What gravitational force does the earth exert on a person
standing on the surface of the earth? The mass of the earth is
5.97 x 1024 kg, the mass of the person is 62 kg and the radius
of the earth is 6.4 x 106 m.
Answers
The gravitational force exerted by the earth on a person standing on the earth's surface is 602.74 N.
What is the gravitational force of the earth on the person?The gravitational force exerted by the earth on a person standing on the earth's surface is given below as follows:
\(F = \frac{Gm^{1}m^{2}}{r^{2}}\)where
G = 6.67 * 10⁻¹¹
m¹ = 62 kg
m² = 5.97 * 10²⁷ kg
r = 6.4 * 10⁶ m
\(F = \frac{5.97*10^{24}*62*6.67*10^{-11}}{(6.4*10^{6}){2}} = 602.74\:N\)
Therefore, the gravitational force exerted by the earth on a person standing on the earth's surface is 602.74 N.
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Related Questions
You are riding a bicycle.if you apply a foward force of 125n, and you and the bicycle have a combined mass of 82kg, what will be the foward acceleration of the bicycle?(assume there is no friction)
Answers
The forward acceleration of the bicycle will be approximately 1.5244 m/s².
To calculate the forward acceleration of the bicycle, we can use Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. The formula is:
a = F_net / m,
where a is the acceleration, F_net is the net force, and m is the mass of the object.
Given:
Net force (F_net) = 125 N,
Combined mass of the bicycle and rider (m) = 82 kg.
Substituting these values into the formula, we get:
a = 125 N / 82 kg ≈ 1.5244 m/s² (rounded to four decimal places).
Therefore, the forward acceleration of the bicycle will be approximately 1.5244 m/s².
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How does adding a resistor to an electric circuit affect the current? (1 point)
O The resistor increases the current by increasing the amount of electric charge.
O The resistor decreases the current by decreasing the amount of electric charge.
O The resistor increases the current by transforming light energy or heat into electrical energy
O The resistor decreases the current by transforming electrical energy into different types of energy
Answers
Answer:
O The resistor decreases the current by transforming electrical energy into different types of energy
Explanation:
resistors convert elec energy to heat
Answer:
D
-CONNECTIONS
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much love! <33
When you are in a line of traffic that is crossing a railroad track that has no signals or gates:
Answers
A. You have the right-of-way and do not need to check for trains.
B. You may pass slower drivers while crossing the track.
C. You need to make sure there is space for your vehicle to get all the way across the tracks without stopping.
D. All of the above
Answers
When approaching a railroad track that has no signals or gates, it is important to exercise caution and follow certain rules to ensure safety. In this scenario, the correct answer is (C) "You need to make sure there is space for your vehicle to get all the way across the tracks without stopping."
This means that you should approach the railroad track at a reasonable speed and make sure that you have enough space to safely cross the tracks without stopping or getting stuck. You should also look both ways to check for any trains that may be approaching. Remember that trains are much larger and heavier than passenger vehicles and require much more time and distance to stop, so it is important to always yield to them and not try to beat them across the tracks.
Option (A) "You have the right-of-way and do not need to check for trains" is incorrect because trains always have the right-of-way over road traffic and you should always check for trains before crossing the tracks. Option (B) "You may pass slower drivers while crossing the track" is also incorrect because passing other vehicles while crossing the tracks can be dangerous and is not recommended.
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When you have two materials with the same index of refraction, it means that
Answers
Answer:
When you have two materials with the same index of refraction, it means that if they are touched by a ray of light it won't have a chance, and its form would prevail.
Explanation:
The reason behind this is that in the first place. When light passes through an object of certain refraction it is modified from its natural state, allowing it to change in color to the human eye or many other effects in other perceptive elements. However, when the same light passes through two objects with the same refraction due to their physical characteristics, it doesn't change because once it comes out of the first one it will suffer the same effect from the last one. For it to change the refraction would have to be higher or lower. Then it would be modified. The reason is because the dimensions are not modified. Because at some point the ray of light has to come out of the first one to enter the second one.
Question 11
Perhaps our single most significant source of radiation exposure is:
a. Radon
b. Cosmic radiation
c. Alpha particles
d. Gamma rays
Answers
Perhaps our single most significant source of radiation exposure is, (B). Cosmic radiation is correct option.
High-energy particles that come from the universe and have the ability to enter the atmosphere of the Earth are referred to as cosmic radiation. Protons, gamma rays, and other radiation types fall within this category. For people who frequently fly, such as airline crew members and frequent travelers, as well as astronauts who spend a lot of time in space, cosmic radiation is a substantial source of radiation exposure. People who work in environments with greater elevations, such as mountain climbers and pilots, may potentially be exposed to cosmic radiation.
However, based on variables like height, latitude, and solar activity, the exposure to cosmic radiation can differ. Cosmic radiation is regarded as one of the most major sources of radiation exposure, along with radon, alpha particles, and gamma rays.
Therefore, the correct option is (b).
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for the equation BaCI2 + Na2SO4 > BaSO4 + 2NaCI
A. reactants: 1 ;products: 1
B. reactants: 1 ;products: 2
C. reactants: 2 ;products: 1
D. reactants: 2 ;products: 2
Answers
plz answer any one of these (leave the question number)
Answers
I think.
what type of service does time safari, inc. provide?
Answers
Answer:
Explanation:
“The Sound of Thunder” is set in the year 2055. Time Safari, Inc. offers time-travel opportunities to hunt and kill exotic and now-extinct animals. In the hunt described in the story, the team of two guides and three hunters goes back to prehistoric days in order to kill the largest dinosaur of them all, a Tyrannosaurus rex. The business has already put safety precautions into place so that these trips can be made without unduly impacting the future. The animals that are killed are ones that have already been identified as doomed. For example, the T rex in question was going to be killed by a falling tree anyway. The safari leaders also built a path for visitors to step on so that no element of the past setting is tampered with. Even the slightest misstep could have implications for the future.
Match the term to its best description.
Covalent
Electronegativity
Anion
Metallic
?
Determines what type of bond will form
?
Electronegativity of two atoms are similar
?
A type of covalent bond
?
Negative ion
Answers
2. Covalent
3. Metallic
4. Anion
PLEASE HELP!!! ILL GIVE BRAINLYEST!!
The Law of Conservation of Matter describes how mass is not lost during a chemical reaction.
True
False
Answers
Answer:
i think its false
explanation
As of 2016, where and when was the largest earthquake in the world? Your answer Submit Clear form
Answers
The largest earthquake in the world in 2016 occurred on 17 December in Papua New Guinea and had a magnitude of 7.9 on the Richter scale.
What is an earthquake?An earthquake is defined as a natural disaster in which tectonic plates of the earth's crust suddenly move as a consequence of the release of pressure by contact, which may be associated with dramatic disasters. Earthquake power is measured as units on the Richter scale.
Therefore, with this data, we can see that the largest earthquake in 2016 occurred in Papua New Guinea (Oceania continent) and it had a magnitude of 7.9.
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Consider mechanical energy to find the coefficient of friction between the sledge and the ground
Answers
Answer:
0.08
Explanation:
We can represent the situation with the following figure
Now, by the conservation of energy, we can write the following equation
\(\begin{gathered} K_i+U_i-Wnc=K_f \\ \frac{1}{2}mv_i^2+mgh-F_fd=\frac{1}{2}mv_f^2 \end{gathered}\)Where m is the mass, vi is the initial velocity, g is the gravity, h is the height, Ff is the force of friction, d is the distance traveled by the sledge, and vf is the final velocity.
Using the free body diagram, we get that the force of friction is equal to
\(\begin{gathered} F_n=mg\sin60 \\ \text{ Then} \\ F_f=\mu F_n \\ F_f=\mu mg\sin60 \end{gathered}\)Now, we can replace the expression for Ff in the equation above and solve for the coefficient of friction μ
\(\begin{gathered} \frac{1}{2}mv_i^2+mgh-(\mu mg\sin60)d=\frac{1}{2}mv_f^2 \\ \\ \frac{1}{2}v_i^2+gh-\mu gd\sin60=\frac{1}{2}v_f^2 \\ \\ \mu gd\sin60=\frac{1}{2}v_i^2+gh-\frac{1}{2}v_f^2 \\ \\ \mu=\frac{1}{gd\sin60}(\frac{1}{2}v_i^2+gh-\frac{1}{2}v_f^2) \\ \end{gathered}\)Replacing g = 9.8 m/s², d = 16 m, vi = 3 m/s, h = 8 m, and vf = 12 m/s, we get
\(\begin{gathered} \mu=\frac{1}{(9.8)(16)\sin60}(\frac{1}{2}(3)^2+(9.8)(8)-\frac{1}{2}(12)^2) \\ \\ \mu=0.08 \end{gathered}\)Therefore, the coefficient of friction is 0.08
A projectile is launched at an angle of 60 degrees to the horizontal at an initial speed of 10 meters per second. What is the magnitude of the vertical component of its initial velocity?
Answers
Answer:
5 sq. root 3
Explanation:
theta= 60°
=> u sin theta = 10 × sin 60
= 10× sq. root 3/2
= 5 sq. root 3
we have that from the Question"A projectile is launched at an angle of 60 degrees to the horizontal at an initial speed of 10 meters per second" it can be said that
the magnitude of the vertical component of its initial velocity is
Fy=8.660NFrom the Question we are told
A projectile is launched at an angle of 60 degrees to the horizontal at an initial speed of 10 meters per second. What is the magnitude of the vertical component of its initial velocity?
Generally the equation for vertical component is mathematically given as
The vertical component will be the resolution of the vertical axis
Therefore
Fy=10sin60
Fy=8.660N
Therefore
the magnitude of the vertical component of its initial velocity is
Fy=8.660NFor more information on this visit
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You turn on a car's radio. What energy transformation is taking place?
A. Chemical to kinetic
B. Thermal to kinetic
C. Electrical to sound
D. Nuclear to sound
SUBMIT
Answers
Answer:
I think C like my friend upove
Explanation:
Which type of eclipse makes the Sun appear in the form of a ring?
A.
total solar eclipse
B.
partial solar eclipse
C.
annular solar eclipse
D.
partial lunar eclipse
E.
total lunar eclipse
Answers
Answer: D. Annular Solar Eclipse
Explanation:
An annular solar eclipse happens when the Moon passes between the Sun and Earth, but when it is at or near its farthest point from Earth. Because the Moon is farther away from Earth, it appears smaller than the Sun and does not completely cover the Sun.
Which term refers to a variable that a scientist adjusts during an experiment?
A. Dependent variable
B. Empirical variable
C. Manipulated variable
D. Responding variable
Answers
Answer:
it’s c
Explanation:
Particles q1 = -66.3 UC, q2 = +108 uC, and 93 = -43.2 uC are in a line. Particles q1 and q2 are separated by 0.550 m and particles q2 and q3 are separated by 0.550 m. What is the net force on particle q2?
Answers
The sum total of all forces which are acting on an object is known as the net force. A mass can accelerate due to the net force.
What is net force?The net force can be defined as the sum total of all the forces which are acting on an object. Net force can accelerate a mass. Some other force also act on an object either at rest or motion.
Here, r₁₂ = 0.550m r₂₃ = 0.550m. Then the distance from the first charge to the third one will be:
r₁₃ = r₁₂ + r₂₃ = 0.550 + 0.550 = 1.1m
According to the Coulomb's law, the net force on particle q₂ will be equal to the sum of the forces on particle q₂ from the particle q₁ and q₃.
F₃+ = F₁₃ +F₂₃ = q₁q₂/r²₁₃ + k q₃q₂/r²₂₃
Where, k = 9 × 10⁹ N m²/C²
Substituting numerical values, we obtain:
F₃ = 9 × 10⁹ (-66.3 × 10⁻⁶)(-43.2 × 9 × 10⁻⁶)/ 1.45² + 9 × 10⁹ × 108 × 10⁻⁶ (-43.2 × 10⁻⁶) / 0.550²
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The most stable nuclei all have around 60 nucleons. Why?A. Their ration of protons to neutrons is much smaller than that of the large nuclei, like, for example Uranium.B. They have a diameter about equal to the range of the nuclear force.C. They have just the right amount of negatively charged electrons to cancel the repulsion of the positively charged protons.D. They are made of Helium nuclei.
Answers
The most stable nuclei all have around 60 nucleons because B. They have a diameter about equal to the range of the nuclear force. In larger nuclei, like Uranium, the distance between some protons and neutrons may exceed the effective range of the nuclear force, making the nucleus less stable.
The most stable nuclei have around 60 nucleons because their diameter is approximately equal to the range of the nuclear force. The nuclear force is a strong, attractive force that acts between protons and neutrons in the nucleus. This force is short-ranged, meaning it is effective only over a relatively small distance.
In a nucleus with around 60 nucleons, the protons and neutrons are close enough together for the nuclear force to effectively hold the nucleus together. This results in a stable nucleus, as the attractive nuclear force balances the repulsive force experienced between protons due to their positive charge.
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the magnetometer will measure the total magnetic field. which of the components should be zero when the dipole is oriented along the y-axis, based on what you learned in the previous lab about the direction of magnetic field lines due to a dipole magnet?
Answers
The component of the magnetic field along the y-axis should be zero when the dipole is oriented along the y-axis.
This is because the magnetic field lines of a dipole magnet are perpendicular to the axis of the magnet. When the dipole is oriented along the y-axis, the axis of the dipole is also along the y-axis. Therefore, the magnetic field lines of the dipole are oriented in the x-z plane and are perpendicular to the y-axis. As a result, the component of the magnetic field along the y-axis is zero.
In contrast, when the dipole is oriented along the x-axis, the axis of the dipole is parallel to the x-axis, and the magnetic field lines of the dipole are perpendicular to the x-axis. Therefore, the component of the magnetic field along the x-axis is zero. Similarly, when the dipole is oriented along the z-axis, the axis of the dipole is parallel to the z-axis, and the magnetic field lines of the dipole are perpendicular to the z-axis. Therefore, the component of the magnetic field along the z-axis is zero.
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the index of refraction for red light in a certain liquid is 1.308; the index of refraction for violet light in the same liquid is 1.354.
Answers
The index of refraction for a particular substance refers to the amount by which light slows down as it passes through the substance. In this case, the index of refraction for red light in a certain liquid is 1.308, while the index of refraction for violet light in the same liquid is 1.354.
This difference in index of refraction is due to the fact that different colors of light have different wavelengths and frequencies, which affects how they interact with matter. The higher index of refraction for violet light means that it slows down more than red light when passing through the liquid, and thus bends more sharply. This phenomenon is known as dispersion, and is responsible for the separation of colors in a prism or rainbow.
Understanding the index of refraction is important in fields such as optics, where it plays a critical role in the design of lenses and other optical devices.
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An elevator travels at an average velocity of +5 m/s for 10 seconds and then -8 m/s for 5 seconds. Determine the elevator's displacement.
Answers
Displacement at 10s
\(\\ \bull\tt\dashrightarrow Velocity\times Time\)
\(\\ \bull\tt\dashrightarrow 5(10)=50m\)
Displacement at next 5s
\(\\ \bull\tt\dashrightarrow -8(5)=-40m\)
Now
Total displacement=50-40=10m
A car is traveling on a highway. the distance (in miles) from its destination and the time (in hours) is given by the equation d = 420 minus 65 t. what is the slope of the line represented by the equation? what is the practical meaning of the slope? a. m = 420; the total distance is 420 miles. b. m = 65; the car is traveling 65 miles per hour. c. m = negative 65; the car is traveling 65 miles per hour. d. m = negative 420; the total distance is 355 miles.
Answers
Imagine that you wanted to test the effects of driving at different speeds on the gas mileage of your car. To find out, you drove a distance of 100 miles at many different rates of speed. During your first trip, you drove at exactly 55 miles per hour and calculated that your gas mileage was 20 miles per gallon. During your next trips, you either decreased or increased your rate of speed. Also, what can you conclude from this experiment? How might your car get better gas?
Answers
The conclusion that you might arrive at is that the speed of the car affects the gas mileage.
What could you conclude from the experiment?We know that an experiment is the only way that we can be able to establish cause and effect relationship. We know that the speed would affect the consumption of the gas. By varying the speed of the car, we can be able to obtain the effect that it has on the mileage.
Thus, the conclusion that you might arrive at is that the speed of the car affects the gas mileage.
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as shown in the figure, a 10-kg block on a perfectly smooth horizontal table is connected by a horizontal string to a 63-kg block that is hanging over the edge of the table. what is the magnitude of the acceleration of the 10-kg block when the other block is gently released?
Answers
Newton's second law allows to find the acceleration of the two-body system, where a mass is hanging is:
The acceleration of the system is: a = 8.46 m / s²
Newton's second law states that the net force on a body is equal to the product of the mass and the acceleration.
∑ F = m a
Where the bold letters indicate vectors, F is the force, m the mass and the acceleration of the body.
A free body diagram is that diagram of the system where the forces are shown without the details of the bodies. In the attachment we have a free-body diagram of the system.
Let's write Newton's second law for each axis.
x- axis
T = m₁ a
y-axis
body in the horizontal part
N-W₁ = 0
N = W₁
Body hanging.
W₂ - T = m₂ a
Wwhere the positive direction is down, let's write our system of equations.
T = m₁ a
W₂-T = m₂ a
Let's Resolve.
m₂ g = (m₁ + m₂) a
a = \(\frac{m_2}{m_1+m_2} \ g\)
Let's calculate.
a =\(\frac{63}{10+63} \ 9.8\)
a = 8.46 m / s²
In conclusion using Newton's second law we can find the acceleration of the two-body system, where a mass is hanging is:
The acceleration of the system is: a = 8.46 m / s²
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A micrometer is used to measure the diameter of a length of copper wire. The zero error and scale reading are as shown.
A - what is the zero error of the micrometer?
B - what is the correct diameter wire?
Answers
A micrometer is used to measure the diameter of a length of copper wire. The zero error and scale reading are as shown.The correct answer should be the micrometer.
What is micrometer?The micrometer is an instrument that is capable of measuring the component of an object to very high precision. It is used to obtain accurate measurements in engineering.
In the case of the copper wire, the diameter of 0.3 mm was an approximation and a more accurate measure of the diameter would be obtained by using the micrometer.A micrometer is used to measure the diameter of a length of copper wire. The zero error and scale reading are as shown.The correct answer should be the micrometer.
Therefore, A micrometer is used to measure the diameter of a length of copper wire. The zero error and scale reading are as shown.The correct answer should be the micrometer.
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the coefficient of friction acting on a 945kg car is 0.850.The car is making a 180degree turn around a curve with a radius of 35.0m . Determine the maximum speed with which the car can make the turn
Answers
The maximum speed with which the 945 kg car can make the 180 degree turn around a 35.0 m radius curve is 17.25 m/s, or about 61.7 km/h.
What is speed?The maximum speed with which a car can make a turn can be determined by considering the force of friction acting on the car as it moves around the curve. In this case, the maximum speed can be found by equating the force of friction to the centrifugal force acting on the car.
The force of friction is given by the equation:
f (friction) = friction coefficient * normal force
The normal force is equal to the weight of the car, which can be calculated as:
f (normal) = m * g
where m is the mass of the car (945 kg) and g is the acceleration due to gravity \((9.8 m/s^2).\)
The centrifugal force acting on the car can be calculated using the equation:
\(f (centrifugal) = m * v^2 / r\)
where v is the speed of the car, and r is the radius of the curve (35.0 m).
By equating the force of friction to the centrifugal force, we can solve for the maximum speed of the car:
\(friction coefficient * m * g = m * v^2 / r\\v^2 = friction coefficient * g * r\\v = sqrt(friction coefficient * g * r)\)
Plugging in the values, we get:
\(v = sqrt(0.850 * 9.8 * 35.0)\\v = sqrt(298.3)\\v = 17.25 m/s\)
So, the maximum speed with which the 945 kg car can make the 180 degree turn around a 35.0 m radius curve is 17.25 m/s, or about 61.7 km/h.
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A double-convex thin lens has radii of curvature of magnitude 46 cm, and it is made of glass of index of refraction 1.60. what is the focal length of this lens?
Answers
TheThe focal length of the double convex lens is 0.0130cm.
What is lens maker's formula?It is the relation between the focal length of a lens to the refractive index of its material and the radii of curvature of its two surfaces. It is used by lens manufactures to make the lenses of particularly power from the glass of a given refractive index.
1/f=(μ-1)1/R1-1/R2 where , f is focal length ,μ is refractive index and r is radius of curvature
Where we given the values of R1→46cm ,
μ→1.60
Putting the values in equation and solving it we get ,
focal length→ 0.0130 cm
So the focal length is proved .
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You throw a ball upward with an initial speed of 3.0 m/s from an initial height of 1.5 m. After you throw the ball, its acceleration is 9.81 m/s2 downward.
Taking upward to be the positive direction, write the position-time equation for the ball's motion.
Answers
The position-time equation of the ball that is thrown upward with an initial speed of 3.0 m/s from an initial height of 1.5 m and afterward, it begins moving downward with an acceleration of9.81 m/s² is:
h = -9.8t² + vt + sWhat is a position-time equation?A position-time equation is an equation that gives the displacement of a moving object directly proportional to both the velocity and time of the object as it moves.
The position-time equation of the ball that is thrown upward with an initial speed of 3.0 m/s from an initial height of 1.5 m and afterward, it begins moving downward with an acceleration of9.81 m/s² is given below:
Using the vertical motion model;
h = -9.8t² + vt + s
where;
h is the maximum height of the ball
v is the initial velocity in meters/second, and
s is the height in meters.
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Answer:
1.5t+3t-4.9t^2
Explanation:
a(acceleration)=-9.81m/s^2
u(Initial Speed)=3m/s
y0(Initial Height)=1.5m
y=y0+ut+0.50(-9.8)t^2
After plugging everything in we get:
y=1.5+3t-0.50(9.8)t^2
After that, you multiply, -0.50 by 9.8 and get:
y=1.5+3t-4.9t^2 as your final answer
when a star exhausts its core fusion fuel so that the core begins to contract, which of the following can stop the contraction?
Answers
The correct answer is degeneration pressure.
The final cycle of a main-sequence star depends greatly on its mass and that produces energy when the hydrogen ran out.
For this case, let's take our sun for example. In billion of years, after the hydrogen is depleted, gravity will take over and start compressing the star, increasing the temperature to levels where the core can now fuse helium into carbon, this process will heat the star again, and the outer layers of hydrogen that remained during the main sequence, will be hot enough to reignite the fusion due to the energy.
The sun will produce several times more energy than when it was in the main-sequence, and it will continue to expand, it will shallow mercury, Venus, the earth itself and perhaps mars until it finally burns the remaining hydrogen. When there is no more fuel to power up the star, it will start to collapse itself, and shrink until it becomes a white dwarf, the last phase of the star.
Therefore, the degeneration pressure is used to suppress the energy of the star and when a star exhausts its core fusion fuel so that the core begins to contract, it helps to stop the contraction.
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I’ll mark u as brainlist if you get this right!
