Answer:
true
Explanation:
this is true, igneous rocks are formed from molten lava when it cools
Answer: True
Explanation:
The mass of a meteoroid was found to be 1.24 × 107 kilograms. Write the mass in standard notation.
Answer:
The value we are given in the question is 1.24 * 10^7. This form of writing number is called scientific notation. The standard notation is the normal, regular way of writing numbers. Scientific notation and standard notations are interchangeable.
1.24 * 10^7 written in standard notation will be = 1.24 * 10000000 = 12400000.
Thus, the mass of the meteoroid was 12400000 kg.
Explanation:
d) A tank with dimensions: 3m x 2m x 2m contains water upto its half
pertion. What is the pressure at the base of the tank? (density of water
= 1000 kg/m3, g= 9.8 m/s2)
(Ans: 9800 Pa)
Answer:
P = 9800 [Pa]
Explanation:
In order to calculate the pressure at the bottom, we must use the following formula.
P = Ro*g*h
where:
P = pressure [Pa] (units of pascals)
Ro = density of the water = 1000 [kg/m³]
g = gravity acceleration = 9.8 [m/s²]
h = height = 1 [m] (because its half of the portion, the full height is 2 m)
P = 1000*9.8*1
P = 9800 [Pa]
A 12kg cheetah accelerates 24 m/s". What is the force the cheetah needed to run?
Answer:
288N
Explanation:
Given parameters:
Mass of Cheetah = 12kg
Acceleration = 24m/s²
Unknown:
Force needed by the cheetah to run = ?
Solution:
The force needed by the Cheetah to run is the net force.
According to Newton's law;
Force = mass x acceleration
Insert the given parameters and solve;
Force = 12 x 24 = 288N
A crate is pulled by a force (parallel to the incline) up a rough incline. The crate has an initial spped shown in the figure below. The crate is pulled a distance of 8.24m on the incline by a force of 150N force. b) What is the speed of the crate after it is pulled the 8.24M? Answer in units of m/s.
Answer:
(a) Kinetic energy of the cart is 648.32 J.
(b) Speed of the cart is 11.44 m/s.
Explanation:
From the attached below figure we came to know that,
Mass of the crate is 10 kg (m)
Initial speed of the crate is 1.2 m/s (v)
Coefficient of friction on a rough plane is 0.286 (µ)
Force on the cart is 150 N (F)
The distance which crate is moved (d) is 8.05 m.
Calculation of kinetic energy:
Acceleration of the cart:
We know that,
F = F – m × g × sinθ - µ × m × g × cosθ (F = ma)
m × a = F – m × g × sinθ - µ × m × g × cosθ
10 × a = 150 – (10 × 9.8 × sin 27) – (0.286 × 10 × 9.8 × cos 27)
10 × a = 150 – 44.49 – 24.97
10 × a = 80.54
Calculation of speed:
Change in kinetic energy = m × a × d
Change in kinetic energy = 10 × 8.054 × 8.05
Change in kinetic energy = 648.32 J
Explanation:
How can you determine the mass number of the daughter product after alpha decay has taken place?
Answer:
Reduce the mass number of the parent by 4
Explanation:
To determine the mass number of the daughter product after alpha decay has taken place, reduce the mass number of the parent by 4.
An alpha particle reduces the mass number of the parent by 4 and the atomic number by 2.
It has the the same structure as an helium atom.
So, since helium has mass number of 4 and atomic number of 2, it reduces the daughter product by this number.
The addition of electron shells results in _____
from the nucleus.
shielding of electrons
Answer here
Answer:
shielding of electrons
Explanation:
The addition of electrons shells results in the shielding of electrons away from the nucleus, most importantly the nuclear pull resulting from the charge.
The nucleus pulls electrons to itself due to the net positive charge on it. As more electronic shell is added, the effect of the pull weakens outward. The inner shell experiences the nuclear pull more than the outer shell electrons.The effect is responsible for a wide range of properties of elements.
Calculate the average atomic mass of caarbon given the following information: Carbon-12 12.000 amu 98.89%
Carbon-12 13.003 amu 1.11%
Answer:
12.01
Explanation:
Given parameters:
Abundance of C-12 = 98.89%
mass of isotope = 12amu
Abundance of C - 12 = 1.11%
mass of isotope = 13.003
Unknown:
Average atomic mass of carbon = ?
