Answers
Answer:
should be A
Explanation:
there isn't a 3, so it must be his deceleration, which would be 5-3=2
Related Questions
9. What is NOT true about the Body Composition Assessment?
It can be measured using skin calipers, a water test, and body composition scales.
OBMI is an indirect body composition measuring method using your weight and height.
ОО
Your weight alone can determine the percentages of your body's composition.
OBMI can be a reliable indicator of body composition.
Answers
Answer: Your weight alone can determine the percentages of your body's composition
Explanation:
C. Your weight alone can determine the percentages of your body's composition.
What is Body Composition Assessment?
Body composition analysis is the assessment of the proportion of fat to fat-free mass in your body.
Performing Body Composition Assessment will tell you your own body's unique makeup and help you identify areas to work on to improve your overall health and wellness.
Thus, the statement that is NOT true about the Body Composition Assessment is your weight alone can determine the percentages of your body's composition.
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Why would you have to know how to convert measurements when looking at a technical drawing?
Answers
1.) When examining technical drawings, conversion of dimensions is crucial knowledge to have. A person with measurement skills may use an object's shape to determine its sides, angles, area, and volume. If he is aware of these factors, he will be able to modify a sketch or design if the need arises.
If someone knows how to convert a measurement to a system that the other person is familiar with, they can do so when working with someone who is unfamiliar with the measuring system.
2.) Units have a crucial role. No meaning is given to numbers without units in scientific computations. For instance, if someone asks a shopkeeper for three rice, the shopkeeper may not grasp what he means, but if he is told that the customer wants three kilograms of rice, the shopkeeper will. Because the value of anything in one system of units may differ from that of the other, you need also be familiar with unit conversion into other systems (Metric, SI). Understanding units in this way can help with numerous issues.
An object or event's attributes are quantified through measurement so that they can be compared to those of other things or occurrences. Therefore, measurement is the process of determining the size or smallness of a physical quantity in relation to a primary reference quantity of a similar kind. The act or system of measuring is referred to as measurement. It can be viewed as a procedure for utilizing numbers to define physical objects. In this post, you can read more about measurement units and conversion.
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The INTRODUCTION, METHODOLOGY AND CALCULATIONS and explanation of the experiment should use formulas from one of these topics as well as information should include one of these topic that works with heron fountain such as gravitational potential energy: 3.1 work of a strength. 3.2 Kinetic energy of a punctual body. 3.3 Power and efficiency. 3.4 Potential energy. 3.5 Forces conservative. 3.6 Conservation of energy. 3.7 Principle of momentum and amount of movement. 3.8 Preservation of the amount of movement. 3.9law of gravitation universal.
1. INTRODUCTION
2. METHODOLOGY
3. CALCULATIONS
Answers
The Heron's fountain demonstrates the principles of fluid mechanics through the transfer of energy between containers. By applying conservation of energy and momentum, the calculations reveal the potential and kinetic energy involved in the system.
Introduction
The Heron’s fountain, named after Heron of Alexandria, a Greek inventor who lived in 1st century AD, is an ancient device that is often used for the purpose of explaining the basic principles of fluid mechanics.
It is a simple device that uses the force of gravity and the laws of physics to create a self-sustaining fountain. The basic idea behind the Heron’s fountain is that the weight of the water in the top container pushes down on the air in the bottom container, forcing the water to flow out of the spout and into the bottom container.
Methodology
The methodology of this experiment involves building a Heron’s fountain and then conducting various experiments to determine the amount of energy that is being transferred between the containers.
The basic components of the Heron’s fountain include three containers of varying sizes, a pump, a spout, and some tubing. The water is pumped into the top container and then flows out of the spout and into the bottom container. The air in the bottom container is then compressed, forcing the water back up into the top container.
Calculations
The calculations for this experiment will involve the use of the principles of conservation of energy and momentum. The basic idea is that the amount of energy that is being transferred between the containers is equal to the change in potential energy and kinetic energy of the water.
The formula for the potential energy of the water is mgh, The formula for the kinetic energy of the water is ½ mv2, The formula for the conservation of momentum is m1v1 + m2v2 = (m1 + m2)v,Learn more about Heron's fountain: brainly.com/question/14582258
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The x-velocity of a horizontal projectile is always ___. The initial y-velocity of a horizontal projectile is always ___
Answers
Answer: constant and horizontal; changing (usually increasing) and downward
Explanation:
in a projectile, there is not horizontal acceleration (unless friction), which means the velocity is constant horizontally. vertically, there is gravity so that the vertical velocity would be increasing, zero at the top, and then decreasing, and the y vector pointing downwards
A high diver dives off a platform and strikes the water 1.857 seconds later. Ignoring air resistance, how fast is he traveling as he strikes the water in m/s?
Answers
Answer:
The (vertical) speed of the driver as he strikes the water is approximately 18.22 m/s
Explanation:
From the parameters given in the question, we have;
The time after which the driver strikes the water after he drives off a platform, t = 1.857 s
Let 'v' represent the vertical speed of the driver
We can find the vertical speed of the vehicle as it strikes the water as follows;
v = u + g·t
Where;
v = The final vertical velocity of the driver
u = The initial vertical speed of the driver = 0 m/s
g = The acceleration due to gravity ≈ 9.81 m/s²
t = The time of motion = 1.857 seconds
Therefore, we have;
v = 0 + 9.81 m/s² × 1.857 s = 18.21717 m/s
Therefore;
The vertical speed of the driver as he strikes the water, v ≈ 18.22 m/s
If I hold an .63kg basketball 2 meters above the
ground, how much potential energy does it have?
If I drop the basketball from this height, how
much kinetic energy would it have right before it hits the floor?
Answers
Answer:
P.E.= 12.348 joules
K.E.=1.26 joules
Explanation:
A bird flies 100 meters per second in 50 seconds. How far will it travel?
Answers
Answer:the answer is 5000 meters
Explanation: because it travels 100m per seconds.
we have to multiply meters with seconds. m multiply s
Please help!!!!
A student reads that the Mid-Atlantic ridge is growing wider every year as the North American and Eurasian plates move apart. Why is the separation between the two plates of little concern?
a. the separation occurs slowly at the rate of only a few centimeters a year
b. the magnetic force acting between the two plates remains strong
c. the seafloor between the two plates continues to hold them together
d. a landmass bridges the gap that is created by the separation of the two plates
Answers
Answer:
I think its D.....
A friend insists that electric current is the same as electrical energy. Work with a partner to develop a rebuttal
against your friend's misconception.
Answers
Answer: The electrons flowing through the wire are referred to as a quantity of electricity, and the flow of electricity is referred to as “an electric current.”
Explanation: Hope it Helps have a blessed day
The heating element on an electric stove dissipates 4. 0 × 10^2 watts of power when connected to a 120-volt source. What is the electrical resistance, in ohms, of this heating element?
Answers
The heating element on an electric stove dissipates 4. 0 × \(10^{2}\) watts of power when connected to a 120-volt source. The electrical resistance of the heating element is approximately 36.03 ohms.
We can use Ohm's Law to calculate the electrical resistance of the heating element.
Ohm's Law states that the current (I) flowing through a conductor is equal to the voltage (V) across the conductor divided by the resistance (R) of the conductor:
I = V / R
Rearranging the formula to solve for resistance:
R = V / I
In this case, we are given that the power (P) dissipated by the heating element is 4.0 × \(10^{2}\) watts, and the voltage (V) across the heating element is 120 volts.
Power is related to voltage and current by the formula:
P = V * I
Rearranging the formula to solve for current:
I = P / V
Substituting the given values:
I = (4.0 × \(10^{2}\) watts) / (120 volts)
I = 3.33 amperes
Now we can calculate the resistance:
R = V / I = (120 volts) / (3.33 amperes)
R = 36.03 ohms
Therefore, the electrical resistance of the heating element is approximately 36.03 ohms.
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why the center of Newton rings is dark?
Answers
Answer:
Because at the point of contact the path difference is zero but one of the interfering ray is reflected so the effective path difference becomes λ/2 thus the condition of minimum intensity is created hence centre of ring pattern is
Explanation:
Off google not mine
Some factories have started using large tanks of bacteria to remove carbon dioxide from the atmosphere. As more factories start to do this, the amount of carbon dioxide being put into the atmosphere otherwise stay the same, what would happen to the total amount of energy in the Earth system and global average temperature? If there is a change, explain how that change would happen.
Answers
Answer:
I hope this helps ^^
Explanation:
If more factories start using large tanks of bacteria to remove carbon dioxide from the atmosphere, it would likely lead to a decrease in the overall amount of carbon dioxide in the atmosphere. Carbon dioxide is a greenhouse gas that contributes to the greenhouse effect, trapping heat in the Earth's atmosphere and causing global warming.
With a decrease in the amount of carbon dioxide, the total amount of energy in the Earth system would be affected. Carbon dioxide acts as a blanket, trapping heat from the sun and preventing it from escaping back into space. When the concentration of carbon dioxide decreases, less heat is trapped, resulting in a reduction of the total energy within the Earth system.
As for the global average temperature, the decrease in carbon dioxide levels would have a cooling effect on the planet. Since carbon dioxide is a major contributor to the greenhouse effect, its reduction would reduce the overall warming impact. This could lead to a decrease in the global average temperature, potentially slowing down or mitigating the rate of global warming.
However, it's important to note that the relationship between carbon dioxide levels, energy balance, and global temperature is complex and influenced by various factors. The impact of reducing carbon dioxide through bacteria tanks would depend on the scale of implementation, the effectiveness of the technology, and other factors that affect the Earth's climate system.
Set sampling period Ts=1/1000 (sec), and time axis 0 ~ 5 (sec).
Generate signals: x1(t)=10cos(ω1t); x2(t)=6sin(ω2t); x3(t)=cos(ω3t)+ 10sin(ω3t);
where ω1=50 Hz; ω2=95 Hz; ω3=120 Hz;
plot x1(t) within the maximum amplitude and time of 0~0.5 second,
Let y1(t)= x1(t)+ x2(t)+ x3(t), plot y1(t) within the maximum amplitude and time of 0~0.5 second.
ndicate the labels in x-axis and y-axis
Answers
The x-axis should be labeled with the time values in seconds from 0 to 0.5, and the y-axis should be labeled with the values of x1(t) ranging from -10 to 10, considering the maximum amplitude of the signal.
To plot the signal x1(t) within the time range of 0 to 0.5 seconds, we need to determine the corresponding values of x1(t) for that time range.
Given that x1(t) = 10cos(ω1t) with ω1 = 50 Hz, we can calculate the values of x1(t) using the formula.
For the time range of 0 to 0.5 seconds:
- At t = 0 seconds, x1(t) = 10cos(ω1 * 0) = 10cos(0) = 10 * 1 = 10.
- At t = 0.5 seconds, x1(t) = 10cos(ω1 * 0.5) = 10cos(25π) ≈ -7.071.
Plotting these values on the y-axis against the corresponding time values on the x-axis will give us the graph of x1(t) within the time range of 0 to 0.5 seconds.
The x-axis should be labeled with the time values in seconds from 0 to 0.5, and the y-axis should be labeled with the values of x1(t) ranging from -10 to 10, considering the maximum amplitude of the signal.
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how much space does 1pound of butter occupy if the density of butter is 0.94 grams/cm cubed
Answers
Answer:
483.6 centimeters³
Explanation:
Taking into account the definition of density, 1 pound of butter occupies 482.54 cm³.
First of all, you have to know that density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.
In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
\(density=\frac{mass}{volume}\)
In this case, you know:
density= 0.94 \(\frac{grams}{cm^{3} }\)mass= 1 pound= 453.592 gramsvolume= ?Replacing in the definition of density:
\(0.94\frac{grams}{cm^{3} } =\frac{453.592 grams}{volume}\)
Solving:
volume× 0.94 \(\frac{grams}{cm^{3} }\)= 453.592 grams
\(volume =\frac{453.592 grams}{0.94\frac{grams}{cm^{3} }}\)
volume= 482.54 cm³
Finally, 1 pound of butter occupies 482.54 cm³.
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Lebron bikes 800m (meters) to the left in 25s (seconds).
What was his average velocity in m/s?
Answers
Answer:
32m/sExplanation:
Velocity = Displacement/Time
Given
Displacement = 880m
Time = 25s
Required
Average velocity
Substituting the given values into the formula
Velocity = 800/25
Average velocity = 32m/s
Answer:
The Answer Is -32 m/s
Explanation:
Displacement trianglex = -800m
time t = 25 s
Average velocity v = ?
You can use the equation v = trianglex/t to solve for average velocity v.
v = trianglex/t
= -800m/25s
= -32 m/s
The__of force will determine the ___of acceleration. A.direction,direction B.direction,amount C. Amount,direction D.none of the above
Answers
Answer:
a) Direction, direction
(a) How much time does it take the car to overtake the truck? (b) How far was the car behind the truck initially? (c) What is the speed of each when they are abreast? (d) On a single graph, sketch the position of each vehicle as a function of time. Take x = 0 at the initial location of the truck. You are standing at rest at a bus stop. A bus moving at a constant speed of 5.00 m/s passes you. When the rear of the bus is 12.0 m past you, you realize that it is your bus, so you start to run toward it with a constant acceleration of 0.960 m/s^2. How far would you have to run before you catch up with the rear of the bus, and how fast must you be running then? Would an average college student be physically able to accomplish this? The driver of a car wishes to pass a truck that is traveling at a constant speed of 20.0 m/s (about 45 mi/h). Initially, the car is also traveling at 20.0 m/s, and its front bumper is 24.0 m behind the truck's rear bumper. The car accelerates at a constant 0.600 m/s^2, then pulls back into the truck's lane when the
Answers
(a) The time it takes for the car to overtake the truck can be calculated by dividing the distance between them by the relative velocity of the car with respect to the truck.
(b) The initial distance between the car and the truck can be determined from the given information, which states that the car's front bumper is 24.0 m behind the truck's rear bumper.
(c) When the car and the truck are abreast, their speeds will be equal.
(d) By sketching the position of each vehicle as a function of time on a graph, the relative positions and movements can be visualized.
(a) To find the time it takes for the car to overtake the truck, divide the initial distance between them by the relative velocity. The relative velocity can be obtained by subtracting the truck's velocity from the car's velocity.
(b) The initial distance between the car and the truck is given as 24.0 m, with the car positioned 24.0 m behind the truck's rear bumper.
(c) When the car and the truck are abreast, their speeds will be equal. This occurs at the moment when the car overtakes the truck.
(d) By sketching the position of each vehicle as a function of time on a graph, the movement of the car and the truck can be visualized. The x-axis represents time, and the y-axis represents position. The graph will show how the positions of the car and the truck change over time, with the car gradually catching up and overtaking the truck.
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Which statement describes a question that can be answered by a scientific
investigation?
A. It is a question that can be answered by gathering other scientists'
opinions.
B. It is a question that can be answered by gathering data during an
experiment.
C. It is a question about a phenomenon of which no measurements
can be taken.
D. It is a question about the sequence of experimental steps.
Answers
Answer:
Its b
Explanation:
I just did this question
The question that can be answered by scientific investigation is that can be answered by gathering data during an experiment. Thus option B is correct.
What is scientific investigation?Investigation on a natural phenomenon or process to solve a scientific question or to solve a social or environmental issue by well designed experiments based on reasonable observations is called scientific investigation.
A scientific investigation includes, variables, hypothesis , observations, research methodology. Scientific experiments have to well designed to address all the outcomes of the observations and must be feasible to prove whether the hypothesis is true or not.
Scientific investigations cannot be conducted based on only opinions from scientists or scientific record. The data have to be collected through experiments conducted by well designed research methodology.
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A satellite weighing 5,400 kg is launched into orbit 30,000 km above sea level. The mass of Earth is 6.0 × 1024 kg and its radius is 6,400 km. The gravitational constant is 6.673 × 10–11 N•m2/kg2. What is the gravitational force of Earth on the satellite in scientific notation with two decimals.
A satellite weighing 5,400 kg is launched into orbit 30,000 km above sea level. The mass of Earth is 6.0 × 1024 kg and its radius is 6,400 km. The gravitational constant is 6.673 × 10–11 N•m2/kg2 . What is the gravitational force of Earth on the satellite in scientific notation with two decimals.
–1.6 × 103 N
–1.63 × 103 N
–2.4 × 103 N
–5.27 × 104 N
Answers
The gravitational force of Earth on the satellite, given that the satellite is launched into orbit 30000 km above sea level is 1.63×10³ N
How do I determine the gravitational force?The gravitaional force between two objects can be obtained by using the following formula:
F = GM₁M₂ / r²
Where
F is the gravitaional force G is the gravitational constant M₁ and M₂ are the masses of the objects r is the distance apartThe following data were obtained from he question:
Mass of satellite (M₁) = 5400 = 5.4×10³ KgHeight (h) = 30000 km = 30000 × 1000 = 30000000 mMass of Earth (M₂) = 6.0×10²⁴ KgRadius of Earth (R) = 6400 km = 6400 × 1000 = 6400000 mDistance apart (r) = R + h = 6400000 + 30000000 = 36400000 mGravitational constant (G) = 6.673×10¯¹¹ Nm²/Kg²Gravitational force (F) =?The gravitaional force can be obtained as shown below:
F = GM₁M₂ / r²
F = (6.673×10¯¹¹ × 5.4×10³ × 6.0×10²⁴) / (36400000)²
F = 1.63×10³ N
Thus, the gravitational force is 1.63×10³ N
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If the diameter of Mara is 53.3 percent of Earths diameter (12,756km), determine its diameter in kilometers
Answers
The diameter of mars in kilometers is 6,799 km
Any straight line segment that traverses a circle's center and has endpoints that are on the circle is considered a segment of the circle's diameter. The circle's longest chord is another way to describe it. For a sphere's diameter, both definitions are appropriate.
As you are aware: 12,756 km is Earth's diameter; the percentage of Earth's diameter: 53.3% in decimal form is 0.533 (53.3% 100).
You must look for the following: the size of Mars
The equation you must apply is as follows: (Earth's radius) (decimal equivalent)
the size of Mars
Find the solution to the equation for Mars' diameter: (12,756 km) (0.533) (0.533)
6,799 km
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The complete question is-The diameter of the Earth is 12,756 kilometers. Mars has a diameter that is 53.3 percent that of Earth. Determine the diameter of Mars.
7. A car drives 750 m directly to the north, stops, and then backs up 300 m to the south.
a) What is the magnitude of the car's displacement?
Answers
Answer:
what grade is this?
Explanation:
Answer:
is it cumpulsary to know how fast the car was moving or it dosn't have to deal with velocity
Explanation:
:)
A hydraulic lift raises 1140 kg car through a height of 2.4 m. What is the potential energy
stored in the car?
Answers
Q3. A man walks with a speed of 8 m/sec in 40 sec. How much distance was covered?
Answers
Answer:
it is320 m.
Explanation:
by formula
d= m/s×t
d= 8× 40
d=320 m
Answer:
320
Explanation:
Explain diffraction at a single slit (light)
Answers
Answer:
At some point on say, the receiving screen, light emanating from the left side of the slit will be out of phase (a difference of 1/2 wavelengths) from light coming from the center of the slit.
Thus for every point that is left of the center of the slit, there will be a point on the right side of the slit that is out of phase,
There will be no light on the screen at that particular point and thus there will be a dark fringe there.
That is the basic explanation for the appearance of dark and bright fringes on the receiving screen.
when a substance changes states, it
either or energy
Answers
Explanation:
Energy is always involved in changes of state. Matter either loses or absorbs energy when it changes from one state to another. For example, when matter changes from a liquid to a solid, it loses energy. The opposite happens when matter changes from a solid to a liquid.
a car accelerate from rest to a speed of 3600m/s in 20 second what is the acceleration of the car?
Formula and solution pls
Answers
Answer:
Explanation:
The formula for acceleration is:
a = (v_f - v_i) / t
Where:
a = acceleration
v_f = final velocity
v_i = initial velocity (in this case, 0 m/s since the car started from rest)
t = time
Plugging in the given values, we get:
a = (3600 m/s - 0 m/s) / 20 s
a = 180 m/s^2
Therefore, the acceleration of the car is 180 m/s^2.
A car traveled 210 km in 1.5 hrs, what was the car's average speed?
Answers
Answer:
140km/h
Explanation:
Average speed= Distance/Time
= 210/1.5
= 140 I'm/h
A train is moving with the velocity 10 m/s. It attains an acceleration of 4 m/s² after 5 seconds. Find the distance covered by the train in that time.
Answers
The train covers a distance of 100 meters in the given time.
To find the distance covered by the train in the given time, we can use the equations of motion.
S = ut + (1/2)at²
The equation S = ut + (1/2)at² is derived from the basic equations of motion. The first term (ut) represents the distance covered in the initial velocity u multiplied by time t. The second term (1/2)at² represents the distance covered due to the acceleration a during time t.
The initial velocity (u) of the train is 10 m/s, and the acceleration (a) is 4 m/s². We are given that this acceleration is attained after 5 seconds, so the time (t) is also 5 seconds. We need to find the distance covered (S).
Substituting the given values:
S = (10 m/s)(5 s) + (1/2)(4 m/s²)(5 s)²
S = 50 m + (1/2)(4 m/s²)(25 s²)
S = 50 m + 50 m
S = 100 m
It's important to note that the given problem assumes a constant acceleration throughout the entire time interval.
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Which statement best describes the movement of atoms in a solid?
They are able to slide past each other.
They spread apart as far as possible.
They have no freedom to move.
They are free to move in all directions
Answers
Answer:
I know I am super super late but it is C my guy :))
Explanation:
Have a nice day!!
1. If a car travels 400m in 20 seconds how fast is it going?
2. If you move 50 meters in 10 seconds, what is your speed?
3. You arrive in my class 45 seconds after leaving math which is 90 meters away. How fast did you travel?
4. A plane travels 395,000 meters in 9000 seconds. What was its speed?
5. It takes Serina 0.25 hours to drive to school. Her route is 16 km long. What is Serina's average speed on her
drive to school?
Answers
Answer:
1) 20 m/s
2) 5 m/s
3) 2 m/s
4) 395,000m/9000s
5) 16 km/0.25h
Explanation:
i dunno