Answer: Google: An electric bell is a mechanical or electronic bell that functions by means of an electromagnet. ... When an electric current flows through the coils, the electromagnet creates a magnetic field which pulls the armature towards it, causing the hammer to strike the bell.
In my words: An electric bell works with a function of electromagnet. When the electric current flows into the coils, the electromagnet makes a magnetic field that brings the aemature towards the magnentic feild. When this happend this cause the hammer to hit the bell. And this is how an electric bell works.
Explanation:
Answer:
"An electric bell is a mechanical or electronic bell that functions by means of an electromagnet. ... When an electric current flows through the coils, the electromagnet creates a magnetic field which pulls the armature towards it, causing the hammer to strike the bell."
Two cars approach one another on opposing lanes of a highway. Car 1 is traveling north at a velocity of 80 km/h and car 2 is traveling south at a velocity of 140 km/h. What is the magnitude of the velocity of car 1 relative to car 2?
Answer:
220 km/hr
Explanation:
A beam of charged particles moving with a speed of 106 m/s enters a uniform magnetic field of 0.1 T at right angles to the direction of motion. If the particles move in a radius of 0.2 m, then calculate their period of motion.
Answer:
The period of motion is 1.26x10⁻⁶ s.
Explanation:
The period of motion can be found as follows:
[tex] \omega = \frac{2 \pi}{T} [/tex]
Where:
ω is the angular speed
T is the period
The angular speed is related to tangential speed (v):
[tex] v = \omega r [/tex]
r is the radius
Hence, the period is:
[tex] T = \frac{2 \pi r}{v} = \frac{2 \pi 0.2 m}{10^{6} m/s} = 1.26 \cdot 10^{-6} s [/tex]
Therefore, the period of motion is 1.26x10⁻⁶ s.
I hope it helps you!
Using a streak test on a mineral that is harder than 7 on Mohs scale would not be very useful True or False
Fracture is the way minerals break along smooth planes of weakness. True or False
Cleavage is the way minerals break with uneven, jagged or rough surfaces True or False
The way light reflects off a mineral is called transparency. True or False
Minerals are the building blocks of rocks. True or False
Mohs scale measures a mineral’s streak. True or False
Color is the most reliable test for identifying a mineral. True or False
Answer: True true false true
Explanation:
Kristine wants to maesure the mass and volume of the key which tools should she use
A square boat with a mass of 544 g is placed in a tank of corn syrup. The corn syrup has a density of 1.36 g/mL. The boat has a base that measures 8 cm by 8 cm. How far will the boat sink into the corn syrup?
A. 4.17 cm
B. 6.25 cm
C. 8.50 cm
D. 11.56 cm
Answer:
B
Explanation:
Which refers to the density of the medium’s particles at the compression of a sound wave?
amplitude
pitch
volume
wavelength
Answer:
The answer is A
Answer:
A. amplitude
Explanation:
Please help science question
Answer:
it is moving left
Explanation:
State the following forms of electromagnetic radiation in increasing order of wavelength.
Radiowaves, gamma rays, x-rays, infrared radiation, visible light
Answer:
Gamma rays, x-rays, visible light, infrared radiation and radiowaves
Explanation:
Gamma rays, x-rays, ultraviolet, visible light, infrared radiation, microwave and radiowaves
1. A rock is falling downwards at 12.0 m/s. After 2.0 seconds it is falling at downwards at
31.6 m/s. What was its acceleration?
Answer:
a = 9.8 m/s²
Explanation:
Here, we will use the first equation of motion to determine the acceleration of the falling rock. The first equation of motion is written as follows:
Vf = Vi + at
where,
Vf = Final Velocity of the falling rock = 31.6 m/s
Vi = Initial Velocity of the falling rock = 12 m/s
a = acceleration = ?
t = time interval = 2 s
Therefore,
31.6 m/s = 12 m/s + a(2 s)
a = (31.6 m/s - 12 m/s)/(2 s)
a = 9.8 m/s²
Given:
Final velocity, [tex]V_f = 31.6 \ m/s[/tex]Initial velocity, [tex]V_i = 12 \ m/s[/tex]Time, [tex]t = 2 \ seconds[/tex]We know the relation,
→ [tex]V_f = V_i +at[/tex]
By substituting the values,
[tex]31.6 = 12+a(2)[/tex]
[tex]a = \frac{31.6-12}{2}[/tex]
[tex]= \frac{19.6}{2}[/tex]
[tex]= 9.8 \ m/s^2[/tex]
Thus the answer above is correct.
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On a hot day, you sit on the edge of a pool and dip your feet into the water, causing changes to occur that are
related to the physical and thermal properties of your feet and of the water. Select the statements that
accurately describe what is happening, in terms of the heat and temperature of the objects and substances.
There may be more than one accurate statement.
A. Cold from the water reduces the temperature of your feet.
B. Heat from your feet raises the temperature of the water.
C. Your feet transfer heat into the surrounding water, reducing the temperature of your feet.
D. Cold from the water moves into your warm feet.
Answer:
B and D
Explanation:
The movement of kinetic energy from one media or item to another, or from an energy source to a medium or object, is referred to as heat. The correct statements are B and C.
What is Heat?The movement of kinetic energy from one media or item to another, or from an energy source to a medium or object, is referred to as heat. Energy may be transferred in three ways: radiation, conduction, and convection.
The statement that is correct in terms of heat and temperature are:
B. Heat from your feet raises the temperature of the water.
C. Your feet transfer heat into the surrounding water, reducing the temperature of your feet.
These two statements are correct because two statements out of four are stating about heat transfer is due to temperature difference.
Hence, the correct statements are B and C.
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A 1.50-m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a constant potential difference of 15.0 V across its ends, while an ammeter measures the current through it. We observe that at room temperature (20.0°C) the ammeter reads 18.5 A, while at 92.0°C it reads 17.2 A. We can ignore any thermal expansion of the rod. Find
a. the resistivity at 20.0°C and
b. the temperature coefficient of resistivity at 20.0°C for the material of the rod.
Answer:
a) 1.06*10^-5
b) 0.00105 °C^-1
Explanation:
Given that
Length of the cylinder, L = 1.5 m
Radius of the cylinder, r = 0.25 cm
Voltage across the rod, V = 15 V
I• at Temperature T• = 20° C is 18.5 A
I at Temperature T = 90° C is 17.2 A
See attachment for calculations
a ball is thrown straight upward with an initial velocity of 8 m/s. the magnitude of the final velocity of the ball is
A. 0 m/s
B. 4 m/s
C. 8 m/s
D. 16 m/s
Assuming no air restance the speed when the ball comes back to the starting point will be again 8ms but directed DOWNWARDS; we can express this by saying that it will equal to −8ms adding a minus to indicate the downward direction.
To find the time of flight we use:
vf=vi+at
Where:
a is the acceleration of gravity (downwards, −9.8ms2);
vi=+8ms
vf=−8ms
So, we get:
−8=8−9.8t
−16=−9.8t
t=169.8≈1.6s
The answer is "B"
Answer link
My body is not just something that I have, my body is also I am.
Answer:
OK IS THERE A ANSWER TO THIS
Explanation:
A force of 20 N is inclined at 30 degrees to the X axis. What are X and Y components of the force?
Answer: 10 root 3 N, 10N
Explanation:
Scientists often work on projects for a long time and fail to see sources of error in their research. Which process allows an outside expert to look at the scientist's project and point to sources of error?
Answer:
Peer Review
Explanation: I took the test
Please tell me which on it is!
Answer
.0003
Explanation:
PLEASE HELP GIVING 15 P
Answer:
can you make the pic more clear
i think it's D
A 3-column table with 4 rows. The first column titled substances has entries aluminum, zinc, chromium, nickel. The second column titled density has entries 2.70 grams per centimeter cubed, 7.13 grams per centimeter cubed, 7.18 grams per centimeter cubed, 8.90 grams per centimeter cubed. The third column titled mass has entries 4.60 grams, 9.81 grams, 6.24 grams, 3.17 grams.
Use the information in the table to identify the metal with a volume of 1.38 cm3.
aluminum
zinc
chromium
nickel
Answer:rhe answer is zink
Explanation:i got he anwer rong and it say that one was right it is in ed geunity :)
Answer:
The answer is Zinc on Edegenuity.
Explanation:
Which formations are created by wave erosion?
a) Barrier beaches
b) Sandbars
c) Spits
d) Stacks
Answer:d) Stacks
Explanation: A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave erosion. Stacks are formed over time by wind and water, processes of coastal geomorphology.
A magnet was cut in half to form the pieces shown. Which image best represents the original magnet?
IT'S OPTION A!!
Answer : The correct option is (A).
Explanation :
As we know that a magnet is an object which produces an invisible magnetic field and attract metals like iron, nickel, cobalt.
The magnets have two poles that is a north pole and a south pole.
If you take a magnet and cut a magnet in half then two pieces would separate and form new sets of poles. That means, when we cut a magnet of south-north pole then it gives two pieces of magnet like south-north and south-north pole.
From the given options we conclude that the option A is the representation of original image of magnet.
Hence, the correct option is (A).
Answer:
A
Explanation:
IMAGE
Please Help:)
How to draw two vectors being added:
Explanation:
you add the from head to tail. Head is the triangle and tail is the final point of the vector
ANSWER NOW PLS
Given the following images, choose the one that most likely represents an M-class star.
Star A is a yellow star. Star B is a blue star. Star C is a red star. Star D is a green star.
A
B
C
D
A person in a lab wants to make a car accelerate faster. Should the person:
O decrease the mass
o increase the mass
O lower the force
Answer:
Decrease the mass.
Explanation:
By Newton's Second Law we know that net force exerted on a given system equals the rate of change of linear momentum ([tex]P[/tex]) in time.
[tex]F = \frac{dP}{dt}[/tex] (Eq. 1)
When mass of the system has a constant mass, this net force ([tex]F[/tex]) is reduced to its mass ([tex]m[/tex]) multiplied by acceleration ([tex]a[/tex]):
[tex]F = m\cdot a[/tex] (Eq. 2)
If we keep net force exerted on system constant, then a decrease on mass is compensated by an increase in acceleration. Hence, correct answer is: Decrease the mass.
A force that tends to pull an object towards the center of the earth is?
Explanation:
Gravitational force
A positron is a particle similar to an electron, but with the opposite charge of an electron. If a positron and an electron collide, sometimes both the electron and positron disappear, and two photons are created. This is an example of A positron is a particle similar to an electron, but with the opposite charge of an electron. If a positron and an electron collide, sometimes both the electron and positron disappear, and two photons are created. This is an example of potential energy:
a. being converted into thermal energy.
b. rest-mass energy being converted into kinetic energy.
c. kinetic energy being converted into rest-mass energy.
d. rest-mass energy being converted into radiative energy.
Answer:
The answer is "Option d".
Explanation:
If we assume the sum of energy which could be obtained by completely transforming a volume unit, m. Its compared to the speed of light throughout this link. In that situation, the whole mass of its electron becomes power. In this, each electron should produce 510 keV depending on Einstein's connection, that's why only the choice "d" is correct.
How does increasing the amount of charge on an object affect the electric force it exerts on another charged
object?
The electric force increases because the amount of charge has an indirect relationship to the force.
The electric force increases because the amount of charge has a direct relationship to the force.
The electric force decreases because the amount of charge has an indirect relationship to the force.
The electric force decreases because the amount of charge has a direct relationship to the force.
Answer:
the electric force increases because the amount of charge has a direct relationship to the force
Increasing the amount of charge on an object will increase the electric force it exerts on another charged object because the amount of charge has a direct relationship to the force. Therefore, option (B) is correct.
How to calculate the charge on an object?Mathematically, the amount of charge on an object due to the effect of the force that is exerted on it can be calculated by using the formula mentioned below:
F = E×q
Where F is the electric force, E is the energy, and q is the charge.
The electric force between charged particles at rest is known as electrostatic force. The magnitude of the electric force between point charges is directly proportional to the multiplication of the charges and inversely proportional to the distance between them.
Therefore, increasing the amount of charge on an object would increase the electric force because the amount of charge has a direct relationship with the force.
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What happens when a proton is placed directly in the path of the proton cannon?
Answer:coherent light
Explanation:
In 1 second how many kilometers does light can travel
Answer:
299,792 kilometers
Explanation:
Light travels at a speed of 299,792 kilometers per second; 186,287 miles per second.
Answer:
299,792
Explanation:
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A box of oranges with a weight of 96 N is being pushed across a horizontal floor. As it moves, it is slowing at a constant rate of 0.90 m/s each second. The push force has a horizontal component of 20 N and a vertical component of 25 N downward.
Required:
Calculate the coefficient of kinetic friction between the box and floor.
Answer:
μk=0.24Explanation:
Please see attached a detailed drawing of the force and line diagram for your reference.
Given data
weight W=96N
Fx=20N
Fy=25N
acceleration a= -0.9m/s^2----slowing down indicate negative
W=mg= 96N
Fk= kinetic friction= μkN
where N= normal reaction
from newtons second law
F=ma
x-----Fx-Fk=ma
Fk=Fx-ma
y----N-Fy-W=0
N=25+96
N=121N
so
Fx-μkN=ma
20-μkN=(96/9.81)-0.9
20-μkN=-86.4/9.81
20-μkN=-8.80
-μkN=-20-8.8
μkN=20+8.8
μk=28.8/N
μk=28.8/121
μk=0.238
μk=0.24
A 45 Kg object is given a net force of 500 n what is its approximate acceleration
The acceleration of the object is 11.11 m/[tex]s^2[/tex] (approximately).
What is acceleration?The rate of change of velocity of a body with respect to time is known as acceleration. Due to having both magnitude and direction, it is a vector quantity having SI unit m/s^2.
Given parameter,
The mass of the object, m = 45 Kg.
Net force acting on the object, F = 500 N.
Acceleration of the object, a= ?
From Newton's 2nd law of motion,
Force = mass × acceleration
⇒ F = ma
⇒ a = F/m
= 500 N /45 Kg
= 11.11 m/s^2. (approximate)
Hence, the approximate value of acceleration of the object, a = 11.11 m/s^2.
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