If a denser liquid replaces mercury in a barometer, the height of the liquid column would be less than the height of the mercury.
This is because the height of the liquid column in a barometer is determined by the balance between atmospheric pressure and the weight of the liquid column.
By replacing mercury with a denser liquid, the weight of the liquid column increases. However, the atmospheric pressure remains the same. As a result, to maintain the equilibrium, the height of the liquid column needs to decrease to compensate for the increased weight. This is because the pressure exerted by the denser liquid is greater per unit height compared to mercury. Therefore, a denser liquid in the barometer would result in a shorter liquid column height.
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What is the translational kinetic energy, in MeV, of a proton moving at 0.54 of the speed of light ?
We would apply the relativistic kinetic energy formula which is expressed as
KE = (y - 1)mc^2 = [1/√(1 - v^2/c^2 - 1]mc^2
where
m is the mass of proton
c is the speed of light
v is the speed of the proton
From the information given,
m = 1.67 x 10^-27 kg
c = 3 x 10^8 m/s
v = 0.54c
Thus,
KE = 1.67 x 10^-27 x (3 x 10^8)^2[1/√(1 - (0.54c/c)^2 - 1]
KE = 28.27 x 10^-12 J
We would convert from joules to mev
1 J = 6,241,509,343,260 MeV
28.27 x 10^-12 = 28.27 x 10^-12 x 6,241,509,343,260
KE = 176.48 Mev
the translational kinetic energy is 176.48 Mev
the material that formed the earth was created in a supernova explosion approximately 6 billion years ago. the two most common isotopes of uranium, 238u and 235u were created in roughly equal amounts. today, the earth contains more than 100 times as much 238u as 235u .
In conclusion, the Earth has a higher abundance of uranium-238 compared to uranium-235 due to the different rates at which these isotopes decay. This is a result of the initial creation of these isotopes in equal amounts during a supernova explosion billions of years ago.
The material that formed the Earth was created in a supernova explosion approximately 6 billion years ago. During this explosion, the two most common isotopes of uranium, 238U and 235U, were created in roughly equal amounts. However, today, the Earth contains more than 100 times as much 238U as 235U.
The reason for this difference lies in the different rates at which these isotopes decay. Uranium-238 decays at a slower rate compared to uranium-235. This means that over time, more 235U atoms have decayed, resulting in a lower abundance of this isotope on Earth. On the other hand, 238U atoms decay at a slower pace, which allows them to persist in higher quantities.
In conclusion, the Earth has a higher abundance of uranium-238 compared to uranium-235 due to the different rates at which these isotopes decay. This is a result of the initial creation of these isotopes in equal amounts during a supernova explosion billions of years ago.
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How do you find the current position of planets in a birth chart?
Answer:
Explanation:
Gather information on the exact place and time of your birth.
Choose a Western birth chart calculator for the simplest approach.
Try a Eastern sidereal calculator for a deeper dive into planetary cycles.
Enter your time and place of birth into the calculator.
Study what each planet means.
If the strength of the magnetic field at a is 27 units and the strength of the magnetic field at b is 3 units, what is the distance to b?.
It is 15 meters from point A to point B. The measure of magnetic field strength is the tesla.
The portion of a material's magnetic field that results from an external current and is not intrinsic to the material itself is known as the magnetic field strength, also known as magnetic intensity or magnetic field intensity. It is measured in amperes per meter and represented as the vector H.
H is defined by the formula H = B/ M, where B is the magnetic flux density, which measures the real magnetic field present in a material as a concentration of magnetic field lines, or flux, per unit cross-sectional area; is the magnetic permeability; and M is the magnetization.
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The complete question is
If the strength of the magnetic field at A is 27 units and the strength of the magnetic field at B is 3 units, what is the distance to B?
a) 10 m
b) 225 m
c) 15 m
Element Z has a half-life of 5 hours. After 1 day has passed, what percentage of Element Z would be remaining? After 1 day, % of Element Z would be remaining.
After 1 day has passed, approximately 6.25% of Element Z would be remaining.
The half-life of an element is the time it takes for half of the initial amount of the element to decay or transform into another element or isotopes. In this case, Element Z has a half-life of 5 hours.
To determine the percentage of Element Z remaining after 1 day (24 hours), we need to calculate the number of half-lives that have occurred.
Since the half-life of Element Z is 5 hours, there are 24 hours divided by 5 hours, which equals 4.8 half-lives.
Each half-life reduces the amount of Element Z by half. So, after 4.8 half-lives, the remaining amount of Element Z would be (1/2)^(4.8) = approximately 0.0625 or 6.25%.
Therefore, after 1 day has passed, approximately 6.25% of Element Z would be remaining.
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1. how can the school and community help you to stay healthy and be aware of your health status?
2. how can you help yourself to overcome your problems?
Answer:
1.school and community helps in growth and development of you social health as when u learn how to be compatible with the people around you, you will do better in life
2. by trying and solving
by not giving
by innovating
by being motivated
BY KNOWING THAT U CAN DO IT
A car travels 45 km north. It then turns around and travels 30 km south. What is the car's displacement?
The porosity of a core that was retrieved from a reservoir was measured in the lab and found to be 20%. Calculate the porosity under reservoir conditions if the overburden pressure is 4500 psi, the pore pressure is 1650 psi and the pore volume compressibility is 9x10€ pst-¹ A 160-acre and 100 ft thick reservoir has a porosity of 11%. The pore compressibility is 5.0 x 10- 6 (1/psi). If the pressure decreases 3,000 psi, what is the subsidence (ft)? Assume Cf=Cb
The porosity of a core retrieved from a reservoir = 20%. Overburden pressure = 4500 psi, Pore pressure = 1650 psi, Pore volume compressibility = 9 x 10^-6 psi^-1, Reservoir porosity = 11%, Pore compressibility = 5.0 x 10^-6 psi^-1, Pressure decrease = 3000 psi.
Porosity under reservoir conditions if the overburden pressure is 4500 psi, the pore pressure is 1650 psi and the pore volume compressibility is 9x10€ pst-¹ and Subsidence. The relation between porosity, overburden pressure, and pore pressure is given by:φ = (φo - φw)/(1 - φw), Where φo = porosity under overburden pressure and pore pressure.φw = porosity under reservoir condition.
Substituting the given values in the above relation, we get:0.2 = (φo - 0.11)/(1 - 0.11)φo - 0.11 = 0.18φo = 0.18 + 0.11φo = 0.29So, the porosity under reservoir condition is 29%.
The relation between subsidence and pressure decrease is given by:Δh = (Cf - Cb) × Δp × h0, Where, Cf = Pore compressibility, Cb = Bulk compressibility (assumed to be equal to pore compressibility), Δp = Pressure decrease, h0 = Thickness of the reservoir.
Substituting the given values in the above relation, we get:Δh = (5.0 x 10^-6) × (3000) × (100)Δh = 1.5 ft.
Therefore, the subsidence is 1.5 ft.
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A pitcher throws a softball
Answer:
Did you forget the answers
Explanation:
if so leave in comments and i will try to figure out
Answer:
what is the question and the answers??
how does the number of protons change as atomic number increases by one
electronegativity increases when atoms ___
A.have a small atomic radius
B.are located in the right on the periodic table
C.are located on the left on the periodic table
D.have a large atomic radius
your answer is.....
D. have a large atomic radius
although they also increase going from left to right so if D is incorrect, B might be your answer. it depends on context of the lesson.
The Sun has a temperature of 5780 K. What is the wavelength and frequency where its spectrum peaks? Which color does this correspond to? How does the energy flux of the Sun compare that of a red dwarf whose temperature is a mere 2,000 K, and is of the same size?
1) The wavelength at which the Sun's spectrum peaks is approximately 5.02 x 10^-7 m, and the frequency at which it peaks is approximately 5.99 x 10^14 H
2) The color corresponding to this wavelength is yellow-green
3) The energy flux of the Sun is much higher than that of a red dwarf of the same size, by a factor of approximately 1.9 x 10^4.
To determine the wavelength and frequency at which the Sun's spectrum peaks, we can use Wien's displacement law which states that the peak wavelength of blackbody radiation is inversely proportional to the temperature of the object. Mathematically,
λ_max = b/T
where λ_max is the peak wavelength, T is the temperature of the object, and b is Wien's displacement constant, which is equal to approximately 2.898 x 10^-3 m*K.
Substituting T = 5780 K and b = 2.898 x 10^-3 m*K, we get:
λ_max = (2.898 x 10^-3 m*K) / (5780 K) = 5.02 x 10^-7 m
Therefore, the wavelength at which the Sun's spectrum peaks is approximately 5.02 x 10^-7 m.
We can also use the relationship between wavelength and frequency of electromagnetic radiation:
c = λf
where c is the speed of light (3 x 10^8 m/s), λ is the wavelength, and f is the frequency.
Rearranging the equation to solve for f, we get:
f = c/λ = (3 x 10^8 m/s) / (5.02 x 10^-7 m) = 5.99 x 10^14 Hz
2) The color corresponding to this wavelength is yellow-green, which is in the middle of the visible spectrum.
3) The energy flux of a star is proportional to its surface temperature to the fourth power (Stefan-Boltzmann law), so the energy flux of the Sun can be calculated as:
E_Sun = σT^4A
where σ is the Stefan-Boltzmann constant (5.67 x 10^-8 W/m^2 K^4), T is the temperature of the Sun (5780 K), and A is the surface area of the Sun. Assuming the Sun has a radius of approximately 696,340 km, we get:
A_Sun = 4π(696,340 km)^2 = 6.09 x 10^18 m^2
Substituting these values, we get:
E_Sun = (5.67 x 10^-8 W/m^2 K^4) x (5780 K)^4 x (6.09 x 10^18 m^2) = 3.85 x 10^26 W
Now, let's compare this to the energy flux of a red dwarf with a temperature of 2000 K. Using the same equation, we get:
E_red dwarf = (5.67 x 10^-8 W/m^2 K^4) x (2000 K)^4 x (6.09 x 10^18 m^2) = 2.03 x 10^22 W
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Find the resultant of these two forces : 2.00 x 10^2 N due east and 4.00 x 10^2 N 30.0 degree north of west
If two vectors are represented both in magnitude and direction by the two adjacent sides of a triangle taken in an order, then their resultant is given by the third side taken in the reverse order.
Resultant vector :
R = sqrt of A^2 + B^2 + 2ABcosθ
given :
A = 200 units
B = 300 units
θ = 30 degrees
∴ R = sqrt of 200^2 + 300^2 + 2(200)(300)cos35
the answer is 477.805656
How is social media changing the world as we know it?
Answer:
Social media has helped many businesses grow and promote itself, and has helped people find a better way to connect and communicate with one another. On the other hand, it's also provided many people with problems involving mental health, emotional insecurities, and waste of time
Explanation:
what they said is correct
a 4.4-kg block attached to a spring of force constant 284 n/m undergoes simple harmonic motion of amplitude 0.21 m. what is the energy of the mass-spring system?
The energy of the mass-spring system is approximately 12.407 J.
The energy of a mass-spring system can be calculated using the formula for the total mechanical energy, which is the sum of the potential energy and the kinetic energy.
To find the potential energy, we can use the formula for the potential energy of a spring:
Potential energy = (1/2) x k x x²
where k is the force constant of the spring and x is the displacement from the equilibrium position.
Given that the force constant of the spring is 284 N/m and the amplitude of the motion is 0.21 m, we can calculate the potential energy as follows:
Potential energy = (1/2) x 284 N/m x (0.21 m)²
Simplifying this expression gives:
Potential energy = 0.5 x 284 N/m x 0.0441 m²
Potential energy = 6.12984 Nm
To find the kinetic energy, we can use the formula for kinetic energy:
Kinetic energy = (1/2) x m x v²
where m is the mass of the block and v is the velocity of the block.
