Answer:
find out the le
Explanation:
Why was Copernicus reluctant to publish his ideas?
Answer:
He was scared
Explanation:
Answer:
He Feared persecution .
Explanation:
In a balanced chemical reaction, the total mass of the products always equals the
a.molar mass of the reactants.
c. total mass of the reactants.
b. atomic mass of the reactants.
d. proportional masses of the reactants.
Answer:
A balanced chemical reaction preforms the law of conservation of mass, when the total mass of the products always equals the total mass of the reactants.
Explanation:
In a balanced chemical reaction, the total mass of the products always equals the total mass of the reactants. Thus the total mass of the system is conserved.
What is mass conservation?According to the law of conservation of mass, mass can neither be created nor be destroyed. Hence, the total mass of the system is conserved. However, mass can be transformed into equivalent energy.
The balanced chemical equation of a reaction represents the perfect stoichiometric ratios of each reactants and products. The number of each elements in the product side must be equal to their number in the reactant side.
Therefore, the total mass of a products in a reaction is always equal to the total mass of reactants and no new atoms are created or any reactant elements are destroyed.
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which equation according to ohms law
Answer: Ohm's law states that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance, and directly proportional to the resistance of the circuit. The formula for Ohm's law is V=IR.
with a velocity of 15 m/s, how long would it take the dog to run 100 meters?
Answer
6.66 seconds imma seem like an idiot if something like this is werong
Explanation:
dogg is speed
100/15
Answer:
6.67 s
Explanation:
Assuming that the velocity is constant, then the governing equation in this case is:
Distance = Velocity x Time
or
Time = Distance / Velocity
= 100 / 15
= 6.67 s
Which is not a reason why the mass of an atom is expressed in atomic mass units rather than in grams?
Scientists could not agree on a standard.
Atomic mass allows for mass differences in isotopes.
The mass in grams is too small to be useful.
Atomic mass units make it easier to compare the masses of atoms.
Answer:
A. scientists could not agree
Answer:
scientists could not agree on a standard
calculate the average speed ( in Km/hr) who runs to the store 8 km for 1 hour
Why do scientist use models?
Answer:
they mostly use them as predictions if items they are not sure about or to show ideas in a smaller form
Explanation:
Coach Sweeney walks 24 yards to the north along the sideline, pauses, and walks 11
yards back to the south. Determine Coach's resultant displacement.
Answer:
13 yards north.
Explanation:
Distance and Displacement
A moving object constantly travels for some distance at defined periods of time. The total moved distance is the sum of each individual distance the object traveled. It can be written as:
dtotal=d1+d2+d3+...+dn
This sum is obtained independently of the direction the object moves.
The displacement only takes into consideration the initial and final points of the path defined by the object in its moving. The displacement, unlike distance, is a vectorial magnitude and can be even zero if the object starts and ends the movement at the same point.
Coach Sweeney walks 24 yards north and 11 yards back south. If Coach Sweeney started at the origin, the first walk ends in point (0,24). After going back 11 yards, the final point is (0,13).
Since the displacement only takes the initial and final points, we can say the resultant displacement was 13 yards north.
Peyote contains a psychotropic drug called __________.
A.
guarana
B.
mescaline
C.
salvia
D.
dynorphins
Answer:
B. Mescaline
Explanation:
Answer:
Peyote contains a psychotropic drug called mescaline
or B
Explanation:
Which 4 of the following would be considered moderate or vigorous activities?
Question 2 options:
going for a run
vacuuming
surfing
basketball
golfing with a powered Cart.
bike riding
Problem
Position The figure shows a motorcyclist traveling east along a straight
road. After passing point B, the cyclist continues to travel at an average
velocity of 18 m/s east and arrives at point C2.8 s later. What is the
position of point ?
Answer:
s = 50.4 m
Hence, the point C is 50.4 m towards east from point B
Explanation:
Since, the motorcyclist travels at a constant speed in straight line towards east after point B. Therefore, we can use the following equation in this case:
s = vt
where,
s = distance covered = position of point C = ?
v = uniform speed of motorcyclist = 18 m/s
t = time interval = 2.8 s
Therefore,
s = (18 m/s)(2.8 s)
s = 50.4 m
Hence, the point C is 50.4 m towards east from point B
A 24 kg crate initially at rest on a horizontal floor requires a 75 N horizontal force to set it in motion. Once the crate is in motion, a horizontal force of 53 N keeps the crate moving with a constant velocity. Find μk, the coefficient of kinetic friction, between the crate and the floor.
Answer:
The coefficient of kinetic friction is approximately 0.225
Explanation:
The given parameters are;
The mass of the crate = 24 kg
The force required to set the mass in motion = 75 N
The force required to keep the crate in constant velocity = 53 N
We have;
Sum of horizontal forces, ∑Fₓ = 0
∑Fₓ = The force pulling thing the crate - The force of friction - The force of acceleration of the crate
The force of acceleration of the crate = 0 (Crate with constant velocity)
The force of friction = [tex]\mu_k[/tex] × N
N = The normal (acting perpendicular to the surface) force = (Here) Mass of crate × Gravity
[tex]\mu_k[/tex] = The coefficient of kinetic friction
N = 24 × 9.81 = 235.44 N
The force of friction = [tex]\mu_k[/tex] × 235.44
∴ ∑Fₓ = The force pulling thing the crate - The force of friction
∑Fₓ = 53 - [tex]\mu_k[/tex] × 235.44 = 0
53 - [tex]\mu_k[/tex] × 235.44 = 0
53 = [tex]\mu_k[/tex] × 235.44
[tex]\mu_k[/tex] = 53/235.44 ≈ 0.225
[tex]\mu_k[/tex] = The coefficient of kinetic friction ≈ 0.225.
The coefficient of kinetic friction between the crate and the floor is 0.22.
The coefficient of kinetic friction μk shows the ratio between frictional force and normal force over a body on a rough surface.
Given that:
mass of the crate = 24 kgthe horizontal force [tex]\mathbf{F_{s,max}}[/tex] = 75 NWe need to first find the coefficient of static friction (μs) to determine (μk);
Using the formula:
[tex]\mathbf{\mu_s = \dfrac{F_{s, max}}{m\times g}}[/tex]
[tex]\mathbf{\mu_s = \dfrac{75 \ N }{24 \ kg \times 9.81 \ m/s^2}}[/tex]
[tex]\mathbf{\mu_s = \dfrac{75 }{235.44}}[/tex]
[tex]\mathbf{\mu_s =0.32 }[/tex]
Now, once the crate is in motion; the horizontal force = 53 NHowever, the net force = 0; since F = Fk∴
The coefficient of kinetic friction can be computed as;
[tex]\mathbf{F = \mu_k \times N}[/tex]
[tex]\mathbf{ \mu_k = \dfrac{F}{N}}[/tex]
[tex]\mathbf{ \mu_k = \dfrac{f}{m \times g}}[/tex]
[tex]\mathbf{ \mu_k = \dfrac{53}{24 \times 9.8}}[/tex]
[tex]\mathbf{ \mu_k =0.22 }[/tex]
Therefore, we can conclude that the coefficient of the kinetic friction is 0.22
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help pleasee i give brainliest
Answer:
A is a solid. C is a gas. In solid an liquid the particals are touching. In C, the particals have less affect on each other because they are so far apart.
4
The accompanying graph represents the motion of an object.
Displacement
Time
According to the graph, as time increases, the velocity of the object
A. decreases
B.
increases
C remains the same
Answer: It remains the same
Using the law of conservation of energy, what is the kinetic energy at B? K.E. = 3, 6, or 4.8
Answer:
3
Explanation:
Who discovered the strong nuclear force
Answer:
James Chadwick
Explanation:
James Chadwick discovered that the nucleus of each atom contains neutrons in 1932. Shortly after this, Eugene Wigner suggested that the electromagnetic force is not involved in holding the nucleus together and that there are two different nuclear forces. We now refer to these as the strong and weak nuclear forces.
Answer:
James Chadwick
Explanation:
i just searched it up lol
a testable prediction about a possible to a problem is called a,
a: exercise
b: variable
c: hypothesis
d: experiment
Answer: C
A hypothesis is a testable explanation with some research behind it. An Hypothesis can be right or wrong.
The answer is C.
Hope it helps!
Answer:
c. is the answer but I'm not 100% sure
hypothesis
PLLLLLLEEEEESSEEEEE HELP!!!!!!!
About atoms and molecules plz!?
Answer:
Atoms: They are the smallest part of matter that may or may not exist independently. When atoms come together they form molecules.
Molecules: Many atoms combined either chemically or naturally form molecules. They are the smallest unit of matter that exist independently.
If my answer helped, kindly mark me as the brainliest!!
Thank You!!
A box of weight 280 N is being pulled to the right by a pulling force vec F of magnitude 50 N. The box is moving at a constant speed of 0.84 m/s . To make an accurate free-body diagram of the box, the letter f in the diagram above should be replaced with the label
Answer:
what diagram. I can't see any
this is the graph for this equation
(BRAINLIEST!) Does more momentum mean more force?
Answer:
no.
Explanation:
A current of 10 A moves through a circuit that contains multiple resistors in parallel. Which statement correctly describes the current through the resistors?
The current through all of the resistors will add up to 10 A.
The current through each resistor will be 10 A.
The current will be greatest through the resistor with the highest resistance.
The current will travel only through the resistor with the least resistance.
Answer:
The current through all of the resistors will add up to 10 A.
Explanation:
If an object starts from rest, what is its initial velocity?
Answer:
0 m/s
Explanation:
velocity= change in displacement/ time
at rest, the ball does not travel any distance
0/ t
=0
If you know the answer please answer the following question down in the picture below.
If a giraffe runs for 30 minutes at a speed of 40 miles per hour, how far will the giraffe run? Please help me
Answer:
20 mi
Explanation:
distance= rate* time
30 min*(1 hour)/ 60 min
.5 hours
(40 mi/hr)(.5 hr)
20 mi
12. If you cut a wooden block in half, the density will:
A) decrease
C) stay the same
B) increase
D) not enough information
Answer:
The density will decrease over time
Explanation:
It is like when you cut cheese and leave it out for a day of two it is crusty on the outside but when you cut it in half and leave it out for the same amout of time it is even crustier than the whole one.
Hope this helps
please tell me if I'm wrong and i will try to correct my answer
1 ) Starting from rest, a toy rocket accelerates at 12 m/sec/sec for exactly 4.0 seconds. It reaches 48 m/sec. Find the distance moved.
What does the mass of an object depend on? A:Force of gravity B: Temperature of the object C:Time taken for an event to occur D: Amount of matter that makes up the object
Answer:
The Answer is D
Explanation:
Brainliest pls
Answer: The answer is D) Amount of matter that makes up the object.
Explanation:
I hope this helps,
have a great day
i took the test!
Which describes density?
A. amount of volume for a given object
B. ability of an object to take up space
C. amount of mass in a given volume
D. ability of an object to float in water
Answer:
the answer to your question is C, Amount of mass in a given volume
Explanation:
Answer:
c
Explanation:
A student releases a marble from the top of a ramp. The marble increases speed while on the ramp then continues across the floor. The marble travels a total of 120cm in 3.40s.
What is the final velocity (in cm/s)
Answer:
35.2941176 cm/s
Explanation:
round it if you need too
Distance divided by time.