Answer:
Place the convex lens on a 'V' stand. . ii) Light a candle and take it far away from the lens along the principal axis. iii) Adjust the screen on the other side of the lens to get a clear image on it. iv) Measure the distance between the 'V' stand and the screen which gives a rough idea of the focal length of the lens.
why the watt is called derived unit ?
Answer:
It is because it is a unit of Power(which is a derived quantity)
How does the wind turbine generator work?
Answer: wind pushes directly against the blades of the turbine, which converts the linear motion of the wind into the rotary motion, then it spins the generator's rotor and the harder the wind pushes, the more electrical energy can be generated.
Explanation:
Which action will increase the gravitational force between two objects?
A. Moving the objects farther apart
B. Removing some mass from one of the objects
C. Removing half of each object
D. Moving the objects closer together
Answer:
D. Moving the objects closer together
Explanation:
A.P.E.X.
took the quiz
How much force would it would be required to stop a 950kg car traveling at 30 M/S in 1.5 seconds
Answer:
28500
Explanation:
Force equation - F = m * a
F = 950 * 30
F = 28500
Which produces more energy? Nuclear fission or nuclear fission?
Answer:
Nuclear fission
Explanation:
your so very welcome
Name 3-4 objects you use that depend on the electromagnetic spectrum.
Things I personally use:
-- my eyes
-- my smartphone
-- my garage door opener
-- my TV; also the TV remote
-- stove
-- microwave oven
-- toaster
-- night light
-- CD player
-- FM radio
-- car headlights
-- traffic stoplights
-- flashlight
-- telescope
-- binoculars
-- film camera
-- digital camera
-- GPS receiver
-- infrared thermometer
Things I don't personally use but are used by other people:
-- police radios
-- firemen's radios
-- EMT's ambulance radios
-- taxi drivers' radios
-- dentist's X-ray machine
80 POINTS, BRAINLIEST, AND QUESTION IS MULTIPLE CHOICE!!! (please answer quickly)
question:
If all matter has a gravitational force, why don’t two tennis balls on the ground move towards each other on their own?
A. The force of gravity from the tennis balls is too small.
B.The tennis balls are outside of each other’s gravity field.
C.The tennis balls are too small to produce any gravity.
D.There is too much friction between the balls and the ground
(the picture is just of the question)
Answer:
Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases.
When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.
Explanation:
I could be wrong but I would say B :)
Have a good day!
answer:
i believe the answer is d
explanation:
here's why;
c. is incorrect because everything has a gravitational force.
a. is also incorrect because gravity is what holds the tennis ball down and keeps it on the ground.
i don't really know how to explain why b. is wrong, but d. is the correct answer because the force of friction opposes the motion of an object, causing moving objects to lose energy and slow down.
good luck :)
i hope this helps
**please let me know if this was incorrect**
have a great day !!
You can calculate an average ________ if you know both the total distance and the total time of the trip. *
Answer:
speed
Explanation:
Given: an incomplete sentence
To fill: the blank
Solution:
Speed is not a vector quantity but a scalar quantity as it has magnitude but no direction.
Speed = Distance ÷ Time
You can calculate an average speed if you know both the total distance and the total time of the trip.
Average speed = Total distance ÷ Total time
40 g of which substance is saturated in 100 g of water at a temperature of 50°C?
A
KCI
B
Nacl
C
KNO3
D
NH4Cl
please help , its due soon
Marty is confronted by a mugger with a knife who demands his wallet. In an instant, his heart races, his breath quickens and his temperature shoots up. When the mugger looks over his shoulder, Marty bolts down the street without thinking. This example illustrates which response?
a. Fight-or-flight
b. Behavioral disengagement
c. Tend and befriend
d. None of the above
Answer:
A. fight or flight
Explanation:
but uh tend and befriend could be an option to get out of this situation ;)
a. Fight-or-flight
what is a fight-or-flight response?The fight-or-flight or the fight-flight-or-freeze response is a physiological reaction that takes place in response to a perceived harmful event, attack, or danger to survival. It became first described by Walter Bradford Cannon.
“The fight or flight response, or stress response, is triggered by a release of hormones either prompting us to live and fight or run away and flee,” explains psychologist Carolyn Fisher, Ph.D. “during the response, all bodily systems are operating to maintain us alive in what we've perceived as a dangerous scenario
Learn more about fight-or-flight response here
https://brainly.com/question/5302511
#SPJ2
more mass an object has _____ its gravitational force. HHHHHHHHHHHHHHHHHHHHHHEEEEEEEEEEEEEEEELLLLLLLLLLPPPPPPPPPPP
I think the word would be increases. I don't know what the options are though.
You plan to visit a friend who lives 30 miles away. You predict that your average speed for this trip will be 50 miles per hour. How long will your trip take?
0.4 hours (24 centimeters)
0.8 hours (48 centimeters)
0.6 hours (36 minutes)
1.66 hours (~100 minutes)
Answer:
.6 hours
Explanation:
to find time you divide distance by speed
Which is a TRUE statement about a series circuit
A. the charge has only one path through which it can flow.
B. The current through the circuit can take several paths
C. every part of the circuit is negatively charged
sistanc
ed to as
D. every part of the circuit is positively charged
Please answer this I have 20 minutes to finish this test
Answer:
A the charge has only one path through which it can flow.
why the friction between an object and a surface is less than when the surface is titled than when the same surface is horizontal
Answer:
nvjch
ffufuxuhxjcjfbfdhdh
An isloated point charge produce an electric field with magnitude E at a point 2 m away. At a point 1 m from the charge magnitude of the charge is .. A. E B. 2E C. 4E D. E/2
Answer:
the correct answer is C, E’= 4E
Explanation:
In this exercise you are asked to calculate the electric field at a given point
E = [tex]k \frac{q}{r^2}[/tex]
indicates that the field is E for r = 2m
E = [tex]\frac{ k q}{4}[/tex] (1)
the field is requested for a distance r = 1 m
E ’= k \frac{q}{r'^2}
E ’= k q / 1
from equation 1
4E = k q
we substitute
E’= 4E
so the correct answer is C
PLS ANSWERR THIS QUESTION FOR ME !!
Explanation:
20 joule is your answer
Answer:
here
mass m =100kg
distance d=50m
acceleration due to gravity a =10m/s²
work =force×displacement
= ma/d=100×10/50=20joule
Which of the following is considered to be a fine motor skill?
Jumping rope
Drawing
Running
Riding bicycle
If you place apiece of foil, a piece of black fabric, and a white sheet of paper all the same size in the sun for five minutes, which would absorb the most heat. Which would absorb the least heat? Briefly explain why.
A 10.0 kg mass is moving with constant speed of 10.0 m/s.
a.) How much work must be done to double the speed to 20 m/s?
b.) How much work must be done to reduce its speed to 5.0 m/s?
Answer:
what is the question name
the effect of current electricity
is
1.thunderstorm
2.lightning
3.friction
4.operating computer
pls choose one
Answer:
(3 ) friction hope this is correct
An object moves from point A to point B to point C, then back to point B and then to point C along the line
Answer:
Rectilinear propagation of light
Please list them from top to bottom, for exp like in your response, a,g,q,d. Giving quite some points for it.
On which of the following does upthrust Force depend?
*density of the object
*type of the liquid
*mass of the object
* volume of the immersed part of the object
* gravitational pull of Earth
Answer:
density of the object
volume of the immersed part of the object
Using the correct IUPAC nomenclature, what is the correct name, formula,
and classification of a compound that contains two nitrogen atoms and one
oxygen atom?
O A. Mononitrogen dioxide, N20, covalent compound.
B. Nitrogen dioxide, NO2, ionic compound.
O C. Dinitrogen monoxide, N20, covalent compound.
D. Nitrogen oxide, No, ionic compound.
Answer: C is right
Explanation:
N and O are no-metals and forms covalent bonds.
Usually they need a. Prefix whic tells number of atoms in compound
The electric field at a point 23 cm from a charged particle is 102424 N/C toward the particle. What is the charge on the particle? (Take k=9x109 Nm2/C2 )
Answer:
2.62×10⁻⁶ C
Explanation:
From the question,
Electric Field (E) = kq/r²....................... Equation 1
Where q = charge on the particle, r = distance of the electric field from the charge, k = coloumb's constant.
make q the subject of the equation
q = Er²/k.............................. Equation 2
Given: E = 102424 N/C, r = 23 cm = 0.23 m, k = 9×10⁹ Nm²/C².
Substitute these values into equation 2
q = (102424×0.23)/(9×10⁹)
q = 2.62×10⁻⁶ C
Hence the charge on the particle is 2.62×10⁻⁶ C
PLEASE HELPPP IF YOU CAN!
Answer:
2 m/s²
Explanation:
F = ma
4 = 2(a)
a = 2
If the mass of the cart was increased but the hanging mass remained the same, how would the acceleration be affected? Explain how you know in terms of net force and system mass.
Answer:
It is always said that mass is same everywhere.
A bird flies due north with a speed of 15 m/s relative to the air. The air moves due west with a speed of 11 m/s relative to the ground. What is the robin's speed relative to the ground?
Answer:
I'm not sure if the directions affect the speed tho
but I think it's 4? cause it's the speed relative to the ground
hope this helps:))
Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0 m/s.
196000 N
200000 N
200000 J
196000 J
Answer:
The correct answer is - 200000 J
Explanation:
We use the formula of kinetic energy:
The formula to calculate kinetic energy is,
Here,
Ec =1/2 x m x v^2
The mass of the roller coaster is, m = 1000 k g
The speed of the roller coaster is, v = 20.0 m/s
Therefore,
Ec=1/2 x 1000kg x (20m/s)^2 = 200.000Joule
200,000J
What is one of Kepler's laws of planetary motion?
a.Planets move on elliptical orbits with the Sun at one focus.
b.Gravitational force between two objects decreases as the distance is squared.
c.An object in motion remains in motion.
d.Inner planets orbit in the opposite direction of outer ones.
Answer:
a. Planets move on elliptical orbits with the Sun at one focus.
Explanation:
Johannes Kepler was an astronomer who discovered that planets had elliptical orbits in the early 1600s (between 1609 and 1619).
The three (3) laws published by Kepler include;
I. The first law of planetary motion by Kepler states that, all the planets move in elliptical orbits around the Sun at a focus.
II. According to Kepler's second law of planetary motion, the speed of a planet is greatest when it is closest to the Sun.
Thus, the nearer (closer) a planet is to the Sun, the stronger would be the gravitational pull of the sun on the planet and consequently, the faster is the speed of the planet in terms motion.
III. The square of any planetary body's orbital period (P) is directly proportional to the cube of its orbit's semi-major axis.
Hence, one of Kepler's laws of planetary motion states that planets move on elliptical orbits with the Sun at one focus. This is his first law of planetary motion.
Answer:
Planets move on elliptical orbits with the Sun at one focus.
Explanation:
Plato/Edmentum