What is Speed? the ability to rest the ability to rest the ability to minimize the time cycle of a given movement the ability to minimize the time cycle of a given movement the ability to apply force the ability to apply force the ability to use oxygen?
Answers
Answer:
Speed is a scalar quantity that refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a short amount of time.
Explanation:
The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time.
Related Questions
Two cars are traveling at the same speed (100 km/hr). They are traveling in opposite directions. Do they have the same velocity? Why?
Answers
Explanation:
well its depends for example one car might be going down the hilll and the other up a hill and there the velocity can change between the cars because of gravity so one can be going faster and the other slower.
the next closest star to the earth, after the sun, is proxima centauri, which is 4.243 light years away. given that 1 light year approximately equals 9.5x1015 meters, how much further away (in meters) is proxima centauri than the sun? remember the earth-sun distance is 1.5x108 kilometers.
Answers
Proxima centauri is 4.06x1016 meters further away from the Earth than the Sun.
Proxima Centauri is the next closest star to the Earth, after the Sun. At a distance of 4.243 light years, it is vastly further away than the Sun, which is 1.5x108 kilometers away.
To calculate the exact distance between Proxima Centauri and the Sun, we need to convert the 4.243 light years into meters.
As 1 light year is approximately 9.5x1015 meters, we can calculate the distance in meters by multiplying 4.243 with 9.5x1015, which gives us a result of 4.06x1016 meters.
This means that Proxima Centauri is 4.06x1016 meters further away from the Earth than the Sun.
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For a specific volume of 0.2 m3/kg, find the quality of steam if the absolute pressure is (a) 40 kPa and (b) 630 kPa. What is the temperature of each case?
Answers
Answer:
\(x=0.0498\)
\(x'=0.659\)
Explanation:
Specific Volume \(V=0.2m_3/kg\)
Absolute Pressure (a) \(P_a= 40kpa\)
Giving
\(T_a=75.87\)
\(v_f=1.265*10^{-3}m^3/kg\)
\(v_g=3.993m^3/kg\)
(b) \(P_a= 630kpa\)
Giving
\(T_b=160.13C\)
\(v_f'=1.10282*10^{-3} m^3/kg\)
\(v_g'=0.30286 m^3/kg\)
(a)
Generally the equation for quality of Steam X is mathematically given by
\(x=\frac{v-v_f}{v_g-v_f}\)
\(x=\frac{0.2-1.0265*10^{-3}}{3.993-1.0265*10^{-3}}\)
\(x=0.0498\)
(b)
Generally the equation for quality of Steam X is mathematically given by
\(x'=\frac{v-v_f'}{v_g'-v_f'}\)
\(x'=\frac{0.2-1.10*10^{-3}}{3.30-1.1*10^{-3}}\)
\(x'=0.659\)
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Answers
Answer:
I think deposition of C is the oldest deposit
the outside diameter or side dimension of the vibrating element must be at least 19 mm but not greater tan 38 mm. true or false
Answers
The outside diameter or side dimension of the vibrating element must be at least 19 mm but not greater than 38 mm is true. A vibration sensor is a system that is used to identify the condition of machinery and prevent it from being harmed. It keeps track of vibrations in the machinery and sends an alert if it exceeds a set threshold.
A sensor that detects vibrations in the environment or within a physical structure is known as a vibration sensor. Vibration sensors are commonly utilized in the maintenance of rotating equipment like pumps, motors, and other machinery to predict failure before it happens.
Based on the vibration being observed, these sensors may detect a range of defects, from unbalance and misalignment to bearing wear and looseness.
The outside diameter or side dimension of the vibrating element must be at least 19 mm but not greater than 38 mm. Hence, the given statement is true. This size range is important for the sensor to be able to pick up on the machinery's small vibrations and changes.
Anything smaller than 19 mm will not detect vibrations with the same precision, and anything larger than 38 mm will be more difficult to install in tight locations.
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Which describes the substances that form covalent bonds? a metal and a metalloid a metal and a nonmetal two nonmetals two metals
Answers
Answer:
Two non metals
Explanation:
Covalent bonding is a chemical bonding that involves sharing of electrons
a metal and a metalloid can be described as a metallic bond.
a metal and a nonmetal is an example that describes an ionic bonding
While two non metals is a typical example of a covalent bonding.
Therefore, two non metals describes the substances that form covalent bonds
Answer:
C
Explanation:
simple answer
Because they have an extended structure, elements that are _
tend to be in the _
state at room temperature.
Answers
Answer:
Metal, middle of the periodic table, solid.
Explanation:
Because they have an extended structure, elements that are metal tend to be in the middle of the periodic table state at room temperature as solid.
Shanika is an engineer at an amusement park who is experimenting with changes to the setup for a magnetic roller coaster ride. In one ride, there are two identical roller coaster cars (orange and green) that start on opposite sides of a large magnet located at the center of a station. Shanika wants to get the largest increase in potential energy she can by moving one car one space to the left or the right.
Shanika can move the orange car to point A or point B, or she can move the green car to point C or point D. Which movement should she make? Why will that movement result in the largest increase in potential energy? Describe the magnetic force that will act on the roller coaster car she moves.
Answers
Answer:
I believe it might be point A since the question ask what will result in the ln a largest increase in potential energy
Explanation:
point A since the question ask what will result in the ln a largest increase in potential energy
What are the types of energy ?The energy can be defined as ability to work or produce action and / or movement and manifests itself in many different ways, such as body movement, heat, electricity, etc.
The different types of energy include Kinetic energy which is associated with the movement of bodies. Potential energy which is stored by virtue of a body's position relative to its surface is also called gravitational potential energy.
Thermal Energy or Heat can be defined as the energy associated with the kinetic energy of the molecules that make up an element, it can be manifested if there is a temperature difference between two bodies.
Chemical energy released or formed from chemical reactions, Solar energy from sunlight. This form of energy is used to generate electricity through photovoltaic plates, for example.
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which weather change usually occurs when the difference between the air temperature and the dewpoint temperature is decreasing
Answers
Answer:
relative humidity increases
Explanation:
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What are the reactants in the photosynthesis chemical equation?
Answers
The photosynthesis chemical equation states that the reactants
(carbon dioxide, water and sunlight), yield two products, glucose and oxygen gas. The single chemical equation represents the overall process of photosynthesis.
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Test
Consider two planets that have the same mass but are very different in size. Which statement describes the gravitational pull
that an object would experience on the surface on each planet? (1 point)
O The object would experience a much greater gravitational pull on the larger planet.
O The object would experience the same gravitational pull on each planet.
O The object would experience only a slightly greater gravitational pull on the larger planet.
O The object would experience a greater gravitational pull on the smaller planet.
Answers
When an object is placed on the surface of two planets that have the same mass but are very different in size, then the the object would experience a greater gravitational pull on the smaller planet.
What is the weight of an object and what is acceleration due to gravity?
Weight of an object:
The force exerted by gravity on a body or an object is known as weight.The formula provides the weight of an object mathematically;W = mg
Where;
The object's mass is m.
Gravitational acceleration, or g, is measured.
Acceleration due to gravity, g:
The acceleration that objects experience due to the combined action of gravity and centrifugal force is known as the Earth's gravity, or g, and it is represented by the Greek letter g.The formula for calculating gravitational acceleration is g = GM/r2.The square of the distance from the planet's core and the acceleration caused by gravity, or g, are inversely proportional. Likewise, if there were two planets with the same mass but different sizes. Take into account the fact that planet A's radius is smaller than planet B's radius. This implies that the planet A's g will be higher than the planet B's g. Since the object's mass is constant, the weight of the object on planet A will be higher than the weight of the object on planet B.
Hence, The object would experience a greater gravitational pull on the smaller planet.
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When something moves, there is more than one __________________ involved
Answers
Answer:
Explanation:
force
How is power defined? question 3 options:
a. the direction of the work b. the total distance c. an object is moved
d. the rate at which work is accomplished
Answers
Answer:
d. the rate at which work is accomplished.
Explanation:
The SI unit for Power is Joules
If you pound a feather with a hammer, which one feels a greater force? a. always the hammer both feather moves, then it felt the greater force. b. therwise the force the same on both. c. always the feather d. The size of the force is always exactly the same on both of them.
Answers
If you pound a feather with a hammer, which one feels a greater force always the hammer both feather moves, then it felt the greater force.
What is the force?
Force is an influence that produces a change in the motion of an object. It is measured in units of mass times acceleration, or newtons (N). Force is a vector quantity, meaning it has both magnitude and direction. Force can cause an object to accelerate, decelerate, remain in motion, change direction, or alter shape. Examples of forces include gravity, friction, tension, and magnetism. Forces can also be generated by electrical, thermal, and nuclear energy. All forces are generated by the interaction of two objects and can be balanced or unbalanced. Unbalanced forces will cause an object to move or accelerate and balanced forces will cause an object to remain stationary or in motion at a constant speed.
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what is the maximum force that you should use when collecting your ir spectra in areas a & c? forces any higher could risk damaging the diamond tip (current repair cost is $7,950).
Answers
The maximum force that you should use when collecting your IR spectra in areas A & C is 55 Newtons.
IR spectroscopy is a technique used to identify and study the chemical properties of a substance by analyzing its interaction with infrared radiation. To collect an IR spectrum, a diamond tip is used to press a sample against a crystal surface, which generates the infrared signal. However, applying too much force can damage the diamond tip, which can be expensive to repair. In this case, the maximum force that should be used is 55 Newtons. It is important to follow the instructions carefully when using an IR spectrophotometer to ensure accurate and reliable results, and to avoid damaging the equipment.
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total question:
What is the maximum force that you should use when collecting your IR spectra in areas A& C? Forces any higher could risk damaging the diamond tip (current repair cost is $7,950). You can find instructions for using the IR spectrophotometer in the IR Spectroscopy page in the Important Resources module. 30 Newtons 55 Newtons 90 Newtons 115 Newtons 130 Newtons.
What label should mateo place in the marked cell? uses electrical energy provides electrical energy measures electric current controls electric current
Answers
The product label which Mateo should place in the marked cell is that it: B. provides electrical energy.
What is a product label?A product label refers to a paper-document which contains information about the chemical elements, nutrients, and other compounds that are present in a product and its function.
In this scenario, the product label which Mateo should place in the marked cell is that this product was designed and developed to provide electrical energy, based on the electrical symbol for battery shown in the image attached below.
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In which situation would a space probe most likely experience centripetal acceleration?
as it revolves around a planet
as it flies straight past a moon
as it is pulled in a line toward the Sun
as it lifts off from Earth
Answers
Answer:
As it revolves around a planet
Explanation:
Earth has a gravitational force right. Well, they have different types of forces as well including centripetal force. Centripetal acceleration will be experienced by an object or a space probe when it is in a circular motion. This happens when a dark mater revolves around another darkmater in this case earth.
Answer:
The correct answer is A. :)
Explanation:
Edge 2021
How has technology changed farming?
Answers
pooja needs 15 kg of water at 38 degree Celsius to take a bath, but her water is only at 20 degree Celsius. calculate the minimum amount of heat energy she requires to heat the water to the required temperature.
Answers
Answer:
Q = 1128.6 [kW] - kilowatts
Explanation:
To calculate the amount of energy required, the following expression should be used:
\(Q=m*c_{p}*(T_{f} - T_{i}) \\where:\\C_{p}=specific water heat = 4.18 [\frac{kJ}{kg*K}] \\m = mass = 15 [kg]\\T_{f}= Final temperature = 38 [C]\\T_{i}=20[C]\)
Q = 15*4.18*(38-20)
Q = 1128.6 [kW]
1- an object is thrown down at 6m/s from the top of a 24m tall building. determine the time it takes the object to reach the ground. remember that it is important that it is grown down.
2- an object is thrown upwards at 20m/s from the ground. what are the 2 times that it reaches 8m?
Answers
(1) the time for the object to reach the ground is 1.68 s.
(2) The two times that the object reaches 8m is 3.63 s and 0.45 s
The given parameters;
initial velocity of the object, u = 6 m/sheight of the building, h = 24 m(1) The time taken for the object to reach the ground is calculated as;
\(h = ut + \frac{1}{2} gt^2\\\\24 = 6t + 0.5\times 9.8t^2\\\\24= 6t + 4.9t^2\\\\4.9t^2 + 6t - 24 =0\\\\solve\ the \ quadratic \ equation \ using \ formula \ method;\\\\a = 4.9, \ b = 6, \ c = -24\\\\t = \frac{-b + /- \ \ \sqrt{b^2-4ac} }{2a} \\\\t = \frac{-6 + /- \ \ \sqrt{(6)^2-4(4.9\times -24)} }{2(4.9)} \\\\t = 1.68 \ s\)
Thus, the time for the object to reach the ground is 1.68 s.
(2)
The given parameters;
initial velocity of the object, u = 20 m/sheight of the building, h = 8 mThe two times that the object reaches 8m is calculated as;
\(h = ut - \frac{1}{2} gt^2\\\\8 = 20t - 0.5\times 9.8t^2\\\\8 = 20t - 4.9t^2\\\\4.9t^2 -20t+ 8 = 0\\\\\)
\(solve\ the \ quadratic \ equation \ using \ formula \ method;\\\\a = 4.9, \ b = -20, \ c = 8\\\\t = \frac{-b + /- \ \ \sqrt{b^2-4ac} }{2a} \\\\t = \frac{-(-20)\ + /- \ \ \sqrt{(-20)^2-4(4.9\times 8)} }{2(4.9)} \\\\t = 3.63 \ s \ \ or \ 0.45 \ s\)
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Which actions most likely cause the domains in a ferromagnetic material to align? Check all that apply. heating the material rubbing the material against a magnet passing electricity around the material placing the material in a magnetic field of opposite polarity placing the material near a strong magnet hitting the material
Answers
Answer:
i. rubbing the material against a magnet
ii. placing the material in a magnetic field of opposite polarity
iii. placing the material near a strong magnet
Explanation:
Ferromagnetic materials are majorly metals which can be easily attracted by a magnet. ferromagnetic materials are made up of domains, behaves as minute pieces of magnet. They can be rearranged to align when under the influence of an external magnetic field.
The alignment of the domains in a ferromagnetic material can be caused by either of the following: rubbing the material against a magnet, placing the material in a magnetic field of opposite polarity, placing the material near a strong magnet.
Answer:
B, D, E
Explanation:
edg2020
An adult inhales about 6.0×10^−4 m^3 of fresh air during a breath. only 20% of fresh air is oxygen. assume the pressure in the lungs is 1.0×10^5 pa and the air is at a temperature of 300 k. How many oxygen molecules are in each breath?
Answers
Number of oxygen molecules in each breath is 2.9X10^21
Given that the volume of air inside a breath (V) = 6.0×10^−4 m^3
oxygen in fresh air = 20%
volume of oxygen in fresh air = 20/100 x 6.0×10^−4 = 1.2x10-4m^3
pressure in the lungs (P)= 1.0×10^5 pa
Temperature of air (T) =300K
Using ideal gas equation find the number of moles of oxygen
PV = nRT
Then n = 1.0×10^5 x 1.2x10-4 / 8.314 x 300 = 4.8x10-3mol
We know the number of molecules in 1 mol is 6.023x10^23
Then the number of molecules in 4.8x10-3mol of oxygen is =
4.8x10-3molx 6.023x10^23 = 2.9x10^21
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what evidence supports the model of jupiter's galilean satellites forming in a mini accretion disk around jupiter?
Answers
The mass trend that among four moons is highest close to Jupiter and decreases with distance, with the inner circular members of this group being slightly lesser than the two end moons.
What are the uses of satellites?There are several satellites in operation. They are used for a number of purposes, including as the weather forecasting, amateur radio, television broadcasting, and the Global Positioning System. They use telescopes to look out at the planetary system in order to do research and collect data.
How many satellites currently exist in orbit?According to UNOOSA statistics from the Concerned Scientists, there are 8,261 satellites orbiting Earth as of December 2022, although only 4,852 among them are currently in use.
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Describe the energy changes in a mass-spring system that is oscillating horizontally. Explain how this changes if the system is vibrating vertically.
Answers
In a mass-spring system, the energy changes between potential energy and kinetic energy as the mass oscillates back and forth.
What is mass-spring system?Simply said, a spring-mass system is a spring system with a block hung or fastened to the free end of the spring.
The spring is stretched or compressed to its fullest extent, and the mass has the most potential energy, when the mass is at its maximum displacement from equilibrium position (either to the left or right for horizontal oscillations or up or down for vertical oscillations). The mass has no kinetic energy at this time since its velocity is zero.
As a mass-spring system oscillates horizontally or vertically, potential energy is transformed into kinetic energy when the mass swings back and forth.
Thus, this way, this changes if the system is vibrating vertically.
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Which statement describes an example of destructive interference?
A. Light shining on a surface has gaps after passing through two slits.
B. Light shining on a DVD surface produces different colors.
C. The inside of a seashell appears to be many different colors.
D. A lamp lights an area around a corner.
It's A
Answers
Answer:
A
Explanation: Just did the test:)
d) Why is it so difficult to get accurate data for these objects?
Answers
Answer: For what objects? And what data?
Explanation:
A 0. 2 kg cart is released from rest at the top of a frictionless ramp with a height of 1. 4 meters. State the initial type of energy in the cart-Earth system when the cart is released at the top of the ramp
Answers
When the cart is released at the top of the ramp, the initial energy of the cart-earth system is potential energy.
The initial energy of the cart-earth system is potential energy.Potential energy is the energy possessed by an object due to its position or state, which enables it to do work when it is transformed to another form of energy such as kinetic energy. It is usually expressed in joules (J).For instance, a 0.2 kg cart placed on the top of a frictionless ramp with a height of 1.4 meters will have potential energy due to its position. The potential energy formula is PE=mgh, where m is mass, g is gravity, and h is height. Thus, using the formula, the potential energy of the cart-earth system can be calculated as:PE=mgh=0.2 kg * 9.8 m/s² * 1.4 m=2.76 J .The potential energy will be converted to kinetic energy as the cart moves down the ramp. The final velocity of the cart at the bottom of the ramp can be calculated using the conservation of energy equation:PE = KEmgΔh = ½mv²v = sqrt (2gh)v = sqrt (2(9.8 m/s²)(1.4 m))v = 3.76 m/s .Therefore, when the cart is released at the top of the ramp, the initial energy of the cart-earth system is potential energy.
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When 560,000 is written in scientific notation, what is the power of 10?
Answers
Answer: 10^5
Explanation:
Why does it take more time for a larger sample of water to freeze?
Answers
Answer:The greater the amount of water that there is it will take longer for the water to freeze because more heat has to be dissipated into the environment
Explanation:
Answer:
The greater the mass of water, the more heat has to be dissipated into the environment and the longer it will take to freeze. The greater the surface area of the water, the faster the water will lose its heat and freeze.
the energy transfer that takes place by direct contact is called ____
Answers
Answer:
Conduction
Explanation:
The transfer of energy through matter by direct contact of particles is called. Conduction.
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