A phrase which describes a scientific law is: a statement of how volume is related to its temperature.
What is a scientific law?A scientific law is a type of scientific statement and it can be defined as a statement of fact that is generally and universally accepted to be true and verified because it has always been proven and observed to be true.
This ultimately implies that, a statement of how volume is related to its temperature is a phrase which describes a scientific law.
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8. Automobile tires are made of rubber infused with carbon and metal wires. Durability aside, why
not make tires out of pure rubber?
Tires aren't made from pure rubber because it makes the weight higher which increases the engine load.
What is Tyre?
This is defined as a piece of rubber which is attached to the wheels of automobiles for movement.
Pure rubber isn't used to make tyres because it has a higher weight which increases the engine load thereby making the vehicle slower.
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A 0.200-g ball hangs from a thread in a vertical electric field of 3.00 kN/C directed upward. What is the
charge on the ball if the tension in the thread is (a) zero and (b) 4.00 mN?
find the fundamental unit of density.
Answer:
The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre. For example, the density of water is 1 gram per cubic centimetre, and Earth's density is 5.51 grams per cubic centimetre.
Explanation:
Four different constant forces are exerted on a 2. 0 kg object. The figure represents the magnitude and direction of each force. If the object is initially at rest, how long will it take the object to reach a speed of 2. 0 m/s?.
Based on the mass of the object, and its acceleration, the time taken to reach a speed of 2.0 m/s is 4 seconds.
How many seconds will the object take to reach the required speed?The time can be found as:
= Required speed / Acceletation
Accelaration is:
= Force / Mass
= (0.99iN + 0jN) / 2kg
= 0.5 ms⁻²
Time taken is:
= 2 / 0.5
= 4 seconds
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Since the force that axts on the object is the resultant force, the time taken is 0.8 s.
What is resolution of forces?Since force is a vector, it can be resolved into its components. From the complete question, the componenets of the force are;
Vertical component;
5N sin 373N sin 9017 N-20NTotal = 3 + 3 + 17 - 20 = 3 NHorizontal component;
5N cos 373N cos 90Total = 3.99 + 0 = 4Resultant force = √(3)^2 + (4)^2 = 5N
Now;
F = ma
a = F/m
a = 5N/2. 0 kg
a = 2.5 m/s^2
Given that;
v = u + at
since u = 0 (object started from rest)
2 = 2.5 * t
t = 2/2.5 = 0.8 s
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If an object accelerating at −1.5m/s^2 takes 1.2s to reach 5.0m/s, what was its initial speed?
-1.5 m/s^2 x 1.2 seconds = -1.8 m/s
It is a negative value which means the object slowed down. The object would have originally been going that amount more.
5.0 + 1.8 = 6.8 m/s
answer: 6.8 m/s
A current-carrying wire with many loops is called a magnetic field. A wire coil. A solenoid. A bar magnet.
When current-carrying wire with many loops is connected across the battery, the magnetic field is created in the wire. A current-carrying wire with many loops is called a Solenoid.
What is current?The current is the stream of electrons flowing from positive terminal of the battery to the negative terminal so as to generate electricity.
When the current flow through wire is bent into the shape of circle and continued making several loops. This wire form is called Solenoid.
Thus, a current-carrying wire with many loops is called a Solenoid.
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Answer:
C.) A solenoid.
Explanation:
Edge, 2022.
(See the attachment below.)
What is the law of conservation of mass? A. the law that states that matter can be created but not destroyed. B. the law that states that matter cannot be created or destroyed. C. the law that states that matter can not be created but can be destroyed.
Answer:
The answer is B
Explanation:
hope it helps :)
-. A 2000 kilogram (kg) weather satellite is orbiting Earth. The satellite
takes pictures of Earth to help forecast weather. At what altitude,
in kilometers (km), would the strongest gravitational force be
acting on the satellite while it orbits Earth?
F. 10 000 km
G. 15 000 km
H. 30 000 km
I. 40 000 km
Answer:
H
Explanation:
I think it's H hope that helps
Of the following approximate conversions of celsius into fahrenheit, which is most accurate? a. 24°c almost-equals 75.9°f b. 2°c almost-equals 35.8°f c. 34°c almost-equals 92.7°f d. 13°c almost-equals 55.0°f
The most accurate among the options is 13°c almost-equals 55.0°f, when you round down 55.4, you get 55.0
Hence, option D) is the most accurate.
What is Scale of Temperature?Scale of temperature is simply a method used in calibrating the physical quantity of temperature in metrology.
Conversion of Celsius into Fahrenheit, Formula is expressed as;
Degree = (0 × 9/5) + 32 = Fahrenheit
First we check each option;
A) 24°c almost-equals 75.9°f
24°C = (24 × 9/5) + 32 = 75.2°F
B) 2°C almost-equals 35.8°f
2°C = (2 × 9/5) + 32 = 35.6°F
C) 34°C almost-equals 92.7°f
34°C = (34 × 9/5) + 32 = 93.2°F
D) 13°c almost-equals 55.0°f
13°C = (13 × 9/5) + 32 = 55.4°F
The most accurate among the options is 13°c almost-equals 55.0°f, when you round down 55.4, you get 55.0
Hence, option D) is the most accurate.
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A ball is hit so that it accelerates at 10 m/s2. The ball hits a glove with a force of 5 N. What is the mass of the ball?
Answer:
0.5 kg
Explanation:
» Concepts
Newton's second law, the Law of Acceleration, states that F = ma, where F = Force in Newtons, m = mass in kg, and a = acceleration in m/s^2.
» Application
We are asked to find the mass of the ball using the equation F = ma. We're also given the force and acceleration, so the equation looks like 5 = 10(m).
» Solution
Step 1: Divide both sides by 10.
[tex]5/10=10m/10[/tex] [tex]m=0.5[/tex]Thus, the mass of the ball is 0.5 kg.
A 900 kg car speeds up from 33m/s to 45 m/s. How much work is done to increse the speed?
Hint: ( Work done = Change in energy, here it is change in K.E)
Answer:
f=ma
m=900
a=45-33=12÷1=12
12×900=f
f=10800
Spacesuits have different parts, each of which is important for the astronaut’s survival.
Use the same article and answer the question.
Space Suit
On the back of the spacesuit is a backpack called the Primary Life Support Subsystem. Why is this backpack important?
Answer:
On the back of the spacesuit is a backpack called the Primary Life Support Subsystem. This backpack contains the oxygen that astronauts breathe during a spacewalk. It removes carbon dioxide that astronauts exhale. The backpack also provides electricity for the suit.
Explanation:
got a 100%.
brainliest, please?
Subject- Science 6th grade
please help with my hw. Thank you!
what is area expansivity
An increase in area of a solid when heated is called area or superficial expansivity.
100 POINTS NEED ASAP
Determine the energy released per kilogram of fuel used.
Given MeV per reaction, calculate energy in joules per kilogram of reactants.
Consider 1 mole of plutonium-239 to be a mole of “reactions” (molar mass = 239 grams).
The energy released per kilogram of fuel used is mathematically given as
energy release per kg= 6.702*10^{-13}. This is further explained below.
What is the energy released per kilogram?Generally, is simply defined as
Energy used per person per year in US = 3-5 X 10^11
Population (No. of person)= 3.1x 10^8
Mass of feut required = 3.5x10^11 x3-1x10 8 x 10 )/6.703 X10^{13} kg
Mass of feut required = 1.62x10^{33}kg
Solution: Mev in Joule 6 = 10 1.60* I0^{-19} J
1 Mev= 1.602 X 10 T
energy release per kg= 1.602*10^{13}/2.39x10^{-3}
energy release per kg= 6.702*10^{-13}
In conclusion, Energy
energy release per kg= 6.702*10^{-13}
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A pendulum of length 1m and period 2.01s is placed at the top of mount everest having an altitude of 8849m. calculate the value of g at that point
Answer:
F = K M / R^2 acceleration due to gravity at R
F2 / F1 = (R1 / R2)^2
R1 = radius of earth = 6.37E6 m
R2 = 6.37E6 + 8.85E3 = 6.38E6
F2 / F1 = .9984^2 = .997
The value of g would only be about .003 less than at the surface
A sailboat is moving at a constant velocity is work being done by a net external force
Answer:
Yes
Explanation:
The wind net force acting on the sail is doing work. (The 'net' force takes into account the force of friction between the boat hull and the water)
It makes no difference how many coils of wire there are, the same amount of voltage is produced with any number of coils.
True or false
The given statement is false. Because the induced emf is dependent on the number of coil.
What is Faraday law of electromagnetic induction?According to Faraday's law of electromagnetic induction the rate of change of magnetic flux link with coil is responsible for generating emf in the coil result in the flow of amount of current .
So in order to increase the current we need to increase the EMF;
so we can increase it by;
1) Increasing the number of turns
2) Increase the area of the loop
3) By moving the magnet faster
Hence, the given statement is false.
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A 800hz tuning fork is vibrating, producing a sound wave in the air.
what is the frequency of the sound wave?
800 hz
what is the speed of the sound wave?
what is the wavelength of the sound wave?
Answer:
The frequency of the sound wave is 800Hz
The speed of sound in a is about 340m/s.
Velocity = frequency x wavelength
making wavelength the subject formula
wavelength = Velocity/frequency.
wavelength = 340/800
wavelength = 0.425m.
HCl, HBr and HI are all extremely corrosive acids. They are also all part of the same group the Halogens and completely separate when mixed with water. The only one in the group that doesn’t act as strong acid is HF. What make fluorine different from chlorine, bromine, and iodine?
Fluorine different from chlorine, bromine, and iodine,because it is the most electronegative and reactive element in the periodic table.
What is a periodic table ?The periodic table is an organization of all known elements in order of increasing atomic number and repeating chemical characteristics.
They are organized in a tabular format, with a row representing an era and a column representing a group.
Elements are ordered in increasing atomic number order from left to right and top to bottom.
Elements of the same group will have the same valence electron configuration and, as a result, will have comparable chemical characteristics.
Elements in the same period, on the other hand, will have an increasing order of valence electrons. Fluorine,chlorine, bromine, and iodine are halogens.
Hence,fluorine different from chlorine, bromine, and iodine because it is the most electronegative and reactive element in the periodic table.
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Fluorine is most electronegative element and halogen in periodic table
The tendency of attraction towards electrons is highest for Fluorine.In HF
There is a single bond between H and FThe electronegative nature of Fluorine makes the bond stronger and it's hard for H to get out of bond to give H+ Hence it's a very weak acid .Magnetic fields and electric fields are identical in what
Magnetic fields and electric fields are similar on the basis of the forces and its application.
What is an electric field?
An electric field is an electric property that is connected with any location in space where a charge exists in any form. The electric force per unit charge is another term for an electric field.
Magnetic and electric fields have certain similarities, are as follows;
1. Both the electric force and magnetic forces are the non-contact forces.
2. Both acts between the two entity having certain mass.
3. Both have their respective ranges.
Hence, magnetic fields and electric fields are similar on the basis of the forces and its application.
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A sound wave travels at 379 m/sec and has a wavelength of 8 meters. Calculate its frequency and period.
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
Wavelength, Wavespeed and frequency depends on each other in the following way :
[tex]\qquad \sf \dashrightarrow \: frequency = \dfrac{wave \: \: velocity}{wavelength} [/tex]
[tex]\qquad \sf \dashrightarrow \: f = \dfrac{389}{8} [/tex]
[tex]\qquad \sf \dashrightarrow \: f \approx 48.62 \: \: hertz[/tex]
And we know the Reciprocal relationship between frequency and period ~
So, let's find it's period •
[tex] \sf{\qquad \sf \dashrightarrow \: t = \dfrac{8}{389}} [/tex]
[tex] \sf{\qquad \sf \dashrightarrow \: t \approx 0.02 sec } [/tex]
The load across a 12-v battery consists of a series combination of three resistances are 15 ω, 21 ω, and 24 ω, respectively
The magnitude of the circuit current is 0.20 A. The value of the current in the circuit is found with the help of the ohm's law.
What is ohm’s law?Ohm's law claims that the voltage across a conductor is directly proportional to the current flowing through it.
All the resistance combined in the series so that the equivalent resistance is;
[tex]\rm R_{eq}= R_1+R_2+R_3 \\\\ R_{eq}=15+21+24 \\\\ R_{eq}=60 \ ohm[/tex]
This current-voltage connection may be expressed mathematically by the Ohm's Law;
V=IR
[tex]\rm I_{total} = \frac{V}{R_{total}} \\\\ \rm I_{total} = \frac{12}{60} \\\\ I_{total} = 0.20 \ A[/tex]
Hence, the magnitude of the circuit current is 0.20 A.
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Cesium has 37 isotopes, the most of any element on the periodic table. One of Cesium's most stable isotopes undergoes beta decay to form Barium-135. Which of the following is the correct isotopic notation for the original Cesium isotope before it decayed?
Cesium has 37 isotopes. One of Cesium's most stable isotopes undergoes beta decay to form Barium-135. 135 Cs 55 is the correct isotopic notation for the original Cesium isotope before it decayed.
What is beta decay?Beta decay is a radioactive decay in which a proton is converted into a neutron or vice versa inside the nucleus of the radioactive sample.
In beta decay, an electron is ejected which increases the atomic number.
135Cs55 ⇒135Ba56 + 0e-1
Cesium Barium beta particle
Thus, 135 Cs 55 is the correct isotopic notation for the original Cesium isotope before it decayed.
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To three significant figures, the speed of light is _____.
Explanation:
300,000,000 ÷ 3.00 = 100,000,000 = 10^8
So we can write 300,000,000 = 3.00 x 100,000,000 = 3.00 x 10^8.
The speed of light is 3.00 x 10^8 m/s.
Create a cylinder with a height of 9 cm and a radius of 5 cm. Notice that the estimated volume calculation is 706. 9 cm3. Drag the orange dot to double the radius. What do you notice about the volume?.
Answer:
Its D , Its is four times larger
Explanation:
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Can someone please answer this, ill give you brainliest Would be very appreciated.
sugar dissolves in water = solubility (solvent)
causes ice cubes to get bigger in the ice tray = expand upon freezing
warm water but cold water in the spring = heat capacity/specific heat
"film" on top of water = surface tension
stickiness of water = cohesion
Answer:
See below ~
Explanation:
sugar dissolves in water ⇒ solubility (solvent)
causes ice cubes to get bigger in the ice tray ⇒ expand upon freezing
warm air but cold water in the spring ⇒ heat capacity/specific heat
"film" on top of water ⇒ surface tension
stickiness of water ⇒ cohesion
Between 1992 and today, astronomers using large telescopes have discovered many icy pieces that orbit in the same region as the orbit of Pluto. These are believed to be members of the
Icy pieces that orbit in the same region as the orbit of Pluto are believed to be members of the Kuiper belt.
What is the Kuiper belt?The Kuiper belt is a shape-disc formation in the solar system observed from Neptune and more away from our sun.
The Kuiper belt consists of different celestial bodies including among others icy pieces, planets, and comets.
In conclusion, icy pieces that orbit in the same region as the orbit of Pluto are believed to be members of the Kuiper belt.
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I need help with my homework please?
Answer:
1c 2d 9e 6n 3j 9i
Explanation:
That is at least half i will let you Finish it
Answer:
1=e
2=g
3=h
4=f
5=j
6=b
Explanation:
.......
What are properties of a wave
Answer:
amplitude, wavelength, frequency, and speed.
Explanation:
No matter whether you are talking about vibrations or waves, all of them can be characterized by the following four characteristics