Since the motion is simple harmonic, the maximum velocity occurs at the equilibrium position, where the block passes through the midpoint of its oscillation. At this point, the velocity is maximum and equal to the angular frequency (ω) times the amplitude (A). The angular frequency can be calculated using the formula:
Angular frequency (ω) = √(k/m)
Given that the mass of the block is 4.4 kg and the force constant of the spring is 284 N/m, we can calculate the angular frequency as follows:
Angular frequency (ω) = √(284 N/m / 4.4 kg)
Simplifying this expression gives:
Angular frequency (ω) = √(64.5455 N/kg)
Angular frequency (ω) = 8.0345 rad/s
Therefore, at the equilibrium position, the maximum velocity is:
v = ω x A
v = 8.0345 rad/s 0.21 m
v = 1.6872 m/s
Now we can calculate the kinetic energy:
Kinetic energy = (1/2) x 4.4 kg x (1.6872 m/s)²
Simplifying this expression gives:
Kinetic energy = 0.5 x 4.4 kg x 2.8439 m²/s²
Kinetic energy = 6.27716 J
The total mechanical energy of the mass-spring system is the sum of the potential energy and the kinetic energy:
Total mechanical energy = Potential energy + Kinetic energy
Total mechanical energy = 6.12984 J + 6.27716 J
Total mechanical energy = 12.407 J
Therefore, the energy of the mass-spring system is approximately 12.407 J.
In conclusion, the energy of the mass-spring system is approximately 12.407 J.
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At some point in an underground horizontal pipe, the speed of water is 2.5m/s and the gauge pressure is 2×104 Pa. What is the gauge pressure if the pipe is changed for another twice the area?
The gauge pressure of the pipe is 2.234 ×10⁴ Pa, if the pipe is changed for another twice the area.
To find the gauge pressure the values given are,
speed of water = 2.5 m/s
Gauge pressure = 2×10⁴ Pa
What is pressure?Definition:
Pressure can be defined as the total applied force per unit of area. The pressure depends both on externally applied force as well the area on which it is applied.
To find the gauge pressure first we have use continuity equation,
A ₁V₁ = A₂V₂
By the given condition: As the area is increased to twice the original area
A ₁V₁ = 2A₁V₂
A₁ gets cancelled on both the sides,
V₂ =V₁/2
=2.5 /2
V₂=1.25 m/s
Then, substituting the values in Bernoulli's equation,
Equation is given as,
P₁ + 1/2 ρV₁² = P₂ + 1/2 ρV₂²
Taking 1/2 ρ as common,
P₂ = 2×10⁴ + 1/2 ×1000×(2.5² -1.25²)
= 2×10⁴ + 2343.75
=22343.75 Pa
=2.234 ×10⁴ Pa
Thus, if the pipe is changed for another twice the area then the gauge pressure is 2.234 ×10⁴ Pa.
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of the three states of matter, which one has the most kinetic energy?
Of the three states of matter (solid, liquid, and gas), gas has the most kinetic energy. This is because the particles in a gas have the highest average speed compared to the particles in solids and liquids.
In a gas, the particles are in constant motion, colliding with each other and the walls of the container. This motion generates kinetic energy, which is proportional to the speed and mass of the particles. In contrast, solids have the lowest kinetic energy because their particles are tightly packed and have limited movement. The particles in a solid vibrate around a fixed position, and only experience small oscillations. Liquids have an intermediate amount of kinetic energy. The particles in a liquid are less tightly packed than in a solid, and can move more freely, resulting in more kinetic energy. However, liquids have more intermolecular forces between the particles compared to gases, which restricts their movement and reduces their average speed. Therefore, of the three states of matter, gases have the most kinetic energy, followed by liquids and then solids.
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a 100 g ball on a 60-cm-long string is swung in a vertical circle about a point 200 cm above the floor. the tension in the string when the ball is at the very bottom of the circle is 5.0 n. a very sharp knife is suddenly inserted, as shown in figure p8.56, to cut the string directly below the point of support. how far to the right of where the string was cut does the ball hit the floor?
The ball hits the ground 3.27 meters to the right of where the string was cut.
When the ball is at the bottom of the circle, the tension in the string is equal to the weight of the ball plus the centripetal force required to keep it moving in a circle:
T = mg + \(mv^2/r\)
where T is the tension in the string, m is the mass of the ball, g is the acceleration due to gravity, v is the speed of the ball, and r is the radius of the circle.
We can solve for the speed of the ball at the bottom of the circle:
T = mg + \(mv^2/r5.0 N = (0.100 kg)(9.81 m/s^2) + (0.100 kg)(v^2)/(0.60 m)\)
\(v^2 = (5.0 N - 0.981 N)/(0.100 kg/0.60 m) = 26.2 m^2/s^2\)
\(v = sqrt(26.2 m^2/s^2) = 5.12 m/s\)
The ball is moving horizontally with this speed when the string is cut, so we can use projectile motion equations to determine how far it travels before hitting the ground.
