Bella kicks a soccer ball due north with 80.0 N of force. The acceleration is 195 m/s2. What is the mass of the soccer ball?
Answers
Force = mass × acceleration
80 = M × 195
M = 80/195
M ≈ 0,4 kilograms
Answer:
F=ma
a=F/m
so kickball having less mass will result to more acceleration
Explanation: i said so andddd when i put this it said it was right hehe
Related Questions
why are light intensity, carbon dioxide concentration and temperature liimiting factors
Answers
Answer:
As carbon dioxide concentrations increase, so too does the rate of photosynthesis until a certain point where the graph levels off. At lower carbon dioxide concentrations carbon dioxide is the limiting factor because an increase in carbon dioxide causes an increase in photosynthesis.
Explanation:
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If you start with 200 grams of an isotope, how many grams would be left after 40 years if the half-life of the isotope is 10 years?
Answers
Answer:
12.5 grams
Explanation:
From the question,
E' = E/2⁽ⁿ/a⁾....................... Equation 1
Where E' = mass left, E = Original mass, n = time, a = half-life.
Given: E = 200 grams, n = 40 years, a = 10 years.
Substitute these values into equation 1
E' = 200/2⁽40/10⁾
E' = 200/2⁴
E' = 200/16
E' = 12.5 grams.
Hence 12.5 grams of the isotope will be left.
An embryo develops inside the ________.
Answers
In which dimensions do we find the components of acceleration (tangent and normal vector)?
Let's say, I am skiing first uphill and then downhill, then up a ramp, land, and finally make a turn of 90 degrees to the right and stop with an acceleration of \(\vec {a}\), which is variable in all cases. In which directions would the normal and tangential components exist, and how will they change for all the cases, considering my acceleration in a 3D plane? Please explain with a graph if you could
Answers
The acceleration of an object can be split into two components: the tangential and normal components. The tangential component points along the direction of motion and is responsible for changing the speed of the object. The normal component is perpendicular to the direction of motion and is responsible for changing the direction of motion.
In your skiing example, the direction of your acceleration will change as you move uphill, downhill, up a ramp, and make a turn. Therefore, the tangential and normal components of your acceleration will also change in direction and magnitude.
As you ski uphill, your acceleration will be pointing in the opposite direction of your motion, resulting in a negative tangential acceleration. Since your motion is mostly vertical, your normal acceleration will be pointing upwards.
As you ski downhill, your acceleration will be in the same direction as your motion, resulting in a positive tangential acceleration. Your normal acceleration will still be pointing upwards.
When you go up a ramp, your acceleration will be a combination of tangential and normal components. The tangential component will be pointing upwards to match your velocity, and the normal component will be pointing perpendicular to the ramp.
When you land, your acceleration will be mostly normal, as you decelerate your downward motion and start to move horizontally.
Finally, when you make a turn, your tangential acceleration will be pointing in the direction of the turn, while your normal acceleration will be perpendicular to the turn.
Overall, the direction and magnitude of the tangential and normal components of your acceleration will depend on the direction and magnitude of your velocity and the curvature of your path.
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which of these methods is used to determine which component in a circuit isn't working properly? voltage test, ohm amp draw or hopscotching
Answers
All of these methods can be useful in identifying a faulty component in a circuit, and which one to use depends on the specific situation and the experience of the troubleshooter.
When a circuit component fails, it can cause the entire circuit to malfunction. Troubleshooting a circuit requires identifying the problematic component so that it can be replaced or repaired. There are different methods to determine which component is not working properly, including voltage testing, ohm amp draw, and hopscotching.
Voltage testing involves measuring the voltage at various points in the circuit to identify where the voltage drop occurs, which can indicate a faulty component.
Ohm amp draw involves measuring the resistance and current flow through each component to determine if any are outside of their expected range.
Hopscotching involves checking each component in the circuit one by one, starting from the power source, to see which one is causing the problem.
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A microphone is attached to a spring that is suspended from the ceiling, as the drawing indicates. Directly below on the floor is a stationary 375-Hz source of sound. The microphone vibrates up and down in simple harmonic motion with a period of 1.80 s. The difference between the maximum and minimum sound frequencies detected by the microphone is 2.75 Hz. Ignoring any reflections of sound in the room and using 343 m/s for the speed of sound, determine the amplitude (in m) of the simple harmonic motion.
