Answers
Related Questions
The vertical columns in the periodic table are called _____________.
Answers
Answer:
The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups. Groups are labeled at the top of each column.
Explanation:
Two identical books are placed on a bookshelf. Book number 1 is on a shelf one meter above the floor
Answers
Complete question is;
Two identical books are placed on a bookshelf. Book 1 is on a shelf one meter above the floor and Book 2 is on a shelf two meters above the floor.
Which statement best compares the potential energy of the books.
A) Book 2 has twice as much potential energy as Book 1
B) Book 1 has twice as much potential energy as book 2
Answer:
A: Book 2 has twice as much potential energy as Book 1
Explanation:
Formula for potential energy is;
P.E = mgh
Where;
m is mass
g is acceleration due to gravity
h is height
Now, they are identical books and thus will have the same mass while acceleration due to gravity remains constant.
For book 1 which is 1 metre above the floor;
P.E = mg × 1
P.E = mg
For book 2 which is 2 metres above the floor;
P.E = mg × 2
P.E = 2mg
We can see that potential energy for book 2 is twice that of book 1.
Thus,option A is correct.
Answer:
a
Explanation:
Weight is the amount of matter in an object true or false
Answers
Answer:
False.
Explanation:
Mass is the amount of matter in a given object. Weight is the force acting on an object due to gravity.
Answer:
False
Explanation:
Weight is the act of pulling an object towards the earth surface so weight is a force to amount
a body accelerates uniformly from rest at 2m/s square. calculate it's velocity after traveling 9m.
Answers
Answer:
6m/s
Explanation:
Given parameters:
Initial velocity = 0m/s
Acceleration = 2m/s²
Distance = 9m
Unknown:
Final velocity = ?
Solution:
To solve this problem, we use the expression below:
v² = u² + 2as
v is the final velocity
u is the initial velocity
a is the acceleration
s is the distance
v² = 0² + (2 x 2 x 9) = 36
v = 6m/s
Forces in the same pair have equal size but opposite _________ .
Answers
Eliza starts from a house and skateboards 10 meters towards the north, then turns back and skateboards 4 meters back to the south. What is Eliza 's displacement from the house?
Answers
Answer:
6m
Explanation:
If Eliza starts from a house and skateboards 10 meters towards the north, her distance will be +10m (moving towards positive y direction)
If she then turns back and skateboards 4 meters back to the south, her distance will be -4m (along the negative y direction)
The displacement from the house is 10m - 4m = 6m
*need help asap! on a timer* Please select the word from the list that best fits the definition
Simplified diagram that shows the movement of an object as a series of single points
Answers
Answer:
particle model
Explanation:
A particle model is a simplified version of a motion diagram in which the object in motion is replaced by a series of single points.
Calculate the frequency (v) in Hertz (Hz) of a wave that has a wavelength of 4.71 meters.
Answers
Answer:
6.37 x 10⁷Hz
Explanation:
Given parameters:
Wavelength = 4.71m
Unknown:
Frequency = ?
Solution:
To solve this problem, we use the expression below:
V = F∧
V is the velocity = 3 x 10⁸m/s
F is the frequency
∧ is the wavelength
3 x 10⁸ = F x 4.71
F = 63694267.52Hz = 6.37 x 10⁷Hz
Why does a person in a freely falling elevator
feel weightless?
Answers
Answer:Earth-orbiting astronauts are weightless for the same reasons that riders of a free-falling amusement park ride or a free-falling elevator are weightless. They are weightless because there is no external contact force pushing or pulling upon their body. In each case, gravity is the only force acting upon their body.
Explanation:
How does the energy in the light of the aurora borealis compare to the energy as an excited electron returns to its original energy level?
twice the energy
one-third of the energy
half of the energy
equal to
Answers
Answer:
I THINK IS HALF OF THE ENERGY
Explanation:
PLEASE MARK ME AS BRAINLIEST
Answer:
equal to
Explanation:
(Not for cheating,just for help)
How does the energy in the light of the aurora borealis compare to the energy as an excited electron returns to its original energy level?
twice the energy
one-third of the energy
equal to
half of the energy
What are the scientific principles of physical science
Answers
Answer:
Describing and measuring motion. Newton's laws of motion. Forces, weight, and mass. Momentum and conservation of momentum.
The theory of gravity.
Energy, work, and power. Motion, position, and energy.
Explanation:
Answer:
lOl can i have brainliest
Explanation:
What is meant by net force?
Answers
The person protected by insurance policy
Answers
Answer:
Jake from state famr
Explanation:
If I am in a Ferrari and I travelled for 3 hours at a speed of 270 km/h. How far did I travel?
Use the following formula:
distance velocity x time
a)810km
b)90km
c)810km/hr
Answers
difference between MKS and CGS system pls give answer in box
Answers
Answer:
Explanation:
MKS stands for Meter, Kilogram and second. In this system of unit mass is given in Kilogram, length in meter and time in second. ... CGS system stands for Centimeter- Gram- Second system. In CGS system, length is measured in centimeters mass is measured in grams and time is in seconds.
Can someone pleaseeee help if you’re correct I’ll give u brainlist
Answers
Answer:
Explanation:
The corona virus Vaccine will have some side effects like soreness in injection area but this will only last for a couple of days. I believe the answer is that there is no long term affect.
Where on this diagram does the ball have the highest point of gravitational potential energy?
Answers
Unlike eukaryotes, prokaryotes do not have:
A. DNA
B. cytoplasm
C. cell walls
D. a membrane bound nucleus
Answers
D is the answer
Unlike eukaryotes, prokaryotes have no membrane-bound organelles. This means that they lack a nucleus, mitochondria, and other advanced cell structures
an electric lamp transfers 500j in 5s what is it’s power
Answers
Explanation:
An electric lamp transfers 500j in 5s
So in 1s = 500/5
= 100
So, it's strength is 100j/s
So, 100j in 1s
Which element in the 18th column of the periodic table (shown below) has the largest radius?
He
Ar
Xe
Rn
Answers
Answer: Rn :)))) no explanation needed
Newton’s first law of motion is often called the law of?
Answers
Answer:
Newton's first law is often called the law of inertia.
searched it up to verify
Also welcome to brainly
In a catapult, energy is transferred into useful kinetic energy stores what store is the energy in when it is in the catapult
Answers
Explanation:
In a catapult, Initially, energy is stored in the form of potential energy which is later converted into kinetic energy.
Potential energy can be stored in the form of elastic potential energy in the case of elastic. It suddenly releases the energy to propel the object into the air.
Answer:
The right answer is "strain" or "strain energy" or "elastic potential energy" or "elastic energy" or "potential energy" or "elastic potential" or "elastic"
Explanation:
Catapults store energy as elastic potential energy.
Because of inertia, it will be ____ to stop a larger object than a smaller object if they are both moving at the same speed.
Answers
Answer:
harder
heavier objects resist change more than lighter objects.
This is because larger objects have more mass and thus more inertia
Final Exam
5 seconds after starting from rest, a car is moving at 45 m/s. What is the car's average acceleration?
Answers
Time= 5 sec
Initial velocity(u)= 0
Final velocity( v)=45 m\s
Accleration(a)=?
We have,
[tex]a = \frac{v - u}{t} [/tex]
[tex]a = \frac{45 - 0}{5} [/tex]
[tex]a = \frac{45}{5} [/tex]
a=9m\s
What do these two changes have in common? your breath becoming visible on a cold day building a tower out of magnetic blocks
Answers
Describe the speed of a planet as it revolves around the sun (hint Kepler's second law)
Answers
Fred takes a personal assessment that tells him that he would be great in the Agriculture, Food, and Natural Resources career cluster. What did Fred most likely mark as interests?
A-the justice system, horticulture, raising animals
B-being outdoors, supporting arguments, fixing broken items
C-being outdoors, horticulture, raising animals
D-fixing broken items, researching topics, leadership skills
Answers
Answer:
yes it is C
Explanation:
What is a common criticism of both the Milgram experiment and the Stanford Prison experiment?
Answers
A man is pushing a heavy crate up an inclined plane into the back of semi trailer.What can the man do to make it easier to get the crate up the ramp
Answers
Answer:
B) Make the ramp longer
Explanation:
A machine is a device that makes work more easier and faster. A machine also saves time.
A ramp is a simple machine that is used to lift heavy object with a force that is lesser than the actually force needed. A ramp is in the shape of an inclined plane, which makes pushing an object easier than the required force needed.
The formula for a ramp is given by:
Force needed to push * length of the ramp = weight of object * height of ramp.
Force needed to push = (weight of object * height of ramp) / length of ramp
We can see that the force needed is inversely proportional to the ramp length. Hence for a ramp with longer length you need lesser force to raise the object.
a
It do
While doing dishes, Zvi drops his
3.0x10 3kg platinum wedding band
into the dishwater, displacing a
volume of 1.40x107m3 of water,
what is the density of the platinum
band?
n
CSS c
sion
im
al
Select one:
a. 2.56x104 kg/m3
b. 1.0x104 kg/m3
Di
c. 0.5x104 kg/m3
IL
d. 2.14x104 kg/m3
IL:
Answers
Answer:
d. 2.14 x 10⁻⁴ kg/m³
Explanation:
Density is defined as the mass of an object per unit volume occupied by that object. The formula of density is, therefore, given as follows:
[tex]\rho = \frac{m}{V}[/tex]
where,
ρ = density of platinum band = ?
m = mass of platinum band = 3 x 10³ kg
V = Volume displaced by Platinum band = 1.4 x 10⁷ m³
Therefore,
[tex]\rho = \frac{3\ x\ 10^{3}\ kg}{1.4\ x\ 10^{7}\ m^{3}}\\\\\rho = 2.14\ x\ 10^{-4}\ kg/m^{3}[/tex]
Hence, the correct option is:
d. 2.14 x 10⁻⁴ kg/m³