We can use the vertical motion equation:
y = yo + vyo(t) + 0.5ay(t)^2
where y is the vertical distance traveled, yo is the initial vertical position, vyo is the initial vertical velocity (which is zero in this case), t is the time, and ay is the vertical acceleration due to gravity (-9.81 m/s^2).
The ball starts at a height of 2.00 m above the ground, and the time it takes to hit the ground can be found using the equation:
\(y = yo + vyo(t) + 0.5ay(t)^2\)
\(0 = 2.00 m + 0 + 0.5(-9.81 m/s^2)(t)^2t = sqrt(2.00 m/(0.5(9.81 m/s^2))) = 0.638 s\)
The horizontal distance traveled can be found using the equation:
x = vxt
where x is the horizontal distance traveled, vx is the initial horizontal velocity (which is 5.12 m/s in this case), and t is the time.
x = (5.12 m/s)(0.638 s) = 3.27 m
Therefore, the ball hits the ground 3.27 meters to the right of where the string was cut.
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According to our theory of solar system formation, which law best explains why the central regions of the solar nebula got hotter as the nebula shrank in size?.
Answer:
According to our theory of solar system formation, which law best explains why the central regions of the solar nebula got hotter as the nebula shrank in size? As it shrank in size, gas particles lost gravitational potential energy. Since energy must be conserved, this energy became thermal energy.
Explanation:
A car is traveling in a race. The car went from the initial velocity of 35 m/s to the final velocity of 65 m/s in 5 seconds
What is the acceleration?
- 13 m/s
om/
6 m/s
13 m/s
Answer:
6m/s
Explanation:
a = (v-u)/t
acceleration, a
initial velocity, u
final velocity, v
time, t
substitute values and you'll get the answer
Answer:
6 m/s
Explanation:
Using a scale diagram, calculate the resultant force acting on a sailing boat when an easterly wind provides 2, point, 50, k, N,2.50kN of force, the tide provides 1, point, 20, k, N,1.20kN of force from the direction 30, point, 0, degrees,30.0 ∘ more northerly than the wind. Give your answer to 2 significant figures. Remember that 'an easterly wind' means a wind coming from the East
Answer:
F = 3.6 kN, direction is 9.6º to the North - East
Explanation:
The force is a vector, so one method to find the solution is to work with the components of the vector as scalars and then construct the resulting vector.
Let's use trigonometry to find the component of the forces, let's use a reference frame where the x-axis coincides with the East and the y-axis coincides with the North.
Wind
X axis
F₁ = 2.50 kN
Tide
cos 30 = F₂ₓ / F₂
sin 30 = F_{2y} / F₂
F₂ₓ = F₂ cos 30
F_{2y} = F₂ sin 30
F₂ₓ = 1.20cos 30 = 1.039 kN
F_{2y} = 1.20 sin 30 = 0.600 kN
the resultant force is
X axis
Fₓ = F₁ₓ + F₂ₓ
Fₓ = 2.50 +1.039
Fₓ = 3,539 kN
F_y = F_{2y}
F_y = 0.600
to find the vector we use the Pythagorean theorem
F = \(\sqrt{F_x^2 +F_y^2}\)
F = \(\sqrt{ 3.539^2 + 0.600^2 }\)
F = 3,589 kN
the address is
tan θ = F_y / Fₓ
θ = tan⁻¹ \(\frac{F_y}{F_x}\)
θ = tan⁻¹ \(\frac{0.6}{3.539}\)0.6 / 3.539
θ = 9.6º
the resultant force to two significant figures is
F = 3.6 kN
the direction is 9.6º to the North - East
are intramolecular forces stronger than intermolecular?
Answer:
syk
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why does the doppler method generally allow us to determine only minimum planetary masses?
The doppler method, also known as radial velocity method, involves measuring the slight wobbling motion of a star caused by the gravitational pull of its orbiting planets.
This method allows us to determine the minimum planetary mass by measuring the minimum amount of wobbling motion of the star. However, the maximum mass of the planet cannot be determined through this method because it is dependent on the inclination angle of the planet's orbit relative to our line of sight. Without this information, we can only determine the minimum planetary masses using the Doppler method.
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How do you calculate grams to atoms?
To calculate grams to atoms are mentioned below.
What is atom?
A substance's tiniest component that cannot be destroyed chemically. A proton (a positive particle) and a neutron (a neutral particle) make up the nucleus (center) of each atom (particles with no charge). The nucleus is filled with negative electrons. Chemical reactions cannot generate or destroy atoms since they are indivisible particles. The mass and chemical makeup of an element's atoms are the same. The masses and chemical characteristics of atoms differ amongst elements.
What is gram ?
The International System of Units (SI) defines the gramme as one thousandth of a kilogramme of mass. The gramme was the name given to it at first. This cap for a pen weights about one gramme.
Therefore, calculate grams to atoms are mentioned below.
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What is the density of the baseball?
g/cm3
Answer:
0.70 g/cm3
Explanation:
Step 1 : weight ball to get the mass,
step 2 : measure the ball to find the length,
step 3 : multiply the length three times to calculate the volume,
step 4 : divide the mass with the volume to get the density.
Answer: 0.73
Explanation:
A progressive wave equation is represented by y=Asin2π(0. 15t-0. 1x). Find the
period,
amplitude,
frequency,
wavelength,
velocity
Given that the progressive wave equation is represented by y=Asin2π(0.15t-0.1x). Let's find the period, amplitude, frequency, wavelength, and velocity.
The wave equation is represented by y=Asin2π(0.15t-0.1x). The standard wave equation can be written asy = Asin(kx-ωt + Φ)Where,k = wave numberω = angular frequencyΦ = phase angle for the given equation, k = 0.1 and ω = 0.15.Amplitude:
Amplitude = A = maximum displacement from the mean position.A = 1Frequency: Frequency is the number of complete oscillations made by a point on the wave in one second. It is denoted by f.f = ω/2πFrequency, f = 0.15/2π = 0.0238 HzPeriod: Period is the time taken by one complete oscillation.
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why does a blue star and red star able to have the same luminosity??
If a reddish and a bluish star have the same luminosity, then the reddish star must be larger than the bluish star. This is again due to the Stefan-Boltzmann law; since the cooler, red star must have more surface area than a hot blue star to produce the same luminosity.
34. Why is it that an object can accelerate while
traveling at constant speed, but not at con-
stant velocity?
Answer:
The direction in which this object travels might be changing.
Explanation:
Velocity is a vector quantity. In addition to the rate at which this object moves, velocity also measures the direction of the motion.
In contrast, speed is a scalar quantity. The speed of an object also measure the rate at which this object moves. However, unlike velocity, speed does not account for the direction of the motion.
Hence, even if speed is constant, velocity of this object might not be constant as long as the direction of the motion is changing.
For example, consider an object moving around a circle at a constant rate. The speed of this object will be constant since the rate of the motion is constant. However, the velocity of this object will not be constant since the object needs to keep changing its direction to stay on the track.
1. A runner drops her phone as she is running at a constant speed of 3 miles per hour from point A to point B in a park. Describe the motion of the phone as it is observed by someone sitting on a bench at the park.
Answer:
Let's define the point A as our zero in the x-axis.
As the phone drops, it keeps the horizontal velocity that it had before, so the horizontal velocity is:
Vx = 3 mi/h.
Now, the only force acting on the phone is the gravitational force that acts in the vertical axis, then we have:
Ay = -g
where g = 9.8 m/s^2
It is dropped, so we do not have a vertical initial velocity, then for the vertical velocity we should integrate over time:
Vy = -g*t
And for the position again, we integrate over time, but now we have an initial position H, that is the height at which the phone is dropped.
Py = -(1/2)*g*t^2 + H
And the horizontal position can be found by integrating over time the horizontal velocity.
Px = (3mi/h)*t
This will be the two equations that describe the motion of the phone, and we can not solve it further because we do not know the initial height of the phone.
But in general, we have a linear equation in the horizontal axis and a quadratic equation with a negative leading coefficient in the vertical axis.
Position(t) = ( (3mi/h)*t, -(1/2)*g*t^2 + H)
Answer:
yes he is running at 3 mph
Explanation:
because im the teacher
IS IT right to the left a b c d
Answer:
c ok
Explanation: right?
Answer:
16
Explanation: