Water is the most significant and prevalent liquid on planet. There is no life without water. The region of the earth where liquid water is present is where life is found. Water exists as solid ice on other planets with pressures of 2500mmHg.
What are an example and the environment?The light you feel on your face, the wind that blows through your schoolyard and waves the flag, and even the clouds you see in the sky are all effects of the atmosphere of Earth. The atmosphere of Earth extends from the surface of the planet.
Which types of atmospheres are there?The four atmospheric layers that make up the Earth's atmosphere are called the troposphere, stratosphere, mesosphere, and thermosphere.
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Which statement about scientific notation is true?
A. It provides a way of measurement without units.
B. It is a system of mathematical symbols used to describe energy
and matter.
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ADMINIS
PARENT
O C. It allows scientists to invent new units of measurement.
D. It allows scientists to make calculations more easily.
Answer:
D.It allows scientists to make calculations more easily
Explanation:
For example; the number 0.00236 is written in scientific notation as 2.36×10−3 or as 2.36E-3. This helps mathematicians and scientists work easily with too large or too small numbers.
an inductor with an inductance of three henrys (h) is to be connected to a 60 hz circuit. what will the inductive reactance be?
The inductive reactance of the inductor will be 376.99 ohms.
What is an inductive reactance?Inductive reactance is the opposition or resistance provided by an inductor to a changing current flow. Ohm (Ω) is the SI unit for inductive reactance.
The inductive reactance (Xl) of an inductor can be calculated using the formula Xl = 2πfL, where f is the frequency of the circuit in hertz and L is the inductance of the inductor in henrys.
In this case, the circuit's frequency is 60 Hz and the inductance of the inductor is 3 H. So, the inductive reactance is:
Xl = 2πfL = 2π(60)(3) = 376.99 ohms.
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A ball rolls down a hill. it starts with velocity of 2 ms. after 2 seconds, the ball has a velocity of 12 ms. what is the acceleration of the ball? responses 2 ms2 2 m per s squared, 4 ms2 4 m per s squared, 5 ms2 5 m per s squared, 7 ms2
The acceleration is the change in velocity over time of the ball. Here in this case, when the ball rolls down the hill with initial velocity 2m/s and velocity after 2s is 12 m/s, then the acceleration will be 5m/s².
Acceleration is the change in velocity/ change in time.
Here it is given that the ball starts with a velocity of 2m/s. So at t=0, v = 2m/s.
So initial velocity = 2 m/s
The velocity after 2 seconds is given as 12 m/s
So final velocity = 12 m/s
The change in time = 2 s
Acceleration, a = change in velocity/ change in time
= final velocity - initial velocity / change in time
= (12 m/s - 2m/s)/ 2s = 5 m/s²
So the acceleration after 2 seconds will be 5 m/s².
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When a car is at the top of a circular path, there are two forces acting on it. What is the Net Force towards the center of the circle
In order for the car to move inside the circular route, the net force acting on it at the peak of the motion is at the circle's centre.
Newton's second law states that acceleration requires a net force that is not zero. An item travelling along a circular path experiences acceleration that is focused on the circle's centre. As a result, the centre is also the direction of the net force. The centripetal force is a common name for this net force.
The centripetal force needed for circular motion is produced as an car turns by the friction force acting on the car's rotated wheels.
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a 1,217 kg suv moving at 20.8 m/s strikes a 1,087 kg car moving at 14 m/s. their bumpers become locked and they continue to move as one mass. what is their final velocity as they move as a single mass?
The final velocity of the two vehicles as they move as a single mass is 18.42 m/s.
The total momentum of the two vehicles before the collision is:
momentum_initial = mass_suv ×velocity_suv + mass_car × velocity_car
The total momentum of the two vehicles after the collision is:
momentum_final = (mass_suv + mass_car) ×velocity_final
Since momentum is conserved, the initial momentum is equal to the final momentum:
momentum_initial = momentum_final
mass_suv × velocity_suv + mass_car × velocity_car = (mass_suv + mass_car) ×velocity_final
By substituting the given values, we can solve for the final velocity_final:
1217 kg * 20.8 m/s + 1087 kg * 14 m/s = (1217 kg + 1087 kg) * velocity_final
velocity_final = (1217 kg * 20.8 m/s + 1087 kg * 14 m/s) / (1217 kg + 1087 kg)
velocity_final = 18.42 m/s
The final velocity of the two vehicles as they move as a single mass is 18.42 m/s.
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What does the pressure at a point in a fluid depend on? Select all that apply: The depth of that point within the fluid. The pressure at the fluid's surface. The density of the fluid: The weight of the fluid directly above that point
The depth of that point within the fluid, the pressure at the fluid's surface, the density of the fluid, and the weight of the fluid directly above that point.
What is fluid?Fluid is a state of matter that is characterized by its ability to move and take on the shape of its container. Fluids are composed of particles that are free to move about, and can also exist as a gas or a liquid. Fluids are an important part of everyday life, with applications ranging from transportation of goods to the operation of complex machinery. Fluids are also used to study the behavior of particles in motion, as well as to understand the properties of matter in general.
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he slope at a point on a position-versus-time graph of an object is the object's speed at that point:
the object's average velocity at that point:
the object's instantaneous velocity at that point:
the object's acceleration at that point:
the distance traveled by the object to that point.
Option a is Correct. An object's speed at a given moment is given by the slope at that point on a position-versus-time graph of the object: is the average speed of the object at that time:
The slope of location vs time is velocity. The velocity is constant if that slope does not change. The velocity is a negative constant if the slope is negative and stable.
The slope of velocity against time is acceleration. The slope of the line will be +4 m/s if the object is travelling at a velocity of +4 m/s. The slope of the line will be -8 m/s if the object is moving at a velocity of -8 m/s.
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Correct Question:
The slope at a point on a position-versus-time graph of an object is the object's speed at that point:
a. the object's average velocity at that point:
b. the object's instantaneous velocity at that point:
c. the object's acceleration at that point:
d. the distance traveled by the object to that point.
The magnitude of the gravitational force acting on an object is called:
Answer:
Explanation: the magnitude of the gravitational force acting on an object is called weight..
a helicopter blade spins at exactly 110 revolutions per minute. its tip is 5.00 m from the center of rotation. (for each answer, enter a number.) (a) calculate the average speed (in m/s) of the blade tip in the helicopter's frame of reference. 3455.8 incorrect: your answer is incorrect. m/s (b) what is its average velocity (in m/s) over one revolution?
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The average velocity can be calculated as 3455.8 m/s.
What is average velocity?Average velocity is the rate at which an object's position changes over time. It is calculated by taking the displacement (change in position) over the change in time. Average velocity can be thought of as the object's overall speed in a certain direction.
The average velocity of the blade tip in the helicopter's frame of reference can be calculated by taking the circumference of the circle of rotation (2*pi*5.00 m) and dividing it by the time it takes for the blade to make one revolution (1/110 revolutions per minute). So the average velocity can be calculated as:
Average velocity = (2 * pi * 5.00 m) / (1/110 revolutions per minute)
= (2 * pi * 5.00 m) * (110 revolutions per minute)
= 3455.8 m/s
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the radius of an unknown planet is 3 times that of earth. if the planet has the same density as earth, what is the gravitational acceleration on its surface?
The gravitational acceleration on the surface of the planet is 29.43 m/s², if the radius of the planet is 3 times that of the earth.
Let the radius of the earth = R
Then, the radius of the planet = 3R
Let the density of the earth = d
Density of the planet is also d,
Acceleration due to gravity in terms of radius of the planet and the density of the planet, g₁ = (4/3)×πRdG
Acceleration due to gravity of earth, g = 9.81 m/s²
9.81 = (4/3)×πRdG
Let the acceleration due to gravity of the planet = g₁
g₁ = (4/3)×π×(3R)×d×G
g₁ = 3×9.81
g₁ = 29.43 m/s²
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what happened when you pushed the magnets together? what happens when you let go? when i pushed the magnets together, i felt when i let go, the spacecraft magnet
When magnets are pushed together, the north poles of one magnet will repel the north pole of the other magnet, and the south pole of one magnet will repel the south pole of the other magnet. This is known as repulsion.
