Answer:
I feel it's important to be civilly engaged in my community because it gives me a sense of placement and home in my own community. It also allows me to feel that my voice is being heard and not ignored.
please help me on this, really fast
Which are electromagnetic waves? Check all that apply.
earthquake waves
infrared waves
ocean waves
radio waves
ultraviolet waves
Answer:
infrared waves
radio waves
ultraviolet waves
Explanation:
Radio waves are used for communication such as television and radio.
Infrared light is used by electrical heaters, cookers for cooking food, and by infrared cameras which detect people in the dark.
Ultraviolet radiation can kill bacteria that are present in water - this sterilises the water and makes it safe to drink.
Answer:
infrared waves
radio waves
ultraviolet waves
Explanation:
Radio waves are used for communication such as television and radio.
Infrared light is used by electrical heaters, cookers for cooking food, and by infrared cameras which detect people in the dark.
Ultraviolet radiation can kill bacteria that are present in water - this sterilises the water and makes it safe to drink.
A plate has an area of 1m square. It slide down an incline plane , having an angle of inclined 60° to horizontal, which a velocity of 0.75m/s. The thickness of oil film between the plate and the plate is 2mm. Find the viscosity of the fluid if the weight of the plate is 90N
Answer:
[tex]\mu =0.169704 Ns/m^2[/tex]
Explanation:
From the question we are told that
Area of plate[tex]a=1m^2[/tex]
Angle of inclination [tex]\theta=60 \textdegree[/tex]
Velocity [tex]v=0.75m/s[/tex]
Thickness of oil [tex]t=2mm[/tex]
Weight of plate [tex]w=90N[/tex]
Generally the equation for shear force is mathematically given by
[tex]F=mgsin45 \textdegree[/tex]
[tex]F=90sin45 \textdegree[/tex]
[tex]F=63.639N[/tex]
[tex]F=\mu* \frac{v}{t}[/tex]
[tex]F=\mu* \frac{0.75}{2*10^-^3}[/tex]
[tex]\mu* \frac{0.75}{2*10^-^3}=63.639N[/tex]
[tex]\mu =\frac{63.639}{375}[/tex]
Therefore viscosity is given by
[tex]\mu =0.169704 Ns/m^2[/tex]
Will an object experience a greater force of gravity on the earth or moon? Why?
Answer:
Earth’s gravitational force is stronger
Explanation:
Earth’s gravitational force is stronger than the moon because of the presence of more massive objects in earth; on the flip side, the moon’s gravity is weaker than the earth due to smaller in size as compared to the earth. Earth gravity is denoted by g; conversely, moon gravity is denoted by gm
Answer: The greater an object's mass, the more gravitational force it exerts. So, to begin answering your question, Earth has a greater gravitational pull than the moon simply because the Earth is more massive. That's why the moon isn't pulled out of Earth's orbit by the gravity of larger planets or by the sun.
Explanation:
Question 1 of 10
Which situation represents the highest entropy of a deck of playing cards?
O A. In four piles, organized by suit
B. Stacked in a deck
C. In order of face value
D. Scattered over the ground
SUBMIT
Answer:
D.
Explanation:
Entropy is the measurement of disorder in a system. The greater the entropy the more disorder/mess there is. Options A B and C all have organized systems so D is the only one with the least orderly scenario
Scattered over the ground represents the highest entropy of a deck of playing cards.
What is entropy?Entropy is a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system.
Entropy is the measurement of disorder in a system. The greater the entropy the more disorder/mess there is. Options A,B and C all have organized systems so, D is the only one with the least orderly scenario
Hence, the option D is correct.
Learn more about entropy here:
Lhttps://brainly.com/question/24278877?referrer=searchResults
pls help i’ll give brainliest if you give a correct answer!!
Answer:
applied force since she is pushing the box
maybe, I'm not 100% sure
20 points**plz help
Explain the effect of increasing the number or size of the magnets on the speed of a motor.
Explanation:
the speed of the motor can be increased by increasing the strength magnetic field increasing the current flowing through the coil.
Using humor can be strategic to stop bullying when it is hapoingjng true or false
Can someone please give me the answer by 10 minutes
Insect A moves 5.0 m/min and insect B moves
9.0 cm/s. Determine which insect is ahead
and by how much after 30 min. Assume both
insects are moving in the same direction.
Answer:
insect B by 12m
Explanation:
30min = 1800s (times by 60)
5m/min x 30min = 150m
9cm/s x 1800s = 16,200cm = 162m
162m - 150m = 12m
help plss .. Two bicyclists are accelerating forward in a straight line, and Biker 1 has less
mass than Biker 2. If the net force on the bikers is the same, which statement
describes their acceleration?
Explanation:
Remember Newton's Second Law.
[tex]F=ma[/tex]
If the force acting on both bikers is the same, we can look at the relationship between acceleration and mass.
If Biker 1 has a mass of 10kg and Biker 2 has a mass of 20kg, and both are being acted upon by a force of 100 N, let's see what that looks like. [tex]100 = 10*a_1 \rightarrow a_1 = 100/10 = 10[/tex]
[tex]100 = 20 *a_2 \rightarrow a_2 = 100/20 = 5[/tex]
So, given the same force, an object with GREATER mass will have less acceleration.
Why do you think that this type of fossil is called a print fossil?
Answer:
Fossils are the remains of plants, animals, fungi, bacteria, and single-celled living things that have been replaced by rock material or impressions of organisms preserved in rock.
Answer ☝ on pic that is non print fossil of dinousor
Answer ☝ on the pic is print fossil of turtle
# CARRY ON LEARNING
# SORRY
PLEASE HELP ME WITH THIS!!!!
Answer:
wasts materials such as cans. it can hit space crafts and satellites. no one has ever been killed by space debris, space vessels very rarely are seriously damaged.
please answer I will give brainleist
Which of the following does not describe when something has acceleration?
Changes in displacement
Changes in speed
Changes in direction
Changes in speed and direction
Answer:
changes in displacement
Explanation:
1.
Sarah has a chocolate box that has a length of 12 cm, a width of 6 cm, and a height of 9
cm. What is the volume of the box?
2.
A water tank is 90 m long. 60 m wide, and 40 m deep. What is the volume of the water
tank?
3. A rectangular prism has a length of 4 m, a height of 9 m, and a width of 2 m. What is the
volume of the prism?
Answer:
i d k ok
Explanation:
Which of the following is NOT a example
of a chemical change?
A. an egg being cooked
B. a piece of paper being torn
C. a piece of bread being toasted
Answer:
B. a piece of paper being torn
Explanation:
A chemical change is one that cannot be reversed. This means the original properties of the substance or object cannot be restored.
If you cook a raw egg, it would turn into a boiled egg (or a poached egg, however it is being cooked). The reaction is irreversible, so you cannot turn the cooked egg back into a raw egg - it is basically impossible to 'uncook' an already cooked egg.
When you toast a piece of bread, it turns into toast. You can't 'untoast' it back into bread. The chemical changes have already occurred and cannot be undone.
If you tear a piece of paper, it is still paper. You are only ripping it, not changing anything about it. You could simply tape the torn bit back to the original bit, or glue it - either way, it is still paper and nothing has occurred to drastically change the physical state of it.
Therefore, B is not a chemical change.
DC current is less than AC current
true\false
Answer:
False
Explanation:
.......................
a man shoveling snow clears his front step using 200 joules in 100 seconds, how much power did he use
2 watts
20,000 watts
100 watts
300 watts
Answer:
2 watts
Explanation:
Define work What is the unit for work? For Physics, thanks.
Answer:
Work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement
Explanation:
Displacement vectors of 1m north, 3 m south, 6 m north, and 4 m south
combine to a total displacement of *
Answer:
zero
it ends at the starting point
Explanation:
-List ten different waves that you encounter in everyday life. Be specific, don't just say "sound
waves," but say "the sound waves generated by my cat meowing."
-For each of the waves in your list, specify whether it is a "transverse" or "longitudinal" wave
(I just need random everyday examples)
Answer:
1.Radio waves from using your TV.
2. microwaves you are in satellites.
3.UV light waves come from sunlight
4.x ray waves used at the doctors office
5. infrared waves are in remote controls when sending signals.
I don't know if I can think of another 5 right now. but I hope this helps.
A(n) _____ represents the U.S. in a foreign country.
A. attorney general
B. ambassador
C. secretary
D. embassy
Answer:
B(Ambassador)
Explanation:
The president appoints ambassadors to foreign countries to represent the United States.
How can an electric current produce a magnetic field
Answer:
When the compass is placed below the wire, and the electric current switched on, the needle deflects in the opposite direction. If an electric current is passed through a long coil of wire (a solenoid ) a magnetic field is produced which is the same shape as that of a bar magnet.
Explanation:
Answer:
a changing electric field creates a magnetic field.
Explanation:
if you have a circuit and you send AC current through (AC = Alternating current) so that the electrons move back and forth, they will create a changing electric field.
This produces a magnetic field (because that's what the universe does).
What is kinetic energy
Answer:
Kinetic energy, form of energy that an object or a particle has by reason of its motion. ... Kinetic energy is a property of a moving object or particle and depends not only on its motion but also on its mass.
Credits to britannica.com
Explanation:
Hope this helps
Kinetic energy of an object is the energy that it possesses due to its motion.
You get out of school and walk north for 20 minutes. You travel
1.6 km. What is your average velocity?
What is the
Answer:
[tex]\boxed {\boxed {\sf v= 0.08 \ km/min \ North}}[/tex]
Explanation:
Velocity is found by dividing the displacement by the time.
[tex]v=\frac{s}{t}[/tex]
where s is the displacement and t is the time.
The displacement is 1.6 kilometers, but it needs a direction as well. The question notes you walked North. The time is 20 minutes.
[tex]s= 1.6 \ km \ North \\t= 20 \ min[/tex]
[tex]v=\frac{1.6 \ km \ North} { 20 \ min}[/tex]
Divide.
[tex]v= 0.08 \ km/min \ North[/tex]
Velocity is a vector quantity, so that is why it has the measurement and the direction.
The average velocity is 0.08 kilometers per minute North.
Answer:
Are there no moderators here?
Who are moderators here?
Well, the above answer is correct..
✨
What are the velocity and acceleration of the ball at the highest point in its path? What are the velocity and acceleration of the ball at the highest point in its path? V=0,a=0. V=0,a=9.8m/s2up. V=0,a=9.8m/s2down. V=9.8m/supa=0. V=9.8m/sdowna=0
Answer:
v = 0 and a = 9.8 m/s²
Explanation:
When an object reaches the highest point, its velocity is equal to 0. After reaching the highest point, it starts to decelerate. The acceleration is in the downward direction and it is equal to g i.e. 9.8 m/s².
So, the velocity and acceleration of the ball at the highest point in its path is 0 and 9.8 m/s² downward.
Hence, the correct option is (d).
Vivian went on a bicycle trip through Germany with her family. One afternoon, she rode her bicycle along a long flat road at a constant speed for 24 kilometers (km). The ride took her 1.2 hours (h). At what speed did she ride her bicycle?
Answer:
20km/h
Explanation:
Given parameters:
Distance moved = 24km
Time = 1.2hrs
Unknown:
Speed of her ride = ?
Solution:
Speed is the distance covered per unit of time.
So;
Speed = [tex]\frac{distance}{time}[/tex]
Speed = [tex]\frac{24}{1.2}[/tex] = 20km/h
Calculate the BMI for a person who is 5'1" and weighs 172 pounds before you calculate the BMI you must convert the height into meters and the weight into kg you can use the internet to convert them
The answer for this are
32.9
.03
184.86
It’s PE
Answer:
It is 32.9
Explanation:
Place the following into scientific notation...(.000635)
*
