Answer: D just took the test
Explanation:
Answer:
D
Explanation:
Plz help, will vote brainliest answer
We would like to make a 600-ohm resistor out of Nichrome wire with a cross-sectional area of 3.0 10-3 square centimeter. If the resistivity of Nichrome is 110 × 10-6 ohm-centimeter, how long should the wire be?
l = AR/ resistivity
A = 3 × 10^-3 square centimeter
R = 600 ohms
resistivity = 110 × 10^-6 ohmh centimeter
substitute the values in the formula and find l
After this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. The bird repeats the back and forth trips until the runner reaches the finish line. How far does the bird travel from the beginning (including the distance traveled to the first encounter)? Answer in units of km
Answer:
The appropriate answer will be "8.378 km".
Explanation:
The subsequent trip device runner hits B by repeating the bird. Then the time taken by that of the runner around P to hit B would be:
⇒ [tex]P=\frac{1.2556}{7.3}[/tex]
[tex]=0.172 \ hr[/tex]
Although in this time bird has always been perpetually flying.
Distance covered by bird even before runner approach from P to B will indeed be:
= [tex]29.2\times 0.172[/tex]
= [tex]5.0224[/tex]
Apart from the first encounter, the overall distance traveled by bird would be:
= [tex]5.0224+3.3556[/tex]
= [tex]8.378 \ km[/tex]
How do electromagnetic and mechanical waves compare?
A rock is thrown downwards from the edge of the Grand Canyon. With
what velocity will it hit the donkey-riding tourist who is 40 m below?
Answer:
Vf = 28 m/s
Explanation:
In order to find the final velocity of the rock, we will use the 3rd equation of motion. The third equation of motion for vertical direction is written as follows:
2gh = Vf² - Vi²
where,
g = acceleration due to gravity = 9.8 m/s²
h = height dropped = 40 m
Vf = final velocity of the rock = ?
Vi = Initial Velocity of the rock = 0 m/s (since, rock was initially at rest)
Therefore,
(2)(9.8 m/s²)(40 m) = Vf² - (0 m/s)²
Vf = √(784 m²/s²)
Vf = 28 m/s
water is used in hot water bag why
Answer:
Explanation:
Water has highest specific heat compared to other liquids , therefore water gives out largest amount of heat for a fixed temperature change , as compared to other liquids i.e. it cools down slowly than any other liquid . Hence used in hot water bags so that bag remains hot for a long time .
During a race, you speed up from 2.5 m/sec to 4.4 m/sec in 3.4 seconds.
(a) What is your change in speed?
1.9
m/sec
(b) What is your acceleration?
0.55
X m/sec2
7. What is the highest and lowest number of students?
Answer:
0 and ∞
Explanation:
Answer:
-∞ and ∞
Explanation: numbers dont have boundaries
Which of these could increase average global temperatures?
A. increased ocean algal blooms
B. increased numbers of animal species
C. increased use of fossil fuels
o
D. decreased carbon dioxide emissions
Answer:
C.increased use of fossil fuels
YO CAN ANYONE PLS ANSWER DIS PLS!!!!!!!!
Answer:
38ml
Explanation:
Answer:
38 ML
Explanation:
How can fluid friction be decreased?
Answer: by giving special shapes called streamlined shape to the objects
Explanation:
If the light bulb is 2 ohms and the battery is 3V what is the total current in the circuit?
Answer:
3 volts / 2 ohms =1.5 Amperes
what is the slope of this blue line
Gradient of the line is m =-2/5
Answer:
y = x-2
Explanation:
When x = 0, y = 4
When y = 0, x = 6
Alberto is on his daily commute. While texting, his car veers of the road and hits a tree, coming to a complete
halt. As state law required, he was wearing a seatbelt, and walked away from the accident uninjured. Use the
concepts of momentum, kinetic energy, and force to explain why Alberto was able to walk away from the
Accident.
Answer:
Please find the answer in the explanation below.
Explanation:
Given that Alberto is on his daily commute. While texting, his car veers of the road and hits a tree, coming to a complete halt. As state law required, he was wearing a seatbelt, and walked away from the accident uninjured.
To use the concepts of momentum, kinetic energy, and force to explain why Alberto was able to walk away from the accident,
According to the Newton's second law of motion, the rate of the change in momentum is proportional to the force applied. that is,
F = ma
where
F = the force that caused the car to accelerate
m = mass of the car
a = the acceleration of the car.
As the car accelerated, the kinetic energy produced caused the car to hit the tree.
But according to the Newton's third law of motion, which state that;
in every action, there will be equal and opposite reaction.
The seat belt provided the reaction opposite to the action produced by the force. Which eventually halt the Kinetic energy of the person and prevented him from being getting injured.
Alberto was able to walk away from the accident because he had his seat belt on according to Newton's first law.
According to Newtons's first law of motion, an object will continue in its state of rest or uniform motion unless it is acted upon by an external, unbalanced force. This law is the reason why a passenger quickly moves forward when a car stops suddenly.
Alberto was able to walk away from the accident because he had his seat belt on which prevented him from being thrown out of the windscreen. The momentum and kinetic energy of the car is not conserved because the car sticks with the tree.
Learn more: https://brainly.com/question/14191541
this is my exam question be serious
a. what are professions and manpower related to teaching field? describe any one
b. write the name of any four diseases that attack on cows and buffaloes. explain any two of them
c. "modern technology is developed from ancient technology."justify this statement.
Answer:
hey answer in the comment section
1. List the point where the car has the greatest potential energy.
2. List the point where the car has the least potential energy.
3. List the point where the car has the greatest kinetic energy.
4. List the point where the car has the least kinetic energy.
Answer:
1) The point where the car has the greatest potential energy is Point A
2) The point where the car has the least potential energy is Point C
3) The point where the car has the greatest kinetic energy is Point C
4) The point where the car has the greatest kinetic energy is Point A
Explanation:
The potential energy of the car is given by the formula, PE = Mass × Gravity × Height
Therefore, as the height increases, the potential energy of the car increases
The total mechanical energy of the car, which is constant, is given by the following equation
The total mechanical energy = The Potential Energy + The Kinetic Energy
Therefore, at the point where the potential energy is lowest, the kinetic energy is highest.
Explain why the roller coaster’s potential energy is greater at point 1 than at point 4.
Answer:
Answer: 1/17/2020
Potential energy is directly related to the height of an object. Point 1 is higher than point 4, so the potential energy is greater at point 1.
Hope this helps! ~lexi
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As you add heat, what happens to the kinetic energy of atoms?
The atoms in a hot object move faster than atoms in a cold object.
Answer:
The atoms in a hot object move faster than atoms in a cold object. The atoms in a hot object have more kinetic energy than the atoms in a cold object. Adding heat to a substance will make the atoms vibrate more and when heat leaves the substance; the atoms will vibrate less. Potential energy is stored energy.
How much time will it take an armadillo traveling 0.1 m/s to go 2010 meters?
Answer:
20100s
Explanation:
Is image 3 correct?
Yes
or
No
Answer:
yes." because everything is right
Answer:
Yes i assume srry if i am wrong
Explanation:
Sven's team put its insulated ice cube into a sealed plastic container. Which
type of thermal energy transfer was the team trying to prevent?
A. Radiation
B. Convection
C. Conduction
D. Translation
Answer:B
Explanation:
Aluminum hydroxide is a common _________
Answer:base
Explanation:apex
In the example of jumping off a chair, what is the impulse that will stop your fall?
Answer:
For me it would be what if i die
Explanation:
What is intensive physical property of matter?
PLEASE HELP
Answer:
Explanation:
An intensive property is a property of matter that does not change as the amount of matter changes. It is a bulk property, which means it is a physical property that is not dependent on the size or mass of a sample. In contrast, an extensive property is one that does depend on sample size.
Help please!! 20 points
Answer:
I cant hardly read the words for me to answer
Explanation:
which element on the periodic table has the largest atomic number?
Answer:
Oganesson
Oganesson has the highest atomic number and highest atomic mass of all known elements. The radioactive oganesson atom is very unstable, and since 2005, only five (possibly six) atoms of the isotope 294Og have been detected.
Explanation:
can some one do for me a power point
Answer:
so basicly i cant do it for u because my computer is not leting me but you just got to search up answer or ask your teacher for help or like i do i say that i ternd it in and the teacher will say no you didint say that u did and she will say can u send it to me say no bc i deleted
Explanation:
hope this helps❤️
Using Newton's 2nd law,find the mass if the force is 18 N and the acceleration is 2 m/s/s.
Answer:
9 kg
Explanation:
According to Newton's second law:
[tex]f = ma[/tex]
[tex]m = \frac{f}{a} [/tex]
Given:
f = 18 N
a = 2 m/s^2
Substitute the given values in the formula.
[tex]m = \frac{18}{2} [/tex]
[tex]m = 9[/tex]
Which of the following shows places on the Earth's surface the most accurately?
A.thematic maps
B.globes
C.general purpose maps
D.physical maps
I believe that the answer is D physical map.
Answer:
b: globes
Explanation:
the earth cannot be accurately put onto a map without distortion in places away from the equator
What does science explain?
A) moral values
B) Biased opinion
C) Meaning of life
D) Natural phenomena
Answer:
D - Natural Phenomena
Answer:
D) Natural phenomena
Explanation:
science can't explain the others
A car accelerates uniformly from rest at 2.2 m / s^2 for 3.0 s.Calculate the speed of the car at time t = 3.0 s
Answer:
6.6m/s
Explanation:
we know that
v = u + at
= 0+ 2.2*3
=6.6m/s