Answers
Neutrons: neutral, red
Electrons: negative, blue
Related Questions
The number of protons equals the atomic number. TRUE OR FALSE?
Answers
Answer:
true
Explanation:
The number of protons, neutrons, and electrons in an atom can be determined from a set of simple rules. The number of protons in the nucleus of the atom is equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons.
A roller coaster travels down a 120 m track in 12.5 seconds how fast does the roller coaster go
Answers
Answer:
9.6m/s
Explanation:
Using the equation S=d/t where s=speed, d=distance, and t=time
plug in the known variables
S=120m/12.5s
S=9.6m/s
Which of these is not a method of preventing the corrosion of metals?
A) galvanising
B) painting
C) plating
D) rusting
Answers
Answer:
D
Explanation:
rusting is actually the corrosion of metals so it can't be a way to prevent itself.
You will measure and record the time it takes the cart to travel certain distances, and then complete some calculations. In the space below, write a scientific question that you will answer by doing this experiment.
Answers
Answer:
Take the measurement of the distance (d) with a meter rule (in meters) and also measure the time (t) of the travel in seconds with a stopwatch.
question: What is the speed of the cart?
Explanation:
The speed of an object in motion is the distance covered by the object with respect to time, that is, the ratio of distance covered to the time taken to reach that distance.
Speed = distance / time
= d (in meters m) / t (in seconds s) = m/s
A double inclined plane that moves is a(n) .
Answers
Answer:
a wedge.
Explanation:
it moves when you apply force to one end of the wedge.
Ram travel 50metre on a straight road in 30second . hari covers the same distance on the same road in 45s . who has done more work ? who has more ? Explain in short
Answers
Answer:
The ram has done more work because the rate at which the ram work is 1.6m/s and Hari is 1.1m/s
What is this question
Answers
Hope this helps and good luckk on ur examsss :))))
Have a nice day
why we can not measure the total amount of heat energy that a body contains
Answers
Answer:
... As has been previously discussed, heat is not something that is contained in an object.
Explanation:
Calculate the force used if 108J of work done is moving a wrapped present 9M
Answers
Answer:
F = 12 N
Explanation:
Mechanical Work
Mechanical work is the amount of energy transferred by a force. It's a scalar quantity, with SI units of joules.
Being F the force vector and s the displacement vector, the work is calculated as:
W = F.s
If both the force and displacement are parallel, then we can use the equivalent scalar formula:
W=F.s
When the value of the work is known and we need to find the force, we solve the above equation for F:
[tex]\displaystyle F=\frac{W}{s}[/tex]
The wrapping present is moved by s=9 m doing W=108 J of work. The force used is:
[tex]\displaystyle F=\frac{108}{9}[/tex]
F = 12 N
A certain mass of a gas occupies 2 litres at 27 °C and 100
pascal. Find the temperature when volume and pressure
become half of their initial values.
pls give with solution pls pls
Answers
Answer:
75k
Explanation:
You can see solution in the picture
The snow fell on me is my excuse so my mom won’t know that I’m getting bullied
Answers
Answer:
Aaaaw noooo. :(
Explanation:
what did they say to u and what state do u live in. I will help u stand up to them. I have taken down many bullies before by using words. in fourth grade, my friend was getting bullied by the class, then yelled and stood up for her. they all fell silent and never bullied her, or any of my friends again. For whatever reason they bully u is probably d.u.m.b. which means they r really d.u.m.b. Also, U should try finding out a lot of personal info about them that they dont want anyone to know. also tell the principal. Is ur mom nice, or mean? if shes nice, she'll support u and fight for u, which means u should address
Answer:
You should stick up for yourself because if you don't then no one else will but im always here to talk to you if you need someone
Explanation:
What is the difference between the geographic North Pole and the magnetic north pole?
Answers
Answer:
Magnetic north is the direction towards the north magnetic pole, which is a wandering point where the Earth's magnetic field goes vertically down into the planet
Explanation:
I searched it up lol
Convert 60000cm to m
Answers
Answer:
The answer is 600 using metric system
Answer:
600 cm
Explanation:
60,000 ÷100=600
A material has a low resistivity. Which statement is the best prediction about
this material?
A. It is a conductor that allows charge to move freely through it.
B. It is a conductor that does not allow charge to move freely through
it.
C. It it an insulator that does not allow charge to move freely through
D. It is an insulator that allows charge to move freely through it.
Please help fast
Answers
Answer:A
Explanation:I’m taking the test rn and I got it correct
It is a conductor that allows charge to move freely through it.
What is Resistivity?Resistivity is a distinctive attribute of any material that may be used to compare different materials based on how well they conduct electric currents. Low conductivity is indicated by high resistance.
The Greek letter rho is frequently used to represent resistance, which is numerically equivalent to the resistance R of a wire-like specimen, multiplied by its cross-sectional area A, and divided by its length.
The ohm is the measurement of resistance. The ratio of area in square meters to length in meters is reduced to merely meters in the metre-kilogram-second (mks) method.
Therefore, It is a conductor that allows charge to move freely through it.
To learn more about resistance, refer to the link:
https://brainly.com/question/29427458
#SPJ5
Formulas
Speed = distance / time
Time = distance / speed
Distance = speed x time
A bowling ball rolls 30 meters in 4 seconds. What speed did it travel?
distance = 30m
time = 45
speed = ?
Answers
Using s= d/t
7.5 m per second
= 30/45
= 6/9
= 2/3
= 0.666.........
Speed = 0.6
A 20 kg crate initially at rest on a horizontal floor requires a 80 N horizontal force to set it in motion. Find the coefficient of static friction between the crate and the floor.
Answers
Answer:
The coefficient of static friction between the crate and the floor is 0.41
Explanation:
Friction Force
When an object is moving and encounters friction in the air or rough surfaces, it loses acceleration and velocity because the friction force opposes motion.
The friction force when an object is moving on a horizontal surface is calculated by:
[tex]Fr=\mu N[/tex] [1]
Where [tex]\mu[/tex] is the coefficient of static or kinetics friction and N is the normal force.
If no forces other then the weight and the normal are acting upon the y-direction, then the weight and the normal are equal in magnitude:
N = W = m.g
The crate of m=20 Kg has a weight of:
W = 20*9.8
W = 196 N
The normal force is also N=196 N
We can find the coefficient of static friction by solving [1] for [tex]\mu[/tex]:
[tex]\displaystyle \mu=\frac{Fr}{N}[/tex]
The friction force is equal to the minimum force required to start moving the object on the floor, thus Fr=80 N and:
[tex]\displaystyle \mu=\frac{80}{196}[/tex]
[tex]\mu=0.41[/tex]
The coefficient of static friction between the crate and the floor is 0.41
A student moves a box across the floor by exerting 56.7 N of force and doing 195 J of
work on the box. How far does the student move the box?
A.3.4 m
B. 11,056 m
C.138 m
D.0.29 m
Answers
Answer:
A. 3.4 m
Explanation:
Given the following data;
Force = 56.7N
Workdone = 195J
To find the distance
Workdone is given by the formula;
[tex] Workdone = force * distance[/tex]
Making "distance" the subject of formula, we have;
[tex] Distance = \frac {workdone}{force} [/tex]
Substituting into the equation, we have;
[tex] Distance = \frac {195}{56.7} [/tex]
Distance = 3.4 meters.
Which type of friction opposes motion?
Answers
Answer:
Friction does not oppose motion, it oppose relative motion.
Explanation:
static friction opposes relative motion
Answer:
there are three types or friction
1) Static friction
2) Rolling Friction
3) Sliding friction
Static friction comes to end when the object starts moving(or starts motion ) so Sliding Friction and Rolling Friction opposes motion l.
How much work is done in lifting a 300 Newton rock 10 meters off the ground?
Answers
Answer:
3000 JExplanation:
The work done by an object can be found by using the formula
workdone = force × distance
From the question we have
workdone = 300 × 10
We have the final answer as
3000 JHope this helps you
Guys i need help please
Answers
Answer:
I'm pretty sure the answer is around 9.2 seconds
Explanation:
an arrow is shot horizontally at a target 5 meters away with a velocity of 5 m/s. the target and bow are both 3 meters above the ground. will the arrow fall short, hit the target head on, or go above and past the target and by how much
Answers
Answer:
okk pls mark brainlist
Which one is an example of a force pushing downward toward the ground.
Group of answer choices
A man pulled weeds in his garden
A woman moved her child from one place to another in a wagon
A bird sat on a telephone wire
A dog tugged on a rope held by a child
Answers
Answer: A woman moved her child from one place to another in a wagon
or A bird sat on a telephone wire
Explanation:
Point-source pollution enters water
A. from many different sites
B. from a specific location
C. slowly seeping through soil along pipelines
D. from unknown sources
Answers
How much force is needed to accelerate a 9,760 kg airplane at a rate of 4.4 m/s2?
Answers
Answer:
42,944
Explanation: 9,760 kg * 4.4 m/s2 = 42,944
A ray of light travelling obliquely from a rarer medium to a denser medium goes _______
Answers
Explanation:
towards the normal
MARK ME BRAINLIST
Please help!! I'll give brainliest and this is due tomorrow!!
What are two conservation practices that help prevent wind erosion?
plant barriers and plowed ridges in fields
setting up wind generators that absorb high winds
halting agriculture and planting native species
covering fields with tarps and building wind barriers
Answers
Answer:
The answer is building Wind Barriers
The reasoning is because irrigation, if used too much, causes water erosion. Planting crops deeper in the ground would would prevent the plants from being uprooted. Finally, terracing would prevent from run-off eroding the ground away from the plants.
Explanation:
Answer:
plant barriers and plowed ridges in fields
Explanation:
i had this in an exam and it was right!! =]
A component that is used to break a circuit is
(1 Point)
Wire
Switch
Bulb
Electric cell
Answers
3. A dog walks a distance of 100 ft. in 20 s of time. What is the dog's
speed in feet per second?
O C 120 ft/s
O B80 ft/s
O D 2000 ft/s
O A 5 ft/s
Answers
100/20=5
If you have a piece of brass and a piece of aluminurn that have the same volume, which will have a larger mass?
Answers
Answer:
the aluminum would have the most mass
Electric current passing through a wire produces _.
a
a magnetic field around the wire
b
a compass
c
geographic poles
d
a permanent magnet
Answers
A permanent magnet
not completely sure but i think so
Answer: Answer is A.
A magnetic field around the wire
Explanation: