Answer:
(a) An electric iron works on the heating effect of electric current
(b) The heating effect of an electric current is the tendency for electric current to cause the temperature of the material through which it is flowing to rise due to the resistance of the material
The heating effect, 'E', is given by the formula, E = I²·R·t
Where;
I = The current flowing
R = The resistance of the material
t = The time the material takes to heat up
(c) The values showed by Pinki here is the value of care, concern and prevention, to prevent the harmful effect of the high heat on the skin of her daughter
Explanation:
Need help with this one question!
Answer:
Actual Mechanical Advantage
Explanation:
AMA=mg/F(applied)
what is a possible explanation for a set of facts that can be tested by further investigation called?
1. Questions
2. Hypothesis
3. Experiment
4. Summary
Answer:
Hypothesis.
Explanation:
Not a question, not a summary, and not an experiment.
What happens to the arrangement of atoms in matter as it is heated?
Answer:
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance.
Explanation:
How are defenders on a baseball team positioned ?
Answer:
1 (pitcher), 2 (catcher), 3 (first baseman), 4 (second baseman), 5 (third baseman), 6 (shortstop), 7 (left fielder) 8 (center fielder), and 9 (right fielder)
Explanation:
There are nine fielding positions in baseball. Each position conventionally has an associated number, for use in scorekeeping by the official score
a wagon of mass 42 kg is pushed by a student a distance of 12.2 meters, and 297 j of work was sone on the wagon how much force did the student apply assuming that it was constant
Answer:
Force=2.484 N
Explanation:
[tex]f = \frac{w}{gh} \\ = \frac{297}{9.8 \times 12.2} \\ f = 2.484 \: n [/tex]
Hope it helped
PLS mark BRAINLIEST
A wagon of mass 42 kg is pushed by a student a distance of 12.2 meters, and 297 j of work was done on the wagon force did the student apply is 24.34 N.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
work = force*distance
force = work/distance
force = 297/12.2
force = 24.34 N
A wagon of mass 42 kg is pushed by a student a distance of 12.2 meters, and 297 j of work was done on the wagon force did the student apply is 24.34 N.
To learn more about force refer to the link:
brainly.com/question/13191643
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A 1400-kg car is moving at a speed of 35 m/s. How much kinetic energy does the car have (in Joules)?
Answer:
857.5Kjoules
Explanation:
Using K. E=1/2 Mv^2
=1/2x1400x35x35
=857500joules
=857.5KJ
the thumb is what to the phalanges?
Answer:
A thumb only has one joint and two phalanges. The thumb is referred to as “the big finger".
Brainlist pls!
CAN A BRAINLEST HELP PLEASE!!!
The diagram below represents a rope along which
two wave pulses of equal amplitude, A, approach
point P
Can someone answer this form me i need help!!!
Which law best describes this behavior of gases in the Sun?
Answer:
The extreme pressure from the weight of the gases that make up the Sun raises the temperature of the core enough for the nuclear reactions to take place, Which law best describes this behavior of gases in the Sun? A. Charles law.
Explanation:
if it is helpful....... plzz like and follow
Explain the different types of energy in a working wind turbine
Answer:
A wind turbine converts the kinetic energy of the wind into mechanical power.
The wind moves the turbine and the turbine produce energy.
how can understanding velocity help to prevent a mid-air collision
Answer:
To maintain enough time to prevent a collision, a system operating in air traffic where aircraft speed does not
fall below 100 km/h (most medium-sized UAVs and GA aircraft) will need to be able to detect obstacles which
subtend an arc-width of as small as 0.125 mra
Which of these actions would increase heat transfer between two objects?
establishing their thermal equilibrium
increasing the area of their contact
using objects with similar specific heats
reducing the time of their contact
Answer:
b
Explanation:
increasing the area of their contact.
BTS ARMY
Answer: B.) increasing the area of their contact
Explanation: i hope this helps :)
For an object falling at the terminal velocity, list all the forces (magnitude and direction) acting it?
Answer:
Three stages of falling
There are three stages as an object falls through a fluid:
at the start, the object accelerates downwards due to the force of gravity
as the object's speed increases, frictional forces such as air resistance or drag increase
at terminal velocity, the weight of the object due to gravity is balanced by the frictional forces, and the resultant force is zero
Explanation:
If a car used 250,000 W of power to complete a race in 12 s, how much work did the car do?
Answer:
3,000,000 Joules!
Explanation:
power=work/t
250000=work/12
work=3,000,000 Joules
Does distance play a role in the magnetic field ?
The Escape speed at the surface of a certain planet is twice that of the earth. what is its mass in unit of earth's mass?
Plzz help
Answer:
22Km/sec
Explanation:
Why does the first row in our periodic table
only have two elements?
A) because each orbital in every sub-level only holds
two electrons
B) because Bohr only knew about two elements
C) because the first energy level only holds two
electrons total
Help me plssss
Answer:
B
Explanation:
♡ ∩_∩
（„• ֊ •„)♡
┏━∪∪━━━━┓
Hopes this helps
♡ good luck 。 ♡
┗━━━━━━━┛
Answer:
C option is correct
Explanation:
C) because the first energy level only holds two electrons.
How would a weaker jet stream help to cause extreme flooding?(1 point)
Answer:
It would allow storm systems to stall in an area.
Answer: A weaker jet stream would allow storm systems to stall in one area.
What phase of matter are the particles least energetic, most dense, and best organized?
A. Plasma
B. Gas
C. Liquid
D. Solid
Name two devices we use generators in. Describe how they work.
Answer:
There are two fundamental types of generators known as AC (alternating current) and DC (direct current) generators. While the technique of producing electricity is the same in both types, AC and DC power become different in terms of their applications – the way in which loads receive electric power.
Explanation:
An electric generator is a device that converts mechanical energy obtained from an external source into electrical energy as the output. ... Instead, it uses the mechanical energy supplied to it to force the movement of electric charges present in the wire of its windings through an external electric circuit.
A(n) ________________________ is a substance that slows down a chemical reaction.
endergonic
exergonic
exothermic
inhibitor
endothermic
Answer:
inhibitor
Explanation:
Inhibitors slow down chemical reactions. Inhibitors slow down or stop the activity of an enzyme.
Recall: earth applies _____________ on Earth or equivalently
Answer:
gravitational attraction
A sharpening wheel is traveling at 5 rad/s, it slows down to rest in 30 seconds while sharpening an axe. What is its angular acceleration?
Answer:
Angular acceleration [tex]= 0.167[/tex] rad/s^2
Explanation:
Given
Initial Angular velocity (w1) [tex]= 5[/tex] rad/s
Final Angular velocity (w2) [tex]= 0[/tex] rad/s
Time taken to change velocity from w1 to w2 [tex]= 30[/tex] seconds
Angular acceleration is equal to the change in angular velocity to the time taken for making thing change
Hence, Angular acceleration
[tex]\frac{w_2 -w_1}{t} \\\frac{5-0}{30}\\0.167[/tex]rad/s^2
A weightlifter lifts a set of weights a vertical distance of 2.0 m. If a constant net force of 350 N is exerted on the weights, what is the net work done on the weights?
Answer:
700 Joules
Explanation:
The work done equals force times distance. Just multiply your two values there.
Side note: It would be more impressive if he'd done it in 1 second rather than 5. You know why? Because POWER=WORK/TIME. The less time it takes him to lift the weight with the same force and distance, the more powerful he is!
A box weighs 25N. How much mass does it have?
Explanation:
If box weight 25N on ground
MA=F
M(10)=25
M=2.5Kg
What happens to particles of a substance as its temperature increases? A the average kinetic energy increases B the average kinetic energy decreases C the average kinetic energy stays the same D nothing happens
PLEASE HELLP ILL GIVE BrAINLY AND HEART
you are visiting a town that is in the middle of a large continent. How would you expect the ocean currents to effect the climate in the town?
A ) More Thunderstorms
B ) Cooler Temperatures
C ) Warmer Temperatures
D ) There is little effect on the town's climate
Answer:
D
Explanation:
What is the first step in cell division?
Daughter cells create copies of their components.
Daughter cells grow in an unregulated fashion.
Parent cells are created from daughter cells that split.
Parent cells create copies of their components.
Answer:
d
Explanation:
Answer:
D.)
Parent cells create copies of their components.
Explanation:
edge2021
Gizmo uniform circular motion