Answer:
What about Newton's law of gravity.
Explanation:
The one with the apple falling on his head.
Student A says electric motors use the forces between electromagnets to make something start turning. Student B says electric motors use magnets moving near coils of wire to create a current in the wire. Which student is correct?
Answer:
Student A is correct.
Explanation:
An electromagnet can be defined as the magnet that is produced by the electric current passing through a wire surrounding a metal piece. In an electric motor, magnets surrounds the the coil carrying currents. Because of the magnetic field, the current carrying coil experiences a force and it starts to rotate. Thus the electric motors uses the forces between the electromagnets to start running.
Therefore, student A is correct.
What is the current in a circuit if 3.50 C of charge passes any given point in a circuit in 1.80 s?
Answer:
I = 1.944 A
Explanation:
Given the following data;
Charge, Q = 3.5C
Time, t = 1.8 secs
Charge of a substance is given by the formula;
[tex] Q = It[/tex]
Where;
Q is the amount of charge measured in Colombs.
I is the current measured in Amperes.
t is the time measured in seconds.
Making I the subject of formula, we have
[tex] I = \frac {Q}{t} [/tex]
[tex] I = \frac {3.5}{1.8} [/tex]
I = 1.944 A
Therefore, the current in the circuit is 1.944 Amperes.
b. Both cars passed a gas station 120km from the school. When did each car pass the gas
station?
Pweese help one more timeeee
pweese look at the image below
Answer:
1. 50 meters
2. average velocity (?)
Explanation:
Vot + 1/2 at^2
= 0 (10) + 1/2(1)(10)^2
= 0 + 1/2 (1)(10)^2
= 1/2 (1) (100)
= 1/2 (100)
= 50
Write down the characteristics of images formed
when an object is kept at the center of curvature of
concave mirror.
Explanation:
When the object is placed at centre of curvature (C) of a concave mirror, a real and inverted image is formed at the same position. Properties of image: Same size of object.
A dumbell has a mass of 95 kg. What force must be applied to accelerate it upward at 2.2 m/s?
Answer:
f= mass/acceleration
Explanation:
f= 95/2.2
Whom do you feel empathy for ? Why ?
In the demolition of an old building, a 1,300 kg wrecking ball hits the building at 1.07 m/s2
Calculate the amount of force at which the wrecking ball strikes the building.
The wrecking ball strikes the building with a force of
1,324
N.
Answer:
4
Explanation:
TRUST ME AND I AM SORRY IF RONG
Answer:
The real answer should be 1391. Considering the mass x acceleration
1000 kg car takes travels on a circular track having radius 100 m with speed 10 m/s. What is the minimum coefficient of static friction between tires and track needed to keep the car on circular path.
Answer:
μ = 0.1
Explanation:
In order to keep the car on circular track, the centripetal force must be equal to the frictional force between tires and track:
Frictional Force = Centripetal Force
μmg = mv²/r
μ = v²/gr
where,
μ = coefficient of friction = ?
v = speed of car = 10 m/s
g = 9.8 m/s²
r = radius of track = 100 m
Therefore,
μ = (10 m/s)²/(9.8 m/s²)(100 m)
μ = 0.1
A light with a second-order dark band forms a diffraction angle of 20.0 degrees. The diffraction grating has 200.0 lines per mm. The wavelength of the light, to the nearest whole number, is _____ nm.
Answer:
The value is [tex]\lambda = 684 \ nm[/tex]
Explanation:
From the question we are told that
The order of the dark fringe is m = 2
The diffraction angle is [tex]\theta = 20^o[/tex]
The diffraction grating is [tex]l = 200\ lines\ per\ mm \ = \ 200000\ lines\ per\ m[/tex]
Generally separation between the slits is mathematically represented as
[tex]d = \frac{1}{ 200000}[/tex]
=> [tex]d = 5 *10^{ -6} \ m[/tex]
Generally the condition for destructive interference is mathematically represented as
[tex]dsin(\theta ) = (m - \frac{1}{2} ) \lambda[/tex]
=> [tex]5 *10^{-6} sin(20) = [2 + \frac{1}{2}] * \lambda[/tex]
=> [tex]\lambda = 684 *10^{-9} \ m[/tex]
=> [tex]\lambda = 684 \ nm[/tex]
Which of the following objects will have the greatest inertia?
Question options:
10 m
10 J
10 N
10 kg
Answer:
The proximate answer pertaining to your question entails 10 kg.
Justification:
The statement implies which of the following units preceded by the value of 10 will obtain substantial inertia.
Exploiting conversions, this can be evinced/demonstrated:
Choice "10 m" => .01 kg
10 J ==> 0.10
10 N ==> 1.02 kg
10 kg ==> 10 kg
Thus, an object obtaining a cumulative mass of 10 kg obtains substantial inertia.
*Hope this helps*How do molecules behave in a solid?
Answer:
In the solid state particles are held closely together and vibrate slightly. They exist in a regular arrangement - there is no regular arrangement in the other states.
Answer:
The motion and vibration of the atoms pull the individual molecules apart from each other
Explanation:
:)
ILL ADD BRAINLIEST
Match the biomes with the corresponding animals, vegetation, or geographic location.
forest at highest latitudes:
prairies/ temperate climate:
high humidity and rainfall/ near equator:
no trees/ polar bears/ mosses:
<25cm rain/ few animals:
mostly small mammals/ many scrubs/ steppes:
abundant thick vegetation/ many species:
hardwood trees/ deer, squirrel, foxes:
This is kinda confusing. I wish u just to a screenshot of the problem but here goes...
Forest at highest latitudes- Hardwood trees/deer, squirrel, foxes
Praries/temperate climate- Mostly small mammals/scrubs/steppes
High humidity/rainfall near equator- Abundant thick vegatation/manny species
No trees/ polar bears/ mosses- 25cm rain/few animals
A 49 N coconut is in a 15 m tree. What is te potential energy of the coconut?
PE= mgh-wh
g9.8 m/s
Answer:
735 J
Explanation:
From the question given above, the following data were obtained:
Weight (W) = 49 N
Height (h) = 15 m
Potential energy =?
Potential energy is simply defined as the product of weight of the object and height to which the object is raised. Mathematically, it is expressed as:
Potential energy = weight × height
With the above formula, we can obtain the potential energy of the coconut as follow:
Weight (W) = 49 N
Height (h) = 15 m
Potential energy =?
Potential energy = weight × height
Potential energy = 49 × 15
Potential energy = 735 J
Thus, the potential energy of the coconut is 735 J
As a general rule, women __________.
A. are more flexible than men
B. are less flexible than men
C. are as flexible than men
D. are flexible in different ways than men
Answer:
a
Explanation:
What is the primary difference between static and ballistic stretching? Do you see this as being beneficial or potentially harmful? Why?
What is the velocity of an object that travels south 6.9m in 3 seconds?
Answer:
oke
Explanation:
v=d\t
=6.9\3
=2.3m\s
How much work do you do when you lift a 100 N child 0.5 m?
Answer:
50 JExplanation:
The work done by an object can be found by using the formula
workdone = force × distance
From the question we have
workdone = 100 × 0.5
We have the final answer as
50 JHope this helps you
PLZ HELP ME I BEG YOU :(
The chemical composition and crystal structure of a mineral gives it unique characteristics.
True OR False
Explain the importance of having a support network when trying to achieve a healthy lifestyle. Who supports you when it comes to making healthy nutrition and exercise choices? Do you have a role model you look up to when it comes to fitness? What do you have to do in order to become a role model for your community members?
(essay)
Answer:
Who are the people for you then I can help you format the essay
Explanation:
What is the time period of a pendulum which oscillates 20 times in 2 seconds?
Explanation:
The pendulum oscillates 10 times in 1 second.
Thus the frequency is 10 Hz
Now the time period will be 1/f = 1/10 = 0.1s
The main difference between obsessive-compulsive personality disorder (OCPD) and obsessive-compulsive disorder (OCD) is that __________.
people with OCPD know their disorder is irrational
people with OCD know their disorder is irrational
OCPD is an anxiety disorder consisting of disturbing thoughts
OCD is a mood disorder consisting of disturbing behaviors
Answer:
B. people with OCD know their disorder is irrational
Explanation:
Got it right
Answer:
B
Explanation:
Edge2021
Unit for Gravitational Potential
Answer:
J/kg
Explanation:
The unit of gravitational potential is J/kg.
Gravitational potential is the amount of energy needed to bring a unit mass of charge from an external point to that field.
The difference between the point and that of zero potential is the gravitational potential. It is gravitational potential energy per unit mass. The symbol is V.Maria is camping when she starts to smell smoke. She turns on her radio and hears that a forest fire is heading her way. How can Maria's organ systems interact to help keep her safe? Include at least five organ systems in your response.
The hormonal, cardiovascular, central nervous and respiratory systems are all involved in this response.
The body is equipped to respond to emergency situations through the fight and flight hormones secreted by the adrenal gland. This chemical messengers send a message to the brain which now causes reactions such as increased pumping of blood by the heart and a faster breathing rate by the lungs.
Hence, the hormonal, cardiovascular, central nervous and respiratory systems are all involved in this response.
Learn more about hormonal system: https://brainly.com/question/5333884
Example 1: Two physics students, Ben and Bonnie, are in the weightlifting room. Bonnie lifts the 50kg barbell
over her head (approximately .60 m) 10 times in one minute; Ben lifts the 50 kg barbell the same distance over his
head 10 times in 10 seconds.
o Which student does the most work?
O
Which student delivers the most power?
Answer:
Same
Ben.
Explanation:
m = Mass Bonnie and Ben lift = 50 kg
s = Displacement of mass by both the students = 0.6 m
Work done by both the student is
[tex]W=Fs\\\Rightarrow W=10\times 50\times 0.6\\\Rightarrow W=300\ \text{J}[/tex]
The amount of work done by both the students will be equal to 300 J.
[tex]t_1[/tex] = Time taken by Bonnie = 1 minute = 60 seconds
[tex]t_2[/tex] = Time taken by Ben = 10 seconds.
Power delivered by Bonnie
[tex]P=\dfrac{W}{t_1}\\\Rightarrow P=\dfrac{300}{60}\\\Rightarrow P=5\ \text{W}[/tex]
Power delivered by Ben
[tex]P=\dfrac{W}{t_2}\\\Rightarrow P=\dfrac{300}{10}\\\Rightarrow P=30\ \text{W}[/tex]
So, power delivered by Ben is more.
Once the causes of a problem with a product are identified, the next step is to
a.
communicate the solution.
b.
identify a need.
c.
redesign the product.
d.
build a prototype.
a. communicate the solution
Alcohol consumption slows people's reaction times.In a controlled government test,it takes a certain driver 0.320 s to hit the brakes in a crisis when unimpaired and 1.00 s when drunk.When the car is initially traveling at 90km/h,how far does the car travel before coming to a stop when the person is drunk compared to sober?
Answer:
When the person is drunk the car travels 20.1 meters more than when the person is sober. The distance traveled by car is:
Person drunk: 28.1 m
Person sober: 8 m
Explanation:
The distance traveled can be found using the following equation:
[tex] v = \frac{x}{t} \rightarrow x = v*t [/tex]
Where:
v: is the speed = 90 km/h
t: is the time
When the person is sober, the time that takes to hit the brakes is 0.320 s, so we have:
[tex] x = v*t = 90 \frac{km}{h}*\frac{1 h}{3200 s}*0.320 s = 8 \cdot 10^{-3} km = 8 m [/tex]
And when the person is drunk, the time is 1.00 s, hence the distance is:
[tex] x = v*t = 90 \frac{km}{h}*\frac{1 h}{3200 s}*1 s = 0.0281 km = 28.1 m [/tex]
The distance traveled by the car when the person is drunk compared when the person is sober is:
[tex] d = 28.1 m - 8 m = 20.1 m [/tex]
Therefore, when the person is drunk the car travels 20.1 meters more than when the person is sober.
I hope it helps you!
HELP ASAP
This diagram shows Earth orbiting the Sun?
At position B in the Northern Hemisphere it would be which season?
A. winter
B. fall
C. summer
D. spring
Answer:
B
Explanation:
A is summer, C is winter, B should be fall in-between those 2
Joyce pushes Efua, whose mass is 40.0 kg, with the force of 5.0 N. What is Efua's resulting acceleration?
Answer:
[tex]a=0.125\ m/s^2[/tex]
Explanation:
Given that,
Mass of Efua, m = 40 kg
Force, F = 5 N
We need to find Efua's resulting acceleration. We know that the force acting on an object is given by :
F = ma
where a is acceleration
[tex]a=\dfrac{F}{m}\\\\a=\dfrac{5\ N}{40\ kg}\\\\a=0.125\ m/s^2[/tex]
So, the resulting acceleration is [tex]0.125\ m/s^2[/tex].
What is the difference between weight and mass? How does the differences affect real world problems?