Answer:
Friction of the road on the motorcycle in the opposite direction
Explanation:
khan academy
4. A 5.00-kg sled starts at rest and accelerates down a 45.0° incline. The coefficient of
kinetic friction between the mass and the incline is .185.
a) What is the value of the of the acceleration of the sled
Answer: [tex]5.64\ m/s^2[/tex]
Explanation:
Given
mass of sled m=5 kg
Elevation [tex]\theta =45^{\circ}[/tex]
[tex]\mu _k=0.185[/tex] (coefficient of kinetic friction)
Friction will oppose the motion of the sled while sled weight sin component helps it to move down the incline
[tex]W\sin\theta-F_r=ma\\where\\W=weight(mg)\\F_r=Friction(\mu_kmg\cos\theta)\\a=acceleration[/tex]
Substituting values
[tex]mg\sin \theta-\mu_kmgcos\theta=ma\\g\sin \theta-\mu_kg\cos \theta=a\\a=g(\sin 45^{\circ}-0.185\times \cos 45^{\circ})\\a=5.64\ m/s^2[/tex]
Why is a protective apron or lab coat important to use when working with acids?
Acids conduct electricity and contact could cause a shock.
Acids react with lipids and can cause damage to skin tissue.
Acids break down fabrics and can cause burns if the acids are strong.
Acids have a slippery feel and could result in a fall.
Answer:
Acids break down fabrics and can cause burns if the acids are strong.
Explanation:
A protective apron or lab coat is important when working with acids because acids break down fabrics and can cause burns if the acids are strong.
An acid is a substance that interacts with water to produce excess hydroxonium ions in an aqueous solution. A strong acid ionizes completely in solution. When they come in contact with a fabric, they break them down violently. So, if they come in contact with the skin, it causes a violent break down of body tissues. The apron acts a protective layer.Answer:
C
Explanation:
I got it right
Tom drives on a highway and never changes his speed for the whole journey. He drives for 300 miles and it takes him 5 hours. What is Tom's speed on the highway?
Answer:
QESARDFRGTSRTATFREVERSRvrvqwqv
Explanation:
vfqfvcafbraf w rfdsd AEWvd a
Which diagram shows a situation that would not produce an electric current in the wire?
Answer:B
Explanation:
A P E X
The diagram in which there is no current in the electric wire is B, the reason behind that it is not connected with the battery.
What is Electrical energy?When put in an electromagnetic field, charged matter experiences a force due to the fundamental property of electric charge. Positive or negative electrical ions are possible.
When two charge are in opposition to one another, they repel one another. The term "neutral" refers to an object has no net charge. The early understanding of the way charged particles interact is now referred to as classical electrodynamics, and it is still true for issues that do not demand for taking into account quant phenomena.
Electrical charge is a preserved attribute, meaning that the net charged of an isolated system—that is, the sum of the positive and negative charges—cannot change. Particles at the subatomic level carry an electric charge.
The second diagram from the option will have no current in it because the wires are not connected with the battery, so the flow of current will not take place.
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How do an object's mass
and velocity relate to its
momentum?
Which type of wave forms at the boundary between air and water when you
drop a rock into a pond?
A. Electromagnetic
B. Surface
C. Longitudinal
D. Transverse
decreases, gravitational, increases, kinetic, potential, thermal
A car driving along a road has energy in its _______ store. If the car drive faster this store_____. If the car drives up a hill, energy is transferred to its ____ store. If the care brakes, the kinetic store _____.
Which of the following can sometimes be zero for a moving body i average velocity ii distance travelled iii average speed iv displacement
Answer:
displacement can be zero...because it only care about initial and final positionsWhich tool can easily separate sand and iron filings?
O oil
O magnet
O water
Answer:
A magnet would be the answer
What causes wind to follow patterns
Answer: Wind follows a pattern because the Earth is spinning in one motion. If we were spinning in one way then another we would have one day go by then the spinning cycle would change and we would have to go through that day all over again, it would not be logical because then we would be in the same season as well, we would be in one season for the rest of our lives until we died.
I don't know if this was helpfull or not but I hope it was somewhat close to helpful? If it is not then please do not report this, I am sorry if this was the least bit helpful.
HAVE A NICE DAY! :)
What is radioactive dating? How is it used to determine age of something?
answer 2 question basically please Help!!!
Answer:
Technique of comparing abundance ratio between radioactive isotopes to a reference isotope to determine the age of a material called radioactive dating. It determines the age by having a more abundance of isotopes in the cellular being.
explain why smoke particles in air move about faster if the temp of the air is increased??
Answer:
kinetic energy increases with the energy which causes the particles to move faster resulting in increases collision rates and rate of diffusion.
Explanation:
The increase in temperature of the air causes the air molecules to have more kinetic energy, which leads to more frequent and forceful collisions with the smoke particles. This, in turn, causes the smoke particles to move faster through the air.
What is kinetic energy?Kinetic energy is the energy an object possesses due to its motion. Any object that is in motion has kinetic energy, and the amount of kinetic energy it has depends on its mass and velocity.
The formula for calculating kinetic energy is:
KE = 1/2 × m × v²
where KE represents kinetic energy, m represents the mass of the object, and v represents the velocity of the object.
Here in the question,
Smoke particles in the air move around due to collisions with air molecules. When the temperature of the air increases, the average kinetic energy of the air molecules also increases. This means that the air molecules are moving faster and colliding more frequently with the smoke particles.
The smoke particles themselves do not have an increase in kinetic energy, but they do receive more energy from the collisions with the air molecules. This extra energy causes the smoke particles to move faster and more erratically, making them more dispersed throughout the air.
In addition, when air is heated, it becomes less dense. This means that there are fewer air molecules in a given volume of air. As a result, the smoke particles have more space to move around and collide with air molecules, which further contributes to their increased speed and movement.
Therefore, increasing the temperature of the air increases the speed and frequency of collisions between the air molecules and smoke particles, leading to the smoke particles moving faster and more widely dispersed throughout the air.
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a set of related measures or activities with a particular long term aim
Answer:
program explanation
Explanation:
program explanation
The set of activities having a long-term aim should be a program.
What is the program?A program refers to a set of instructions that a computer follows in order to perform a specific task. At the time When you program a computer, you provide it a set of instructions to make it able to perform a particular task.
So here the program should be considered.
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A laser beam is directed at the Moon, 380,000 km from the Earth. The beam diverges at an angle of \thetaθ of 0.8 x 10-5 rad. What diameter spot, in m, will it make on the Moon?
Answer:
3040 m
Explanation:
The formula to apply here is ;
d=∅*r where
d is the diameter of the spot , ?
∅ is angle of divergence in radians, = 0.8 * 10⁻⁵rad
r is distance of Moon from Earth, =380,000 km
Applying the formula as;
d=∅*r
d= {0.8 *10⁻⁵} * 380,000 * 1000
d= 3040 m
define time in short answer
Answer:
measurable period during which an action, process, or condition exists or continues
Explanation:
Answer:
Time is the indefinite continued progress of existence and events that occur in an apparently irreversible succession from the past, through the present, into the future.
Explanation:
hope it helps...
1. Identify the phase or phases of matter (solids, liquids, and gases) that
apply to each statement. More than one phase of matter may apply to each
statement.
a. Molecules do not move around, but vibrate in place
b. Has volume but no particular shape
c. Flows
d. Molecules break free of intermolecular forces
e. Does not have a volume or shape
f. Molecules can move around and switch places, but remain close
together
Answer:
a: solid
b: liquid
c: liquid
d: gas
e: gas
f: liquid
Explanation:
According to the forces of attraction, the states of matter in each case serially are as follows: solid, liquid,liquid,gas,gas and liquid respectively.
What is matter?Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume .Matter is composed up of atoms which may or not be of same type.
Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.
The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.Matter can neither be created nor destroyed rather is conserved at end of chemical change.
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An apple in a tree has a mass of 0.21 kg. If it is 7.2 meters above the ground, how much potential energy does it have?
Answer:
14.8J
Explanation:
PE=MGH
M=0.21
G=9.8m/s
H= 7.2 m
0.21x7.2x9.8= 14.8176 J
Would a ship in Lake Ontario (fresh water) float higher or lower in the water than in the Atlantic Ocean (salt water)?
Atlantic Ocean (salt water)
how would a position-time function look like for linearly increasing negative velocity regions?
Answer:
Hmmm
Explanation:
Here what I know... If a function gives the position of something as a function of time, the first derivative gives its velocity, and the second derivative gives its acceleration. So, you differentiate position to get velocity, and you differentiate velocity to get acceleration. where t is in seconds and H(t) is in inches.
Does this help?
A man standing on top of a 30 m tall building throws a brick downwards with a velocity of 12 m/s. Determine the speed of the brick just before it hits the ground.
Answer:
27.1m/s
Explanation:
Given parameters:
Height of the building = 30m
Initial velocity = 12m/s
Unknown:
Final velocity = ?
Solution:
We apply one of the kinematics equation to solve this problem:
v² = u² + 2gh
v is the final velocity
u is the initial velocity
g is the acceleration due to gravity
h is the height
v² = 12² + (2 x 9.8 x 30)
v = 27.1m/s
How much water is displaced by a solid object with a volume of 9 cm3 that is completely submerged in the water?
Given :
An object with a volume of 9 cm³ is completely submerged in the water.
To Find :
How much water is displaced by the object.
Solution :
According to Archimedes' principle, the amount of volume displaced of fluid when an object is fully and partially submerged into that is equal to the volume of the object below the surface of liquid.
Now, it is given that object is fully submerged into water.
Therefore, volume of water displaced by the object is 9 cm³.
Please help ASAP I’ll give brainly and 10 points
how does light travel?
plaza help
Answer:
your answer will be the letter B
all 3 of these examples (Volt, Newton, Tesla) are units that come from other metric units true or false?
Answer:
False
Explanation:
because Only Volt and Newton are units come from metric units, however, the Tesla is not come from Metric units.
All I need help on, is the first one on the top row. Thanks :))
Answer:
1a)40-27=13
1b) heat
1c)efficiency = W out/W in
so 27/40= 67%
A horizontal net force is exerted on a 2.0 kg object at rest. The object starts at x=0 m and travels 8.0 m along a horizontal frictionless surface.
What is the velocity of the object
Round answer to 2 significant digits
____ m/s
There's a constant force of 35 N exerted on the object of mass 2.0 kg, so it undergoes an acceleration a of
35 N = (2.0 kg) a → a = 17.5 m/s²
The object travels 8.0 m, so that it attains a velocity v of
v ² = 2 (17.5 m/s²) (8.0 m) → v ≈ 16.73 m/s ≈ 17 m/s
The velocity of the 2 Kg object which travels 8 m along the horizontal frictionless surface is 17 m/s
How to determine the acceleration Force (F) = 35 NMass (m) = 2 KgAcceleration (a) =?a = F / m
a = 35 / 2
a = 17.5 m/s²
How to determine the velocity Initial velocity (u) = 0 m/sDistance (s) = 8 mAcceleration (a) = 17.5 m/s²Final velocity (v) =?v² = u² + 2as
v² = 0² + (2 × 17.5 × 8)
v² = 280
Take the square root of both side
v = √280
v = 17 m/s
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In a ballistics test at the police station an officer
shoots a 6.0g bullet at 350m/s into a wooden block. If
it takes 1.8ms for the bullet to stop, what is the
average force acting on the bullet as it stops? (Hint:
ms stands for milliseconds.)
How will recreation be affected by sea level rise?
Answer:
Scientists predict that sea levels could rise up to six-feet by 2100. An increase this large will swallow beaches—impacting public access, beach recreation, and healthy ecosystems. ... With less sand beach-goers will have a completely different recreational experience in the future.
Explanation:
Can someone do this pls! I’ll give you brainilest and all my points!
Answer:
15N South
Explanation:
It is 15N South because the two 15N cancel out each other and then you subtract 5N from the 20N and then you get left with 15N. and the 20N is bigger and it is going South.So the answer is 25N south.
Answer:
the answer would be 15N south
Two objects are shown below. One is neutral and the other is negative. What do you predict would happen?
Answer:
The body becomes a positive charged body.
Explanation:
Given that two objects are shown below. One is neutral and the other is negative. What do you predict would happen?
According to the law of static electricity, like charges repel each other while unlike charges attract each other.
Since one of the object is neutral and the other one is negative, there will neither attraction nor repulsion between them.
Also, according to Electrostatic induction, the neural body can be charged and becomes positive.
The negative body will attract all the positive charges to its side, and repel all the negative charges to the other side. If the body is touched at the other end, the whole negative charges will be earthed and the body will become a positive body.