Answers
Answer:
\(0.361\ \text{m}\)
Explanation:
\(f_s\) = Frequency of source = 375 Hz
\(\Delta f\) = Difference between the maximum and minimum sound frequencies = 2.75 Hz
v = Speed of sound in air = 343 m/s
T = Time period = 1.8 s
\(v_m\) = Maximum speed of the microphone
We have the relation
\(\Delta f=2f_s\dfrac{v_m}{v}\\\Rightarrow v_m=\dfrac{\Delta fv}{2f_s}\\\Rightarrow v_m=\dfrac{2.75\times 343}{2\times 375}\\\Rightarrow v_m=1.26\ \text{m/s}\)
Amplitude is given by
\(A=\dfrac{v_mT}{2\pi}\\\Rightarrow A=\dfrac{1.26\times 1.8}{2\pi}\\\Rightarrow A=0.361\ \text{m}\)
The amplitude of the simple harmonic motion is \(0.361\ \text{m}\).
If it actually hits the ground with a speed of 8. 50 m/s , what is the magnitude of the average force of air resistance exerted on it?
Answers
the magnitude of the average force of air resistance exerted on the object is approximately 1.05 N.
The magnitude of the average force of air resistance exerted on an object depends on various factors such as the shape, size, speed, and density of the object, as well as the density and viscosity of the air.
F = (1/2) * rho * Cd * A * v
we can estimate the density of air at sea level as 1.225 kg/m, and assume a drag coefficient of 0.5 for a spherical object.
F = (1/2) * rho * Cd * A * v
= (1/2) * 1.225 kg/m * 0.5 * pi * (0.1 m)* (8.50 m/s)
= 1.05 N (to two significant figures)
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A radioactive decay is illustrated. Which radioactive emission is a product of this decay?
A)Alpha
B)beta
C)gamma
D)positron
Answers
The radioactive decay is shown in the image attached to this answer
Answer:
Alpha
Explanation:
An alpha decay is said to have occurred when the mass number of the daughter nucleus decreases by four units and the atomic number of the daughter nucleus decreases by two units.
If we look at the equation from left to right, we will notice that the mass number of the daughter nucleus decreased by four units and the atomic of the daughter nucleus number by two units compared to that of the parent nucleus leading to the emission of an alpha particle.
What does it mean when wave
crests are close together?
A. the higher the amplitude
B. the lower the amplitude
C. the shorter the wavelength
D. the longer the wavelength
Answers
Answer: C
Explanation:
Waves with a higher frequency have crests that are closer together, so higher frequency waves have shorter wavelengths.
this is an area where two tectonic plates move towards each other with one going under the other plate?
Answers
Answer:Convergent boundaries are areas where plates move toward each other and collide. These are also known as compressional or destructive boundaries. Subduction zones occur where an oceanic plate meets a continental plate and is pushed underneath it. Subduction zones are marked by oceanic trenches.
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Explanation:
The attractive force between two (2) objects depends on their masses and the distance between them. This describes ______________ .
The Law of Conservation of Mass
The Law of Love
The Universal Law of Gravitation
The Law of the Conservation of Momentum
Answers
The statement 'the attractive force between two (2) objects depends on their masses and the distance between them' correctly describes The Universal Law of Gravitation (Option 3).
What is the Universal Law of Gravitation?The Universal Law of Gravitation is a scientific law well supported by empirical evidence which states that the force of attraction between different objects depends on the masses and distance.
The Universal Law of Gravitation is a scientific theory and it indicates that all types of particles are attracted by all objects present in the universe, and this attractive force is correlated to the length of separation between particles. This law was postulated by sir Isaac Newton, who was an English physicist and astronomer.
In conclusion, the statement 'the attractive force between two (2) objects depends on their masses and the distance between them' correctly describes The Universal Law of Gravitation (Option 3).
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Two objects X and Y move directly towards each other. The objects have the same mass.
Object X has a velocity of 5.0 m/s to the right. Object Y has a velocity of 3.0 m/s to the left.
Object X and object Y collide and stick together.
What is their velocity after colliding?
Answers
X and Y are two things that travel in the same direction. The mass of the things is the same. 5.0 m/s is the velocity of object x as it moves to the right. The velocity of object y to the left is 3.0 m/s. Objects x and y collide and adhere to one another. Following their collision, they both move at a speed of 1.0 m/s to the right.
Their velocity after colliding is 1.0 m / s to the right.
What is the velocity during the collision?
In a collision, the velocity change is always computed by subtracting the initial value from the final value. If an object is moving in one direction before a collision and rebounds or somehow changes direction, then its velocity after the collision has the opposite direction as before.Inelastic collisions occur when only the momentum is conserved but not the system's kinetic energy. Perfectly inelastic collisions happen when objects stick together and have a common velocity after collision. To solve for the final velocity in perfectly inelastic collisions, use v' = (m1v1 + m2v2)/m1 + m2.The magnitude of the relative velocity is the same before and after the collision.To learn more about velocity, refer to:
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Which type of energy is produced when the handle of a pencil sharpener turns?.
Answers
The type of energy produced when the handle of a pencil sharpener turns is mechanical energy.
The total of an object's kinetic and potential energy is its mechanical energy. You convert your own chemical energy—obtained through food—into the mechanical energy of a pencil sharpener's handle when you turn the handle.
The pencil is then sharpened using this mechanical energy by spinning the sharpening blades, which grinds away the graphite and wood while generating heat and friction. As the handle warms up from friction, some of the mechanical energy is transferred into thermal energy, and some of it is changed into the kinetic energy of the sharpened pencil as it proceeds through the sharpening process.
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A machine that fills cereal boxes is supposed to be calibrated so that the mean fill weight is 12 oz. Let μ denote the true mean fill weight. Assume that in a test of the hypotheses H0 : μ = 12 versus H1 : μ ≠ 12, the P-value is 0.4 a) Should H0 be rejected on the basis of this test? Explain. Check all that are true. No Yes P = 0.4 is not small. Both the null and the alternate hypotheses are plausible. The null hypothesis is plausible and the alternate hypothesis is false. P = 0.4 is small.
Answers
The P-value of 0.4, H0 should not be rejected, and the true statements are: P = 0.4 is not small, Both the null and the alternative hypotheses are plausible
Based on the provided information, the hypotheses are:H0: μ = 12
H1: μ ≠ 12
The P-value for this test is 0.4. A common significance level (α) is used to determine whether to reject the null the hypothesis is 0.05. If the P-value is less than or equal to α, the null hypothesis can be rejected.
In this case, the P-value (0.4) is greater than the significance level (0.05), so the null hypothesis should not be rejected. This means that the statement "P = 0.4 is not small" is true.
Since the null hypothesis cannot be rejected, it is plausible that the true mean fill weight is 12 oz. However, we cannot definitively conclude that the alternate hypothesis is false, only that there isn't enough evidence to support it. Therefore, the statement "Both the null and the alternative hypotheses are plausible" is also true.
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When blocking in football, why does a defending lineman often attempt to get his body under that of his opponent and push forward?
Answers
Answer:
because he is trying to break past you and sack your quarterback
Explanation:
In a electrically natural atom of any element there are equal numbers of
Answers
Answer: Atoms are electrically neutral because they have equal numbers of protons (positively charged) and electrons (negatively charged). If an atom gains or loses one or more electrons, it becomes an ion.
The recommendations state that "members of the general public should not be exposed on a continuous basis to___________ electric field strengths exceeding 5 kV/m," or to magnetic fields exceeding 0.1 mT (1 gauss or 1,000 mG).
Answers
Answer:
electric field must not exceed 5000 V / m ( 5 kV/m)
Explanation:
All electrical equipment produces electric and magnetic fields that must be within the range recommended by WHO, the upper limit for the sum of all fields is
The electric field must not exceed 5000 V / m
to get an idea of the intensity produced by one of the devices that has the largest electric field in the radio with 180 V / m
Answer
which of the following planets has the least substantial atmosphere? group of answer choicesA. marsB. venusC. mercuryD. earthE. neptune
Answers
A
Mercury has the least substantial atmosphere among the given planets.
Mercury, the closest planet to the Sun, has a very thin and tenuous atmosphere. Its atmosphere consists mainly of atoms and molecules that have been blasted off its surface by the solar wind, rather than being generated from internal processes like on Earth. The atmosphere on Mercury is extremely sparse, with a surface pressure about 1 trillion times lower than Earth's atmospheric pressure.
Due to its weak gravitational pull, Mercury is unable to retain a significant atmosphere compared to other planets in the list.Among the given options, Mercury has the least substantial atmosphere
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What is the mass of an object which has a momentum of 560 kg m/s and is traveling at 15 m/s?
Answers
Answer:
plane
Explanation:
Given a volume of 1000. сm of an ideal gas at 300. K, what volume would it occupy at a temperature of 600. K?
Answers
Answer:
2000 cm³
Explanation:
Assuming the pressure is constant:
V / T = V / T
1000 cm³ / 300 K = V / 600 K
V = 2000 cm³
How much tension must a rope withstand if it is used to accelerate a 6526 kg car vertically upwards at 8.9 m/s^2?
Answers
Answer:
The value is \(T = 122036.2 \ N\)
Explanation:
From the question we are told that
The mass of the car is \(m = 6526 \ kg\)
The acceleration is \(a= 8.9 \ m/s^2\)
Generally the net force applied on the rope is mathematically represented as
\(F_{net} = T - W\)
Here W is the weight of the car which is evaluated as
\(W = m * g\)
=> \(W = 6526 * 9.8\)
=> \(W = 63954.8 \ N\)
Generally the net force can also be mathematically represented as
\(F = m * a\)
So
\(m * a = T - 63954.8\)
=> \(6526 * 8.9 = T - 63954.8\)
=> \(T = 122036.2 \ N\)
the tilt of the moon's orbit shifts a little bit each year, which changes the dates eclipses occur each year. this shift of the orbital plane is called
Answers
The shift of the Moon's orbit is called precession and it occurs over a period of 18.6 years.
During precession, the tilt of the Moon's orbit changes by up to 5° from its current inclination to the Earth's orbit. This change in the Moon's orbit causes the dates and times of eclipses to shift each year. Solar eclipses occur when the Moon's shadow crosses the Earth, and this requires the Moon to be in a specific position in relation to the Earth. Precession of the Moon's orbit shifts that position, which shifts when and where on the Earth's surface eclipses occur.
Precession also affects the visibility of lunar eclipses. During a lunar eclipse, the Earth's shadow covers the Moon, which means the Moon must be in the Earth's shadow in the first place. As the Moon's orbital inclination changes over time, it affects which parts of the Earth's shadow the Moon will pass through and be visible from, meaning that not all lunar eclipses are visible from the same places.
Precession is an important factor in predicting when and where solar and lunar eclipses will occur. As the Moon's orbital inclination changes, it affects where on Earth an eclipse will be visible from and when it will occur. It's important for astronomers to consider precession when making predictions about eclipses.
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Explain in terms of energy the process
which takes place as a solid at its melting
point changes into a liquid at the same
temperature.
Answers
Explanation:
Endothermic reaction as heat from the environment is absorbed.
the transformation from solid to liquid is due to the latent heat of fusion/ enthalpy of fusion.
the heat energy absorbed from the environment is used to break the bonds of the solid structure therein converting it to a liquid. this is the reason why the temperature of the substance is constant at the state changes.
A car is moving along a straight test track. The position (in feet) of the car, \( s(t) \), at various times \( t \) is measured, with the results shown to the right. Use the table to answer parts (a)"
Answers
The car is at rest at \( t = 0 \) seconds, and it reaches a position of 80 feet at \( t = 4 \) seconds.
According to the given table, the position of the car at various times is measured. At \( t = 0 \) seconds, the car is at rest, as indicated by the position of 0 feet. This means that the car has not started moving yet.
As time progresses, we observe that the position of the car increases. For example, at \( t = 2 \) seconds, the car has moved to a position of 40 feet. This indicates that the car is covering a certain distance during each time interval.
At \( t = 4 \) seconds, we see that the car reaches a position of 80 feet. This means that in the time span of 4 seconds, the car has covered a distance of 80 feet.
The given information allows us to understand the relationship between time and position of the car. By analyzing the changes in position over time, we can determine the speed or velocity of the car at different instances.
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Lolz plz help me with this it’s due soon
Answers
Answer:
Explanation:
c slowing down since the distance is going down and the time is moving up.
We all play on the roller coaster in playgrounds, but Ahmad suggested playing this game alone. Take point B as a reference level. Suppose Ahmad starts from rest at point A and moves downward towards point B. What happens to his gravitational potential energy as he moves downward?
Answers
Answer:
b
Explanation:
100 POINTS
Plutonium-235
Given: energy released = about 200 MeV per individual reaction (mass = 239 amu)
Part A
List the balanced nuclear reaction.
I NEED THIS ASAP
Answers
Answer:
One gram atom of any substance contains one Avogadro number of atoms. Therefore, the number of atoms of U-235 present in 235 g of the substance = Avogadro Number = 6.02×10^23 atoms
The number of U-235 atoms present in 1 g of the substance = (6.02×10^23/235) atoms=2.56×10^21 atoms
Energy released in one atom fissioning = 200 MeV= 200 MeV × 1.6 × 10^-6 erg/MeV= 3.2 ×10^-4 erg/atom.
Energy released in the fission of all the atoms contained in 1g of Uranium-235 fissioning = (2.56×10^21 atom)×(3.2×10^-4 erg/atom)=8.19 ×10^17 erg
Now
1 kWh = 1000 Watt hour = 1000×( 10^7 erg/s)×3600s = 3.6 ×10^13 erg/kWh
So energy in kWh released in fission of 1 g of U-235 = (8.19× 10^17 erg)÷(3.6×10^13 erg/kWh) = 2.55 ×10⁴ kWh.
Added on 19th February, 2019.
The energy consumption of an average home in India in a month is between 300–500 kWh in the metropolitan cities. Let us take it at 400 kWh. So one gram of nuclear fuel (uranium) would be able to meet the energy requirements of a town of about 6000 for a month.
The energy in a fissile material is highly concentrated, compared to other types of fuels like wood, coal, diesel etc. So nuclear powered submarines can remain below water for very long periods of time, as they do not need to surface for getting fuel.
Explanation:
Energy in kWh released in fission of 1 g of U-235 is 2.55 ×10⁴ kWh.
How do find the energy released in fission?One gram atom of any substance contains one Avogadro number of atoms. Therefore, the number of atoms of U-235 present in 235 g of the substance = Avogadro Number = 6.02×10^23 atoms
The number of U-235 atoms present in 1 g of the substance = (6.02×10^23/235) atoms=2.56×10^21 atoms
Energy released in one atom fissioning = 200 MeV= 200 MeV × 1.6 × \(10^{-6}\) erg/MeV= 3.2 ×\(10^{-4}\) erg/atom.
The energy released in the fission of all the atoms contained in 1g of Uranium-235 fissioning = (2.56×\(10^{21}\) atom)×(3.2×\(10^{-4}\) erg/atom) = 8.19 ×\(10^{17}\) erg
1000 Watt hour = 1000×( \(10^{7}\) erg/s)×3600s = 3.6 ×10^13 erg/kWh
So the energy in kWh released in fission of 1 g of U-235 = 2.55 ×10⁴ kWh.
Fission takes place when a neutron slams into a bigger atom, forcing it to excite and break up into smaller atoms—additionally referred to as fission products. Extra neutrons are also launched that may initiate a sequence reaction. whilst each atom splits, a high-quality amount of electricity is released.
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I need help asap
What is a homopolar motor?
a. The first electric motor ever made.
b. A motor made by in the North Pole.
c. A motor used in homes in the winter.
Answers
Answer: The answer is A
Explanation:
calculate the magnitude of the gravitational field of the sun at the location of earth, in meters per square second.
Answers
The magnitude of the gravitational field of the Sun at the location of Earth is approximately 9.81 m/s2.
This value is derived from Newton's Law of Universal Gravitation, which states that the gravitational force (F) between two objects is equal to the product of the two objects' masses (m1 and m2) multiplied by the gravitational constant (G) divided by the square of the distance between the two objects (r2):
F = G * m1 * m2 / r2
The mass of the Sun is 1.989 × 1030 kg, and the average distance between Earth and the Sun is 1.496 × 1011 meters. Therefore, plugging those values into the equation gives us:
F = 6.67 × 10-11 * 1.989 × 1030 * 5.972 × 1024 / (1.496 × 1011)2
F = 9.81 m/s2
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What is an inclined plane that is wrapped in spiral
Answers
Answer:
A screw
Explanation:
The threads of a screw act like an inclined plane to increase the distance over which you exert the input force.