Statement:
Mateo moved the teacher's table with 50 N of force for 2 meters.
To find out:
The work done in pushing the table.
Solution:
Force (F) = 20 NDisplacement (s) = 2 mAngle between displacement and force (θ) = 0We know, work is said to be done when force acting on a body produces motion in the direction of force applied.And the formula for work done isF s Cos(θ)Therefore, the work done in pushing the table= 50 × 2 × Cos (0°) J= 100 × 1 J= 100 JAnswer:
The work done in pushing the table is 100 J.
Hope it helps.
If you have any query, feel free to ask.
example of an object that has pressure energy
Answer:
Balloon
Explanation:
it inflates because of the air pressure inside
Do two magnets create magnetic force fields that allow them to interact without touching? Did the investigation answer the question? Explain whether the investigation gave enough evidence to support the idea that invisible magnetic force fields exist.
Answer:
Magnetic forces are non contact forces; they pull or push on objects without touching them. Magnets are only attracted to a few 'magnetic' metals and not all matter.
Answer:
the person above me is correct i think respectlfully he
not correct
Explanation:
lots of time spent wondering
During what processes would your body use a condensation reaction? you can use specific examples.
Answer:
To cool down.
Explanation:
When your body is cold and you enter a wet environment the moisture from the air will condense on your skin much like a cold glass of water on a hot day.
which object describea an object that has no unbalanced force acting on it
Answer:
If an objecta is at equilibrium, then all the individual forces are balanced. There is no unbalanced force acting upon the objecta.
A strip of glass with pieces of paper stuck to it.The glass is attracting the pieces of paper. What does this tell you about the charges on the glass and the paper?The glass and the paper have the same charge.The glass and the paper have different charges.Neither the glass nor the paper has a charge.
Answer:
the glass and paper have diffrent charges
Explanation:
if the glass is charged positively then the paper was charged negatively
the to charges were to attract think of it as a magnet
Answer:
The answer is B. the glass and the paper have different charges
Explanation:
The glass will attract the pieces of paper. Remember opposite charges attract
a child rides her bicycle in her level driveway . what form of energy does she possess
a.elastic
b.kinetic
c.potential
d.nuclear
The ______ move rock up and down like ocean waves.
Answer:
erosion lol
Explanation:
none thats all i have lol
1) When you hold your nose and go underwater, you can still hear sounds that are made above the water, in the air, if they are loud enough. This is because the _________________ in the air get transferred to the water.
Answer:
Vibrations
Explanation:
That is why when under water it sounds muffled and you cannot hear clearly.
Answer:
Vibrations
Explanation:
Vibrations are transferred through water. That's how dolphins are able to tell where food, family, and objects are
please vote brainliest!!
i need this to be correct and explane why its that answer.
You can make your exercise harder (or easier) by using this ___________ law(s) to design the perfect workout.
A.
second
B.
first
C.
third
D.
combination of all three
Answer:
option A is your answer hope it will help you
Answer:
up with the argument that trade was better than conquest or warfare at spreading religions such as Islam. Which two pieces of evidence would support this argument?Mahmūd attacked India because of its wealth from the Silk Road trade.Islamic scholars moved from Baghdad to Delhi in 1258.The Ramayana and Mahabharata are popular subjects of Southeast Asian art.Conquering armies did not spread religion and culture efficiently.Islam reached southern India before Mahmūd attacked northern India.
Explanation:
Plz don't copy from other people. 100 points. Brainliest
Write a summary paragraph for each part discussing this experiment and the results. Use the following questions and topics to help guide the content of your paragraph.
Part 1
What was your hypothesis? According to your data, do you think your hypothesis was correct? (Be sure to refer to your data when answering this question.)
Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems.
Be sure to submit your data along with your paragraph.
Part 2
What effect did the temperature have on the viscosity of the honey? (Be sure to refer to your data when answering this question.)
Give at least two practical examples where knowledge of viscosity is important.
A blue and a green billiard ball, each with a mass of 0.15 kg, collide directly. Before the collision, the blue ball had a speed of 3 m/s while the green ball had a speed of 2 m/s. After the collision, the blue ball stays in place while the green ball continues in motion.
Answer:
.
Explanation:
Can you specify what is the question asking for
What can cause disease after an atomic bomb?
dust
hydrogen
fallout
electrons
Answer: it will be fallout or hydrogen
Explanation:
A ball is moving at 2 m/s and has a momentum of 12 kg•m/s. What is the ball's mass?
Answer:
6 kg
Explanation:
p = mv
Which of these is larger than a solar system, but smaller than the universe?
'These"
Explanation: galaxy
why is there a metal grid in a microwave? explain using reference to the em spectrum
Answer:
Visible light has much smaller wavelengths and can pass through the holes unobstructed. It isn't possible to see (resolve) objects and features smaller than the wavelength of light (electromagnetic radiation) used so this is why the mesh works.
Explanation:
A baseball has a mass of 1.5 kg. It is thrown by a major league pitcher at a speed of 45 m/s (100 mph). What is the momentum of the baseball?
Answer:
67.5 kgm/s
Explanation:
momentum = mass x velocity
What is the kinetic energy of a 0.5 kg soccer ball that’s traveling at a speed of 3m/s
Answer:
K.E is 2.25 J
Explanation:
Data :
Mass = m = 0.5 kg
Velocity = v = 3 m/s
Formula for K.E
K.E = 1/2mv²
Put values
K.E = 1/2(0.5)(3)² = 2.25 J
Answer:
Explanation:
Ke=1/2mv2
Ke= 1/2(0.5kg)(3m/s)²
Ke = 2.25 J
10. If a plane travels north for 2.5 hours at a velocity of 150 km/hr what distance did it travel?
Answer:
375 km
Explanation:
Using the equation, d = vt, we simply plug in the numbers:
v = 150 km/hr
t = 2.5 h
d = (150 km/hr)*(2.5 h)
d = 375 km
Oliver investigates conduction of thermal heat
energy.
Heats a metal rod.
the metal rod has a pin attached with wax.
Oliver measures the time it takes before the pin falls off the rod.
the pin takes 45 seconds before it falls.
a.) describe how Oliver makes hie result more reliable.
b.) oliver does a risk assessment for his investigation.
He considers the safety hazards.
Describe TWO of the safety hazards in Olivers investigation.
1.
2.
He can make the experiment more reliable by repeating the experiments about three times and then taking the average value.
What is thermal conduction?
Conduction is a mode of heat transfer in which there is no actual movement of the particles of the substance. Oliver can make his results more reliable by accurately observing the time taken before the pin falls off and by repeating the experiments about three times and then taking the average value.
Also, he need to;
Avoid an outburst of flame.Prevent the hot metal from touching his skin.Learn more about thermal conduction: https://brainly.com/question/10542041
what is the acceleration of something that is not moving?
What does it mean to take a percent of something?
Answer:
To take part of a whole number Ex: 10% of 30 is 3
Answer:
It can mean many things, but mostly taking a chunck of something whether it's money or food. Many things have percent too them.
Explanation:
Example: you are working for me i pay you 50% of my income which is 1000 % you we would split it half because 50% means half so you would get 500, i would get 500.
What happens when light goes through a prism gizmo.
Since each color is refracted at a slightly different angle, the result is that the light splits into band of colors.
hope this helps!
If an object sinks in water, would you say it is more dense or less dense than water?
Answer:
More dense
Explanation:
Density is a measure of how heavy something is compared to its size. If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float.
which type of earthquake waves is the last to be recorded on a seismogram?
A mechanical wave is created when a source of energy causes _____.
a displacement that must be filled
a vibration to travel through a medium
the structure of a medium to be altered
A mechanical wave is created when a source of energy causes a vibration. Vibration causes disturbance in system.
What is mechanical wave?A mechanical wave is a wave that is caused by the oscillation of matter and so conveys energy through a medium.
When an energy source causes a vibration to propagate across a medium, it is called a mechanical wave.
A mechanical wave is a type of wave in which the medium's vibration is perpendicular to the wave's travel direction.
Hence, vibration is the correct answer.
To learn more about the mechanical wave, refer to the link;
https://brainly.com/question/3101711
#SPJ1
1. A meter rule is found to balance at the 48cm mark. When a body of mass 60g is suspended at the 6cm mark the balance point is found to be at the 30cm mark. Calculate, i) the mass of the meter rule 11) the distance of the balance point from the zero end, if the body were moved to the 13cm mark.
Hi there!
We can use a summation of torques to solve.
Recall the equation for torque:
[tex]\large\boxed{\Sigma \tau = rF}[/tex]
r = distance from fulcrum (balance point)
F = force (in this instance, weight, N)
We can set the fulcrum to be the balance point of 30 cm.
Thus:
Meter ruler:
Center of mass at 48 cm ⇒ 48 - 30 = 18 cm
Object:
At 6cm ⇒ 30 - 6 = 24 cm
For the ruler to be balanced:
[tex]\large\boxed{\Sigma \tau_{cc} = \Sigma \tau_{ccw}}[/tex]
Thus:
[tex]M_Rg(18) = 60g(24)\\M_R = \frac{60(24)}{18} = \boxed{80 g}[/tex]
The mass of the ruler is 80 grams.
If the body were moved to 13 cm:
B (balance point) - 13 = distance of object
48 - B = distance from ruler center of mass to balance point
[tex]80g(48 - B) = 60g(B - 13)\\\\3840 - 80B = 60B - 780\\\\4620 = 140B\\\boxed{B = 33 cm}[/tex]
The new balance point would be 33cm from the zero end.
Inside a television picture tube there is a build-up of electrons (charge of 1. 602 × 10–19 C) with an average spacing of 38. 0 nanometers between electrons. Find the electric field inside the picture tube. (Round to three significant figures. ).
The magnitude of the electric field inside the picture tube is 998.476 kN/C.
What is an electric field?
It is an area in the space where a charged particle experiences a force. It can be calculated by the formula,
[tex]E =\dfrac {kQ}{r^2 }[/tex]
Where,
[tex]E[/tex] = electric field produced
[tex]Q[/tex] = charge = [tex]1.602 \times 10^{-19}\rm \ C[/tex]
[tex]r[/tex] = distance = [tex]38 \times 10^{-9}\rm \ m[/tex]
[tex]k[/tex] = Coulomb's constant = [tex]9 \times 10^9 \rm \ N. m2 / C2[/tex]
Put the values in the formula,
[tex]E = \dfrac {9 \times 10^9\times 1.602 \times 10^{-19}}{(38 \times 10^{-9})^2}\\\\E = 998.476 \rm \ kN/C[/tex]
Therefore, the magnitude of the electric field inside the picture tube is 998.476 kN/C.
Learn more about the electric field:
https://brainly.com/question/3783640
Answer:
997,000 N/C
Explanation:
E2020
Which change will decrease the speed of a sound wave traveling through a gaseous matter? replacing the gaseous matter with a liquid replacing the gaseous matter with a solid decreasing the temperature of the matter increasing the temperature of the matter.
The speed of the sound increase with the increase in the temperature of the medium. Option D is correct.
What are sound waves?Sound waves are longitudinal waves which means they require a medium to travel.
The speed of the wave is faster in the solid (denser) material because particles are close in the solid than that in the liquid and gas.
The speed of the sound increase with the increase in the temperature of the medium because the particles move faster at a higher temperature.
Therefore, the speed of the sound increase with the increase in the temperature of the medium.
Learn more about sound waves:
https://brainly.com/question/13233345
Answer:
is B ....................
calculate the speed of a body covering a distance of 320 km in 4h
We have that the speed of a body covering a distance of 320 km in 4h is mathematically given as
V=22.22m/s is
From the question we are told
calculate the speed of a body covering a distance of 320 km in 4h
Generally the equation for the Speed is mathematically given as
[tex]V=\frac{distance }{time}\\\\Therefore\\\\V=\frac{320*1000}{4*60*60}\\\\[/tex]
V=22.22m/s
Hence
The speed of a body covering a distance of 320 km in 4h is
V=22.22m/s
For more information on Speed visit
https://brainly.com/question/7359669
A car is traveling at a speed of 30 km/hr and comes to a stop in 5 seconds. What Is it’s
acceleration?
Answer:
just devide the numbers if that dont work try to look it up online
Explanation:
The acceleration of a car traveling at a speed of 30 km/hr and coming to a stop in 5 seconds is 1.66 m/s².
Given:
Velocity, v = 30 km/hr
Time, t = 5 s
The acceleration can be computed from the ratio of velocity and time.
The acceleration is a vector quantity that can be positive or negative, and the standard unit of acceleration is m/s².
Convert velocity into meters per second:
v = 30×5/18
v = 8.33 m/s
The acceleration is calculated as:
a = v/t
Substitute the values:
a = 8.33/5
a = 1.66 m/s²
Hence, the acceleration of a car traveling at a speed of 30 km/hr and coming to a stop in 5 seconds is 1.66 m/s².
To learn more about Acceleration, here:
https://brainly.com/question/2303856
#SPJ3