When magnets are let go after being pushed together, they will naturally move away from each other as the repulsion force is no longer being applied. This is known as "releasing."
When two magnets are brought close to each other, the invisible lines of magnetic force, called magnetic fields, interact with each other. Opposite poles, such as the north pole of one magnet and the south pole of another magnet, are attracted to each other. This phenomenon is known as attraction. On the other hand, similar poles, such as the north pole of one magnet and the north pole of another magnet, will push away from each other. This is known as repulsion.
When magnets are pushed together, the repulsion force between them is greater than the attraction force. This is why they will move away from each other when they are let go. However, if the magnets are very strong or if they are physically prevented from moving away from each other, they will not move away from each other when they are let go.
In addition to this, the strength of the magnetic field decreases as you move farther away from the magnet, so the farther apart the magnets are, the weaker the force of attraction or repulsion between them will be.
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Base your answer on the weather map below, which shows the locations of a high-pressure center (H) and a low-pressure center (L) over a portion of North America. The isolines indicate surface air pressures. Which map shows the most likely location of clouds associated with these pressure centers
The 4th map(see attachment) shows the most likely location of clouds associated with these pressure centers.
What is pressure?The force applied to a substance's boundaries per unit of area is measured as pressure. The Newton per square metre (or pascal) is the accepted SI unit for pressure (Pa). Mathematically:
p = F/A
In general, the collisions between the molecules of a substance and the boundaries of the system result in pressure, also known as the force applied per unit area on the boundaries of a substance. As molecules collide with the walls, forces are generated that attempt to push the walls outward.
The pressure that a system puts on its surroundings is brought on by the forces produced by all of these collisions. In a closed system, pressure acts as a constant intensive variable. It only applies to liquid or gaseous systems.
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The cost of having a package delivered has a base fee of $9.70. Every pound over 5 lbs cost an additional $0.46 per pound. Write a linear model that represents the cost, C, for the total weight, w, in pounds of the package. Assume w Greater-than-or-equal-to 5 lbs.
C = 9.70 + 0.46(w - 5). This is a linear equation where C is the total cost, 9.70 is the fixed base fee, w is the weight of the package in pounds, and 0.46 is the additional cost per pound over 5 lbs. The term (w - 5) represents the weight of the package that exceeds 5 lbs, and the 0.46 is multiplied by this value to calculate the additional cost.
What is linear equation?A linear equation is an equation that can be written in the form of y = mx + b, where y is the dependent variable, x is the independent variable, m is the slope of the line, and b is the y-intercept. In this equation, the slope represents the rate of change of the dependent variable with respect to the independent variable, and the y-intercept is the point where the line crosses the y-axis. Linear equations can be represented graphically as a straight line, and the slope and y-intercept can be used to determine the equation of the line.
In the case of the cost equation provided, C is the dependent variable, and w is the independent variable. The slope is represented by the coefficient of w, which is 0.46, which means the cost will increase by 0.46 dollars for every pound added to the weight of the package. The y-intercept, which is the cost of the package when the weight is zero, is represented by the constant term 9.70.
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Explain the terms 'in phase' and 'out of phase'
Answer: Both are difference in angles.
Explanation:
Both are difference in angles.
If two waves are moving with same angles with time the they are called in phase, if moving with different angles with time then they called as out of phase.
Describe a situation in which work is done on an object.
Answer:
Explanation:
A situation in which work is done on an object would be when a mechanic is performing maintenance on a vehicle. The mechanic would be responsible for inspecting the vehicle, replacing necessary parts, and performing any necessary repairs. This would involve using tools such as wrenches, screwdrivers, and other specialized equipment to remove, replace, and repair the various components of the vehicle. Once the maintenance is completed, the mechanic would test the vehicle to make sure it is in proper working order before returning it to the owner.
Answer:
In order to accomplish work on an object there must be a force exerted on the object and it must move in the direction of the force. If either of those conditions are not met, then there is no work.
Explanation:
Work done by the gravity on a rocket going perpendicular upwards is an example of negative work.
Define the following terms.
1.ignition temperature.
2.combustion.
3.fuel.
4.calorific value of a fuel.
Answer:
1) ignition temperature- the minimum temperature that is required to start or cause combustion.
2) combustion - a chemical process in which a substance reacts rapidly with oxygen and gives off heat.
3) fuel - material such as coal, gas, or oil that is burned to produce heat or power.
4) calorific value of a fuel - the quantity of heat produced by its combustion – at constant pressure and under “normal” (standard) conditions
) If qa and qb are positive, and qc and qd are negative, and the magnitude of all charges is the same, the net force on the positive charge q is
If qa and qb are positive, and qc and qd are negative, and the magnitude of all charges is the same,then the net force on the positive charge q is zero
What is charge?Charged material feels a force when it's exposed to a magnetic wave because of the physical property of electric charge. You can carry a positive or negative electric charge. Unlike charges attract each other while like charges repel one another.
What causes electrons to be charged?Negatively charged electrons is pulled to positive-charged protons because opposing charges attract. Because of how they behave in an electric field, electrons are considered to be negative particles.
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A vertical spring scale can measure weights up to 240 N . The scale extends by an amount of 14.5 cm from its equilibrium position at 0 N to the 240 N mark. A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.50 Hz .
Ignoring the mass of the spring, what is the mass m of the fish?
Express your answer in kilograms. My ans is 408396.82 kg and it is wrong
The mass of the fish is 6.71kg.
First, we will calculate the angular speed of the system:
w = 2πf
where,
ω = angular speed = ?
f = frequency = 2.50 Hz
Therefore,
w = 2 π * 2.50
w = 15.7 rad/s
Now, we will use Hooke's Law to find out the spring constant of the spring:
K=f/Δx
where,
K = spring constant =?
F = force applied = maximum weight = 240 N
Δx = extension = 14.5 cm = 0.145 m
Therefore,
K=1655N/m
Now, we will use the formula for the angular speed of a spring-mass system to find out the mass of the fish:
w = [tex]\sqrt{k/m}[/tex]
m = k/w²
m = 1655/(15.7)²
m = 6.71kg
What is Hooke's law in simple terms?Hooke's law states that the amount of force applied to an elastic object is proportional to how far it stretches. However, if the object is overstretched it will not spring back. Hooke's Law only applies if an elastic object is not overstretched.
What is the spring constant k value?The letter k represents the “spring constant,” a number that essentially tells us how “stiff” a spring is. If you have a large value of k, that means more force is required to stretch it a certain length than you would need to stretch a less stiff spring the same length.
Thus, the mass of the fish is 6.71kg
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An electron at point A in (Figure 1) has a speed v0 of 1.40×106 m/s . a. Find the magnitude of the magnetic field that will cause the electron to follow the semicircular path from A to B. b. Find the time required for the electron to move from A to B. c. What magnetic field would be needed if the particle were a proton instead of an electron?
Therefore, 1.61 x 104 T of magnetic field is required to make the electron travel in a semicircle from point A to point B.
What is a magnetic field, exactly?
The area in which the force of magnetism acts around a magnetic material or a moving electric charge is known as the magnetic field. a diagram that shows the magnetic field and how a magnetic force is distributed inside and outside of a magnetic substance.
What causes a magnetic field to exist?
The same poles repel one another whereas opposite poles are drawn to one another. The north-seeking poles of the iron's atoms line up in the same direction when it is rubbed against a magnet.
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I GIVE BRAINLIST
At the top of a frictionless inclined plane, a 0.50-kilogram block of ice possesses 5.0 joules of gravitational potential energy with respect to the bottom of the incline. After sliding halfway down the plane, the block's gravitational potential energy is _______.
The potential energy of the block at halfway down the incline is 2.5 J.
What is the block's gravitational potential energy?The gravitational potential energy of the block is calculated by applying the principle of conservation of energy as show below.
Mathematically, the formula for conservation of energy is given as;
E = K.E + P.E
where;
K.E is the kinetic energyP.E is the potential energyBased on law of conservation of mechanical energy, the block will possess maximum potential energy at the maximum height and zero kinetic energy. Also at the half way down the fall of the block, it will have equal kinetic and potential energy.
Finally, at the bottom of the incline the block will have maximum kinetic energy and zero potential energy.
The potential energy of the block at halfway down the incline is calculated as;
P.E = K.E = ¹/₂ x 5 J
P.E = 2.5 J
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suppose you were given a new unknown material and wanted to place it on the electrostatic series. describe tests you could do to accurately
electrostatic attempting to calculate the charges of two friction-charged items. Include an explanation of WHY electrons flow from one material to another.
Which substance produces static electricity the best?Wool, human hairs, dry skin, silk, rayon, tissue paper, plastic wrap, and polyester are examples of materials that tendency to gain or lose electrons; when you tested these materials, you should have discovered that they shifted the silver ball similarly to how the Expanded polystyrene plate did.
What is an example of electrostatic charge?On insulating or unground surfaces, an excess or deficit of electrons results in static electricity, often known as an electrostatic charge. Triboelectric charges—charges created by friction between the two surfaces, for example the movement of two surfaces—are what cause it to occur.
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you are on a desert island and there are two identical black boxes. one of them is a voltage source, the other is a current source. how can you tell which is which?
One way to determine which black box is a voltage source and which is a current source is by measuring the voltage and current at different points in the circuit, or using multimeter to measure voltage and current.
A voltage source will maintain a constant voltage across its terminals regardless of the current flowing through it, while a current source will maintain a constant current through its terminals regardless of the voltage across it.
Another way is to observe the behavior of the circuit when a load is connected. If the circuit behaves as if the voltage across the terminals is constant, it is likely a voltage source. If the circuit behaves as if the current through the terminals is constant, it is likely a current source.
Additionally, you can use a multimeter to measure the open-circuit voltage and short-circuit current of the black boxes. A voltage source will have a high open-circuit voltage and a low short-circuit current, while a current source will have a high short-circuit current and a low open-circuit voltage.
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in order to slide a heavy desk across the floor at a constant speed, you have to exert a horizontal force of 500 newtons. compare the 500 n horizontal pushing force to the frictional force between the desk and the ground. is the frictional force greater than, less than, or equal to 500 n? explain.
According to question this happend because of the constant speed.
How does frictional force work?Friction refers to the force that prevents two solid objects from sliding or rolling over each other. Although frictional forces, like the traction required to walk while slipping, may be advantageous, they can provide a significant amount of resistance to motion.
What occurs to an object whenever a net force is exerted to it? The formula F net = m*a accelerates!
What does the desk moving at a CONSTANT pace tell you about the acceleration, then? The speed has changed.
m*a = Fnet Fnet Equals 0 because a = 0.
Fnet, the force's total, represents the force's positive direction. Forces in the direction of F added together equal F - friction. friction, or F.
Friction hence equals 500 N in the opposite direction if F = 500 N.
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A bungee jumper with mass 65.0 kg jumps from a high bridge. After arriving at his lowest point, he oscillates up and down, reaching a low point seven more times in 43.0 s. He finally comes to rest 25.0 m below the level of the bridge. Estimate the spring stiffness constant and the unstretched length of the bungee cord assuming SHM.
The spring stiffness constant is 26.2 N/m and the unstretched length of the bungee cord is 0.69 m.
What is spring constant?The definition of the spring constant is related to Hooke's law and simple harmonic motions. In order to define the spring constant and comprehend how it operates, we must first examine Hooke's law. As long as the applied load is below the elastic limit, the theory of elasticity states that when a load is applied to a spring, it will naturally extend proportionally. We now understand that when an object is subjected to force, it tends to deform in some way.
Given that;
mass of the bungee jumper, m = 65 kg
time of motion, t = 43 s
distance to come to rest, d = 25 m
The period of oscillation of bungee jumper is calculated as;
T = t/n
T = 43/7
T = 6.14 s
The spring stiffness constant is calculated as;
T = [tex]$ 2\pi \sqrt{\frac{m}{k} }[/tex]
[tex]$ 6.14 = 2(\frac{22}{7}) \sqrt{\frac{25}{k} }[/tex]
k = 26.2 N/m
The extension of the cord is calculated as;
F = kx
mg = kx
x = mg/k
x = [tex]$\frac{\left(65\times 9.8\right)}{26.2}[/tex]
x = 24.31 m
The unstretched length of the bungee cord is calculated as;
Δx = l₂ - l₁
l₁ = l₂ - Δx
l₁ = 25 - 24.31
l₁ = 0.69 m
Thus, The spring stiffness constant is 26.2 N/m and the unstretched length of the bungee cord is 0.69 m.
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consider two identical pails of water filled to the brim. one pail contains only water, the other has a piece of wood floating in it. which pail has the greater weight?
When two identical pails of water filled to the brim. one pail contains only water, the other has a piece of wood floating in it. Wood pail has the greater weight due to Archimedes' principle.
Considering only a certain amount of content can fit in each bucket. A bucket containing heavy material will weigh more. The amount of water in the bucket will be greater than it actually is because of the ball, hence the bucket with the ball will hold less water while the bucket without the ball will hold more.
The upward buoyant force that is applied to a body submerged in a fluid, whether wholly or partially, is equal to the weight of the fluid that the body displaces, according to Archimedes' principle (sometimes spelled Archimedes' principle). The Archimedes' principle is a fundamental physical law in fluid mechanics. It was created by Syracuse's Archimedes.
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What fraction of its electrons have been removed? the density of copper is 8900 kg/m3.
The fraction of its electrons which have been removed is calculated to be 0.02442 × 10⁻⁹.
Given that,
Diameter of the copper ball = 2.00 mm = 0.002 m
Charge on ball = 40 nC = 40 × 10⁻⁹ C
Density of copper = 8900 Kg/m³
Now let us calculate,
The number of electrons removed, n = charge on the ball/charge of an electron
Charge on a single electron = 1.6 × 10⁻¹⁹ C
Thus, n = (40 × 10⁻⁹)/(1.6 × 10⁻¹⁹) = 25 × 10¹⁰ electrons
Mass of copper ball = volume × density = 4/3 π × (d/2)³× 8900 = 4/3 π × (0.02/2)³× 8900 = 0.03726 gm
Molar mass of copper = 63.546 g/mol
Number of mol of copper in 0.03726 grams = 0.03726 / 63.546 = 5.86 × 10⁻⁴ mol
1 mol of a substance has = 6.022 × 10²³ atoms
5.86 × 10⁻⁴ mol of copper contains = 5.86 × 10⁻⁴ × 6.022 × 10²³ atoms = 35.88 × 10¹⁹ atoms
A neutral copper atom has 29 electrons.
So, number of electrons in ball = 29 × 35.88 × 10¹⁹ = 1023.37 × 10¹⁹ electrons.
Hence, the fraction of electrons removed = (25 × 10¹⁰)/(1023.37 × 10¹⁹) = 0.02442 × 10⁻⁹
The given question is incomplete. The complete question is 'A 2.0-mm-diameter copper ball is charged to 40 nC.'
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at a given moment a plane passes directly above a radar station at an altitude of 6 miles and a speed of 500 mph. suppose 0 is the angle between the line segment joining the plane and the radar station and the horizontal
The rate of change of angle of elevation between the radar station and airplane is - 83.33rad / 109hr
The plane is traveling at 500 mph.
Over the radar station, the aircraft is flying at a height of 6 miles.
the airplane's distance after 10 minutes
distance = speed x time
= 500 mil/hr x 10 min
Since the speed is hour let us convert it to mins
= 500 x 10 x 1/60
= 5000 / 60
= 83.33 miles
Let's thus assume that the aircraft is exactly 3 miles above the radar station at that location.
therefore it is possible to determine the elevation angle between the radar station and the aircraft by
O represents the side that is opposed to the angle of elevation, and tan = O / A.
The angle of elevation's neighboring side is designated as A.
However, in order to determine the rate of change in angle of elevation, let's distinguish between the two sides with respect to time.
sec²∅ d∅/dt = (AdO/dt - O dA/dt)/ A²
d∅/dt =( A (AdO/dt - O dA/dt)) / sec²∅A²
d∅/dt =( 83.33(0)- 10(500mil/hr) ) / sec²( 83.33)²
Since the height will remain constant, the derivative of altitude will be zero while the airplane's travel distance varies over time.
d∅/dt =( 83.33(0)- 10(500mil/hr) ) / 109/100( 83.33)²
We had found the value of sec²θ = (hyp/adj)²
d∅/dt =- 5000rad / 109hr
Now , let us convert in terms of rad/min
d∅/dt =- 5000rad) / 109hr x 60
d∅/dt =- 83.33rad / 109hr
Your question is incomplete but most probably your full question was
'At a moment; plane passes directly above radar station at an altitude of 6 miles and a speed of 500 mph: Suppose 0 is the angle between the line segment joining the plane and the radar station and the horizontal . How fast is 0 changing 10 minutes after the plane passes over the radar station?'
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if a 1,000 kg car is acceleration at a rate of 4 m/s 2 and experiencing 300 n of drag force, how much force do the engines have to produce? ignore any frictional effects with the road.
The force do that the engines have to produce is 4,300 N. The result is obtained by using the Newton's second law.
What is Newton's second law?The Newton's second law states that "The acceleration is directly proportional to the net force acting on an object and inversely proportional to the object's mass." It can be expressed as
a = ∑F/m
or
∑F = ma
Where
∑F = net forcea = accelerationm = object's massA 1,000 kg car is accelerated at a rate of 4 m/s². It experiences 300 N of drag force. Find the force do that the engines have to produce!
We have
m = 1,000 kga = 4 m/s²fd = 300 NLike friction, drag force is the force acting opposite to the motion of an object.
Using the Newton's second law, we will get the force have to produce.
∑F = ma
F - fd = ma
F = fd + ma
F = 300 + 1,000 × 4
F = 300 + 4,000
F = 4,300 N
Hence, the engines have to produce the force of 4,300 N.
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adolf and ed are wearing harnesses and are hanging at rest from the ceiling by means of ropes attached to them. face to face, they push off against one another. adolf has a mass of 120 kg, and ed has a mass of 73 kg. following the push, adolf swings upward to a height of 0.48 m above his starting point. to what height above his own starting point does ed rise?
When Adolf swings, kinetic energy is converted to potential energy kg = 4,204.8m/s
What exactly does kinetic energy mean?The energy a thing has as a result of motion is known as kinetic energy. A force must be applied to an object in order to accelerate it. We must make an effort in order to apply a force. After the work is finished, energy is transferred to the item, which then moves at a new, steady velocity.
Consider Adolf
KG= M
120kg
73kg
0.48m
kg=120 *73kg*0.48m/s
kg = 4,204.8m/s
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A balloon is climbing vertically upwards with a constant velocity of 4.2ms".
a sandbag is dropped from the balloon and hits the ground 3.6 seconds later.
calculate or find:
a) velocity of the sandbag as it hits the ground.
b) height of the sandbag at the instant that it is dropped.
The sandbag is tumbling down while the balloon is rising. Motion is present in both the uphill and downward 108m directions.
What is an easy way to define velocity?Velocity is a vector representation of a particle's or object's motion with regard to time. The standard unit measuring velocity magnitude is the meter per second, which is commonly referred to as speed.
What is a good instance of velocity?Simply said, velocity is the rate of motion of an object in a specific direction. Using an automobile driving north on the a highway as an example, or a rocket after it has launched, as an example of speed.
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