Answer:
Quan sát sóng dừng trên sợi dây dài 60cm cố định hai đầu, thấy có 3 nút (bao gồm cả hai
nút hai đầu) và 2 bụng. Bước sóng của sóng lan truyền trên sợi dây là:
5
2. A truck took 4 hours to complete a journey. At the first 2h,
it travelled at an average speed of 70 km/h. For the rest of
the journey, it travelled at an average speed of 80 km/h.
What was the total distance of the journey?
Answer:
300km
Explanation:
we use the formula s=d/t and solve for d.
d=st
s1=70km/h
s2=80km/h
t=2h
total d= (ts1)+(ts2)
=2(70)+2(80)
=300km
Arwan finds a piece of quartz while hiking in the mountains. When he returns to school, he takes it to his science teacher. She helps him determine the mass to be 788.9 g. She also tells Arwan that the density of quartz is 2.6 .
What is the volume of Arwan’s piece of quartz?
Answer:
303.42
Explanation:
cause i got it right on my question
Please help I'll mark brainliest NO LINKS
Answer:
B
Explanation:
Answer:
B
Explanation:
i just did this question last week
How do you determined the atomic mass and mass number of an atom?
Answer:
For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.
Explanation:
A force of 10 N works on a ball over a distance of 5 m. The force is perpendicular to the displacement of the ball. What is the total work done by the force?
Since the force is perpendicular to the displacement of the ball, the total work done by the force is 50 Nm.
Given the following data:
Force = 10 NewtonDistance = 5 metersTo find the total work done by the force:
The work done by an object is the product of the perpendicular force acting on the object and the distance it covers.
Mathematically, work done is given by the formula:
[tex]Work\;done = Force[/tex] × [tex]distance[/tex]
Substituting the given parameters into the formula, we have;
[tex]Work\;done = 10[/tex] × [tex]5[/tex]
Work done = 50 Nm.
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Use the Pythagorean Theorem to find the velocity of an airplane traveling north at 100 kilometers per hour. It is also flying through a wind that is blowing west at 30 kilometers per hour.
Answer:
I'm not sure
Explanation:
HAVE FAITH IN UR SELF AND YOU WILL GETT ITTTT HOPEFULLAYY
Analyze data table #1 and then create a line graph comparing speed and time.
A car, which started at rest, took 5.8 seconds to reach a velocity of 2km/s. What is
the average velocity?
Answer:
1 m/s
Explanation:
Use SUVAT and the equations of motion:
S
U = 0 km/s since it started at rest.
V = 2 km/s
A
T = 5.8 seconds
Equation used: [tex]v=\frac{v+u}{2}[/tex]
[tex]v=\frac{2+0}{2}[/tex]
v=1
the full range of electromagnetic energy is called the
Answer: the electromagnetic spectrum
Explanation:
The full range of frequencies of electromagnetic radiation is called the electromagnetic spectrum. From longest to shortest wavelengths, it includes radio waves, microwaves, infrared light, visible light, ultraviolet light, X rays, and gamma rays.
Hope I have helped, and have a good day!!!
A water bottle contains 15.0 ounces of water. A person drinks 0.5 ounces per minute. How many hours will it take to drink all of the water?
The weight of a boy with a mass of 50 kg is
N. (Estimate 10
m/s2 forg)
Answer:
500N up........
.......
What is qualitative research?
Quality research most commonly refers to the scientific. process encompassing all aspects of study design; in. particular, it pertains to the judgment regarding the match. between the methods and questions, selection of subjects, measurement of outcomes, and protection against.
Answer:
Research is "creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization, and analysis of information to increase understanding of a topic or issue. A research project may be an expansion on past work in the field.
Explanation:
I'LL MARK YOU BRAINLISTTT!!!!
Answer:
i think it is c
Explanation:
sorry if im wrong
If 21.35 divides 12.96.
What’s the answer
Plzzz help me
Answer:
1.647376
Explanation:
Change the divisor 12.96 to a whole number by moving the decimal point 2 places to the right. Then move the decimal point in the dividend the same, 2 places to the right.
We then have the equations:
2135 ÷ 1296 = 1.647376
and therefore:
21.35 ÷ 12.96 = 1.647376
Both calculated to 6 decimal places.
HELP HELP HELP HELP
An object has a mass of 3.8 kg and a force of 11.6 N is applied to it. What is the acceleration that results?
[tex]\\ \sf\longmapsto F=ma[/tex]
[tex]\\ \sf\longmapsto a=\dfrac{F}{m}[/tex]
[tex]\\ \sf\longmapsto a=\dfrac{11.6}{3.8}[/tex]
[tex]\\ \sf\longmapsto a=3.05m/s^2[/tex]
correct answer choice??
-----------------------------------------
Explanation:
magnitude=force/charge
=(2.6N)/(1.5 ×10^-6)
=1.7 × 10^6 N/C
what is acceleration of gravity
Answer:
Verified answer
Explanation:
Make me as brain liest plz
write the energy change when charging the battery of a mobile phone
Answer:
Chemical energy
Explanation:
Because most of the modern mobile batteries are lithium ion batteries where the electricity is stored by the chemical changes in the ionic structure of the battery.
Answer:
to make an energy the electricity provide the energy charging when use
A car's speed 3 seconds after accelerating from rest at 2 m/s^2 is?
Answer:
After 3 seconds, the velocity is 4.5+3×1.5=9 m/s.
NEED HELP!!!!! 11 POINTS!!!
Troy has decided that he wants to be healthier. He has been doing a pretty good job sticking to the exercise routine that he designed. However, he tends to eat a lot of junk food. He assumes that if he is exercising, diet is not really that important. What is the BEST response to Troy’s assumption?
A.
If he eliminates junk food, he will be eating healthy.
B.
As long as he is not overweight, diet does not matter.
C.
If he exercises a lot then it does not matter what he eats.
D.
Exercise and attention to diet need to go together to build health.
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Convierte 25 Km/h a m/s
Answer:
6.94444
Explanation:
Answer:
6.944m/s
Explanation:
[tex]25km/h * \frac{1h}{60min}*\frac{1min}{60s} *\frac{1000m}{1km}[/tex]
[tex]\frac{25km}{1h} * \frac{1h}{60min}*\frac{1min}{60s} *\frac{1000m}{1km}[/tex]
[tex]\frac{25km*1h*1min*1000m}{1h*60min*60seg*1km}[/tex]
[tex]\frac{25*1*1*1000}{1*60*60*1}[/tex]
[tex]\frac{125}{18} = 6.944m/s[/tex]
Pleaseee helpppp meeeeeee I will give pountsss
Answer:
8.m= 0. 113 kg
W = 1.1074 N
g = 9.8 m/ s²
9.m= 870 kg
W = 8526 N
g = 9.8 m/s²
10.a) weight on earth:
weight = mass × acceleration due to gravity (g)
g on earth = 9.8 m/s²
W = 75 × 9.8
W = 735 N
b) g on Mars
285 = 75 × g
g = 285/ 75
g = 3.8 m/ s²
is it possible for humans to use there extra eyelid?
Answer:
Known as the “plica semilunaris,” it's much more prominent in birds and a few mammals, and functions like a windshield wiper to keep dust and debris out of their eyes. But in humans, it doesn't work. It's vestigial, meaning it no longer serves its original purpose.
Explanation:
Hope it helps
Please heeelllllppppppppp
Answer:They repel each other
Step by Step Explanation :
If you bring a positive object near the electroscope, it will attract the electrons toward the terminal. The leaves will move away from each other. You can also use this process with a positive object to charge the electroscope.
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If a car accelerates from 0 to 10 m/s in 4 seconds, and the mass of the car is 1500 kg. What force is created by the car?
Answer:
PLS MARK BRAINLIEST
Explanation:
f=m (v- u)/t
u=0m/s
v=10m/s
t=4 secs
m=1500kg
f=1500(10-0)/4
f=3750N
The half-life of Radon-222 is 3.8 days. Calculate how long a 48g sample of radon will last before it contains only 3g of radon.
PLS HELP FOR MY GCSE REVISION! ill give brainliest
Answer:
48 / 3 = 16
1 / 16 of the original amount is to remain
4 half lives = 1/2 * 1/2 * 1/2 * 1/2 = 1/16
After 4 half lives 1/16 of the original amount is present
4 half-lives * 3.8 days / half-life = 15.2 days
After 15.2 days only 3 g will be present
Equations for work
W=
F=
D=
Answer:
W= work
F= force
D= Displacement
Explanation:
Work can be calculated with the equation: Work = Force × Distance.
Answer this question fast please
Answer:
A. Strain
Explanation:
(no explanation)
write down the relation between energy and power.
Energy is what makes change happen and can be transferred form one object to another. Energy can also be transformed from one form to another. Power is the rate at which energy is transferred. It is not energy but is often confused with energy.
Energy and power are closely related but are not the same physical quantity. Energy is the ability to cause change; power is the rate energy is moved, or used.
Can someone please give me the answers to this? ... please ...
Answer:
See below:
Explanation:
Motion is what makes something move, there are different types and different ways to make motion, motion also comes with forces.
To figure out the motion type, we can simply see the wording of the sentence:
1) Air Resistance is the motion of air, it would be pushing up to stop the fall a bit.
2) We can neglect the resistance by being straight so we have to deal with less of it.
3) This motion is not in motion as nothing happened/happening.
4) This is friction as the friction of the ground and turning the car is slowing it down.
5) The motion is going in any direction as it depends on the start of the asteroid and its starting angle.
6) If its not moving; there is no motion.
7) We can neglect it by going on a 0 degree slope.
8) We simply have to do nothing as its already a law and will happen naturally.
9) The motion is basic motion with some friction due to its scenario.
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