Solution:
The average atomic mass ;
R.A.M = (mass of isotope x abundance of isotope)-12 + (mass of isotope x abundance of isotope)- 13
Insert the parameters and solve;
R.A.M =( 12 x 98.89%) + (1.11% x 13.003)
R.A.M = 11.87 + 0.14 = 12.01
What is the benefit of using simple computational models in a spreadsheet application, like the one used in this course, to predict mechanical energy and related values?
(1 point)
It is easy to calculate new scenarios.
It is easy to learn new concepts.
It is easy to compare different cases.
It is easy to detect calculation errors.
Answer:
Option C would be the correct alternative.
Explanation:
An integrated programming program for arranging, evaluating, and saving analytical results seems to be a spreadsheet. Spreadsheets have been established as computerized analogs to worksheets for manual banking. There are various variables in something like a theoretical model that describes the structure being analyzed. By changing the variables as well as sometimes throughout combination while evaluating the outcome, analysis is performed.The other choices offered aren't relevant to the existing contract below in the description section.
Answer:
c
Explanation:
6th grade science If you answer this your the brainiest
Answer:
8. sketches and models helped the astronauts in their training program as they prepare for their missions
9. before building the Mars lander , students need to sketch their design
what is the dimension of resistivity
Answer:
Are you looking for the formula? because if so:
M L^2 T^-3 I^-2
Explanation:
May I have brainliest please? :)
How did later chemists change Mendeleev’s periodic table?
A. They included physical properties such as melting point and density.
B. They used atomic number instead of atomic mass to organize the elements.
C. They used atomic mass instead of atomic number to organize the elements.
D. They included chemical properties such as bonding power.
A 60 kg person walks up a 75 m tall hill. How much gravitational
potential energy do they have at the top of the hill?
Answer:
45,000 JExplanation:
The gravitational potential energy of a body can be found by using the formula
GPE = mgh
where
m is the mass
h is the height
g is the acceleration due to gravity which is 10 m/s²
From the question we have
GPE = 60 × 10 × 75
We have the final answer as
45,000 JHope this helps you
Which of these charges has the greatest magnitude?
a charge of -5
a charge of -2
a charge of +4
O a charge of +1
Answer:
a charge of +4
that's how I could understand
How many significant figures are in 107 moles of sodium
Answer:
3 significant figures
Explanation:
here zero is counted as one of the significant figures since it lies next to an integer.
hence the number has 3 sfg
A group of friends push a van, using a total force of 220 N. The van moves a distance of 0.2 m. How much work have they done?
Answer:
44
Explanation:
Work = Force X Distance
A basketball with a mass of 0.5 kilograms is accelerated at 2
meters per second2. The net force acting on the mass is
A) 0.5 N
B) ON
C) 1N
D) 2N
Answer: 1N
Explanation: its not 0N.
If a basketball with a mass of 0.5 kilograms is accelerated at 2 meters per second². The net force acting on the mass is 1 Newton, therefore the correct answer is option C.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
As given in the problem, if a basketball with a mass of 0.5 kilograms is accelerated at 2 meters per second², then we have to find out the force acting on the basketball.
The net force acting on the basketball = 0.5 × 2
= 1 N
Thus, the net force acting on the mass is 1 Newton, therefore the correct answer is option C .
To learn more about Newton's second law here, refer to the link given below ;
brainly.com/question/13447525
#SPJ2
In a pressure cooker, a lid is screwed tightly onto a pot so that the air pressure in the pot is increased. What effect, if any, will this have on the boiling point of water in the pot?
Answer: the boiling pint will increase
Explanation:
How many forces are used in a catapult ( please help me asap I have a presentation due tomorrow and. I need help starting
Answer:
Hey buddy, here is your answer.Hope it helps you.
Explanation:
A catapult is a launching device that allows us to experimentally observe projectile motion. Once the ball is launched, the only forces acting are gravity and air resistance.
What is molasses?
dye
sugar
brown candy
brown syrup
I need help fast please I will give you extra points
Answer: Brown syrup
Explanation:
Answer:
syrup
Explanation:
When ionic bonds form compound structures in a solid state, they arrange in latticed, crystalline patterns.
What does this say about the structure of the compound on the molecular level? What does it say about
the properties of that compound?
Answer:
Structures are determined by two principal factors: the relative sizes of the ions and the ratio of the numbers of positive and negative ions in the compound.
Ionic compounds at a molecular level are arranged in definite patterns to give a crystalline structure leading to a high melting point, high boiling point and high density in ionic compounds.
In ionic bond is formed when a metal transfers electrons to a nonmetal and an ion pair is formed. The ions are held together by strong electrostatic interaction as described by Coulomb's law.
However, the smallest unit of an ionic substance is called the formula unit. The compound arranges itself in definite patterns to form a crystalline lattice. Hence, the structure of ionic compound is highly ordered. This leads to a high melting point, high boiling point and high density in ionic compounds.
Learn more: https://brainly.com/question/14191541
PLZ HELP NOW
A boy has a mass of 55 kg. He climbs 15 m up a tree. What is his gain in
GPE? (Don't forget your units)
Answer: mass x height x gravitational field strength (g)
note: gravitational field strength (g) = 10 N/Kg
55 x 15 x 10 = 8250
gpe = 8250j
Explanation:
How high can a human throw a ball if he can throw it with initial velocity 90 mph.
a144.3 m
b 91.82 m
c 82.45 m
d99.82 m
e45.52 m
Answer:
c 82.45 m
Explanation:
To solve this problem, we have to apply the right motion equation.
Given parameter;
Initial velocity = 90mph
So;
Using;
V² = U² - 2gh ; we can solve this problem
V is the final velocity = 0mph
U is the initial velocity
g is the acceleration due to gravity
h is the height
Now insert the parameters and solve;
We need to convert from mph to m/s
1 mph = 0.45m/s
90mph = 40.5m/s
0² = 40.5² - (2 x 9.8 x h)
0 = 1640.25 - 19.6h
-1640.25 = -19.6h
h = 83.7m
Solar-powered cars use energy from the Sun to work. A panel on the car absorbs light energy from the Sun, which
then generates an electric current. This electric current, in turn, allows the car to move. Which shows the correct
order of energy transformations that take place in a solar-powered car?
electrical, chemical, kinetic
electrical, kinetic, radiant
radiant, chemical, electrical
radiant, electrical, mechanical
Answer: I Believe Its radiant, electrical, mechanical!
Explanation:
Please correct me if i'm wrong!
Answer:
D) radiant, electrical, mechanical Is correct!
Explanation:
Hope this helps! :)
Which tool can be used to measure the mass of a package being mailed
Answer:
A SCALE
Explanation:
Help I'm confused basic atom stuff
2. 11
The answer is 11 since there is always the same amount of protons as electrons.
3. 12
4. 13
5. 15
The answer is 15 since the number of protons has to be equal to the amount of electrons.
A substance burns in the presence of oxygen.
Which answer choice names a chemical property in this scenarlo?
O density
O boiling point
solid formation
O flammability
Answer:
D. flammability
Explanation:
I took the test and got it right
An object with a mass of 6.5 kg accelerates 12.3 m/s2 when an unknown force is applied to it. What is the amount of the force?
Answer:
79.95 kgExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 6.5 × 12.3
We have the final answer as
79.95 kgHope this helps you
What time is it in Orlando, FL when it is 10:00 a.m. in Los Angeles, CA?
7:00 a.m.
1:00 p.m.
2:00 p.m.
10:00 a.m.
Answer:
1:00 pm
Explanation:
CA is pacific time zone
FL is Eastern
pacific time is 3 hours less
Answer:
1:00 p.m.
Explanation:
Los Angeles, CA is in the Pacific Standard Time zone which is 3 hours behind the Eastern Standard Time zone, the time zone that Orlando, FL is in.
Determine the acceleration of a boat
with a speed of 18 m/s for 20 seconds.
Answer:
Explanation:
initial velocity, u = 0
final velocity, v = 18 m/s
time = 20 sec
acceleration, a = v - u / t
= 18 - 0 / 20
= 18 / 20
= 9 / 10
= 0.9 m/s^2
Hope this helps
plz mark as brainliest!!!!!!
an object is moving at a constant speed of 5mph and the net force = 0 N. which statement is true
Answer:5mph
Explanation:
