The way that light refracts is the same as how a wave would refract. The way that light diffracts is the same as how a wave would. Similar to how interference occurs in waves, it also occurs in light.
What evidence does light's diffraction provide that it behaves like a wave?Light will shift directions as it travels from one medium, like the air, to another, like the ocean. Light behaves in a similar manner to other waves, like sound waves.
How does the phenomenon of diffraction affect how light behaves as a wave?The bending and spreading of waves around a barrier is known as diffraction. Because you can bend and block out specific light waves, it has to do with how light behaves as a wave.
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DESPERATE HELP. 80 POINTS. PLEASE PHYSICS
A circuit is built based on this circuit diagram. A diagram of a closed circuit with a power source on the left labeled 12 V. There are 3 resistors in parallel, separate paths, connected to it labeled 3.0 Ohms, 6.0 Ohms and 9.0 Ohms. What is the equivalent resistance of the circuit? 0.61 Ω 1.6 Ω 7.5 Ω 18 Ω
The parallel circuit containing three resistors' equivalent resistance is thus found to be 1.64 ohms.
To what end are ohms put?The electrical resistance measured in Ohms is a measure of a conductor's ability to create a current of one amp when a voltage of one volt is applied across its terminals.
What does ohm mean?Ohm defines the "1 Ohm" measure of resistance as the distance between two places in a wire where 1 volt would push 1 amp, or 6.241 1018 electrons, when applied. Greek letter "," sometimes known as omega and pronounced "ohm," is typically used to denote this value in schematics.
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Answer:
B or 1.6
Explanation:
Match the terms with their definitions. (4 points)
1.
Absolute zero
2.
Heat
3.
Temperature
4.
Latent heat
a.
Energy transferred from one object to another due to a temperature difference
b.
The degree of hotness or coldness of a body or environment
c.
The temperature at which a substance has no kinetic energy per particle to give up
d.
The energy released or absorbed by a substance during a change of state
The correct matches of the terms are Absolute zero represents the absence of thermal energy, heat is the transfer of energy, temperature measures the intensity of heat, and latent heat is involved in phase changes.
1. Absolute zero is the temperature at which a substance has no kinetic energy per particle to give up. Absolute zero is the lowest possible temperature, at which all molecular motion ceases.
2. Heat is the energy transferred from one object to another due to a temperature difference. Heat is the transfer of thermal energy from a hotter object to a colder object.
3. Temperature is the degree of hotness or coldness of a body or environment. Temperature measures the average kinetic energy of the particles in a substance, indicating how hot or cold it is.
4. Latent heat is the energy released or absorbed by a substance during a change of state. Latent heat is the heat energy absorbed or released when a substance undergoes a change of state, such as melting, vaporization, or condensation, while the temperature remains constant.
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A recycling center has a 0.125 m° box filled with one type of plastic. The full box has a mass of 120 kilograms. What is the density of the plastic? What type of plastic is in the box? JUSTIFY your answer.
The density of the plastic found inside the box would be = 960kg/m³
How to calculate the density of the box?The volume of the box at the recycling center= 0.125m³
The mass of the full box = 120kg
The formula use to calculate the density of the plastic = mass/volume.
That is ; Density = mass /volume = kg/m³
Density = 120/0.125
= 960kg/m³
The type of plastic that is in the box is LDPE (low density polyethylene). This is because the density calculate fell within the range of 940–960 kg/m3.
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Complete question:
A recycling center has a 0.125 m³ box filled with one type of plastic. The full box has a mass of 120 kilograms. What is the density of the plastic? What type of plastic is in the box? JUSTIFY your answer.
A spaceship traveling at 0. 5 relative to Earth is 45 m long as measured by its crew. How long is the spaceship as measured by the mission control in Texas?
The spaceship appears to be 38.97 meters long as measured by the mission control in Texas.
This is a problem involving length contraction, which is a consequence of Einstein's theory of special relativity. According to special relativity, an object in motion appears to be shorter in the direction of motion as measured by an observer at rest relative to the object.
The formula for length contraction is:
L' = L / γ
γ is the Lorentz factor, given by:
γ = 1 / sqrt(1 - v^2/c^2)
In this problem, the spaceship is traveling at a velocity of 0.5c relative to Earth. Therefore, the Lorentz factor is:
γ = 1 / sqrt(1 - (0.5c)^2/c^2) = 1 / sqrt(1 - 0.25) = 1.1547
The proper length of the spaceship is 45 m, as measured by the crew on the spaceship. Therefore, the observed length of the spaceship, as measured by mission control in Texas, is:
L' = L / γ = 45 m / 1.1547 = 38.97 m (rounded to two decimal places)
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Please help me I need help on this and it's due tomorrow
Answer:
the future of c DC and hi to mere ko pahchani pahchani pahchani pahchani pahchani pahchani pahchani pahchani pahchani the future of c DC and hi
Explanation:
v I will be in the future of c DC and hi to everyone who has a few days ago I will be in the future of c DC and hi to everyone and their children of God I will be in the future of c DC and hi to everyone who has a few days ago I will be in the future of c DC and their families of the attached document and their families will get back from try to the the future can vsnydb behind f
A radio-controlled plane has a measured air velocity of 3.0 m/s [E]. If the plane drifts off course due to
a light wind with velocity 1.75 m/s [25° W of S], find the velocity of the plane relative to the ground. If
the distance travelled by the plane was 3.2 km, find the time it took the plane to travel that distance.
According to the question it took the plane 675 seconds (11 minutes and 15 seconds) to travel 3.2 km.
What is travel?Travel is the act of moving from one place to another, either for leisure or business purposes. It is often associated with exploration and discovery, as well as the opportunity to experience new cultures, cuisines, and landscapes.
The velocity of the plane relative to the ground is the vector sum of the air velocity (3.0 m/s [E]) and the wind velocity (1.75 m/s [25° W of S]).
The vector sum can be calculated using the Law of Cosines and the Law of Sines.
Using the Law of Cosines, we can calculate the magnitude of the vector sum:
|v| = √(3.0 m/s)2 + (1.75 m/s)2 - 2(3.0 m/s)(1.75 m/s)cos(25°)
|v| = 4.73 m/s
Using the Law of Sines, we can calculate the angle of the vector sum:
sin(θ) = (1.75 m/s)sin(25°) / 4.73 m/s
θ = 20.9°
Therefore, the velocity of the plane relative to the ground is 4.73 m/s [20.9° W of S].
To find the time it took the plane to travel 3.2 km, we can use the equation:
t = d / v
where t is the time in seconds, d is the distance in meters, and v is the velocity in m/s.
t = 3200 m / 4.73 m/s
t = 675 s
Therefore, it took the plane 675 seconds (11 minutes and 15 seconds) to travel 3.2 km.
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Make up your own average speed question and provide the answer
For instance, someone travelling at an average speed of 40 miles divided by 40 minutes, or 1 mile per minute, is travelling 20 miles north and then 20 miles south (60 mph).
What is the typical speed?Calculating average speed involves dividing the whole distance travelled by the total time it took to cover that distance. Speed is the rate of movement of something at a specific time. Average speed refers to the average speed during the course of a journey.
What does the speed formula mean?Speed equals distance x time is the speed equation. The meter per second, abbreviated as m/s or ms-1, is the SI unit of speed.
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Any change in SPEED or DIRECTION is referred to as _____
Answer:
Acceleration
Explanation:
I just know trust me I have this answer (sorry if I out ice) and I got it right
Answer: I would say the answer to this question is Acceleration
Explanation:
What is the wave speed of a wave that has a frequency of 500Hz and a wavelength of 0.40m?
A 53. 0 kg stunt pilot who has been diving her airplane vertically pulls out of the dive by changing her course to a circle in a vertical plane. What is the apparent weight of the pilot at the lowest point of the pullout?
The apparent weight of the pilot at the lowest point of the pullout 1040 N.
The centripetal force, F = mv²/r, where m is the mass of the pilot, v is her speed, and r is the radius of the circle. At the lowest point of the pullout, the radius of the circle is equal to the distance from the center of the circle to the point where the plane changes direction (i.e., the height above the ground).
Since the plane is diving vertically, the initial speed is, v₀ = √(2gh), where h is the initial height of the plane above the ground, and g is the acceleration due to gravity. At the lowest point of the pullout, all of the potential energy that the plane had at the start of the dive is converted into kinetic energy. Therefore, the speed, v = √(2gh).
Substituting the expressions for v and r into the expression for the centripetal force,
F = m * (2gh) / (2h) = mg
Therefore, the apparent weight of the pilot at the lowest point of the pullout is twice her actual weight,
2 * (53.0 kg * 9.81 m/s²) = 1040 N
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An Atwood's machine consists of two masses, m and M2, which are connected by a massless inelastic cord that passes over a pulley, Fig. 8-47. If the pulley has radius R and moment of inertia I about its axle, determine the acceleration of the masses mi and m2, and compare to the situation in which the moment of inertia of the pulley is ignored. [Hint: The tensions Fri and Fm are not
Fr
equal. We discussed this situation in Example 4-13, assuming
I = 0 for the
The expression for the acceleration is the same in both cases, indicating that the moment of inertia of the pulley does not affect the acceleration of the masses.
An Atwood's machine consists of two masses connected by a rope that passes over a pulley. The acceleration of the masses can be found by applying Newton's second law to each mass separately. The force due to gravity and the tension in the rope are the only forces acting on the masses.
If we consider the moment of inertia of the pulley, the acceleration can be found using the net forces on each mass. However, if we ignore the moment of inertia of the pulley, the acceleration can be found using the net force on the system. However, the expression for the acceleration is the same in both cases, meaning that the moment of inertia of the pulley does not affect the acceleration of the masses.
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Car a has a forward speed of 5 m/s and is accelerating at 2. 5 m/s2. Determine the velocity and acceleration of the car relative to observer b, who is riding the ferris wheel and has a constant speed of 3 m/s
Car A has a velocity of 8 m/s and an acceleration of 2.5 m/s2 relative to observer B, who is riding the ferris wheel and has a constant speed of 3 m/s.
Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time Velocity defines the direction of the movement of the body or the object. Speed is primarily a scalar quantity. Velocity is essentially a vector quantity. It is the rate of change of distance. It is the rate of change of displacement. It can be calculated by obtaining the ratio of displacement and the total time taken. velocity is expressed in metres/second or m/s. The SI unit of velocity is metre per second (m/s).
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On August 21, 2017, the United States experienced the first coast to coast solar eclipse since 1918. How were the sun, moon, and Earth arranged during this eclipse?
The biggest celestial event of the decade will likely take place on August 21 when a total solar eclipse crosses the whole continental United States from coast to coast.
Arrangement This is the first time since 1918 that the US visit will experience a total solar eclipse, which is brought on by the Moon moving in front of the Sun. In order to see the Sun's disc totally covered by the Moon, people are swarming to the cities that are closest to the eclipse's path. Even if you're not in the path, the US will still put on a spectacular show since on August 21, the majority of the Sun will be hidden in clouds in every state in the lower.For more information on solar eclipse kindly visit to
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A resistor is essentially a poor conductor of electricity. When you send current through a resistor, that current always experiences a voltage drop, never a voltage rise. One way to understand this effect is that(A) more current leaves a resistor than enters it, so the voltage must go down to compensate. (B) it's easy to turn electric energy into thermal energy but not the other way around. (C) less current leaves a resistor than enters it, so the voltage must go down as well. (D) current can only flow forward through a resistor, never backward
(C) Less current leaves a resistor than enters it, so the voltage must go down as well.
Materials that are poor conductors of electricity are called insulators. Wood, glass, plastics, and non-metal elements made of hydrocarbon polymers are among the examples. As electricity cannot pass through these materials.A poor conductor is a material for which conductivity is low, yet sufficient to exhibit significant loss. To be clear, the loss we refer to here is the conversion of the electric field to current through Ohm's law. The threshold of significance depends on the application.Conductors conduct electrical current very easily because of their free electrons. Insulators oppose electrical current and make poor conductors.
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if 1 cubic centimeter of water has a mass of 1 gram then a liter of water has a mass of _ gram(s)
Imagine two equally charged objects that are hanging a certain distance from one another. How does the force between them change if the distance between them triples?
The force is 1/9 as great
The force becomes 9x's greater
The force becomes 3x's greater
The force is 1/3 as great
Answer The force is multiplied times 9
Explanation:
A 0.14-kilogram baseball is thrown in a straight line at a velocity of 30 m/sec. What is the momentum of the baseball?
The momentum of the baseball will be "4.20 kg.m/s".
Given values are:
Mass,
m = 0.14 kgVelocity,
v = 30 m/sAs we know the formula,
→ [tex]Momentum=Mass*Velocity[/tex]
or,
→ [tex]P=mv[/tex]
By substituting the given values, we get
→ [tex]=0.14*30[/tex]
→ [tex]=4.20[/tex] [tex]kg.m/s[/tex]
Thus the above answer is correct.
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help pls Cuban tree frogs are skilled jumpers. They can launch themselves at 4.5 meters per second at an angle of 26 above horizontal. Assuming the frog is jumping on level ground, what is the frog’s hang time in the air during a single jump?
a.0.92 s
b.1.2 s
c.0.77 s
d.0.40 s
To solve this problem, we need to use the kinematic equations of motion to determine the hang time of the Cuban tree frog during a single jump.
What is Velocity?
It is defined as the displacement of an object per unit time in a particular direction.
In other words, velocity is the speed of an object in a given direction. It is a vector quantity because it has both magnitude (the speed) and direction.
First, we need to find the vertical component of the initial velocity vector (v0) using the sine function:
sin(26°) = vy / 4.5 m/s
vy = 4.5 m/s sin(26°) = 1.98 m/s
The vertical component of the velocity vector determines how high the frog will jump.
Next, we can use the following kinematic equation to solve for the hang time (t) of the frog:
Δy = v0yt - 1/2 gt^2
where Δy is the vertical displacement (i.e., how high the frog jumps), v0y is the vertical component of the initial velocity vector, g is the acceleration due to gravity (9.8 m/s^2), and t is the hang time.
Since the frog jumps on level ground, its vertical displacement is zero (i.e., it returns to its original height). Therefore, we can simplify the equation as follows:
0 = v0yt - 1/2 gt^2
t(1/2 g t - v0y) = 0
t = 0 or t = 2v0y / g
We can discard the solution t = 0 because it is not physically meaningful. Therefore, the hang time of the Cuban tree frog during a single jump is:
t = 2v0y / g = 2(1.98 m/s) / 9.8 m/s^2 = 0.40 s
Therefore, the answer is (d) 0.40 s.
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does it take more or less force for something to slide across a surface then it does to change direction on the same surface
It take more force for something to slide across a surface then it does to change direction on the same surface
What does the word force mean?
The definition of force in physics is: The push or draw on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a trajectory and a magnitude.
Friction is the energy that opposes motion, slowing or stopping it entirely. When two things rub against one another, friction is created. Sliding friction is the resistance that any two things produce when they slide against one another. This friction, also referred to as kinetic friction, is the force required to maintain one surface moving along another.
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a track of mass 2000kg travelling at 12m/s has it initial speed reduces ti 6m/s a constant breaking force over a distance of 40m.what is the breaking force?
The breaking force, given that the truck reduces it speed from 12 m/s to 6 m/s over a distance of 40 m is -2700 N
How do i determine the breaking force?We'll begin by obtaining the deceleration of the truck. Details below:
Initial velocity (u) = 12 m/sFinal velocity (v) = 6 m/s Distance (s) = 40 mDeceleration(a) =?v² = u² + 2as
6² = 12² + (2 × a × 40)
36 = 144 + 80a
Collect like terms
36 - 144 = 80a
-108 = 80
Divide both side by 80
a = -108 / 80
a = -1.35 m/s²
Finally, we shall determine the breaking force. Details below:
Mass (m) = 2000 KgDeceleration (a) = -1.35 m/s²Breaking force (F) =?Force = mass × deceleration
Breaking force = 2000 × -1.35
Breaking force = -2700 N
Thus, the breaking force is -2700 N
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1) Electrical conductivity (EC) measures the amount of ions in the water; we think of it as the amount of minerals in solution, either calcium, potassium, nitrogen, etc. Over time, has the EC increased or decreased significantly (more than 100 S/cm)? (0.5pt) If so, propose why that may have happened. (0.5pt)
2) Ammonia (NH4) is a waste product of fish. Over time, has NH4 increased or decreased significantly (by 0.25 or greater)? (0.5pt) If so, propose why that may have happened. (0.5pt).
3) Nitrite (NO2-) is a form of nitrogen produced by nitrifying bacteria. Over time, has NO2- increased or decreased significantly (by 5 or greater)? (0.5pt) If so, propose why that may have happened. (0.5pt).
4) Nitrate (NO3-) is a form of nitrogen produced by nitrifying bacteria and is food for plants. Over time, has NO3- increased or decreased significantly (by 10 or greater)? (0.5pt) If so, propose why that may have happened. (0.5pt).
The capacity of water to transmit electrical current is determined by its conductivity. The quantity of electrical ions in the water has a direct impact on this ability
What is called electrical conductivity?A material's electrical resistivity, also known as particular electrical resistance or volume resistivity, determines how effectively it opposes electric current. For example, pure water has a high electrical resistivity and is an insulator. A substance that easily permits electric current has a low resistivity. Greek character is often used to denote resistance (rho). The ohm-meter (m) is the SI measure of electrical impedance.
For instance, if the resistance between the sheet contacts on two opposing sides of a solid material square measuring 1 m3 is 1, the material has a resistivity of 1 m.
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A 2 kg cue ball is moving at a velocity of 2 m/s when it collides with another 3 kg billiard ball at rest.
What is the total momentum of the system?
A 2 kg cue ball is moving at a velocity of 2 m/s when it collides with another 3 kg billiard ball at rest. The total momentum is 4 kg m/ s.
Elaborating the problem:
Before the collision, the momentum of the 2 kg cue ball is:
p₁ = m₁ × v₁
p₁ = 4 kg m/s
The 3 kg billiard ball is at rest, so its momentum is: p₂ = 0 kg m/s
The total momentum of the system before the collision is:
p_total = p₁ + p₂
p_total = 4 kg m/s
The total momentum of the system after the collision is:
p_total = M × [tex]V_{f}[/tex]
p_total = p₁ + p₂
M × [tex]V_{f}[/tex] = p₁ + p₂
5 kg × [tex]V_{f}[/tex] = 4 kg m/s + 0 kg m/s
5 kg * [tex]V_{f}[/tex] = 4 kg m/s
Therefore, [tex]V_{f}[/tex] = 0.8 m/s
So, the total momentum of the system is:
p_total = M × [tex]V_{f}[/tex]
p_total = 5 kg × 0.8 m/s
p_total = 4 kg m/s
What is any system's total momentum?
A system's total momentum is the sum of the momentum of all its components. To put it another way, it is the total amount of motion experienced by the system's objects. The total momentum of an isolated system remains constant when there are no external forces acting on it, as stated by the law of conservation of momentum.
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If natural gas were to be our primary way for generating electricity, what effect would this have on individuals and the environment?
If natural gas were to be our primary way for generating electricity, it would have both positive and negative effects on individuals and the environment.
One of the positive effects is that natural gas is a cleaner-burning fossil fuel compared to coal and oil. It emits less greenhouse gases and pollutants, which can result in improved air quality and human health benefits. Additionally, natural gas is abundant and domestically produced, which can lead to greater energy independence and reduced reliance on foreign oil.
However, there are also negative effects of using natural gas as the primary source of electricity. One of the biggest concerns is the environmental impact of hydraulic fracturing or fracking, which is a common method of extracting natural gas from the ground. Fracking can lead to water contamination, air pollution, and other environmental risks. Additionally, natural gas is still a fossil fuel, which means that it is a non-renewable resource and will eventually run out.
Furthermore, relying on natural gas for electricity generation can also have negative impacts on individuals in terms of energy costs. While natural gas prices have been relatively low in recent years, they can still be subject to price fluctuations, which can result in higher energy bills for consumers. Additionally, natural gas pipelines and infrastructure can be prone to leaks and explosions, which can pose safety risks for nearby communities.
In conclusion, while natural gas can offer some benefits as a primary way for generating electricity, it is important to weigh the potential negative effects on individuals and the environment. Alternative sources of energy such as renewable resources should also be considered to promote a more sustainable and environmentally-friendly energy future.
A roller coaster car that has a mass of 200 kg is travelling at a rate of 10 m/s at a
height of 5 m above Earth's surface. How much total energy does the car contain at
this point?
The roller coaster car contains a total of 19810 joules of energy at this point.
How to calculate the total energy of the roller coaster car.First, we need to consider its kinetic energy and potential energy.
The potential energy of the car at a height of 5 m above Earth's surface is given by:
PE = m * g * h
Where
m is the mass of the carg is the acceleration due to gravity (9.81 m/s²)h is the heightSubstituting the given values, we get:
PE = (200 kg) * (9.81 m/s²) * (5 m)
PE = 9810 J
The kinetic energy of the car is given by:
KE = (1/2) * m * v²
Where v is the velocity of the car.
Substituting the given values, we get:
KE = (1/2) * (200 kg) * (10 m/s)²
KE = 10000 J
Therefore, the total energy of the roller coaster car at this point is:
Total Energy = KE + PE
Total Energy = 10000 J + 9810 J
Total Energy = 19810 J
Therefore, the roller coaster car contains a total of 19810 joules of energy at this point.
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Question 10 of 25
You replace a 200 W lamp with a more efficient 55 W LED lamp. If you leave
your lights on 24 hours a day, how much energy are you saving each day by
replacing this bulb?
A. 4,752,000 J
OB. 17,280,000 J
C. 12,528,000 J
O D. 21,225,000 J
SUBMIT
The energy used by the 200 W lamp for 24 hours is 17280000 J whereas, the energy used by the 55 W lamp for one day is 4752000. Therefore, by replacing the200 W lamp by 55 W, we save 12,528,000 J of energy.
What is power ?Power is the unit of energy or work done by an object. It measures how much energy used by the object per second to do a work. Hence, power is the work done or energy by time in seconds.
Given that power of one lamp = 200 W
time = 24 hour= 86400 s.
then energy = power × time
200 W × 86400 s = 17280000 J
Similarly the energy consumed by the 55 W lamp for 24 hours is:
86400 s × 55 W = 4752000J
Then, if replace the 200 W lamp by the 55 W LED lamp, we can save an energy of 17280000 J - 4752000 J = 12,528,000 J.
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The table below is missing its headings. Based upon the descriptions provided, what should "Column B be renamed?
Column A
Column B
Transverse
Transverse or Longitudinal
Does not require a medium to travel. Requires a medium to travel.
Includes visible light
Includes sound.
O Transverse Waves
O Mechanical Waves
O Electromagnetic Waves
O Longitudinal Waves
Column B should be renamed as Mechanical waves.
What are the differences between transverse and longitudinal waves ?Transverse waves require medium to travel while longitudinal waves doesn't require a medium.
Transverse waves can be polarized while longitudinal waves cannot be polarized.
Transverse waves consists of crests and troughs while longitudinal waves consists of compressions and rarefactions.
Here,
In column B include waves that could be both transverse and longitudinal and requires a medium to travel and also it includes sound. So these are the properties of mechanical waves.
Hence,
Column B should be renamed as Mechanical waves.
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Sound waves are emitted from the surface of the ocean and travel through the water at 1490 m/s, with a wavelength of 15m. The bottom of the ocean is 1630 m below the surface. Determine the frequency of the sound waves as they travel to the bottom of the ocean.
Sound waves are emitted from the surface of the ocean and travel through the water at 1490 m/s, with a wavelength of 15m. The frequency of the sound waves as they travel to the bottom of the ocean is 99.33Hz.
What are sound waves?The pattern of disruption brought on by energy moving away from the sound source is known as a sound wave. Longitudinal waves are those produced by sound. This indicates that the direction of energy wave propagation and the particle vibrational propagation are parallel. The atoms oscillate when they are put into vibration. A high-pressure and a low-pressure zone are created in the medium as a result of this constant back and forth action. Compressions and rarefactions, respectively, are terms used to describe these high- and low-pressure zones. The sound waves go from one medium to another as a result of these regions being transmitted to the surrounding media.
Using the formula:
v = n×λ
where,
v is the velocity of sound wave and,
λ is the wavelength.
Substituting the values and solving for frequency:
n = 99.33Hz
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A 700 N (70 kg) skydiver falls towards the Earth. If the force due to air
resistance is 322 N, what is the acceleration of the skydiver?
Label your answer as m/s/s and use +/- to show direction.
The acceleration of the skydiver is approximately +5.4 m/s².
What is the acceleration?We can use Newton's second law of motion, which states that the net force acting on an object is equal to its mass times its acceleration:
Net force = mass x acceleration
In this case, the net force is the force due to gravity minus the force due to air resistance:
Net force = force due to gravity - force due to air resistance
So we have:
(700 N) - (322 N) = (70 kg) x acceleration
Simplifying this equation, we get:
378 N = (70 kg) x acceleration
To find the acceleration, we can divide both sides by the mass:
acceleration = 378 N / (70 kg)
acceleration = 5.4 m/s²
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What is the period of the microwaves with a frequency of 30,000,000,000 Hz?
a.cannot be calculated
b.0
c.a really big number
d.a really small number
Answer:
The period of a wave is the time it takes for one complete cycle of the wave to occur. It is given by the formula:
Period = 1 / Frequency
where frequency is the number of cycles per second.
Using this formula, we can calculate the period of the microwaves with a frequency of 30,000,000,000 Hz as:
Period = 1 / 30,000,000,000 Hz
Period = 3.33 x 10^-11 seconds
Therefore, the period of the microwaves with a frequency of 30,000,000,000 Hz is a really small number, which is approximately 3.33 x 10^-11 seconds. The answer is (d) a really small number.
Explanation:
