Answer:
Temperature is a measure of the kinetic energy of particles in a substance. As temperature increases, the atoms or molecules in a substance gain energy. As temperature decreases, the particles lose energy. A change in the energy of particles causes a change in their arrangement. A change in the arrangement of particles can lead to a physical change.
Explanation:
Brainliest pls
what effects does ionizing radiation have on the atmosphere
although the pivot exerts a force on the ruler it does not exert a torque with respect to the pivot point. why not?
Answer:
The situation is not shown, however if one calculates torques about the pivot point, then the pivot point itself exerts no torque because the force applied by the pivot point exerts zero torque because Fp * L = 0 where L = 0 in this case.
If one wants to calculate torques about, say, the end of the ruler then one would need to calculate the torque applied by the pivot point.
I NEED A SCIENCE EXPERT TO GIVE ME THE RIGHT ANSWER TO THESE ASAP NO LINKS !!!
Answer:
1 st question: Control variable
2nd question: random variable
3rd question: if the two objects are dropped from the same height they will hit the ground at the same time
Answer:
it IS the control variable
Explanation:
Please help I’ll mark brainlyest
Answer:
10N right
Explanation:
The 10N of force acting down and up on the object cancel out.
The 15N of force pulling the force to the right is stronger than the 5N of force pulling the object left
15N - 5N = 10N
The magnitude and unit is 10N, and the direction is right
Acetylene welding goggles are worn because they protect the eyes from
Answer:
wala
Explanation:wala
please help!! i’ll mark you the brainliest answer
A box of mass 4kg is being pulled along a rough surface to the right, as shown below. When F=8N, the box accelerates to the right 1m/s^2. If F is doubled to 16N, the acceleration of the box across the same rough surface will be:
A) 1m/s^2
B) 2 m/s^2
C) 3 m/s^2
D) 4 m/s^2
E) 0.5 m/s^2
Hi there!
Recall that:
∑F = ma
In the given situation, there is acceleration occurring in the horizontal direction, so there is a net force.
∑F = Fa (Force applied) - Fκ (Force due to kinetic friction)
We can plug in given values to solve for the frictional force:
ma = Fa - Fκ
(4)(1) = 8 - Fκ
4 = 8 - Fk
Fκ= 4N (negative since working opposite to acceleration)
Now, solve given the new force:
4a = 16 - 4
4a = 12
a = 3 m/s², Answer C.
Can someone help me with one through seven I will mark you the brainly
Answer:
1. F = M x A
2. Force
3. 2nd Law: Force
4. a, b, c (in order)
5. 3rd Law: Action and Reaction
6. b, c, a (in order)
7. 1st Law: Inertia
1. F=ma
2. Force
3. Second law
4. a)first
b)second
C) third
5. Third
6. a) second
b) third
C) first
7. First
what is a concentration?
Answer/Explanation:
In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration.
A concentration refers to a subject or study within a specific major. As part of the degree coursework, concentration classes count toward your major requirements as well.
if you hold a heavy weight over your head, the work you do __________.
Answer:
Is zero.
Explanation:
I legit just had this question on my homework.
What ocean resource may be harvested by vacuuming or trawling?
A. minerals
B. fish
C. fuels
Thank You
Answer:
B. fish
Explanation:
Vacuuming: to suck up something from the ocean. So in this case it would be sucking up whole fish with huge vacuums.
Paula has walked in a straight line, 30.5° north of west, for 1650 meters. How far south and east should she walks to return to her original location
A 63 kg boy and sled are pulled along level ground with a force of 577 N. The boy and sled
are moving at a constant velocity of 2.4 m/s. What is the size of the frictional force?
Answer:
The size of the frictional force is 577 N.
Explanation:
What is frictional force?Frictional forces are exerted every time you have two surfaces sliding across one another. Friction depends on:
how rougher are the surfaces on contact;how harder you push one surface to the other.There are two types of friction:
static friction [tex]f_s[/tex];dynamic (sliding) friction [tex]f_d[/tex].Now let's attack the problem:
First, you have to write the data down:
[tex]\bullet \quad m= 63\,kg\\\\\bullet \quad F= 577\,N\\\\\bullet \quad v= 2.4\,m/s[/tex]
If the boy and the sled moves on constant velocity, Newton's First Law Of Motion states that the net force acting on them must be zero:
[tex]F_{net}=0[/tex]
Applying Newton's Second Law Of Motion, we get:
[tex]F-f_d=0[/tex]
which means that:
[tex]F=f_d[/tex]
In other words, the dynamic frictional force equals the force that moves the boy and sled. So we may write:
[tex]\boxed{f_d=577\,N}[/tex]
Conclusion: the size of the (dynamic) frictional force is 577 N.
Happy studying!
Brainly Team
what is concentration?
Answer:
The concentration of a chemical substance expresses the amount of a substance present in a mixture.
Another definition is that concentration is the ratio of solute in a solution to either solvent or total solution. Concentration is usually expressed in terms of mass per unit volume.
Answer:
In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration.
What will happen if a renewable resource is used up faster than it can be
replenished or regenerated? *
Answer:
there will be no more if a resource is used up you have to find a new aource
Hi I just need an answer btw it’s science not physics
Answer:
You need to divide 200 by 23 seconds in order to get your answer.
A cheetah running initially at a velocity of 20 m/s accelerates
uniformly at 3.0 m/s. The velocity of the cheetah will be
m/s after 4.0 seconds.
Answer: I think it’s 32 m/s
Explanation: Vi=20 m/s
Vf=?
a=3.0 m/s^2
t= 4s
Vf= Vi + at
Vf= 20 m/s + (3 m/s^2)(4s)
Vf= 20 m/s + 12m/s
Vf= 32m/s
If A cheetah running initially at a velocity of 20 m/s accelerates
uniformly at 3.0 m/s2. The velocity of the cheetah after 4.0 seconds will be 32 m/s.
To find the velocity of the cheetah after some time we can use the formula:
v = u + at
where:
v = final velocity
u = initial velocity
a = acceleration
t = time
Given:
Initial velocity (u) = 20 m/s
Acceleration (a) = 3.0 m/s²
Time (t) = 4.0 seconds
now we can put values in eq.
v = 20 m/s + (3.0 m/s²) * 4.0 s
v = 20 m/s + 12 m/s
v = 32 m/s
so the answer is 32 m/s.
To learn more about Acceleration, here:
brainly.com/question/2303856
#SPJ3
Why can we predict the phases of the moon?
please dont search it up
Answer:
Every year, the moon moves about an inch away
Evan drives a golf ball with an initial velocity of 49 meters per second at an angle of 16 degrees own a flat driving range. How far will the golf ball land?
Answer:
solusion Explanation:the answer in 984tha
22. Calculate the displacement in meters a cyclist would travel in 5.00 h at an average
of 12.0 km/h to the south west
A 755 N force is used to push a 15 Kg box across the floor. What is the acceleration of the box?
Answer:
a = 151/3 m/s²
General Formulas and Concepts:
Forces
Newton's 2nd Law of Motion: F = ma
F is force (in N)m is mass (in kg)a is acceleration (in m/s²)Explanation:
Step 1: Define
Identify variables
F = 755 N
m = 15 kg
Step 2: Solve for a
Substitute in variables [Newton's 2nd Law of Motion]: 755 N = (15 kg)aIsolate a: a = 151/3 m/s²Topic: AP Physics 1 - Algebra Based
Unit: Forces
When does the object have potential energy?
Answer:
To summarize, potential energy is the energy that is stored in an object due to its position relative to some zero position.
Explanation:
An object possesses gravitational potential energy if it is positioned at a height above (or below) the zero height.
The device that is made up of many single slits that diffract light and form a diffraction pattern , is called
Gọi là máy quang phổ kế
That's a diffraction grating.
What is a name of a isotope of carbon
Answer:
I've heard of many different names of isotopes of carbon, and they're Carbon-14, Deuterium, Hydrogen-1, Oxygen-18, boron-11, Nitrogen-14, and Neon-20.
when was the Hubble telescope launched
MY PAPER IS DUE IN AN HOUR!!!
Your challenge- Write a paper on how to build, construct, and engineer a faster roller coaster. You essay must contain 5 paragraphs minimum. Each paragraph must be 3 sentences minimum.
Potential energy, Kinetic energy, Thermal energy and friction, speed, velocity, and acceleration, and the law of conservation of energy must be the main ideas of your paragraphs
Answer:
Your kinetic energy is always proportional to the square of your speed,
no matter whether you're on a bicycle, a roller coaster, or a baby carriage.
The faster you're moving, the more kinetic energy you have.
Your potential energy doesn't depend on speed at all, only on height.
On a roller coaster, the minimum speeds are usually at the top of a hill
or a loop, so the potential energy would generally correspond to the
slowest speeds. But again, that's not because of the speed. It's because
of the height.
Explanation:
constraints for the sub-problem for pollution
Hope this helps ♡♡
What would happen if the mass of Venus doubled?
Answer:
it will start moving faster and may also move away from the sun..
or if it's speed decreases it will go towards the sun and will collapse with it
brainliest plz
__________ invented the analytical engine, a machine that did calculations.
Answer:
Charles Babbage
Explanation:
Analytical Engine, generally considered the first computer, designed and partly built by the English inventor Charles Babbage in the 19th century (he worked on it until his death in 1871).
You push the sofa across the floor. Which force is NOT present on the sofa?
a)gravity
b)normal
c)tension
d)applied
Answer:
c) tension ........ ........
Answer:
gravity
Explanation:
because it cannot be move across if there is present gravity force
What direction would the net force acting on this box be pointed?
northeast
northwest
southeast
southwest
Answer:
The diagram shows a net 2 N in the north direction and 2 N in the east direction - this would result in (4 + 4)^1/2 to the northeast.