Answer:
the answer is 173 m/s
Explanation:
the the sound traveled from the dog to the building and back to the dog in 0.5 seconds, every second passes the sound travels 346 m/s but if half a second passes then we divide 346 by 2 and get 173 m/s.
A fish is swimming around the 720-meter perimeter of her pond. If she swims 10 laps in 120 minutes, what is her average speed in m/min
Answer:
60
Explanation:
Photosynthesis is an example of an exothermic chemical reaction in which plants use sunlight to make glucose and oxygen.
Please select the best answer from the choices provided
от
OF
Answer:
False
Explanation:
Why Carbonated drinks are homogeneous mixture
Answer: Explanation:
Carbonated drinks are mixtures of water, sugar, flavorings, and dissolved carbon dioxide gas. They are homogeneous because the ingredients are mixed together to form a consistent liquid.
A toy plane with a mass of 1.5 kg is flying in the air at 8.0 m/s. What is its kinetic energy?
Given : A toy plane has a mass of 1.5kg . It is flying in air at a speed of 8m/s .
To Find : The Kinetic energy of the plane .
Solution : The mass of the toy plane is 1.5kg and Velocity is 8.0 m / s . So we know the formula to find the kinetic energy as ,
[tex]\boxed{\red{\bf Energy_{Kinetic}=\dfrac{1}{2}mv^2}}[/tex]
On substituting the respective values,
⇒ KE = ½mv².
⇒ KE = ½ × 1.5 kg × (8 m/s)².
⇒ KE = ½ × 1.5 kg × 64m²/s² .
⇒ KE = 48 J .
Hence the Kinetic energy of the plane is 48Joules.
The kinetic energy of a plane having a mass of 1.5 kg flying in the air at 8.0 m / s is 48 J.
What is kinetic energy?Kinetic energy is a type of power that a moving object or particle possesses. When an object undergoes work, which involves the transfer of energy, by exerting a net force, the object accelerates and consequently obtains kinetic energy.
A moving object or particle has kinetic energy, which depends on both its mass and its rate of motion. The type of motion can be vibration, rotation on an axis, translation (or travel along a path from one place to another), or any combination of these.
Given:
The mass of the toy plane, m = 1.5 kg,
The velocity of the toy plane, v = 8 m / s,
Calculate the kinetic energy by the formula given below,
[tex]KE = 1/2mv^2[/tex]
Substitute the values,
KE = 1 / 2 × 1.5 × 8²
KE = 1 / 2 × 1.5 × 64
KE = 48 J
Therefore, the kinetic energy of a plane having a mass of 1.5 kg flying in the air at 8.0 m / s is 48 J.
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Three pucks A, B, and C are shown sliding across ice at the noted speeds. Air and ice friction forces
are negligible (they are assumed to not exist) Rank the forces needed to keep them moving
greatest to least. You must justify your answer
A=2 m/s
B= 4 m/s
C=6 m/s
The puck that required the greatest force to be stopped is puck C, followed by puck B and the least is puck A.
Applied force
The force needed to stop the pucks or applied to stop the pucks is determined by applying Newton's second law of motion as shown below;
F = ma
F = mv/t
where;
F is the applied forcem is the mass of the pucksv is the speed of the puckst is the timeFrom the quation above, the applied force is directly proportional to the speed of the pucks. Thus, the greater the speed of the puck, the greater the required force to stop the puck.
Therefore, the puck that required the greatest force to be stopped is puck C, followed by puck B and the least is puck A.
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A photo frame with a mass of 2.8 kg is hung from a nail according to the opposite figure. If we know that the nail is located exactly in the middle of the string and the frame does not touch the wall, how many newton is the tensile strength of the string?
Answer:
One string (side of) must support 1.4 kg.
T cos 15 = vertical force required by each side of the string
T cos15 = 1.4 * 9.8 N
T = 1.4 * 9.8 / cos 15 = 14.2 N
A car is driving down the highway at a 50 m/s. Suddenly, the driver sees an accident and slams on his breaks, coming to a complete stop in 10 seconds. How far did the car travel before coming to a stop?
Given parameters:
Speed of the car = 50m/s
Time = 10s
Unknown:
Distance traveled before the car stopped = ?
We need to establish speed - time - distance relationship.
Speed is the rate of change of distance with time. It is a scalar quantity .
Mathematically;
Speed = [tex]\frac{distance}{time}[/tex]
Distance = speed x time
Input the parameters and solve;
Distance = 50 x 10 = 500m
The car traveled 500m before it stopped.
PLESE HELP!! ILL MARK BRAINLYEST!!
Most of the energy released by nuclear fission is in the form of ________ rays.
A. alpha
B. beta
C. gamma
D. omega
The temperatures (in degrees Fahrenheit) in Long Island recorded by the weather bureau over a week were 42, 49, 53, 55, 50, 47, and 52. Which measure should the weather bureau use to calculate how far apart the upper and lower quartiles of the week's daily temperatures were?
Answer:
Inter Quartile Range
Explanation:
Quartile is a positional statistical average, which divided the data into 4 equal halves.
Q1 (Lower Quartile) has 25% data below it, 75% above it. Q3 (Upper Quartile) has 75% data below it, 25% above it.
Interquartile range is the measure used to calculate how far the lower & upper quartiles are.
Which three statements could explain the increase in the deer population? A. Rainfall was above average over the past five years B. A hawk species settled into the area five years ago C. Extremely harsh winters occurred during the past five years D. The number of cattle ranchers decreased in the past five years E. The law allowed an extended wolf hunting season for the past five years
Answer:
D. The number of cattle ranchers decreased in the past five years
Explanation:
According to Jennifer M Schieltz and Daniel I Rubenstein (2016), "More than a quarter of earth's land surface is used for grazing domestic livestock." This has negative effects on availability of pasture for herbivorous wildlife such as the deer.
Increase in the number of cattle ranchers decreases the availability of pasture and vice versa.
Hence, the decrease in the number of cattle ranchers over the past five years led to an increase in the deer population due to a decrease in competition for pasture.
How many different relationships do the great white sharks have? (Science)
Answer:
three symbiotic relationships
The great white shark has each of the three symbiotic relationships. It has a commensalistic relationship with the remora because the remora cleans the shark's body and the shark is unaffected. It has a Parasitic relationship with the germ ommatokoita elongata because the germ is benifited and the shark is harmed.
plz mark brainliest
Give 5 examples of physical properties that could be used to describe a solid
PLEASSSE HURRY!!
The sum of all of the chemical reactions occurring in a cell is called
A) photosynthesis
B) diffusion
C) oxidative respiration
D) metabolism
Answer:
d
Explanation:
i am smart
Why do you think the area of environmental science has been in existence for the last fifty to sixty years?
Answer:
Because environmental history deals with some of the most important issues regarding the future of our planet. The hi/story of nature parks around the globe. understand the impact of humans on pollution and health. It opens our eyes for the scarcity of resources and for their conservation into the future.
Explanation:
:-)
As shown in the figure below, Jenna rushes 30 m toward her truck. She notices she forgot her jacket and
returns back to the house. Her total travel time is 75 s.
30 m
30 m
What is Jenna's average velocity over the 75 s period?
What is Jenna's average speed over the 75 s period?
Answer:
Average Velocity: 0
Average Speed 0.8
Explanation:
Velocity - (30-30)/75 = 0
Speed - (30+30)/75 = 0.8
PLZ HELP!
The image here shows four soccer balls at four different locations on an uneven soccer field very near sea level. Which soccer ball has the greatest amount of potential energy?
Ball B
Ball C
Ball A
Ball D
Answer:
The answer is B.
Explanation:
Because that's the one that's more-so higher up than the other soccer balls. This grants the ball to have higher potential energy than the rest.
Quote:
"Your body is as weak as your soul, so it is easy to separate the two."
- Akuma
The ball b would have the greatest amount of the potential energy as the mass of each ball is the same then the ball on the highest altitude would have the greatest amount of the potential energy contained with it.
What is mechanical energy?Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total stored energy in the system which is represented by total potential energy.
The mechanical energy = potential energy + kinetic energy
As given in the problem, the image here shows four soccer balls at four different locations on an uneven soccer field very near sea level.
The potential energy of the ball = mass×gravity×height
Since each ball's mass is the same, the ball at the highest altitude would have the most potential energy within it. As a result, ball b would have the greatest quantity of potential energy.
Thus,the correct answer is option A.
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In what direction must he walk in order to return to his original position?
30 degrees N of W
40 degrees N of W
40 degrees NW
50 degrees N of W
A rectangular field has one side fence 500m land and another side fond zoom
Answer:
40 dedrees south
Answer:
40 degrees south
Explanation:
What is the momentum of an object with a mass of 60 kg and velocity of 10 m/s?
heeelp
Answer:
Linear momentum= Mass*Velocity
P=mv
P=60*10
P=600Kg m/s
pleasee helpppppp !!
Answer:
I think... i think it's position 3
Explanation:
A projectile is launched at an angle above the ground. (upwards). The vertical
component of the projectile's velocity is initially 30 m/s. What is the vertical velocity
after 2.0 seconds of flight?
A climber of mass m slides down a vertical rope with an average acceleration a. What is the average frictional force exerted by the rope on the climber?
Answer:
m(g - a)
Explanation:
Since he slides with a mass 'm' and acceleration of "a", it means he is sliding in the position of gravity. Thus, Force = ma
Now, the force due to gravity = mg
The overall acceleration of the climber is downward along the rope. So "ma" is negative. Now, the only external forces acting on the person will be the force of gravity acting downward (W = mg) and the supporting Frictional Force F_f.
Thus, the net average frictional force of exerted by the rope on the climber will be;
mg - F_f - ma = 0
F_f = mg - ma
F_f = m(g - a)
carbon show some unique property name them name them
Answer:
Physical Properties of Carbon:
Carbon is a unique element. It occurs in many forms. Some examples of the pure form of carbon are coal and soot.
It is soft and dull grey or black in colour.
One of the most important compounds of carbon is the charcoal, which is formed when carbon is heated in the absence in of air.
It occurs in a number of allotropic forms. Allotropes are nothing but forms of an element with varying physical as well as chemical properties.
The density of the different forms of carbon depends upon the origin of these elements. You will find some forms of carbon which are pure and some forms which are not pure like coal which is the mixture of both carbon and hydrogen.
Chemical Properties of Carbon
Carbon compounds generally show 4 reactions, they are
Combustion reaction
Oxidation reaction,
Addition reactions
Substitution reaction.
As we all know that carbon in all forms needs oxygen, heat, and light and forms carbon dioxide. When it is burned in air to give carbon dioxide, it is called as combustion.
Let us get the concept of this using some examples when it is burnt in the air: When methane CH4 is burnt in the presence of oxygen it gives us carbon dioxide, heat, and light.
Explanation:
Net force = ?
Net force = ?
1
6 N
The net force for example A is
NA
The net force for example B is NA
The net force for example A is 4N. The net force for example B is 3N.The net force with N will be calculated by following formulas
FNet = F1 + F2 + F3…. + FN.
FNet = Fa + Fg.
FNet = Fa + Fg + Ff + FN.
where N is the number of forces acting on the body.
What kind of force is 1 N?This definition refers to the force required to accelerate a kilogram of mass by one meter per second. In the foot-pound-second (English, or customary) system, one newton is equivalent to roughly 0.2248 pounds of force, or 100,000 dynes in the centimeter-gram-second (CGS) system.
How does net force appear?A car, for instance, has a net force of zero even though it is moving when it is driving at a steady 50 mph on the highway due to the lack of acceleration.
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A student ties a ball at the end of a string and whirls the string at a constant speed. If the radius of the circle along which the ball moves is 1.2 m and the acceleration is 7.5 m/s2what is the speed of the ball?
a = v ² / R
where a is acceleration, v is speed, and R is the radius. So
7.5 m/s² = v ² / (1.2 m)
v ² = (7.5 m/s²) / (1.2 m)
v ≈ 6.8 m/s
A tennis ball is thrown straight up into the air with an initial velocity of 38 m/s.
a. How long does it take to reach its highest point?
b. How high does the ball travel?
Answer:
a) 3.9s
b)74m
Explanation:
a) v=u+at
0=38+(-9.8)t
-38=-9.8t
t=-38/-9.8
t=3.877s
t=3.9s
b) s=ut+1/2at²
s=(38×3.9)+1/2(-9.8×3.9²)
s=148.2 -74.529
s=73.671
s=74m
How would YOU define speed?
Answer:
Speed is a way of measuring how quickly something is moving or being done, or something moving fast. An example of speed is a car being driven 45 miles per hour. An example of speed is someone cleaning a room in 10 minutes.
The distance is 10 meters. What is the variable?
a 0.11kg moving hockey puck is caught by a 80kg goalie who then slides on the frictionless ice at 0.076 m/s. What was the initial velocity of the hockey puck
Answer:
55mph
Explanation:
a 0.11kg moving hockey puck is caught by a 80kg goalie who then slides on the frictionless ice at 0.076 m/s. the initial velocity of the hockey puck was 55mph
what is velocity ?Velocity is a parameter which can be defined as the rate at which the object change the position with respect to time, basically speeding the object in a specific direction.
It is a vector quantity which shows both magnitude and direction and The SI unit of velocity is meter per second (ms-1). the change in magnitude or the direction of velocity of a body, then it is said to be accelerated.
Finding the total velocity is simple but few calculations and basic conceptual knowledge are needed.
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A truck heading east has an initial velocity of 6 m/s. It accelerates at 2 m/s2 for 12 seconds. What distance does the truck travel in the given time?
84 m
144 m
216 m
360 m
The answer (distance) is:
216mThe distance of the truck in the given time is 216 m.
How do you find displacement with velocity and acceleration?
Displacement (s) of an object equals, velocity (u) times time (t), plus ½ times acceleration (a) times time squared (t2). Use standard gravity, a = 9.80665 m/s2, for equations involving the Earth's gravitational force as the acceleration rate of an object.
How do you find velocity from acceleration?
Multiply the acceleration by time to obtain the velocity change: velocity change = 6.95 * 4 = 27.8 m/s . Since the initial velocity was zero, the final velocity is equal to the change in speed. You can convert units to km/h by multiplying the result by 3.6: 27.8 * 3.6 ≈ 100 km/h.
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Identify two changes in your world that might occur if funding for scientific research were cut drastically
Answer:
Little to no scientific advancement
More wide spread diseases
Explanation: