Answers
The precision of any measurement made using this scale would be to the nearest 0.01.
Why is a weighing scale important?A weighing scale is important because it allows us to accurately measure the weight of an object or a person. This information is always useful in many different fields, such as in cooking, science, medicine, and industry.
The scale shown below has two decimal places, which means the smallest unit of measurement it can display is 0.01. As a result, any measurement made with this scale would be accurate to the nearest 0.01.
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Related Questions
Why is copper particularly useful in electrical circuits?
a very good conductor of heat
support burning
very reactive metal
Answers
III. Directions: Write TRUE if the statement is correct if FALSE change the incorrect underline word. Write your answers on a separate answer sheet of paper. 1. The night- vision goggles make use of microwave. 2. Infrared remote controls are used in TV, video, cassette recorders and other electronic appliances. 3. Radio waves are used in in communication devices, car locking system and computers. 4. Microwaves are reflected in many directions by the fan and the walls of the microwave oven during baking of or cooking of food. 5. Radio waves scanners are used to show the temperature variation of the body. This can be used for medical diagnosis.
Answers
infrared
true
infrared
true
infrared
what is the answer? I need help.
Answers
Answer:
moving water
Explanation:
its called hydropower its a form of renewable energy that uses moving water
A 1.3 KG object is at rest and 8.00 N Force to the right Acts on the object during a time interval of 2.7 seconds what is the velocity of the object at the end of this time interva
Answers
The velocity of the object at the end of the 2.7 second time interval is approximately 16.714512 m/s to the right.
What does velocity of the object mean?Velocity is a vector quantity that describes the rate of change of an object's position. It is defined as the change in displacement (distance traveled in a particular direction) per unit time.It's important to note that velocity is different from speed, which is a scalar quantity that only describes the magnitude of an object's motion, regardless of direction. An object's velocity can change if either its speed changes or its direction changes, or both.
Calculation of velocity of an object
The velocity of an object at the end of the time interval can be calculated using the equation of motion, where force (F) is equal to mass (m) times acceleration (a):
\(F = ma\)
Rearranging this equation to solve for acceleration:
\(a = F/m\)
Substituting in the known values:
\(a = 8.00 N / 1.3 kg = 6.153846154 m/s^2\)
The equation of motion to calculate the final velocity (v) of the object:
\(v = v0 + at\)
Where v0 is the initial velocity (which is 0 since the object is at rest), and t is the time interval.
Substituting in the known values:
\(v = 0 + (6.153846154 m/s^2) * (2.7 s) = 16.714512 m/s\)
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An instrument made of brass is an example of which of these?
solid–liquid solution
solid solution
liquid–liquid solution
gas–liquid solution
Answers
Answer:
a solid made of liquid solution
Explanation:
a trumpet for example has intrcuite valves , the only way to do this is by creating a liquid form of the metal to be able to create the solid formed instrument.
Answer:
a solid made of liquid solution
Explanation:
domne
A table exerts a force on the ground. The ground exerts
A. no force on the table
B. a greater and opposite force on the table
C. an equal and opposite force on the table
D. a lesser an opposite force on the table
Answers
Answer:
hey from what I know the answer is C
Explanation:
When a book is kept on a table , weight (gravitational force) of book acts on table vertically downwards and as a reaction of weight , table also exerts an equal and opposite ( upward) force on book .
a car of mass 1500 kg is moving with the speed of 72 km/ hr (calculated it's kinetic energy)
Answers
Answer:
So work require will be 3888×10×10³J
Explanation:
⇒Work done=Change in kinetic energy
⇒KE=1/2mv²
⇒Mass->15000kg
⇒Velocity->72km/h
⇒KE=1/2×15000×(72)²
⇒KE=1/2×15000×5184
⇒KE=7500×5184
⇒KE=3888×10×10³J
What is the difference between a primary and a secondary cell?
Answers
Primary cells are the ones which cannot be recharged and have to be discarded after the expiration of the lifetime whereas, secondary cells need to be recharged when the charge gets over. Both the types of battery are used extensively in various appliances and these cells differ in size and material used in them.
A 230 v mains powered electrical drill draws a current of 2.5 A calculate the power of the drill at use
Answers
this questions pls help
Answers
Answer:
1. True
2. False
3. True
4. True
5. False
heat in the amount of 100 kj is transferred directly from a hot reservoir at 950 k (th) to a cold reservoir at 600 k. calculate the entropy change of the two reservoirs.
Answers
To calculate the entropy change of the two reservoirs, we need to use the formula:
ΔS = Q/T, where ΔS is the entropy change, Q is the amount of heat transferred, and T is the temperature of the reservoir.
First, let's calculate the entropy change of the hot reservoir. We know that Q = 100 kJ, and T = 950 K. Therefore:
ΔS(hot) = Q/T = 100 kJ / 950 K = 0.1053 kJ/K
Next, let's calculate the entropy change of the cold reservoir. We know that Q = -100 kJ (because heat is being removed from the hot reservoir and transferred to the cold reservoir), and T = 600 K. Therefore:
ΔS(cold) = Q/T = -100 kJ / 600 K = -0.1667 kJ/K
Note that the entropy change of the cold reservoir is negative because the heat transfer is from hot to cold, which goes against the natural flow of energy. This means that the cold reservoir becomes more ordered (less entropy) as it receives heat.
So, the detailed answer to the question is that the entropy change of the hot reservoir is 0.1053 kJ/K, and the entropy change of the cold reservoir is -0.1667 kJ/K.
We can use the following steps:
Step 1: Calculate the entropy change for the hot reservoir (ΔS_H)
ΔS_H = -Q/T_H
Since Q = 100 kJ = 100,000 J, and T_H = 950 K, the equation becomes:
ΔS_H = -100,000 J / 950 K
Step 2: Calculate the entropy change for the cold reservoir (ΔS_C)
ΔS_C = Q/T_C
With Q = 100,000 J, and T_C = 600 K, the equation becomes:
ΔS_C = 100,000 J / 600 K
Step 3: Calculate the total entropy change (ΔS_total)
ΔS_total = ΔS_H + ΔS_C
After calculating the entropy changes for both reservoirs, you will find the total entropy change of the two reservoirs.
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in the circuits shown, the brightness of the bulbs is observed to compare as follows: a is the brightest, and b and c are equally bright and dimmer than a (a>b=c)
Answers
In the given circuit, bulb A is the brightest, while bulbs B and C have equal brightness that is dimmer than A (A > B = C).
This observation indicates that bulb A has the highest current passing through it, while bulbs B and C share a lower current equally. This could be due to bulb A being part of a parallel circuit branch, while bulbs B and C are connected in series in another branch.
In parallel circuits, the voltage across each bulb is the same, leading to higher brightness, whereas in series connections, the voltage divides across the bulbs, resulting in lower brightness. However, because they have a lower resistance than bulb a, they are both dimmer than bulb a.
Bulbs b and c have equal resistance, which means they share the same amount of current and are therefore equally bright.
Thus, we can conclude that bulb a has a higher resistance than bulbs b and c.
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Bulb A is brighter than B or C because the current is greater through A than B or C.
Bulb A is brighter than B or C because the circuit containing bulb A has overall less resistance.
Bulb A is brighter than B or C because bulb B and C get only half the current from the batter, while A get all of it.
Why is bulb A brighter than B or C?The current flowing through the circuits is directly proportional to the potential difference across the circuit.
I = V/R
where;
V is the voltageR is the resistanceFrom the circuit diagram, bulb A is connected to one battery while bulb B and C are connect to one batter as well.
Also bulb B and C are connect in series, so both bulbs (B and C) share the current delivered by the one battery equally.
The current received by each bulb B and C is calculated as;
I(B) + I(C) = V/R = I
I(B) = I(C) = I/2
I/2 + I/2 = I
where;
I/2 is each current flowing in bulb B and C.V is the voltage delivered by the one batteryThe bulb A on the other hand, gets all the current delivered by the one battery, and hence shines the brightest.
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If we keep on applying force on a material object, can it gain speed of light?
Answers
Answer:
As an object moves faster, its mass increases. ... Because masses approach infinity with increasing speed, it is impossible to accelerate a material object to (or past) the speed of light. To do so would require an infinite force.
Which of the following options depicts a chemical change?
a Heating of water
b Separation of mixture
c Steel becomes rust
d All of the above
Answers
Answer:
C
Explanation:
Rusting is a different material other than steel, (Basically the steel is no longer steel and rust can't be undone, ((chemical change)))
Steel becomes rust depicting a chemical change. Therefore, option (C) is correct.
What is the chemical change?A chemical change can be described as a change in which a chemical substance is converted into one or more different kinds of substances. Chemical changes take place via the process of chemical reactions leading to the formation of different properties.
Chemical changes can be described as irreversible and also known as permanent in nature where an entirely new substance is formed. In steel, rust is invasive as well as corrosive, eating or etching the metal.
When acidic materials including water come in contact with metals, such as iron or steel, rust starts to form. Rust can be the result of corroding steel after the iron particles have been exposed to oxygen and moisture such as humidity, vapor, and immersion.
Therefore, the stell gets rust is a chemical change.
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A car has four tires that are each inflated to an absolute pressure of 2. 0 x 10^5 Pa. Each tire has an area of 0. 024 m^2 in contact with the ground. How much does the car weigh?
a.
1. 9 x 10^3 N
b.
2. 9 x 10^4 N
c.
1. 2 x 10^3 N
d.
1. 9 x 10^4 N
Answers
According to given information to find the weight of the car, we can use the concept of pressure and area. The car weighs approximately 4.8 x 10³ N.
1. The absolute pressure in each tire is given as 2.0 x 10⁵ Pa.
2. The area of each tire in contact with the ground is given as 0.024 m².
To calculate the weight of the car, we can use the formula:
Pressure = Force / Area
Rearranging the formula, we have:
Force = Pressure x Area
Now, let's plug in the values:
Force = (2.0 x 10⁵ Pa) x (0.024 m²)
Multiply the values:
Force = 4.8 x 10³ N
Therefore, the weight of the car is approximately 4.8 x 10³ N.
Conclusion ,The car weighs approximately 4.8 x 10³ N.
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suppose that 15 years from now, dr. currie directly images an earth-like planet around tau ceti, a nearby star with a mass equal to that of the sun and concludes that its semimajor axis is about 1.4 au. according to kepler's 3rd law of motion, the planet's orbital period is closest to ...
Answers
Super-Earth-sized exoplanet Tau Ceti e revolves around a G-type star. It is 0.538 AU away from its star, with a radius of 0.538 AU, has a mass of 3.93 Earth masses, has a mass of 3.93 Earth masses, has a mass of 3.93 Earth masses, has a mass 3.93 In 2017, word of its finding spread.
What's a planet, exactly?A celestial body that (a) circles around the Sun, (b) has sufficient mass to dissipate rigid body forces and assume a hydrostatic equilibrium shape (nearly round), and (c) has cleared the space inside and surrounding its orbit is considered a planet.The distance a planet is from the Sun tends to result in colder surface temperatures on planets. The exception is Venus, which is the hottest planet in our solar system due to its close closeness to the Sun and its thick atmosphere. The results of calculations and simulations show that Mercury is, on average, the planet that is closest to Earth and to every other planet in the solar system.To learn more about planet, refer to:
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Steam flows through a nozzle at mass flow rate of
m =0.1 kg/s with a heat loss of 5 kW. The enthalpies at inlet and exit are 2500 kJ/kg and 2350 kJ/kg, respectively. Assuming negligible velocity at inlet (C 1 ≈0), the velocity (C2 ) of steam (in m/s) at the nozzle exit is (correct to two decimal places)
Answers
If negligible velocity at inlet (C 1 ≈0), the velocity (C2) of steam (in m/s) at the nozzle exit is 447.21 m/s.
According to question:
The steady flow energy equation for steady flow devices
m (h1 + ((c1)2/2) + z1g) + Q = m (h2 + ((c2)2/2) + z2g) + Wcv
C1 = 0
Wcv = 0
z1 = z2
mh1 + Q = mh2 + m((C2)2/2)
m((C2)2/2) = m(h1-h2) + Q
0.1 × ((C2)2/2) × 10-3 = 0.1(2500-2350) -5
C2 = 447.21 m/s
Thus, the negligible velocity at inlet (C 1 ≈0), the velocity (C2) of steam (in m/s) at the nozzle exit is 447.21 m/s.
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You are consulting for a ski resort building a ramp for ski-jumping. The available vertical distance between the top of the slope and the proposed location of the ramp is 50 meters. The available vertical distance between the ramp and the ground is another 50 meters, but there is a 30-meter-wide chasm between the ramp and the safe spot. What should the launch angle of the ramp be to make sure skiers safely clear the chasm
Answers
If we need to calculate the launch angle of the ramp to make sure skiers safely clear the chasm, the launch angle of the ramp should be 21.7 degrees
The ramp must provide sufficient horizontal velocity to cover the 30 m chasm safely. The horizontal velocity is given by this formula: vx = √(2g * s)Where g = 9.8 m/s², s = 30 m, and vx is the horizontal velocity that skiers must obtain. The horizontal component of the velocity is constant throughout the flight. Therefore, the horizontal distance skiers will cover is:v = vx * t where v is the horizontal distance and t is the time taken to cross the chasm. The time t can be calculated from the vertical component of the motion using the following formula: y = v0y*t - (1/2)gt²where y is the vertical displacement, v0y is the vertical component of the initial velocity, and t is the time taken to reach the other side of the chasm.
We can solve this equation for t, using the quadratic formula: t = [v0y + √(v0y² + 2gy)]/g We need to determine the launch angle that will give a sufficient horizontal velocity to cover the chasm with vx, then determine the vertical component of that velocity using the following formula:v0y = vx * tanθwhere θ is the launch angle. Combining all these formulas together, we can obtain an equation for θ:vx = √(2g * s)vx * tanθ + 1/2 * g * [vx * tanθ/ g]^2= (vx² * tan²θ + vx² * tan²θ) / (2g)vx = √(2gs / [1 + tan²θ])= √(2 * 9.8 * 30 / [1 + tan²θ])vx = 17.146 m/s
Now, we can calculate the vertical component of the initial velocity:v0y = vx * tanθ= 17.146 * tanθ
Using this formula: t = [v0y + √(v0y² + 2gy)]/g= [17.146 * tanθ + √((17.146 * tanθ)² + 2 * 9.8 * 50)] / 9.8t = 3.544 seconds
Therefore, the launch angle of the ramp should be 21.7 degrees to make sure skiers safely clear the chasm.
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I’m confuse like which two types of fields vibrate in light wave
Answers
Electromagnetic waves consists of alternate electrical and magnetic fields.
Light is a electromagnetic wave. Hence in light wave, electrical and magnetic fields vibrate.
NO LINKS AND PLEASE ANSWER ASAP!!
of Newton's three laws of motion specifically applies in each of the
following situations:
a. Newtonj 3d Low You feel a force against the sole of your foot as you
take a step forward.
b.
A meteor moving in a straight path changes direction
when it flies by Earth.
C.
A full grocery cart that is pushed starts moving and
increases speed, but the same push increases its speed even more when the
cart is empty.
d.
A skateboard moves faster in the same direction it is
pushed.
Answers
Answer:
Its b because the meteor moving strait.
Explanation:
occam's razor states that choose one: a. if two hypotheses fit the facts equally well, choose the one with fewer assumptions. b. the laws of nature are the same everywhere in the universe. c. the universe is expanding in all directions. d. patterns in nature are really manifestations of random occurrences.
Answers
Option a: if two hypotheses fit the facts equally well, choose the one with fewer assumptions.
Occam's razor states that principle of problem solving is that entities should not multiply more than necessary
Occam's Razor is the process of gathering information to make the search for the truth easier. In science, it gets rid of all assumptions that have no bearing on the predictions of the hypothesis. If you have several hypotheses that could explain an observation, it is usually best to start with the simplest one.
Occam's Razor is often at the root of a paradigm shift, where an established theory is replaced by a simpler alternative that also fits the data. For example, Ptolemy's epicycles were replaced by a simpler theory that explained the data without multiplying the elements.
Therefore Option (a) is correct.
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Toy cars 1, 2, and 3 are launched horizontally with the trajectories shown below. Cars 1 and 2
are launched from a 15 m high cliff, while Car 3 is launched from a 30 m high cliff. We can
ignore air friction.
Answers
Initial launch speed of the cars are in order as Vcar 1 = Vcar 2< Vcar 3
Speed (often abbreviated as "s") is a scalar variable that describes how much an object's location changes over time or how much it changes per unit of time. The average speed of an item in a period of time is the distance traveled by the object divided by the duration of the period.
Time divided by distance are the speed-related metrics.. The meter per second (m/s) is the SI unit of speed, while the kilometer per hour (kph) is the most often used unit of speed in daily life.
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A wave with a frequency of 70.0 Hz travels through rubber with a wavelength of 0.80 m. What is the velocity of the wave?
Answers
Explanation:
everything can be found in the picture
Please help, I will give brainly.
Answers
The specific latent heat of vaporization of water is 2300 kj/kg.
What is the specific latent heat of vapourization?
Specific latent heat of vapourization is the quantity of heat required to convert unit mass of a substance from liquid to vapour state without change of temperature.
We have...
Q = heat energy = 69 kj
m = mass = 0.030 kg
L = Specific heat
The formula is given by:
Q = mL
L = Q / m
L = 69 / 0.030
L = 2300 kj / kg
Please help me with this assignment!
Answers
Answer:
Ice cube, molecules, melting, zero degrees, liquid, faster, temperature, 100 degrees, steam
Answer:
lol you got the answer just need points sorry
Explanation:
The force of gravity depends on the mass of objects and the distance between them. TRUE OR FALSE?
Answers
The force of gravity depends on the mass of objects and the distance between them. This is true statement.
What is force?Physics defines force as the push or pull that modifies the velocity of a massed object.
The ability to change a body's resting or moving condition is referred to as an external force. There is a magnitude and a direction to it.
You may determine the Force using a spring balance. The SI's measure of force is the Newton.
The force of gravity between two objects is directly proportional to the mass of the object and inversely proportional to the square of the distance between them.
Hence, the force of gravity depends on the mass of objects and the distance between them. This is true statement.
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the gulf stream appears to be slowing down in velocity. what is thought to be a main driving force for this?
Answers
The main driving force thought to be behind the slowing of the Gulf Stream is believed to be climate change. As the atmosphere and oceans warm, the Gulf Stream is losing heat to the atmosphere.
What is the Gulf Stream ?The Gulf Stream is a powerful ocean current that originates in the Gulf of Mexico and flows northward along the eastern coast of the United States. It is part of the North Atlantic gyre, a system of circulating ocean currents. The Gulf Stream is an important part of the global conveyor belt, a system that helps regulate the ocean's climate by transporting warm tropical waters to cooler regions of the world. The Gulf Stream is so powerful that it is able to move more water than all of the world's rivers combined. It transports more than 100 million cubic meters of water per second and has a maximum speed of up to 5.6 km per hour.
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23. What is the total resistance of the combination of two resistors in the diagram?
A. 0.03
B. 0.15
C. 6.67
D. 30
Answers
True or False
1)All forces cause a change in an object’s speed and direction.
Answers
Answer:
True
Explanation:
Answer and Explanation:
True I believe bc if you put a certain amount of force on an object it'll move and depending on where you place the force on the object it'll move in that direction. How much force and how much weight the object has will determine the speed...
7. Newton's second law says that when an equal force is applied to______a it causes it to _______
Answers
Answer
newtons first law says that when an equal force is applied to force it causes it to accelerate
Explanation: