A human-operated spaceship reaches the moon in 3 days. the moon is about 386,400 km from earth. mars, our closest planetary neighbor, is, at its closest, about 140 times farther away from us than the moon if mars stays in place. assuming a very simple model of the solar system, about how long would it take that same spaceship to reach mars?
Answers
That identical spaceship takes around a year to get to mars.
The Earth's axial wobble is stabilized by the Moon, the biggest and brightest object in our night sky, leading to a typically stable climate. As a result, Earth is a more hospitable planet. Moreover, it produces tides, which result in a rhythm that has guided mankind for a very long time. The following calculation must be performed to determine how long it will take the same spacecraft to reach Mars given that Mars is 140 times further away from Earth than the Moon and that a spacecraft can traverse the 386,400 kilometers between the Earth and the Moon in 3 days:
140 x 3 = 420 days
This spaceship will travel from Earth to Mars in just about one year and two months, assuming a year has 365 days.
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Related Questions
find the maximum kinetic energy of electrons ejected from a certain metal if the material's work function is 2.1 ev and the frequency of the incident radiation is 0.89 × 1015 hz.
Answers
The maximum kinetic energy of electrons ejected from the metal is 3.8 eV .
The maximum kinetic energy of electrons ejected from a certain metal can be calculated using the formula:
Max kinetic energy = energy of incident radiation - work function
Here, the work function of the material is given as 2.1 eV and the frequency of the incident radiation is 0.89 × 10^15 Hz. We need to convert the frequency into energy using the formula:
Energy of incident radiation = Planck's constant x frequency
So, the energy of incident radiation is:
Energy of incident radiation = 6.626 x 10^-34 J.s x 0.89 x 10^15 Hz = 5.90 eV
Now, we can calculate the maximum kinetic energy of electrons ejected from the metal:
Max kinetic energy = 5.90 eV - 2.1 eV = 3.8 eV
Therefore, the maximum kinetic energy of electrons ejected from the metal is 3.8 eV. This means that any electron that absorbs energy from the incident radiation with an energy greater than 3.8 eV will be ejected from the metal.
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What happens to the energy in a system of magnets when the magnetic force causes two magnets to move?.
Answers
When the two magnets are made to move, the energy of the system in the system tends to change potential energy into the kinetic energy
Potential energy is the energy stored in the body while is at rest which would turn into kinetic energy when the object will initiate motion. This conversion of potential energy to kinetic energy is understood by the Work-Energy theorem. The kinetic energy is formulated as,
K.E. = 1/2 mv²
where K.E = Kinetic energy
m = mass of an object
v = velocity of the object
The work-energy theorem is stated as the products of all the forces acting on the system are equal to the difference in kinetic energies.
∑W = ΔK.E
where W = Work done on the system
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When a gas is compressed, its volume _____
Answers
Answer:
decreases
Explanation:
Answer:
Decreases
Explanation:
Wikipedia
How does Kirchhoff's Junction Rule apply to series circuits?(1 point) Responses It states that the current can be calculated at any part of the circuit by using V = IR. It states that the current can be calculated at any part of the circuit by using , V, = , IR, . It states that the voltage is the same at all points in the circuit. It states that the voltage is the same at all points in the circuit. It states that the current is the same throughout the entire circuit. It states that the current is the same throughout the entire circuit. It states that the voltage drop across any component of the circuit is equal to V = IR.
Answers
A baseball with a mass of 0. 15 kilograms collides with a bat at a speed of 40 meters/second. The duration of the collision is 8. 0 x 103 seconds. The
ball moves off with a speed of 50 meters/second in the opposite direction. What is the value of the force?
Answers
The value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.
When an object collides with another object, they exchange energy. For example, a baseball and bat collision or a car collision. When two objects collide, the force of the collision has to be equal on both sides of the collision according to Newton's Third Law. So, to find the value of force, we will apply the equation:
F = ΔP / ΔT
where F is the force, ΔP is the change in momentum, and ΔT is the time of collision. The equation represents the impulse momentum theorem.
Now, let's apply the given values to the above equation.
Final momentum (p2) = mass × final velocity (v2)
p2 = 0.15 kg × (-50 m/s)
p2 = -7.5 kg.m/s
Initial momentum (p1) = mass × initial velocity (v1)
p1 = 0.15 kg × (40 m/s)
p1 = 6 kg.m/s
Change in momentum (ΔP) = p2 - p1
ΔP = -7.5 kg.m/s - 6 kg.m/s
ΔP = -13.5 kg.m/s
Time of collision (ΔT) = 8.0 × 10³ s
Now, putting the values of ΔP and ΔT in the equation of impulse momentum theorem, we get:
F = ΔP / ΔT
F = -13.5 kg.m/s ÷ 8.0 × 10³ s
F = -1.7 × 10⁻³ N
Thus, the value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.
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How many outer-orbital electrons are found in an atom of:a) Na?b) P?c) Br?d) I?e) Te?f) Sr?
Answers
Answer:
Na=1P=5Br=7I=7Te=6Sr=2The requried number of outer-orbital electrons in an atom of Na is 1, P is 5, Br is 7, I is 7, Te is 6, and Sr is 2.
What is orbital?An orbital is a region of space around the nucleus of an atom where there is a high probability of finding an electron. The electrons in an atom are arranged in specific energy levels or shells, and each shell contains one or more subshells, which in turn contain one or more orbitals.
Here,
To determine the number of outer-orbital electrons in an atom, we need to look at the position of the element in the periodic table. The number of outer-orbital electrons is equal to the group number of the element for groups 1, 2, and 13 to 18. For groups 3 to 12, we need to subtract the group number from 10.
a) Na is in group 1, so it has 1 outer-orbital electron.
b) P is in group 15, so it has 5 outer-orbital electrons.
c) Br is in group 17, so it has 7 outer-orbital electrons.
d) I is in group 17, so it has 7 outer-orbital electrons.
e) Te is in group 16, so it has 6 outer-orbital electrons.
f) Sr is in group 2, so it has 2 outer-orbital electrons.
Therefore, the number of outer-orbital electrons in an atom of Na is 1, P is 5, Br is 7, I is 7, Te is 6, and Sr is 2.
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State the name of electromagnetic wave other than visible light ?
Answers
Answer:
-Radio waves
-Microwaves
-Infrared light (IR)
-Visible light
-Ultraviolet (UV)
-X-ray
-Gamma rays
(this is in order from the longest wavelength to shortest wavelength)
In most cultures, the difference between the majority viewpoint and the minority viewpoint is that the majority group is made to feel __________ and the minority group is made to feel __________. A. Divergent. . . Normal B. Equal. . . Superior C. Superior. . . Equal D. Normal. . . Divergent Please select the best answer from the choices provided A B C D.
Answers
The difference between the majority viewpoint and the minority view is that the majority group is made to feel normal and the minority group is made to feel divergent.
What is the viewpoint?A vantage point or point of view from which something is viewed or assessed is known as the viewpoint The story is narrated from a variety of perspectives, including two major ones and several smaller ones.
Most studies comparing majority versus minority influence argue the author, places a premium on influence in the sense of prevailing. In this context.
There is evidence that majorities have greater public influence than minorities, and that minority impact when it happens, is mostly latent. In the current version,
Hence the difference between the majority viewpoint and the minority view is that the majority group is made to feel normal and the minority group is made to feel divergent.
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Answer: D
Explanation:
Simplified for you.
What is an example of a chemical change
Answers
Answer:
Hello, Rotting, burning, cooking, and rusting are all further types of chemical changes because they produce substances that are entirely new chemical compounds. For example, burned wood becomes ash, carbon dioxide, and water. When exposed to water, iron becomes a mixture of several hydrated iron oxides and hydroxides.
Explanation:
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1. Black Panther ran 567.6 km to the east in 23 hours then turned around and ran 221.8 km to the west in 1.2 hours. What was his average velocity during the trip in km h?p
Answers
Answer:
80.08 km/h
Explanation:
Given that Black Panther ran 567.6 km to the east in 23 hours
Velocity = distance covered/time
Substitute the distance covered and time into the formula
Velocity = 567.6/23
Velocity = 24.68 km/h
then turned around and ran 221.8 km to the west in 1.2 hours.
Velocity = 221.8/1.2
Velocity = 184.83 km/h
What was his average velocity during the trip in km/h ?
Average velocity = (V + U)/2
Since the two velocity are opposite to each other, the average velocity will be:
Average velocity = (-24.68 + 184.83)/2
Average velocity = 160.15/2
Average velocity = 80.08 km/h
Therefore, his average velocity during the trip is 80.08 km/h
a crane uses a block and tackle to lift a 2000 N flagstone to a height of 30 m. How much work is done on the flagstone
Answers
The block and tackle system reduces the force required to lift the flagstone, while increasing the distance through which the rope must be pulled. The amount of force reduction depends on the number of pulleys in the system. Assuming that the block and tackle has a mechanical advantage of 4 (meaning that the force required to lift the flagstone is 1/4 of the weight of the flagstone), the tension in the rope will be:
Tension = Force required / Mechanical advantage
Tension = 2000 N / 4
Tension = 500 N
The work done on the flagstone by the crane is then:
Work = Force x Distance
Work = 500 N x 30 m
Work = 15,000 J
Therefore, the crane does 15,000 joules of work on the flagstone.
what is the dimension of resistivity
Answers
Answer:
Are you looking for the formula? because if so:
M L^2 T^-3 I^-2
Explanation:
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You are standing a distance of 17.0 meters from the center of a merry-go-round. The merry-go-round takes 9.50 seconds to go completely around once and you have a mass of 55.0 kg a. What will be your speed as you move around the center of the merry-go-round? b. What will be your centripetal acceleration as you move around the center c. What will be the magnitude of the centripetal force necessary to keep your body moving in ride? d. How much frictional force will be applied to you by the surface of the merry-go-round? e. What is the minimum coefficient of friction between your shoes and the surface of the ride?
Answers
a. The speed as you move around the center of the merry-go-round is approximately 3.61 m/s.
b The centripetal acceleration as you move around the center is approximately 0.764 m/s².
c The magnitude of the centripetal force necessary to keep your body moving in the ride is approximately 42.02 N.
d The frictional force will be equal to 42.02 N in magnitude.
e. The minimum coefficient of friction between your shoes and the surface of the ride is approximately 0.078.
How to calculate the valuea. The speed of an object moving in a circle can be calculated using the formula:
v = (2πr) / T
v = (2π * 17.0) / 9.50
v ≈ 3.61 m/s
b. The centripetal acceleration of an object moving in a circle can be calculated using the formula:
a = v² / r
a = (3.61²) / 17.0
a ≈ 0.764 m/s²
c. The centripetal force required to keep an object moving in a circle can be calculated using the formula:
F = m * a
F = 55.0 * 0.764
F ≈ 42.02 N
d. The frictional force acting on an object moving in a circle is equal in magnitude but opposite in direction to the centripetal force. Therefore, the frictional force will be equal to 42.02 N in magnitude.
e. The minimum coefficient of friction can be calculated
F normal = 55.0 * 9.8
F normal ≈ 539 N
μ = 42.02 / 539
μ ≈ 0.078
Therefore, the minimum coefficient of friction between your shoes and the surface of the ride is approximately 0.078.
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how are the electric field lines oriented (relative to the surface of the conductor) close to the conductor? how does this relate to the previous question?
Answers
The electric field lines that are near a conductor are parallel to that conductor's surface. The "normal" direction is thought to be this one.
This relates to the preceding query since sound waves can cause an object to vibrate and emit its own sound waves when they strike a solid object, such as a conductor. Depending on the relative phase and amplitude of the waves, the interference with the original sound waves can be either constructive or destructive. Because it may have an impact on how waves interact with the conductor and produce interference patterns, the orientation of the electric field lines close to the conductor is crucial. In general, the conductor has a stronger impact on the sound waves the closer it is to the source of the sound, and the interference patterns might become more complicated as a result.
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applying newton's second law gives the equation ma = f
Answers
Newton's Second Law of Motion states that the net force acting on an object is directly proportional to its acceleration. The proportionality constant, which is the object's mass, gives the equation ma = f (force equals mass times acceleration). This means that if a force is applied to an object with a certain mass, it will accelerate proportionally to the magnitude of the force.
Applying Newton's Second Law of Motion allows us to determine the force required to move an object of a certain mass a certain distance. We can also use it to calculate the acceleration of an object given its mass and the force acting on it. The second law states that the acceleration of an object is proportional to the force applied to it and inversely proportional to its mass. If the mass of the object remains constant, the acceleration produced is directly proportional to the force applied.
The second law also tells us that if a net force is acting on an object, it will accelerate in the direction of that force. This law can be used to explain the motion of objects in both linear and rotational motion. For example, when a bat hits a ball, the force of the bat on the ball causes it to accelerate, and the ball moves in the direction of that force. In summary, applying Newton's Second Law of Motion is a powerful tool for understanding the motion of objects and how they respond to forces acting on them.
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Using Ohm's law, what is the current passing through a wire when the 10 V is placed across a wire with 50 Ohms? (3pts) If voltage is slowly increased, what will happen to current flow? What will the current be if that initial voltage (10 V) is used but now a longer the wire is 10x longer?
Answers
Ohm's Law is V = IR, where V is voltage, I is current, and R is resistance. To find the current passing through a wire when the 10 V is placed across a wire with 50 Ohms, we need to use the formula I = V/R.
So, I = 10 V / 50 Ω = 0.2 A. Therefore, the current passing through a wire when the 10 V is placed across a wire with 50 Ohms is 0.2 A.If voltage is slowly increased, the current flow will also increase, as per Ohm's law I = V/R. The current will increase proportionally as long as the resistance remains constant.
If the resistance changes with respect to the voltage, then the current flow will change differently. For example, if the voltage increases and the resistance also increases proportionally, then the current flow will remain the same.
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¿Por qué crees que es importante desarrollar actividad física habitualmente, así como practicar hábitos de higiene saludable?
Answers
La actividad física posee muchos beneficios para la salud. Algunos de estos beneficios son la reducción en el riesgo de padecer enfermedades, control del peso, fortalecimiento de huesos y músculos, etc.
La actividad física regular previene la aparición de enfermedades cardiovasculares al evitar la acumulación de colesterol en las arterias que transportan sangre a diferentes áreas del organismo.
La actividad física consume calorías, especialmente aquellas provenientes de los lípidos (grasas), con lo cual permite controlar el peso y reducir el riesgo de obesidad.
La actividad física también ayuda al fortalecimiento de los tejido oseo, con lo cual previniendo enfermedades relacionadas tales como la osteoporosis.
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Runner A is initially 5.8 km west of a flagpole and is running with a constant velocity of 8.6 km/h due east. Runner B is initially 4.9 km east of the flagpole and is running with a constant velocity of 7.1 km/h due west. How far are the runners from the flagpole when their paths cross? Answer in units of km.
Answers
Answer:
Runner A will be 0.05 km from the flagpole, and runner B will be 0.07 km from the flagpole
Explanation:
We can find when their paths will cross as follows:
\( X_{f} = X_{0} + v_{0}t + \frac{1}{2}at^{2} \)
Where:
\(X_{f}\) is the final position
\(X_{0}\) is the initial position
v₀ is the initial speed
t is the time
a is the acceleration = 0 (since they are running with a constant velocity)
When their paths cross we have:
\(X_{fA}+X_{fB}=5.8+4.9=10.7 km\)
\(V_{A}t+V_{B}t=10.7\)
\(8.6t+7.1t=10.7\)
\(t = 0.68 h\)
Now we can find the final distance of each runner.
\(X_{fA}=V_{A}*0.68\)
\(X_{fA}=8.6*0.68 km\)
\(X_{fA}=5.85 km\)
\(X_{fB}=V_{B}*0.68\)
\(X_{fB}=7.1*0.68\)
\(X_{fB}=4.83 km\)
Therefore, runner A will be 0.05 km from the flagpole, and runner B will be 0.07 km from the flagpole.
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define amplitude of sound
Answers
Determine the mechanical advantage of a car jack that uses an input force of 30 N and provides an output force of 600 N. pls answer quick
Answers
Answer:
Mechanical Advantage of car jack is 20
1 A Copper bar is 120m long at 0°c What is the increase in length when it is heated at 40°c The Linear expansion for Copper is 1.7x10^-5/℃
Answers
The increase in length of the copper with original length of 120 m is 8.16×10⁻² m.
What is increase in length?A change in length ΔL is produced when a force is applied to a wire or rod parallel to its length L0, either stretching it (a tension) or compressing it.
To calculate the increase in length of the copper, we use the formula below
Formula:
ΔL = αLΔT..................... Equation 1Where:
ΔL = Increase in length α = Linear expansion of copperΔT = Change in TemperatureL = Original LengthFrom the question,
Given:
α = 1.7×10⁻⁵/°CL = 120 mΔT = 40-0 = 40 °CSubstitute these values into equation 1
ΔL = 1.7×10⁻⁵×120×40ΔL = 8.16×10⁻² mLearn more about change in length here: https://brainly.com/question/27934934
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During the push-up, the hips should never hit the ground and should move 1 point
in time with the shoulders. *
True
False
Other:
Answers
Why does the periodic table work?
Answers
Answer:
The table lists the chemical elements in order of increasing atomic number, which is the number of protons in an atom of an element.
Explanation:
The periodic table is a graphical collection of element data. The table lists the chemical elements in order of increasing atomic number, which is the number of protons in an atom of an element. The rows (periods) and columns (groups) organize elements according to similar properties.
The atomic number, or the number of protons in an element's atom, is used in the table to organize the chemical elements.
How does the periodic table ?The Gaussian Model in subatomic particles, which allows the known elementary particles to be arranged according to their inherent properties, can be compared to the periodic table. The table is significant because it is set up to offer a wealth of knowledge on elements and their interactions in a single reference. Even elements that have yet to be found can have their properties predicted using the table.
What is periodic table and its importance?All known elements are grouped together in the periodic table of the elements into groupings with related properties. It becomes a crucial tool for chemists, nanotechnologists, as well as other scientists as a result. You can forecast how chemicals will react if we learn to use and comprehend the periodic table.
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A tourist stands at the top of the Grand Canyon, holding a rock, overlooking the valley below. Find the final velocity and displacement of the rock after 4.0 seconds give the three initial conditions listed below:
a. the rock is dropped vertically from rest
b. the rock is tossed vertically upward with 8.0m/s of speed
c. The rock is tossed vertically downward with 8.0 m/s speed
Answers
Answer:
a. -39.2 m/s; -78.4 m
b. -31.2 m/s; -46.4 m
c. -47.2 m/s; -110.4 m
Explanation:
Part (a)We are given/can infer these variables:
t = 4.0 sa = -9.8 m/s² v_0 = 0 m/sWe want to find the displacement and the final velocity of the rock.
Δx = ?v = ?We can use this equation to find the final velocity:
v = v_0 + atPlug in the known variables into this equation.
v = 0 + (-9.8)(4.0) v = -9.8 * 4.0 v = -39.2 m/sThe final velocity of the rock is -39.2 m/s.
Now we can use this equation to find the displacement of the rock:
Δx = v_0 t + 1/2at²Plug in the known variables into this equation.
Δx = 0 * 4.0 + 1/2(-9.8)(4.0)² Δx = 1/2(-9.8)(4.0)² Δx = -4.9 * 16 Δx = -78.4 mThe displacement of the rock is -78.4 m.
Part (b)We are given/can infer these variables:
v_0 = 8.0 m/sa = -9.8 m/s²t = 4.0 sWe can use this equation to find the final velocity:
v = v_0 + atPlug in the known variables into this equation.
v = 8.0 + (-9.8)(4.0) v = 8.0 + -39.2 v = -31.2 m/sThe final velocity of the rock is -31.2 m/s.
We can use this equation to find the displacement:
Δx = v_0 t + 1/2at²Plug in known variables:
Δx = 8.0(4.0) + 1/2(-9.8)(4.0)² Δx = 32 - 4.9(16)Δx = -46.4 mThe displacement of the rock is -46.4 m.
Part (c)We are given/can infer these variables:
v_0 = -8.0 m/sa = -9.8 m/s²t = 4.0 sWe can use this equation to find the final velocity:
v = v_0 + atPlug in the known variables into this equation.
v = -8.0 + (-9.8)(4.0) v = -8.0 - 39.2 v = -47.2 m/sThe final velocity of the rock is -47.2 m/s.
We can use this equation to find the displacement:
Δx = v_0 t + 1/2at²Plug in known variables:
Δx = -8.0(4.0) + 1/2(-9.8)(4.0)²Δx = -32 - 4.9(16)Δx = -110.4 mThe displacement of the rock is -110.4 m.
Alan will use a compound pulley to lift a crate from the floor of his garage to a storage shelf. The shelf is 3.5 meters above the
floor. Alan pulls 10.5 meters of rope to lift the crate. Which statement is correct? (1 point)
O Alan uses three times the force he would have used without the compound pulley.
O Alan uses the same amount of force with the compound pulley as he would without it.
O Alan will save work by using the compound pulley.
O Alan uses one-third the force he would have needed without the compound pulley.
Answers
The Answer is Option C, Alan will save work by using the compound pulley.
What is compound pulley?
A fixed (not moving) pulley and a movable pulley are combined to form a compound pulley system (attached to the load). When compared to using solely fixed pulleys, the mechanical benefit may be higher.
A rope or wire tied to a fixed point and looped around one wheel, then another, makes up a simple compound pulley. The two wheels move toward one another as the rope is pulled. On a sailing ship, block and tackle. On a ship, pulleys are utilised to tighten and adjust the sails.
The moveable and simple pulleys are combined to form a compound pulley. Another name for it is a combination pulley. It is set up to need a lot less work than a load that weighs half as much. It is widespread at construction sites where large steel and concrete objects are frequently lifted by cranes.This kind of pulley multiplies the force by two without changing the direction of the force being applied to it. The ideal mechanical advantage is two or more, since two or more rope segments pull up on the weight in a compound pulley.By pulling down on a rope that is looped around the wheel of a pulley with only one wheel, you may lift your weight and change the direction of the lifting force. A two-wheel pulley arrangement allows you to raise the same amount of weight with less effort.To know more about Compound Pulley Refer to:
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What is the centripetal force needed to keep a 3.0kg mass moving in a circle of radius 0.50 m at a speed of 8.0m/s?
Answers
Answer:
384N
Explanation:
Given parameters:
Mass = 3kg
radius = 0.5m
Speed = 8m/s
Unknown:
Centripetal force = ?
Solution:
The centripetal force is the inward force that keeps a body in motion along a circular path.
It is mathematically expressed as;
F = \(\frac{mv^{2} }{r}\)
m is the mass
v is the speed
r is the radius
Now insert the parameters and solve;
F = \(\frac{3 x 8^{2} }{0.5}\) = 384N
Explain how one physical property each of acid, base and sait is used by man
Answers
Answer:
Hope this helps :)
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There are planets in the universe without a parent star. most all stars have planets. most stars are binary. true false
Answers
True : yes there are planets in the universe without a parent star called
rogue planets.
False : most stars are not binary
What is rogue planets ?
planets which do not orbits the planetary system is known as roque planets. For example, pluto. Rogue planets can be smaller and bigger than jupiter too.
Free-floating planets or rogue planets without orbits around stars may also harbor life, some scientists believe. Due to the gravitational effects of giant planets within their system, these planets get kicked out of their system like any other planets formed around stars.
no most stars are not binary, binary which means two stars orbit around the common center and approximately only 40 binary stars have been found till not in our solar system.
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4 major functions of the skeletal system
Answers
The functions of the skeletal system are support, movement, production of cells and protection.
The bones, muscles, ligaments, and tendons make up a skeletal system in the human body. It serves as body's support system to enable correct movement and bodily function. The skeleton gives the entire body structural support, allowing us to sit, stand, and move freely. In addition, fragile organs the brain, heart, and lungs are safeguarded by the bones of the skull, ribs, and spinal column.
Additionally, the skeletal system makes blood cells and stores minerals. The production of these cells, and platelets all essential for immune system and blood clotting take place in the bone marrow, which is found inside numerous bones. In addition, our ability to move and engage in activities like running, jumping, and dancing is made possible by our bones working in tandem with our muscles and joints.
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The Weight of an object is more at pole and less at equator of the earth. Give reason
Answers
The Weight of an object is more at pole and less at equator of the earth because the distance of the pole is less than the distance of the equator from the centre of the earth.