Which of the following does not accurately depict a scientific theory?A. Theories are tested over and over again.
B. Theories are supported in many ways.
C. Theories may be changed or replaced if new evidence is found.
D. Theories are absolute truths.
Answers
The best answer is d: this is not an accurate description of a scientific theory!
Related Questions
A Block slides down an incline that makes an angle of 30? with the horizontal direction. The coefficient of kinetic friction between the incline and the block is µk = 0.3i) Determine the acceleration of the block.ii) The block starts at rest from a height of 8m above the ground. What is the speed of the block when it reaches the bottom of the incline.
A 30.0 kg object rests on a flat, frictionless surface. A rope lifts up on the object with a force of 309 N. What is the acceleration of the object?
A heavier mass m1 and a lighter mass m2 are 20.5 cm apart and experience a gravitational force of attraction that is 8.50 10-9 N in magnitude. The two masses have a combined value of 5.80 kg. Determine the value of each individual mass.m1 = ____ kgm2 = ____ kg
An airplane on a runway accelerates at 4.0 meters/second2 for 28.0 seconds before takeoff. How far does the plane travel on the runway before takeoff?
Answers
Which one of the following lenses is a converging lens
Double-convex lens
Answers
Well, there you have a very important principle wrapped up in that question.
There's actually no such thing as a real, actual amount of potential energy.
There's only potential relative to some place. It's the work you have to do
to lift the object from that reference place to wherever it is now. It's also
the kinetic energy the object would have if it fell down to the reference place
from where it is now.
Here's the formula for potential energy: PE = (mass) x (gravity) x (height) .
So naturally, when you use that formula, you need to decide "height above what ?"
If you're reading a book while you're flying in a passenger jet, the book's PE is
(M x G x 0 meters) relative to your lap, (M x G x 1 meter) relative to the floor of the
plane, (M x G x 10,000 meters) relative to the ground, and maybe (M x G x 25,000 meters)
relative to the bottom of the ocean.
Let's say that gravity is 9.8 m/s² .
Then a 4kg block sitting on the floor has (39.2 x 0 meters) PE relative to the floor
it's sitting on, also (39.2 x 3 meters) relative to the floor that's one floor downstairs,
also (39.2 x 30 meters) relative to 10 floors downstairs, and if it's on the top floor of
the Amoco/Aon Center in Chicago, maybe (39.2 x 345 meters) relative to the floor
in the coffee shop that's off the lobby on the ground floor.
P.E.= mass×gravity×height, therefore 4kg×10×0= 0 J
K.E. is also equal to 0 because the block is not moving, is in the state of Inertia
B. 0.8
C. 2.5
D. 3.2
Answers
Answer:
correct option is A
20 km we need 0.3 gallon fuel
Explanation:
given data
gallon = 40 miles
distance = 20 km
to find out
how many gallons of fuel
solution
we know that 20 km = 12.4274 miles
and
we know here car is travel 40 miles per gallon
it mean here that
40 miles = 1 gallon
1 miles = 1/ 40 gallon
and
12.4274 miles = 1/40 × 12.4274 gallon
solve it to get gallon of 20 km or
12.4274 miles = 0.31 gallon
so in 20 km we need 0.3 gallon fuel
correct option is A
Answer:
The number of gallons are 0.3.
A is correct option.
Explanation:
Given that,
A hybrid car can travel 40 miles per gallon
We need to calculate the mile/gallon to km/gallon
Gallon is the unit of liquid and miles and kilometer are the unit of distance.
We need to calculate the number of gallons of fuel
Number of gallon
Hence, The number of gallons are 0.3.
Answers
The magnitude of each charge is 3.94 x coulombs.
We have a pair of equal charges are separated by 0.75 m and there's a 2500 N force acting on them.
We have to strength of the charge.
What is the formula to calculate the force between two point charges separated by a some distance?
According to Coulomb's law, the formula to calculate the force between the two point charges (say q and Q) separated by a some distance (say r) is given by -
F =
According to the question -
Force between two point charges equals to = F = 2500 N
Distance between the point charges = 0.75 m
Let's assume the magnitude of each charge be x, therefore using the coulomb's law, we get -
F =
coulombs
Hence, the magnitude of each charge is 3.94 x coulombs.
To understand more about coulomb's law visit the link below -
#SPJ2
Answer:
4.5643546 × 10^ -4
Explanation:
Answers
Speed of light in the medium = 2.14×10⁸ ms⁻1.
The refraction of a medium = 1.4
We know that speed of light in air= 3×10⁸ m/s
What is refractive index?
The ratio of the speed of the light in air to the speed of the light in medium is defined as refractive index.
Refractive index = speed of light in air ÷ speed of light in medium
1.4 = 3×10⁸ ÷ speed of light in medium
speed of light in medium = 3×10⁸ ÷ 1.4
= 214285714.2857 km/s
Hence, the speed of light in that medium is = 214285714.2857 km/s
Learn more about the refractive index
#SPJ5
(speed of light in vacuum)
divided by
(index of refraction of the medium).
For the medium you're describing, it's
c / 1.4 = about 0.714 c = 214,137,470 m/s .
choosing the intensity level
watching others complete the activity
selecting an activity you enjoy
Answers
1. Frequency
2. Intensity
3. Time
4. Type.
As you may expect, this refers to however typically you may exercise. Once any sort of exercise is performed your body completes a method of reconstruction and repairing. So, decisive the frequency of exercise is vital so as to search out a balance that has simply enough stress for the body to adapt and conjointly permits enough rest time for healing.
Therefore, the first thing to focus on when creating a workout plan is determining the frequency of the activity. It is important to take a look at how much time do you have to do things in order to manage your tasks daily and you can give enough time for each activity.