Explanation:
(i) The density bottle must be held by the neck to avoid expansion. (ii). The outside must be wiped clean. (iii).
Answer:
The density bottle must be held by the neck to avoid expansion The outside must be wiped cleanExplanation:
hope this helpCalculate the current flowing if a charge of 36 kilocoulombs flows in 1 hour.
Answer:
sorry I didn't get it, my apologies
Researchers aboard the International Space Station use the latest technology to advance our understanding of which concept?
soil and rocks
health and medicine
electromagnetic spectrum
radio waves in space
Researchers aboard the International Space Station use the latest technology to advance our understanding of health and medicine. option B. This is further explained below.
What is health?Generally, wellness refers to a condition of absence of disease or harm.
In conclusion, The newest technological advances in health and medicine are being used by researchers on board the International Space Station. choice B
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Answer: health and medicine
Explanation:
What is the mass of a 5kg object on the Moon?
The mass of a 5kg object is 5kg. Makes no difference where it happens to be located.
Answer:
The mass of a 5kg object is 5kg
Explanation:
Have a great day
What would the volume of a gas be at –125oC, if it had a volume of 693 mL at 45oC?
Answer:
322.5mL
Explanation:
According to Charles's law, which state that at constant pressure the volume of fixed mass of a gas is proportional directly to it's temperature.
This can be expressed as
V1/ T1 = V2 / T2
Where
V1= initial volume= 693 mL
V2= final volume
T2= final temperature=( –125°C + 273)= 148K
T1= initial temperature= (45°C+ 273)=318K
V1/ T1 = V2 / T2
693/318 = V2/148
693×148 = 318 × V2
V2=102564/318
= 322.5mL
PLEASE HELP!!!! WILL GIVE BRAINLIEST!!!!
Do you think that Franklin actually performed the kite experiment? Why or why not?
Answer:
He not only hypothesized that lightning and electricity were linked, but that metal objects could be used to draw lightning in order to protect homes from being hit. But Franklin didn't feel that he could get his conductor high enough into the clouds to do any good, so he never completed the experiment.
Explanation:
there ya go :)
true or false: electromagnets are an example of how magnetism can create electricity.
true or false: electromagnets are an example of how electricity can create magnetism.
true or false: electromagnetic induction is where we use magnetism to create electricity.
true or false: you can change the amount of strength that an electromagnet has.
true or false: iron fillings can be use to show magnetic field lines around bar magnets but not around electromagnets.
I dont really know but i think the first one is true super sorry
Electromagnets are an example of how electricity can create magnetism is True statement.
What is Electromagnet?Permanent magnets are not the same as electromagnets. Coils of wire with electricity running through them make up electromagnets. An electromagnet's wire coils act like magnets when an electric current flows through them because moving charges produce magnetic fields.
The coils stop functioning as a magnet when the electricity is turned off. When magnetic forces are only required for brief periods of time, electromagnets are frequently used in electrical equipment.
They both make use of electromagnets, which use electricity to apply a magnetic field. Extremely strong electromagnets are used by wrecking yards to transfer heavy scrap metal or even entire cars from one location to another.
Therefore, Electromagnets are an example of how electricity can create magnetism is True statement.
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Will give brainliest
Magnesium in group 2 has an oxidation number of +2. Which group would it easily react with?
Group 13
Group 1
Group 18
Group 16
Answer:
I think 18 not entirely sure though
Explanation:
Group 18 are the noble group so 16 + 2 = 18
A 10.0 kg mass is lifted 5.0 m above the ground.
Find the change in gravitational energy.
Answer:
500 J
Explanation:
formula of Energy is: E=mass*height*g, where g≈10 (m/s²).
according to the formula above: E=10*5*10≈500 (J)
A train is traveling at a constant rate of speed of 64 kilometers per hour. How many
hours will it take the train to travel a distance of 160 kilometers?
Please provide the units with it
Answer:
2.5 hours
Explanation:
we know that the train travels 64km every hour so we just need to divide 160km by 64km to see how many hours it will take
160÷64= 2.5
hope this helps chu :3
What is the speed of a Ball rolling South 50 meters in 2 seconds?
Answer:
25m/s
Explanation:
speed = distance/time = 50/2 = 25
If Manuel exerts a force of 10 N to push a desk to the right at the same time Lynn exerts a force of 15 N to push the desk to the left, the desk will move to the
left
right
sideways
it won't move
Answer:
The desk will move to the left.
Explanation:
Since Manuel is exerting a force of 10 N to the right, and Lynn is exerting a force of 15 N to the left, it means that Lynn is exerting a force of 5 N more than Manuel, meaning that the desk will move to the left, the direction Lynn is pushing it too.
Please like and mark brainliest!
Hope it helps!
What do we call a collection of matter that does not interact with anything
else in the universe?
A. The forces that act in a collision
B. An intergalactic highway
C. An isolated system
D. A system in which collisions always occur
Answer: an isolated system
Explanation:
PLEASE HELP!!!!!!
Is this correct?
A 2000 Kg car going 20 m/s crashes into a wall. What is the force of the car on the wall?
Answer:
40,000N
Explanation:
Force = Acceleration × Mass
2000×20=40,000
An automatic shotgun has a mass of 10 kg. It fires 30 g bullets at the rate of 6 bullets per second with a speed of 400 m/s. What force must be applied to the gun to keep it in position?
Answer:72 N
Explanation: thats whats right
Antonym for Radiation lol
Answer:
convergence is the correct answer
Answer:
absorption, concealment, containment, refrain, repression, suppression, withholding, confinement, restriction, constraint
wait no....
diffusion, emission, polarization, spread, ramification, divarication, propagation, transmission, broadcast, circulation and dissipation.
LOL
PLEASE HELP ME WITH THIS ONE QUESTION
What is the final temperature when 625 grams of water at 75.0° C loses 7.96 x 10^4 J? (cwater = 4186 J/kg°C)
Answer: 44.57°C
Explanation:
The following can be deduced from the question:
Specific heat of water = 4.186 J/kg
From the question, we can infer that 625 × 4.186 joules of heat will be lost when there's a 1°C drop of water.
We then calculate the amount if degrees that it'll take to cool for 7.96 x 10⁴J. This will be:
= 7.96 × 10⁴ /(625 × 4.186)
= 79600/(625 x 4.186)
= 79600/2616.25
= 30.43°C
The final temperature will then be:
= 75.0°C - 30.43°C
= 44.57°C
the long-term average weather for a region is called
Answer:
Climate.
Explanation:
Weather can be defined as the atmospheric conditions of a particular area over a short period of time.
The elements of weather include precipitation, wind, temperature, atmospheric pressure, relative humidity, cloud, and wind speed.
The long-term average weather for a region is called climate.
This ultimately implies that, when the average atmospheric conditions prevailing in a specific region persists for a very long period of time, it is known as climate.
A geosynchronous satellite orbits Mars (mass = 6.42 x 1023 kg) once every Martian day, 88640 s. At what radius does it orbit?
Answer:
angular speed ω = 2PI / T rad/sec
ω^2*r = M*G/r^2
r = ³√ M*G/ω^2 = ³√6.42*10^23*6.67*10^-11*88640^2/39.5 = 2.04*10^7 m
Explanation:
A geosynchronous satellite orbits Mars once every Martian day, 88640 s then the radius of the orbit will be equal to 2.04 × 10⁷ m.
What is gravity?The fundamental force of attraction operating on all matter is recognized as gravity, also spelled gravity, in mechanics. It has no impact on identifying the interior properties of common matter because it is the weakest force known to exist in nature.
As per the given data in the question,
Mass, m = 6.42 x 10²³ kg
Time, T = 88640 s
Use the formula of velocity for satellite,
v = 2πR/T
Where R represents the radius
Use the formula of centripetal acceleration,
[tex]a_c[/tex] = v²/R
Thus;
[tex]a_c[/tex] = (2πR/T)²/R
= 4π²R/T²
The formula for gravitational acceleration is:
[tex]a_g[/tex] = Gm/R²
G = 6.674 × 10⁻¹¹ m³/kg. s²
Now, the satellite's gravitational acceleration is what is responsible for its centripetal acceleration. Thus,
Centripetal acceleration = gravitational acceleration.
Thus;
4π²R/T² = Gm/R²
Making R the subject gives;
R = ∛(GmT²/4π²)
Substitute the values in the above equation,
R = ∛((6.674 × 10⁻¹¹ × 6.42 x 10²³ × 88640²)/(4 × π²))
R = 2.04 × 10⁷ m
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A gazelle is running at 17.46 m/s. He sees a lion and accelerates at -1.49 m/s/s,
How fast is he running 2.39 seconds later?
Answer:
V=21.0211m/s
Explanation:
Use V=vi+at
So, V=17.46m/s+(1.49m/[tex]s^{2}[/tex])(2.39s)= 21.0211m/s
A student determines that a sample has a mass of 157.2 g and a volume of 20 cm^3. Which
substance from the table is the student analyzing?
Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!
linkcutter.ga/gyko
A locomotive is pulling 19 freight cars, each of which is loaded with the same amount of weight. The mass of each freight car (with its load) is 37,000 kg. If the train is accelerating at on a level track, what is the tension in the coupling between the second and third cars? (The car nearest the locomotive is counted as the first car, and friction is negligible.)
Explanation:
The tension between cars 2 and 3 accelerates cars 3 through 17. That is a total of 15 cars.F = M*a, with M = 15*37,000 = 555*10^3 kga = 0.7 m/s^2Solve for F, in Newtons
Block A of mass 2.0 kg is released from rest at the top of a 3.6 m long plane inclined at an angle of 30o, as shown in the figure above. After sliding on the horizontal surface, block A hits and sticks to block B, which is at rest and has mass 3.0 kg. Assume friction is negligible. The speed of the blocks after the collision is most nearly
The speed of the blocks after the collision is most nearly will be Vf= 2.376 m/s.
What is collision?Collision is defined as when two bodies of different masses move towards each other with a particular speed, then there will be three cases after the collision.
Elastic collision, in which the kinetic energy of the object remains constant.
Inelastic collision in which the kinetic energy is not conserved after the collision.
Completely elastic collision, in which the masses stick together after the collision and move with a final speed.
It is given in the question that
Mass of body A= 2 kg
Velocity of body A= ?
Mass of body B=3 kg
Velocity of body B= 0 m/s
since the body is coming from the inclined place at an angle 30 so the height will be calculated as:
[tex]\rm Sin\theta=\dfrac{h}{H}[/tex]
Inclined plane H=3.6 m
[tex]\rm Sin30=\dfrac{h}{3.6}[/tex]
[tex]h=1.8 m[/tex]
Now the initial velocity of the object from the conservation of energy
[tex]m_Agh=\dfrac{1}{2}m_Av_A^2[/tex]
[tex]v_A=\sqrt{2gh[/tex]
[tex]v_A=\sqrt{2\times9.81\times 1.8}=5.94\ \frac{m}{s}[/tex]
Now form the collision is completely elastic so the momentum before collision will be equal to after collision.
[tex]m_Av_A+m_Bv_B=(m_A+m_B)v_f[/tex]
[tex](2\times 5.94)+(3\times0)=(2+3)v_f[/tex]
[tex]v_f=\dfrac{11.88}{5}=2.376\ \frac{m}{s}[/tex]
Thus the speed of the blocks after the collision is most nearly will be Vf= 2.376 m/s.
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What problems do you think might arise from not having a clear definition of "high crimes and misdemeanors"?
Answer:
People might misunderstand it and problems might happen because the audience will have different opinions.
Explanation:
Calories tell you how much energy is in a food. True or False
Answer:True. The number of calories in a food is a measure of how much potential energy that food possesses.
Explanation:
this is what I need help with
Answer: transverse wave
Explanation: the particles are moving up and down
A deer is walking at 2.27speeds up to 13.42 m/s, covering a distance of 53.2 meters during this acceleration. How much time did it take him to do this.
Answer:
t=3.964s
Explanation:
Use t=d/s
t=53.2m/13.42m/s= 3.964s
what is resistance
Answer:
Resistance is the measure of the opposition to current flow in an electrical circuit
Resistance refers to the opposition or hindrance that a material or object offers to the flow of electric current. It is a fundamental concept in the field of electrical engineering and physics.
Resistance is measured in ohms (Ω) and is denoted by the symbol "R."
In electrical circuits, resistance is caused by various factors, including the type of material, its dimensions, and its temperature.
The primary element contributing to resistance is the collisions between electrons and atoms within the material through which the current is passing.
When an electric current flows through a conductor, such as a wire, the electrons move along the path of the conductor. However, as they do so, they encounter resistance.
This resistance causes the electrons to collide with atoms, which generates heat and dissipates energy.
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How does wavelength change depending on whether the pipe is open or closed?
Answer:
* in a tube with both ends open
λ = 2L / n n = 1, 2, 3,…
* tube with one end open and the other closed.
λ = 4L / n n = (2n ’+ 1 )
Explanation:
When a sound wave enters a pipe, a resonance process occurs, whereby only some wavelengths can occur.
* in a tube with both ends open
in this case there are maximums at each end, so if the length of the had is L
λ = 2L 1st harmonic
λ = 2 L / 2 2nd harmonic
λ = 2L / 3
λ = 2L / n n = 1, 2, 3,…
* In the case of a tube with one end open and the other closed.
At the open end there is a belly and at the closed end a node
λ = 4L 1st harmonic
λ = 4L / 3 3rd harmonic
λ = 4L / 5
λ = 4L / n n = 1, 3, 5,… odd
n = (2n ’+ 1 ) where n’ are all integers
Emma draws another diagram showing how adding energy affects this wave. How does her new diagram compare to this diagram?
A
Her diagram shows higher wavelengths.
B
Her diagram shows lower wave amplitudes.
С
Her diagram shows lower wave frequencies.
D
Her diagram shows higher wave amplitudes.
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