The current flowing through the heating coil when the heater is plugged in will be 0.08A.The resistance of the heater is 12.5Ω.To raise the temperature of the air in a good-sized living room the time needed is ≈ 38 min.
What is Ohm's Law?Ohm's Law is a fundamental principle in physics and electrical engineering that describes the relationship between electric current, voltage, and resistance. It states that the current flowing through a conductor is directly proportional to the voltage applied across it, and inversely proportional to the resistance of the conductor. Mathematically, it can be expressed as:
I = V / R
A) To calculate the current, we use Ohm's Law: I = P/V, where I is the current, P is the power, and V is the voltage. In this case, P = 1500 W and V = 120 V, so I = 1500 W / 120 V = 12.5 A.
B) To calculate the resistance, we use Ohm's Law again: R = V/I, where R is the resistance, V is the voltage, and I is the current. Using the values we found in part A, R = 120 V / 12.5 A = 9.6 Ω.
C) To calculate the time, it takes to raise the temperature of the air in the room, we need to know the heat capacity of the air in the room. We can calculate this using the specific heat of air and the density of air, and multiplying by the volume of the room: Heat Capacity = (1006 J/(kg⋅∘C)) * (1.20 kg/m3) * (3.00 m * 5.00 m * 8.00 m) = 3,432,800 J/°C.
To raise the temperature of the air by 10.0°C, we need to transfer 3,432,800 J, so we can calculate the time it takes using the power of the heater and the heat capacity. Using the power of the heater and the heat capacity, we can calculate the time it takes as t = Heat Capacity / power = 3,432,800 J / 1500 W = 2,288 sec ≈ 38 min.
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what is bout, the z component of the magnetic field outside the solenoid?
The magnetic field in the Z component which is outside the solenoid is zero.
The magnetic field lines are present outside the solenoid, but there are significantly less of them there than there are inside the solenoid. This is known as the flux. As a result, the magnetic field outside is thought to be almost nil. It is more accurate to assume that the magnetic field outside the solenoid is zero if the solenoid is quite long. It is false close to the solenoid's edge. We consider the magnetic field outside the solenoid to be zero for practical purposes. This amount of flux divided by the area outside the solenoids gives the flux density, which is equal to the strength of the field outside the solenoid is zero.
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You are now about to make a Collage showing the different interactions that exist among organisms. Then, in 3-5 sentences explain the following
1. One of the interactions that exist in the environment.
2. Effects of your chosen interaction among organisms in their environment.
3. Cite an example to support your chosen interaction.
Answer:
1. One of the interactions that exist in the environment is symbiosis. Symbiosis is a type of interaction between two or more organisms where one organism benefits and the other organism is neither helped nor harmed.
2. Symbiosis can have a positive effect on the environment. For example, mutualistic symbiosis, where both organisms benefit, can increase the survival and reproduction of both species. This can increase biodiversity and stability in the ecosystem.
3. An example of mutualistic symbiosis is the relationship between bees and flowers. Bees collect nectar from flowers and in the process, they transfer pollen, which allows the flowers to reproduce. The bees benefit by getting food and the flowers benefit by getting pollinated. This relationship is essential for the survival of both bees and flowers and contributes to the biodiversity of the ecosystem.
A particle with mass 1.81 xio-3 kg and a charge of 1.22 times sign 10^-8 C has, at a given instant, a velocity v = (3.00 times sign 10^4 m/s)j. What are the magnitude and direction of the particle's acceleration produced by a uniform magnetic field B=(1.63 T)i+(0.980 T)j?Draw the velocity v and magnetic field B vectors. Since they have different units, their relative magnitudes aren't relevant. Be certain they have the correct orientations relative to the given coordinate system. The dot in the center of the image represents the particle. Recall that i, j, and k are the unit vectors in the x, y, and z directions, respectively.Find the acceleration vector for the charge. Enter the x, y, and z components of the acceleration in meters per second squared separated by commas. A= m/s^2
The acceleration vector for the charge is -8.892 x [tex]10^4[/tex] m/s² i + 2.17 x [tex]10^4[/tex] m/s² j, and is perpendicular to the plane formed by the velocity vector and the magnetic field vector.
The acceleration of a charged particle in a magnetic field is given by the Lorentz force equation:
F = q(v x B)
The magnitude of the acceleration is:
|a| = |q| |v x B|/m
The direction of the acceleration can be determined using the right-hand rule, which states that when the thumb of the right-hand points in the direction of v and the fingers curl in the direction of B, the extended palm of the hand points in the direction of a.
Given the given values, the acceleration vector will be:
a = q (v x B) / m = 1.22 x [tex]10^{-8}[/tex] C × (3.00 x [tex]10^4[/tex] m/s) x (1.63 T)i + (0.980 T)j / 1.81 x [tex]10^{-3}[/tex] kg = -8.892 x [tex]10^4[/tex] m/s² i + 2.17 x [tex]10^4[/tex] m/s² j
So the acceleration vector for the charge is -8.892 x [tex]10^4[/tex] m/s² i + 2.17 x [tex]10^4[/tex] m/s² j.
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A van traveling 110 km/h runs into a concrete wall. The front of the van crushes such that the driver, who is wearing seat belts and shoulder straps, comes to rest after traveling 0.60 m following the impact. a. Assuming constant acceleration, how much time passes between impact and rest? b. How large is the negative acceleration experienced by the driver? c. How many "g"s did the driver experience?
a) Assuming constant acceleration, the time passes between impact and rest is about 3.927×10⁻²s.
b) The negative acceleration experienced by the driver |a| is 778m/s².
c) 79.39g's the driver will experience.
What is the straightforward meaning of velocity?A vectorial representation of velocity is the displacement in space-time that an object or particle experiences. The standard unit for measuring velocity magnitude is the metre per second (m/s) (also known as speed).
a) [tex]V_{i}[/tex] = 110km/h = 30.56m/s
[tex]V_{f}[/tex] = 0
[tex]V^{2} _{f}[/tex] = [tex]V^{2} _{i}[/tex] +2as
0 = (30.56)² + 2a(0.6)
a = -778m/s²
Now [tex]V_{f}[/tex] = [tex]V_{i}[/tex] + at
0 = 30.56 + -778 t
t = 3.927×10⁻²s
b) The negative acceleration experienced by the driver |a| = 778m/s²
c) g = |a|/9.8m/s² = 79.39g's
79.39g's the driver will experience.
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if a ring particle survived for the age of the solar system, how many collisions would it undergo, given that each ring particle in the densest part of Saturn's rings collides with another about every 5 hours?
If a ring particle survived for the age of the solar system, the collisions would it undergo, given that each ring particle in the densest part of Saturn's rings collides with another about every 5 hours is 4.03 x 10¹³.
The solar system can be defined as the system including the Sun and all other objects that are gravitationally connected to the Sun. All the solar system objects rotate in the identical direction about the Sun. There are many planetary systems like ours in the universe, with planets orbiting a host star. Our planetary system is named the "solar" system because our Sun is named Sol, after the Latin word for Sun, "solar," and anything related to the Sun we call "solar." by this primary information, we can firmly conclude that if a ring particle survived for the age of the solar system, the collisions would it undergo, given that each ring particle in the densest part of Saturn's rings collides with another about every 5 hours is 4.03 x 10¹³.
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An aerobatic airplane pilot experiences
weightlessness as she passes over the top of
a loop-the-loop maneuver.
The acceleration of gravity is 9.8 m/s^2.
If her speed is 450 m/s at this time, find the radius of the loop.
Answer in units of km.
Javier is trying to lift a heavy old television. He is pulling up on the television with a force of 500N. Earth's gravity is pulling down on the television with a force of 500N.
The statement describes the forces on the television is (A). The forces are balanced, so there is no net force on the television. Javier's pulling force is equal to gravitational force.
How to add the forces inline?The forces that are inline can be added up. The force that has the opposite direction is negative.
We have
The pulling force, Fp = + 500 NThe gravitational force, Fg = - 500 NThe net force would be
∑F = F + Fg
∑F = 500 N + (-500) N
∑F = 0 N
Hence, the forces are balanced and the net force is zero.
Your question is incomplete, but most probably your full question was
Javier is trying to lift a heavy old television. He is pulling up on the television with a force of 500N. Earth's gravity is pulling down on the television with a force of 500N.
Assume all other forces on the television are balanced. Which statement describes the forces on the television?
The answer choices are
(A) The forces are balanced, so there is no net force on the television.
(B) The forces are unbalanced, so there is a net force on the television.
(C) The forces are unbalanced, so there is no net force on the television.
(D) The forces are balanced, so there is a net force on the television.
The answer is (A).
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a 2.00 c charge moves from a 50.0 v equipotential line to a 40.0 v equipotential line. what is the change in the electric potential energy of the charge field system?
The charge field system's electric potential energy changed by 20J.
What is the most accurate way to define potential energy?Potential energy's definition is quite simple: It is a type of energy that can exert force on other objects but is not now exerting any force on them. In other words, available energy concerns object positions rather than object motion.
What are five examples of potential energy?Potential energy can be transformed into kinetic energy by being stored. Potential energy can take on a variety of shapes, such as gravitational, magnetic, electrical, molecular, and elastic potential energy.
Change in electric potential energy
= charge x potential difference
= 2 x ( 50 - 40)
= 20 J
Potential will be decreased by this amount.
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whether or not an object (such as a plate, glass, or bone) breaks upon impact depends on the average force exerted on that object by the surface. when a 1.3 kg glass figure hits the floor, it will break if it experiences an average force of 348 n. when it hits a tile floor, the glass comes to a stop in 0.013 s. from what minimum height (in m) must the glass fall to experience sufficient force to break?
Minimum height is approximately 0.35 meter to experience sufficient force to break.
Let's use the following equation to calculate the glass figure's acceleration.
F = m * a
-712 = 3.8 * a
a = -712 ÷ 3.8
This is equivalent to -187 m/s2. Let's use the equation below to calculate the glass figure's speed shortly before the force was applied.
vf = vi + a*t
0 = vi + (-712 ÷ 3.8) * 0.014
vi = (712 ÷ 3.8) * 0.014
This is equivalent to 2.62 m/s. Let's use the equation below to calculate how far the glass figure must fall for it to reach this velocity.
Vi = 0 m/s, and vf2 = vi + 2 * g + d
[(712 ÷ 3.8) * 0.014]^2 = 2 * 9.8 * d
d = [(712 ÷ 3.8) * 0.014]^2 ÷ 19.6
This is approximately 0.35 meter.
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If a car travels 400m North in 20 seconds, what is its velocity (remember velocity is speed with
direction)
The velocity of the car which travels 400 meters towards north in 20 seconds is 20m/s.
What is Velocity?Velocity is the directional speed of an object which is under motion as an indication of the rate of change in the position which is observed from a particular frame of reference by the observer and it is as measured by a particular standard of time as well. It is a vector quantity as it has both the magnitude and direction. The SI unit of velocity is meter per second (m/s).
The velocity of the car can be calculated by the formula:
Velocity = Displacement / time
Displacement = 400 m towards north direction
Time = 20 seconds
Velocity = 400m/ 20 sec
Velocity = 20m/s
Therefore, the velocity of the car is 20m/s.
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a 60 kg person drives a 2000 kg car at 100 km/h over the top of a hill that has a radius of curvature of 100 m. find the normal force that the seat exerts on the person in the car as it tops the hill.
The normal force that the seat exerts on the person in the car is approximately 206000 N.
What do you mean by force?An interaction between objects is referred to as a force. It is called an interaction because when one object acts on another, the other object responds in kind.
To find the normal force that the seat exerts on the person in the car as it tops the hill, we can use the formula for centripetal force:
F = m * a, where F is the force, m is the mass, and a is the centripetal acceleration.
The centripetal acceleration is given by the formula: a = v² / r, where v is the velocity and r is the radius of curvature of the hill.
Plugging in the given values, we get:
a = (100,000 m/h)² / 100 m = 10^8 m/s²
To find the normal force, we need to use the weight of person and the car as the mass and the centripetal acceleration we just calculated.
F = (60 kg + 2000 kg) * 10^8 m/s²
F = 2.06 * 10^5 N or 206000 N
So, the normal force that the seat exerts on the person in the car is approximately 206000 N.
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A sample of neon effuses from a container in 74 seconds. The same amount of an unknown noble gas requires 151 seconds.(a) Identify the gas.
The unknown noble gas is argon. Argon is the third most abundant gas in Earth's atmosphere, making up around 0.94% of the total atmosphere.
It is also the most abundant noble gas, making up around 1.3% of the atmosphere. Argon is an odorless, colorless, and tasteless gas that is slightly heavier than air.
It is nontoxic and nonflammable. Argon has a low thermal conductivity, so it is often used as an inert gas shield in welding and other high-temperature processes. In this case, it took 151 seconds for the same amount of argon to effuse from the container, compared to 74 seconds for neon.
This indicates that argon has a much lower effusion rate than neon and is therefore a different gas.
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Contain(s) an objective description of the murder victim.
The murder victim was a white male in his early thirties, approximately 5 feet 8 inches tall with a thin build and brown hair.
What is victim?A victim is a person who has been harmed, either physically or emotionally, as a result of another person's actions or inaction. Victims may suffer physical injuries, psychological trauma, and/or financial losses. Victims also experience feelings of powerlessness, fear, anxiety, and anger. Victims of crime often feel a deep sense of injustice, which may manifest in the form of post-traumatic stress disorder, depression, or other psychological distress. Victims may also experience social stigma, which can have a long-term impact on their lives. Victims of crime may also have difficulty accessing justice and finding support to help them cope. It is important for victims of crime to have access to a range of services that can provide them with appropriate assistance and support.
He was wearing a white t-shirt and jeans at the time of his death. He had several stab wounds to his torso and a deep cut to his throat.
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what advantages do fiber optic cables offer over twisted pair cables and other media choices? what are the disadvantages of implementing fiber optic cables?
The main advantage of using optical fibre cable over unshielded twisted pair cable is its huge bandwidth. But even so, we use twisted pair cable at the consumer end on occasion.
The following are some advantages of using optical fibre cable: 1. Access to the internet Twisted pair cable's diameter is greater than that of optical fibre cable. Optical fibre cable has a tiny diameter due to its flexibility and thinness. 4. In twisted-pair cables, attenuation is very high. In optical fibre cables, attenuation is extremely low. More cable is allowed with fibre optic cables compared to copper twisted pair lines. Compared to copper twisted pair connections, fibre optic cables have a wider bandwidth. Installing the cables is affordable.
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standing waves on a string suppose that there was a ride at an amusement park that was titled the standing wave. which location - node or antinode - on the ride would give the greatest thrill? why?
Imagine there existed a rollercoaster called the standing wave at an amusement park, and that the first and last nodes of the ride would provide the greatest thrills.
In physics, a standing wave—also known as a stationary wave—is an oscillating wave in space with a fixed peak amplitude profile. The peak amplitude of the wave oscillations remains constant throughout all of space and time, irrespective of the location. Imagine there existed a rollercoaster called the standing wave at an amusement park. When two waves that are moving in opposing directions superimpose, a standing wave is produced. Two identical waves flow in opposing directions, therefore there is no net change in momentum or energy.
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A car drives over the top of a hill that has a radius of 50 m. What maximum speed can the car have at the top without flying off the road?
The centripetal acceleration is given by the formula: a = v^2 / r
where v is the speed of the car and r is the radius of the hill.
To calculate the maximum speed: v = sqrt(rgµ)
where g is the acceleration due to gravity (9.8 m/s^2) and µ is coefficient of friction.
v = (50 x 9.8 x 0.7) = 37.9 m/s or 135.8 km/h
What is centripetal acceleration?Centripetal acceleration also known as radial acceleration is the acceleration indicated towards the centre of any curved path and perpendicular to the velocity of the object. It causes an object to change its direction but doesn't alter its speed along a circular pathway.
Does speed change in centripetal force?The force can definitely accelerate the object but it cannot alter its speed. Whenever the unbalanced centripetal force acts perpendicular to the direction of motion, the speed of the object will remain constant.
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the density of osmium (the densest metal) is 22.57 g/cm3. what volume would be occupied by 4.42 kg of osmium?
Osmium has a density of 22.57 g/cm³, therefore 100.55 ml of space would be taken up by 1.50 kg with osmium.
Why is density important?The density of a place refers to the number of things there, which may include inhabitants, animal, trees, or artefacts. The density is calculated by dividing the number of objects by the breadth of the area. A country's population density is calculated by dividing the entire person by the area, expressed in square kilometres or miles.
The following formula can be used to determine density:
Density is calculated as mass divided by volume in litres.
Density = 22.57 g/cm³
Mass = 4.42 kg
In the equation, the value is replaced,
22.57 g/cm³ = 4.42 kg / volume
Volume = 22.75 g/cm³ × 4.42 kg
Volume = 100.55 ml
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Rank these throws based on the amount of time it takes the ball to hit the ground.
Rank from largest to smallest. To rank items as equivalent, overlap them.
10 m/s 60 degree angle
15 m/s 45 degree angle
20 m/ s 0 degree
10 m/s 90 degree angle
15 m/s 30 degree angle
15 m/s 60 degree angle
The order of projectile motion of the amount of times from largest to smallest is, (6)>(2)>(4)>(1)>(5)>(3).
The projectile motion is a free fall motion of the body (or an object) in the horizontal path with constant velocity. In the projectile motion, the horizontal velocity of an object remains constant but the vertical velocity of an object changes along its path.
Total time taken by the object between the point of projection and the point where the ball touches the ground is called time of flight. The time of flight is the sum of time of ascent and time of decent.
The concept required to solve this question is projectile motion of an object. Initially, calculate the time taken by the ball to hit the ground in each case. Finally, determine the order of the amount of time from largest to smallest by using the resultant values of the time taken by the ball to hit the ground in all cases.
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Gwen is completing a physics investigation involving the speeds of toy cars on a track. Two cars are going to be released from the top of a ramp and timed until they reach the bottom. Before her investigation, Gwen comes up with a hypothesis. She states that toy car A will be faster than toy car B. She runs three trials of her investigation and records her data.
20 POINTS PLSSS help...During her investigation, Gwen is using a reference point to help her in her measurements. What is a reference point used to measure?
A. energy
B. magnetism
C. mass
D. movement
Magnetism is using a reference point to help her in her measurements.
What is Magnetism?The force that magnets use to either attract or repel one another is known as magnetism.
The force that magnets use to either attract or repel one another is known as magnetism. Electric charges in motion are the source of magnetism.
Atoms, the smallest building blocks of matter, make up every substance. There are electrons in every atom, which are charged particles. The electrons that make up an atom's nucleus, or core, spin like tops.
Therefore, Magnetism is using a reference point to help her in her measurements.
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What types of energy transformation take place in battery operated radio?
Explanation:
In a battery-operated radio, energy is transformed from chemical energy stored in the batteries to electrical energy, which is then used to power the radio's electronic components and produce sound through the speakers. The electrical energy from the batteries is used to power the radio's circuits and drive the movement of the speakers' diaphragm, which produces sound waves. This process is known as electro-mechanical energy transformation.
Answer:
from mechanical to sound energy
the diameter of mars is about 1/2 the diameter of earth and its mass is about 1/10 the mass of earth. find the gravitational acceleration on the surface of mars.
The gravitational acceleration on the surface of mars is 3.71 m/s²
What is gravitational acceleration?
Gravitational acceleration is the rate at which an object accelerates when it is subjected to a gravitational force. It is usually denoted by the symbol g and is represented by the equation g = GM/r2, where G is the universal gravitational constant, M is the mass of the object, and r is the distance between the object and the attracting body.
Gravitational acceleration (g) = (Gravitational Constant * Mass of Mars) / (Radius of Mars)^2
g = (6.67 x 10^-11 m^3 kg^-1 s^-2 * 6.39 x 10^23 kg) / (3.38 x 10^6 m)^2
g = 3.71 m/s^2
Therefore, The gravitational acceleration on the surface of mars is 3.71 m/s²
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The work done in pushing a TV set a distance of 2 m with an average force of 20 N is
A) 2 J. B) 10 J. C) 20 J. D) 40 J. E) 800 J.
"The work done in pushing a TV set a distance of 2 m with an average force of 20 N is calculated to be 40 J."
The force used to move an object a specific distance is referred to as work in physics. It is determined by multiplying the force times the distance. It is the transfer of energy that occurs during movement.
Mathematically, W = F × s
Given that,
Distance in pushing a TV set = 2 m
Average force = 20 N
Work done while pushing a TV set = ?
Putting the above given values, we have,
W = F × s = 20 × 2 = 40 N-m = 40 J
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1. If the dielectric becomes damaged it can 'break down' like the air does when lightning strikes. What would happen to the charge on the plates?
Answer:
Explanation:
When the dielectric becomes damaged, it can no longer prevent the charge on the plates from leaking out. This process is known as dielectric breakdown. When the dielectric breaks down, the charge on the plates will begin to dissipate. This can result in a spark or arc, as the charges will be forced to jump the gap and form a conductive path. This can lead to potentially dangerous situations, as the energy released can be quite high. Additionally, the sudden change in the electric field can cause other electrical components to be damaged or destroyed, depending on the amount of energy released.
002 10.0 points
A figure skater begins spinning counterclockwise at an angular speed of 4.0 π rad/s. During a 4.4 s interval, she slowly pulls her arms inward and finally spins at 7.8 T rad/s. What is her average angular acceleration
during this time interval?
Answer in units of rad/s².
Answer:
0.86 rad/s² counterclockwise
Explanation:
Average angular acceleration is change in angular velocity over time.
α = (ω − ω₀) / t
α = (7.8π rad/s − 4.0π rad/s) / 4.4 s
α = (3.8π / 4.4) rad/s²
α = 0.86 rad/s²
Two small spheres spaced 20.0 cm apart have equal charge.
How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10-21 N?
Number of Electrons = ?
The electrons that must be present on each sphere if the magnitude of the force of repulsion between them is calculated to be 894 electrons.
Given that,
Force of repulsion = 4.57 × 10⁻²¹ N
The electrostatic force between the two charges is given by,
F = k q₁ q₂/r²
where,
k is the Coulomb's constant
q₁ = q₂ = q is the magnitude of the charge on each sphere
r = 20 cm = 0.20 m is the distance between the two spheres
We get the charge on each sphere by substituting and solving for q,
q = √(F r²/k) = √(4.57 × 10⁻²¹) (0.2)²/(9 × 10⁹) = 1.43 × 10⁻¹⁶ C
And since each electron has a charge of e = 1.6 × 10⁻¹⁹ C
Each sphere's net charge will be provided by,
q = N e
where,
N is the number of excess electrons
N = q/e = (1.43 × 10⁻¹⁶)/(1.6 × 10⁻¹⁹) = 894
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two forces f1 and f2 are acting on a box shown below causing the box to move to the right across a surface. the two force vectors are drawn to the same scale. which force does more work on the box? justify your answer.
F1 puts in more effort than F2. The displacement is greater in F1 due to the higher horizontal component.
How come F1 is quicker than F2?Overall, Formula 1 cars are faster and far more powerful than F2 cars. The amount of downforce generated by Formula 1 cars is astounding, reaching up to 5 Gs. Speed has an impact on downforce; when a car moves quicker, more downforce is produced.
What is the force's horizontal component?A force's horizontal component is the portion of the force that acts in a horizontal direction on the body, whereas a force's vertical component is the portion of the force that acts in a vertical direction on the body.
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A 60 cm diameter wheel accelerates from rest at a rate of 7 rad/s2. what is the tangential acceleration of a point on the edge of the wheel?
The tangential acceleration of a point on the edge of the wheel is calculated to be 2.1 m/s².
By definition, the angular acceleration, is equal to the rate of change of the angular velocity, ω:
α = Δω / Δt ----(1)
The linear velocity, v, can be expressed as follows using the definition of the angular velocity,
v = ω × r
⇒ Δv = Δω × r ----(2)
Putting Δω, in place of (1) in (2) gives us,
Δv = α × Δt × r
⇒ Δv/Δt = α × r ----(3)
Expression of linear acceleration, can be written as,
a = α × r
For a point on the edge of the wheel, the linear acceleration is tangent to the rim, and is equal to the product of the angular acceleration times the distance to the centre, which for a point on the edge of the wheel, is just the radius,
⇒ a = 7 rad/sec² × 0.3 m = 2.1 m/s²
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Look at the equation below. What does
the u represent?
a=V-U/t
U is represent is Speed .
What is Speed?
Measuring is the most important scientific concept. Many different types of quantifiable quantities can be measured using base or physical fundamental units. One such quantifiable quantity is speed, which computes the proportion of a moving object's distance travelled to its travel time. In this session, let's examine speed in further detail. An object is considered to be moving at uniform speed if it covers the same distance in the same period of time.
An object is considered to be moving at variable speed when it covers a varying distance at regular intervals of time.
Typical speed: The consistent speed determined by the ratio of the overall distance travelled by an object to the total amount of time it takes to go is known as average speed.
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Two cars each have a mass of 1050 kg. if the gravitational force between
them is 2.27 x 10-7n, how far apart are they? g = 6.67 x 10-11 n. (m/kg)2
The distance between the two cars each have the distance of 1050 kg is 17.99 x 10⁴ m
The mass of two cars = 1050 kg
The gravitational force between the two cars = 2.27 x 10⁻⁷ N
The distance between the two cars can be found using the formula,
F = g m₁m₂/r²
where F is the gravitational force
g is the gravitational constant
m₁,m₂ is the masses of the two cars
r is the distance between the two cars
Let us rearrange the above equation,
r² = g m₁m₂/F
Let us substitute the known values in the above equation, we get
r² = 6.67 x 10⁻¹¹ x 1050 x 1050 / 2.27 x 10⁻⁷
= 7353675 x 10⁻¹¹ / 2.27 x 10⁻⁷
= 3239504.41 x 10⁴
r = √3239504.41 x 10⁴
= 1799.86233 x 10²
= 17.99 x 10⁴ m
Therefore, the distance between the two cars is 17.99 x 10⁴ m
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a student in an electronics lab is studying the electrical properties of pieces of graphite. the student applies a potential difference of 24 v across the length of a cylindrical piece of graphite with a radius of 0.5 mm. the student has another piece of graphite of the same length but with a radius of 0.7 mm. the student wants the same current in both pieces of graphite. what potential difference should the student apply across the 0.7 mm piece?
The student should apply a 17V potential differential across the 0.7 mm piece.
How may potential differences be found?The potential difference between places A and B is defined as the change in potential energy (PE) of a charge (q) transported from A to B, divided by the charge (V = VB - VA).
The joules per coulomb, sometimes known as volts (V) in honor of Alessandro Volta, are the units of potential difference.
The change in potential energy (PE) of a charge (q) transported from point A to point B, divided by the charge, is thus used to determine the potential difference between points A and B as V = VB - VA.
Volt is the SI unit for electrical potential. V stands for it.
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