The gravitational potential energy of the penny with respect to the ground is 8.575 J.
Gravitational Potential Energy:
The potential energy that a huge item has in relation to another massive object due to gravity is known as gravitational energy or gravitational potential energy. When two objects descend toward one another, the potential energy associated with the gravitational field is released (transformed into kinetic energy).
Mathematically,
[tex]PE=mgh[/tex]
Where,
[tex]PE=[/tex] Gravitational Potential Energy
[tex]m=[/tex] Mass of object
[tex]g=[/tex] Gravity
[tex]h=[/tex] Height
We have given that,
Mass of a penny; m = 2.5 g =0.0025 kg
Height of a penny; h = 350 m
We know that,
[tex]PE=mgh[/tex]
[tex]PE=(0.0025kg)(9.8m/s^{2} )(350m)[/tex]
[tex]PE=8.575J[/tex]
Hence,
The gravitational potential energy of the penny with respect to the ground is 8.575 J.
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If a wheel tart from ret what i the angular velocity after 4. 20 ha elaped, auming the force i acting during that time?
For finding angular velocity, we need angular displacement Ф or angular acceleration α. In this question, the information provided is only time elapsed. So, with a given input, angular velocity can't be calculated.
Angular velocity is a measure of rotational rate. This gives how fast an object is moving about an axis. It is represented by the symbol ω (omega). It is a measure of angular displacement per unit of time.
Angular velocity = Angular displacement/time
ω = Ф /t
Angular displacement is the angle made during rotation per unit of time. Angle is measured in radians.
There is a relation between angular velocity and linear velocity.
v = r. ω
means. linear velocity = radius × angular velocity
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what is the maximum kinetic energy of the photoelectrons when light of wavelength 300 nm falls on the same surface?
The Maximum Kinetic energy of the photoelectrons is 3.84 x 10⁻¹⁹J.
In response to light, the photoelectric effect produces photo electrons. By absorbing electromagnetic radiation, the photoelectric effect causes free electrons to be released from the surface of metals photons. Photo electrons are the emitted electrons in question. With the aid of Einstein's photoelectric equation, the query can be answered.When the incident frequency exceeds or is equal to the threshold frequency, photo electrons are only released. The kinetic energy of the light will be negative, which is not possible, if the threshold frequency is higher than the incident frequency. Work function value is always positive.[tex]E=hv[/tex]energy for one electron is 3.84 x 10⁻¹⁹J[tex]x=\frac{hC}{E}[/tex]After substituting all values i.e h= 6.6 x 10⁻³⁴, C=3 x 10⁸, E=3.84 x 10⁻¹⁹J , we get x=518nm.So , E=3.84 x 10⁻¹⁹JTo learn about Work function -
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a 710 kg car drives at a constant speed of 23 m/s . it is subject to a drag force of 500 n.
A. To drive the car on level ground, the engine needs to produce 11,500W of power.
b. The car's engine must provide 17,084W in power in order to move the vehicle up a hill with a 2.0 grade.
What is speed and how is it used?Speed is indeed an illustration of an amphetamine. Substantial amounts of dopamine are produced by this central nervous system stimulation. A chemical in the brain associated with reward and pleasure is called dopamine. There are numerous types of amphetamines.
Briefing:(a).The two forces at action are the drag force, D, which pushes the car backward, as well as the driving force, F, which pushes it vehicle forward. Since there can be no net force,
F-D=0
We know that D=500 N, so
F=D
F=500N
The force produced by the engine (F) and the vehicle's speed (v=23 m/s) are multiplied to produce the power used by the engine, so:
P=Fv
=(500N) (23m/s)
=11,500W
(b).the component of the weight of the car parallel to the slope, which acts against the motion of the car. Its magnitude is given by:
Wₓ=(mg)sin
=(710kg)(9.8m/s²)(sin2.0°)
=242.8N
F-D-Wx=0
F=D+Wx
=500N+242.8N
=248.8N
Consequently, this time the engine's power output
P=Fv
=(742.8N)(23m/s)
=17,084W
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The complete question is-
A 710 kg car drives at a constant speed of 23 m/s . it is subject to a drag force of 500 n. what power is required from the car's engine to drive the car (a) on level ground? (b) up a hill with a slope of 2.0 ∘ ?
when two sources of waves with the same frequency are active, what must the path length difference be at some point in space for the waves to interfere destructively?
The path difference for destructive interference is 2n/x.
When waves from two different sources collide, two-point source interference occurs. If the wave source generates circular waves, the wavefronts will collide within the medium and create a pattern. The nodal and antinodal lines, also known as antinodal lines and nodal lines, are what give the pattern its distinctive appearance. The exact center of the pattern will have an antinodal line, with nodal and antinodes alternating to the left and right of it, if the wave sources have identical frequencies.[tex]I=iA+iB+iC+iD+.............[/tex]where I is the net interference.To study about antinodes -
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A book at rest on the table has a weight of 8N. At what rate the book is accelerating?
Answer:
.8163 kg
Explanation: W=mg
The newtons = weight
Force due to gravity= 9.8m/s ^2
8N=m(9.8m/s^2)
M= .8163 kg
An object has a kinetic energy of 500 J and a mass of 30 kg. How fast is the object moving?
kinetic energy is (m·s²)/2
m = mass
s = speed
so,
500 = (30 x s^2 )/2
1000 = 30 x s^2
100/3 = s^2
s = [tex]\frac{10\sqrt{3} }{3}[/tex]
when current flows in a conductor, a magnetic field is produced. as free electrons move in one direction, their individual magnetic fields ? .
A magnetic field is created in a conductor when current is flowing through it. Free electrons' magnetic fields add up as they flow inside a single direction.
What do you mean of current?Molecules or atoms lacking in electrons, which are frequently used as carriers of electric charges, move as current. Currently is frequently represented with the capital letter I. The standard component is the ampere, which is represented by the letter A.
What is type of current?Current flow (DC) and alternating current (AC) are the two types of current used in electricity (AC). Electrons pass only in the direction of direct current. Direct current is produced by batteries. Electrons move both in directions during alternating current. Electric current produced by power plants is AC.
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4. How (about) far from San Francisco is the epicenter that you found? What would the
difference in arrival times of the P waves and S waves be for a recording station in San
Francisco?
To calculate the distance from the earthquake to the station, divide the arrival times of the P and S waves. Calculate the separation between the initial P and initial S waves. The first P and S waves in this instance are separated by 24 seconds.
Where is the earthquake's hypothetical epicenter, Grade 10?The beginning of the earthquake's rupture is where the epicenter of a hypothetical earthquake is situated. The epicenter is the location that is directly above the Earth's surface.
Where exactly is the epicenter?The focal point is the location where an earthquake begins within the crust of the Earth. The epicenter is a location on the surface of the Earth that is directly above the focus.
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a book is being pushed to the right across a desk at a constant speed. name the force depicted by the leftward arrow.
The force depicted by the leftward arrow will be the force of friction.
What is friction?Friction is a force that opposes relative motion between surfaces in contact.
Types of frictionIf two surfaces are in contact and moving relative to one another, then the friction between them is called kinetic friction. When objects are stationary, static friction can act between them; the static friction is usually greater than the kinetic friction between the surfaces.
When a book is pushed to the right across a desk at constant speed, the force of friction will act in the opposite direction to try and stop the opposition of the motion of the book.
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What does the amplitude of sound refer to?
the sound’s volume
the sound’s frequency
the sound’s duration
the sound’s pitch
The amplitude of sound refers to the sound’s volume or loudness.
What is amplitude of sound?A sound wave's amplitude measures the height of the wave. When a sound is made, the maximum displacement of the medium's vibrating particles from their mean position determines the amplitude of the sound wave. It is the separation between the wave's crest or trough and its mean location.
The relationship between loudness and sound amplitude is straightforward. A sound wave's amplitude determines how loud it will be; the larger the amplitude, the louder the sound. The sound will be weak if the amplitude is minimal.
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joe and bill are playing tug-of-war. joe is pulling with a force of 200 n. bill is simply hanging on to the rope. neither person is moving. what is the tension of the rope?
The solution indicates that the rope's tension is 200 N this is because of the static equilibrium.
What exactly is static equilibrium?Dynamic equilibrium is a state in which bodies are moving at a constant speed, as opposed to static equilibrium, which is a state in which bodies are at rest (rectilinear motion). The total amount of forces acting on them is 0 in both situations.
What is the static equilibrium equation?the total of all external forces that affect the body, where m is its mass and is the linear acceleration of its centre of mass The constant acceleration is zero when everything is in balance.
According to the given information:F is the force with which Joe pulls (200 N)
F′ is the force with which Bill holds on to the rope
T is the tension of the rope to the right
T′ is the tension of the rope to the left
The system created by Joe, the rope, as well as Bill is said to be in static equilibrium if it does not move, in which case both velocity of the object are zero.
Let's say we cut the rope in an idealized manner to demonstrate the tensions and internal forces.
Applying the idea of the horizontal forces' sum being equal to zero, which is the first requirement of static equilibrium with respect to the X-axis.
∑Fx = 0
T - F = 0
T = F
= 200 N
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the total mass of the hydrogen gas in the hindenburg zeppelin was 18,000 kg. what volume did the hydrogen occupy
Volume occupied by hydrogen gas is ≅ 2.0 × 10⁵ m³.
What is an ideal gas law?
An equation of state that characterizes perfect gases is called the ideal gas law. When explaining how gases will behave under ideal circumstances, this equation of state, which links a gas's pressure, volume, temperature, and mass, is highly helpful. For gases, this is the most typical equation of state.
Given,
Mass of hydrogen, m = 18000 kg
Pressure, P = 1 atm
Temperature, T = 0°c.
Using Ideal gas law, PV = mRT
Where, R = gas constant (R= 4124.4 J/kg-K)
Putting values in the equation
PV = mRT
V = [tex]\frac{mRT}{P}[/tex]
= [tex]\frac{18000kg X 4124.4 J/Kg - K X(0+273) K}{1 atm X 101325 Pa/atm}[/tex]
= [tex]\frac{18000 kg X 4124.4 \frac{N.m}{kg.K}X (0+273) K }{101325 \frac{N}{m^{2} } }[/tex]
= 200022.715 m²
≅ 2.0 × 10⁵ m³.
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An accelerator laboratory is considering using a solid-state detector as part of a high-energy experiment. What would be an advantage of using a solid-state detector?.
An accelerator laboratory is considering using a solid-state detector as part of a high-energy experiment, it converts part of the particles energy directly into electric current this would be an advantage of using a solid-state detector.
What is solid-state detector?Radiation detectors that use a semiconductor material as the detecting medium are known as solid-state semiconductor detectors. When these detectors come into contact with ionising radiation, they generate a pulse of electric current using pairs of charge carriers, electrons and holes.
It converts part of the particles energy directly into electric current, this would be an advantage of using a solid-state detector.
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in a circuit with two identical components connect in parallel, the current which flows through it's different branches are different or the same
Answer:
same,
my advise is you add more points it will make everyone anwser quicker.
how much force is required to accelerate a 15 passenger van weighing 1955kg at a rate of 26.82 m/s^2
Answer:
51,834.1 Newtons.
Explanation:
To find the force required to accelerate an object, you can use the formula force = mass x acceleration. In this case, the force required to accelerate a 15 passenger van weighing 1955 kg at a rate of 26.82 m/s^2 would be 51,834.1 Newtons.
2. suppose that a 1000 kg car is traveling at 25 m/s (55 mph). its brakes can apply a force of 5000 n. what is the minimum distance required for the car to stop?
The minimum distance required by the car to stop a 62.5 m.
The mass of the car is given to be 1000 kg and it is travelling at a speed of 20 the brakes are applied by the car that is producing force of 5000 Newton.
Firstly the negative acceleration produced in the car will be,
F = Ma
M is the mass of the car,
F is the force appoint by the brakes and,
a is the negative acceleration.
Putting values,
5000 = 1000(a)
a = 5m/s².
So, the negative acceleration produced by the brakes is 5m/s².
The minimum distance required by the car to stop will be given by other relation,
D = U²/2a
Where, U is the initial speed of the car,
Putting values,
D = 25×25/2×5
D = 62.5m.
So, the stopping distance of the car will be 62.5 m.
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4. You take a running leap from a diving board at 1.5 m/s and hit the water 1.5 seconds later. How far (horizontally) from the diving board did you land?
Answer:
[tex]\huge\boxed{\sf S = 2.25\ m}[/tex]
Explanation:
Given data:Speed = v = 1.5 m/s
Time = 1.5 s
Required:Distance = S = ?
Formula:S = vt
Solution:S = (1.5)(1.5)
S = 2.25 m[tex]\rule[225]{225}{2}[/tex]
Two students are running across country race. One has a mass of 60 kg, while the other has a mass of 68 kg if they are both running with a speed of 7 m/s which has more momentum? Why?
Answer:
The second student with mass 70kg has more momentum
Explanation:
Using the formula:
p = m × v
Where;
p = momentum (kgm/s)
m = mass (kg)
v = velocity (m/s)
According to this question, two students are running in a cross country race.
Student 1 has the following; m = 60kg, v = 7m/s
Student 2 has the following; m = 70kg, v = 7m/s
Using p = mv
Student 1, p = 60 × 7 = 420 kgm/s
Student 2, p = 70 × 7 = 490 kgm/s
From the result of the above calculations, student 2 with mass 70kg has more momentum.
16. when the pressure at the hose valve outlet exceeds a predetermined pressure, how are fire fighters in most jurisdictions alerted of the high pressure?
Warning signs are fire fighters in most jurisdictions alerted of the high pressure.
How is a fire suppression system designed to operate?By taking away heat or oxygen or by interfering with chemical reactions, suppression agents put out fires. When the system is turned on, the agent moves from the cylinder to the safe area either directly through the detection tube or via hoses and nozzles that are connected to it.
The Most Popular Styles of Fire Suppression Equipment
Systems for putting out fires that use water. Chemical Foam Suppression Systems, Pneumatic Heat Detection Tubes, Pressurized Gas Systems, Foam Deluge Systems, and Water Extinguishing Systems are some of the most popular fire protection systems.
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find the potential energy of a 2 kg ball 15 m in the air
Answer:
294 Joules
Explanation:
Use the Potential Energy Formula and plug in the numbers to be 2kg(mass)*15 meters (height above ground)* 9.8(gravitational acceleration of the earth) = 294 Joules
What does a distance-time graph represent?
A sloped line on a distance-time graph denotes motion of the item. In a graph of a distance versus time, the line's gradient or slope equals the object's speed. The steeper the line, the faster the thing moves (and the greater the gradient).
How does the acceleration line on a distance-time graph look?If an object's speed changes, it will either be accelerating or decelerating. On a distance-time graph, this can be represented as a curved line. if an object is speeding up or slowing down.
How would a distance-time graph appear?The distance-time graph is a straight line when a body's motion is uniform. The speed of the body is equal to the slope of the distance-time graph.
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jupiter moon lo orbits the plantet at a distance of 421,700 km. what is the way to write the distance
Answer: 4.217 x 10^5 km
A ball of mass 0.440 kg moving with a speed of 3.70 [m / s] collides head-on with a 0.220 [kg] ball at rest. If the 0.440 [kg] ball moves at 1.23 [m / s] in its original direction, what is the speed of the 0.220 [kg] ball after the collision?
Answer: 3.0 m/s
Explanation:
Conservation of momentum: total momentum before collision = total momentum after collision
momentum = p = mv
(0.440 kg)(3.70 m/s) + (0.220 kg)(0.0 m/s) = (0.440 kg)(1.23 m/s) + (0.220 kg)(x)
Solve for x, speed of the 0.220 kg ball after the collision:
1.628 + 0 = 0.54x
x = 1.628/.54 = 3.0 m/s
What term is used to describe how things behave and is usually expressed in mathematical terms
Answer:
a 'Law'
Explanation:
Newton's laws of motion
Charles' Law etc
The term "law" is used to describe how things behave and is usually expressed in mathematical terms.
What are scientific laws?Scientific laws or laws of science are propositions that describe or forecast a variety of natural occurrences and are based on repeated tests or observations.
All branches of natural science use the word "law" in a variety of contexts (approximate, accurate, broad, or narrow) (physics, chemistry, astronomy, geoscience, biology). All laws are directly or indirectly dependent on empirical facts, and they are developed from data and can be further developed through mathematics.
It is generally accepted that they are discovered rather than invented and implicitly represent causal links that are fundamental to reality even though they do not expressly declare them.
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what’s the moment if there’s a force of 50n and 0.75cm
The moment of the force of 50 N is 0.375 Nm.
What is moment of a force?Moment of a force is the product of force and the perpendicular distance.
To caluclate the moment of the force, we use the formula below.
Formula:
M = Fd.............. Equation 1Where:
M = Moment of the forceF = Force d = DistanceFrom the question,
Given:
F = 50 Nd = 0.75 cm = 0.0075 mSubstitute these values into equation 1
M = 50×0.0075M = 0.375 NmHence, the moment of the force is 0.375 Nm.
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if 20% of the mass of a 50 kg student's body is fat (a typical value), what is the total volume of fat in his body?
The total volume of fat in the body is 22.5L.
Since there are numerous body composition outcomes that could change the body fat percentage in such a way, it is impossible to know for sure.
You could reduce your body fat and lean mass from 18 to 15 percent. However, you could also put on some lean mass during the process and lose less fat as a result to maintain the same percentage.
Alternately, you could put on more lean mass while also gaining fat, which would ultimately bring your body fat percentage down to 15%. Alternatively, one of the fat/lean masses could be maintained constant, and only the other would alter accordingly.
A different weight, but the same percentage, would be assigned to each of those outcomes.
20% of 50 kg= 20 x 50/100=10kg
Density =100
D=M /V
V=M/D
=10/100
=0.1l
Total volume = standard volume + calculated volume
=22.4 +0.1
=22.5L
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light from a helium-neon laser is shined on a slid of width .02 nm. describe qualitatively the pattern of light seen on a screen 1 meter away
A series of smaller spots are spaced out on either side of the pattern's central, larger spot.
What is a helium-neon laser used for?When compared to other gas lasers, helium xenon lasers are inexpensive and straightforward to operate. They have a long history of employment in numerous industries, including holography, biomedical engineering, metrology, spectrometry, optical disc reading, barcode scanning, and microscopy.
How does the helium-neon laser operate?By energizing Neon molecules in the atmosphere, a He-Ne laser produces light. The Neon particles decay from a higher energy state to that of an ordinary state, producing the 632.8 nm optic light that the laser emits. For the given basic research, a comprehensive determination of quantum (state) is not necessary.
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2. A force of 20N stretches a spring by 0.5m. The spring obeys Hooke’s law.
a. Calculate the spring constant including a suitable unit. 1
b. How much force must a man use to stretch it by 1.5m?
a. The spring constant of the spring be 40 N/m.
b. To stretch it by 1.5 m, required force be 60 N.
What is Hooke's law?In accordance with Hooke's law, a principle of elasticity, for relatively minor deformations of an object, the displacement or size of the deformation is directly proportional to the deforming force or load When the load is removed under these circumstances, the object resumes its original size and shape.
According to Hooke's rule, solids behave elastically when their constituent molecules, atoms, or ions move slightly from their normal places. This movement is proportional to the force that caused it.
a. The spring constant of the spring be: k = 20 N/0.5m = 40 N/m.
b. To stretch it by 1.5 m, required force = 40×1.5 N = 60 N.
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Why is the milky way galaxy not expanding together with the rest of the universe?.
Answer:
The reason why the Milky Way is not expanding together with the rest of the universe is because local gravity dominates over the expansion of the universe. (The expansion of the universe is a relatively weak force acting throughout the universe).
Explanation:
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An electric appliance is connected by wires to a 240-volt source of voltage. If the combined resistance of the appliance and wires is 12 ohms, how much current is flowing through the circuit?
Answer:
Below
Explanation:
Basic equation
V = IR
solve for I
V / R = I
240 / 12 = 20 amps