner which helps the user to represent large amount of data in visual form.
There are two types of questions and the features of graphs are interpretation of given graphs or selecting a graph based on a verbal description.
The bar graphs are the most commonly used type of graph, other graphs are dot plots, histograms, line graphs and scatterplots.
A Bar Graph can be presented as the graphical display of data using rectangular bars of different parameters like heights, The structure can be represented in the y axis contains values, and the x axis contains categories or time periods.
A dot plot is a simple graphical representation which shows the frequency with which items appears in a data set and present data on the x axis.
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for any given motion the velocity is
Answer:
The velocity of an object refers to the rate at which the object's position changes. For any given motion, it is possible that an object could move very fast yet have an abnormally small
Formula:
velocity = distance travelled in a straight line/ time taken
Which of these is a chemical property of a substance?
a. color
b. melting point
c. reactivity
d. density
A toddler drops his pacifier from the Royal Gorge Bridge in Colorado. If the pacifier took 7.71 s to fall how fast was it traveling when it hit the water?
Answer:
75.56 m/s
Explanation:
The following data were obtained from the question:
Initial velocity (u) = 0 m/s
Time (t) = 7.71 s
Acceleration due to gravity (g) = 9.8 m/s²
Final velocity (v) =..?
Thus, we can obtain the velocity (v) with which the pacifier hit the water as follow:
v = u + gt
v = 0 + (9.8 × 7.71)
v = 0 + 75.558
v = 75.558 ≈ 75.56 m/s
Therefore, velocity with which the pacifier hit the water is 75.56 m/s
A physics student is adjusting the settings of their projectile launcher. If the Vx =
28 m/s and the Vy = 15 m/s, what is the magnitude of its velocity?
32 m/s
13 m/s
43 m/s
1009 m/s
Answer:
32m/s
Explanation:
obtained from V=vx square roo+ vy square root but all terms are squared.
What is the universal service obligation
Answer:
Universal service is an economic, legal and business term used mostly in regulated industries, referring to the practice of providing a baseline level of ser
Explanation:
From Google
Can I have brainliest
An astronaut is at rest in space while holding an asteroid. She pushes off the asteroid that has
more mass than she does. Which object will receive the greater impulse during the
separation?
A) the astronaut
B) the asteroid
C) they will both have equal but opposite impulses
D) they each will have zero impulse
What is the magnitude?
HURRY PLEASE SHOW THE WORK TOO!! A truck and a motorbike are at rest and are 900 m apart. They start moving toward, the car accelerates at a rate of 3.2 m/s2 and the motorcycle accelerates at a rate of 5.1 m/s2. At what position will each object pass each other relative to the starting point?
Answer:
They pass each other at 2415.79 m relative to the starting point.
Explanation:
Let s represent the distance moved by the car.
Since they are 900 m apart, it starts from rest and the truck moves at an acceleration of a = 3.2 m/s², we use
s - s₀ = ut + 1/2at² u = initial velocity = 0 (since it starts from rest) and s₀ = 900
s = 900 + 1/2 × 3.2 m/s² × t²
s = 900 + 1.6t²
Let s' represent the distance moved by the motorcycle.
Since it starts from rest and the motorcycle moves at an acceleration of a = 5.1 m/s², we use
s' - s₀' = ut + 1/2at² u = initial velocity = 0 (since it starts from rest) and s₀' = 0 (the starting point of the motorcycle)
s' = 0 + 1/2 × 5.1 m/s² × t²
s' = 2.55t²
At the point where they pass each other, s' = s
2.55t² = 900 + 1.6t²
collecting like terms, we find the time which they meet each other
2.55t² - 1.6t² = 900
0.95t² = 900
t² = 900/0.95
t = √(947.37)
t = 30.78 s
Substituting t into s', we have
s' = 2.55t²
= 2.55(30.78)²
= 2.55(947.37)
= 2415.79 m
So, they pass each other at 2415.79 m relative to the starting point.
Approximately how much time is needed to travel a 35 kilometers at 45 km/hr?
Answer:
The answer is 0.78 hrsExplanation:
To find the time taken given the velocity and distance we use the formula
[tex]t = \frac{d}{v} \\ [/tex]
where
d is the distance
v is the velocity
We have
[tex]t = \frac{35}{45} = \frac{7}{9} \\ = 0.77777...[/tex]
We have the final answer as
0.78 hrsHope this helps you
1. A plane travels a distance of 500
kilometers in 3600 seconds. What is the
average speed of the plane?
1.39 m/s
69.4 m/s
139 m/s
0.694 m/s
Answer:
Option C, 139 m/s
Explanation:
s = d/t
s = 500*10^3/3600
s = 138.8 = 139 m/s
How long it takes an object to move a certain distance if we know its average speed and the total distance it covers. As previously, it makes no difference whether the speed is constant or not; all that matters is the average distance travelled. Thus, option C is correct.
What average speed of the plane?The object's average speed is the total distance it travels in a predetermined amount of time. A scalar value represents the typical speed. It is characterized by the magnitude and lacks direction.
A body's average speed is its mean value over a given amount of time. Since a moving body's speed fluctuates over time and is not constant, an average speed formula is required.
Therefore, s = d/t s = 500×10^3/3600 s = 138.8 = 139 m/s. Distance travelled divided by time passed equals average speed.
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