Answer:
486,750 kg*m/s
Explanation:
Momentum is mass*velocity
M = m*v
M = 8850kg*55m/s
M = 486,750 kg*m/s
The momentum of an 8850 kg medium truck that is traveling with a velocity of 55 m/s west on the highway is 486750 kg m / s.
What is momentum?Momentum is the result of a particle's mass and velocity. Being a vector quantity, momentum possesses both magnitude and direction. According to Isaac Newton's second equation of motion, the force acting on the particle equals the time rate of change of momentum.
According to Newton's second law, if a particle is subjected to a constant force for a specific amount of time, the result of the force and time (referred to as the impulse) is equal to the change in momentum.
Given:
The mass of the truck is, m = 8850 kg,
The velocity of the truck is, v = 55 m/s,
Calculate the momentum of the truck as shown below,
Momentum = m × v
Momentum = 8850 × 55
Momentum = 486750 kg m / s
Thus, the Momentum of the truck is 486750 kg m / s.
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What is the main incentive for using a traditional economy? A. profit B. stability C. progress D. economic equality Please select the best answer from the choices provided A B C D
Answer:
the answer is B, stability
Explanation:
A traditional economy is a system that is based on honorable customs, history, and beliefs. Tradition guides economic decisions, such as production and distribution. Traditional economies depend on agriculture, fishing, hunting, gathering or some combination above. They use exchange instead of money. Most traditional economies operate in emerging markets and developing countries. They are often in Africa, Asia, Latin America and the Middle East. But you can find scholarships from traditional economies scattered all over the world. Economists and anthropologists believe that all other economies started out as traditional economies. Thus, they expect the remaining traditional economies to evolve into market, command or mixed economies over time.
Answer:
d
Explanation:
NEED HELP ASAP PLEASE
Answer:
It is Nice A since it's temp increases slower
Explanation:
hope this helped
Ken Griffey, Jr's warehouse shot in the 1933 home run derby travelled 93 feet per second for 5 seconds. How far did he hit the ball?
Answer:
465 feet because 93*5 = 465, btw that was 1993 not 1933
Explanation:
Imagine that you drop an object of 10 kg, how much will be the acceleration and
how much force causes the acceleration?
If you do this on Earth, then the acceleration of the falling object is 9.8 m/s^2 ... NO MATTER what it's mass is.
If its mass is 10 kg, then the force pulling it down is 98.1 Newtons. Most people call that the object's "weight".
When living things use chemical reactions to break down food, some of the energy is transformed into
OA. sound.
OB. heat.
OC. light
OD.waste
waste.
Answer:
OB. Heat
Explanation:
I hope this helped :)
Most of the energy produced today from wood to energy systems is related to the industries that produce wood residuals (pulp and paper, lumber mills, etc).A. TrueB. False
Answer:
The correct answer is false
Explanation:
Most of the energy produced today from wood to energy systems is related to woods used as fuels which are referred to as "woodfuel". Woodfuel could be in the solid form (as in firewood/fuelwood, charcoal and wood pellets), liquid form (bio-oil and bio-ethanol) and gaseous form (wood gas).
Woodfuel in the form of firewood is majorly used all over the world, particularly in developing countries, for cooking and in developed countries for making fire to regulate temperature.
NOTE: This answer assumes the question refers to energy produced from wood all over the world and not restricted to a particular country or location.
carter found the rock shown in the picture below near a river
Answer:
there's no picture
Explanation:
and what would the question be anyways?
Answer:
what is the question
Explanation:
Do someone know the answer
When two things are the same temperature:
A They have the same number of molecules incorrect answer
B Their molecules stop moving incorrect answer
C Their molecules move at the same average speed incorrect answer
D Heat transfer between the two things stops
Answer:
its obviously D if all the other says "incorrect answer" XD
Explanation:
Answer:
d :D
Explanation:
which two conditions would result in the strongest electric force between charged objects
Answer:
A and B
Explanation:
The two conditions which results in the strongest electric force between charged objects are when they close together secondly, when the objects are conductors with balanced charges.
What is electric force ?Electric force is the force generated between charged bodies. There are both repulsive and attractive electric forces. Like charges exerts a force of repulson between each other. Unlike charges will exert an attractive force between each other.
According to Coulomb's law of electric forces is directly proportional to the magnitude of charges and inversely proportional to the distance between them. Thus , when the objects are closer the greater force is exerted between them.
Insulators does not allow flow of free electrons and the electric force between them is weak. Whereas, when two conductors of unlike charges exerts strong electrostatic force of attraction. Hence, option B and C are correct.
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. Are there human health risks from exposure (or overexposure) to X-rays? If so:
• describe the main risk(s)
• describe common sources of exposure (or overexposure)
• describe a technology, device, or behavior that can be used for protection, or to decrease exposure
- large doses may lead cells to be cancerous
- causes mutations in the DNA
describe common sources of exposure ( or overexposure ) :::- natural background radiation e.g. - cosmic rays
- medical radiation e.g. - CT scans & medical x - rays
- man - made radiation e.g. - airport security scanners
describe a technology, device, or behavior that can be used for protection, or to decrease exposure :::- x - ray beam filters
- digital x - ray detectors
- technologies reduce radiation doses in radiography &
mammography
hope that helps !!
Yes, there are human health risks caused by exposure to x-rays, X-rays may cause damage to cells in the body, and large doses may lead cells to be cancerous, causing mutations in the DNA.
What are X-rays?X-rays are electromagnetic waves with minimal wavelengths and high frequencies. Their wavelengths typically range from 10⁸ to 10¹² meters, and their corresponding frequencies are typically between 10¹⁶ and 10²⁰ hertz (Hz).
Charged particles are frequently accelerated (or decelerated) to produce X-rays; examples include an electron beam striking a metal plate in an X-ray tube and an electron beam circulating in a synchrotron particle accelerator or storage ring. The energy level spacing in the atoms can also be used to determine the discrete wavelengths of X-rays that highly excited atoms can emit.
X-rays may cause damage to cells in the body, large doses may lead cells to be cancerous, causing mutations in the DNA.
Common sources of exposure (or overexposure) :
Natural background radiation, e.g. - cosmic rays.Medical radiation, e.g. - CT scans & medical x-rays.Man-made radiation, e.g. - airport security scanners.The technology, device, or behavior that can be used for protection, or to decrease exposure are:
X-ray beam filters.Digital x-ray detectors.Technologies reduce radiation doses in radiography & mammography.To know more about X-rays:
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Does electric and magnetic objects both have north and south poles
Explanation:
hope this answer was helpful
A spring is hanging from the ceiling. When a 250 gram of mass is attached to the free end, the spring elongates by 5 cm. The spring constant (in N/m) is:
Answer:
k = 49 N/m
Explanation:
Given that,
Mass, m = 250 g = 0.25 kg
When the mass is attached to the end of the spring, it elongates 5 cm or 0.05 m. We need to find the spring constant. Let it is k.
The force due to mass is balanced by its weight as follows :
mg=kx
[tex]k=\dfrac{mg}{x}\\\\k=\dfrac{0.25\times 9.8}{0.05}\\\\k=49\ N/m[/tex]
So, the spring constant of the spring is 49 N/m.
The peripheral speed of the tooth of a 10-in.-diameter circular saw blade is 230 ft/s when the power to the saw is turned off. The speed of the tooth decreases at a constant rate, and the blade comes to rest in 17 s. Determine the time at which the total acceleration of the tooth is 130 ft/s2.
Answer:
The time is [tex]t_r =21.58 \ s[/tex]
Explanation:
From the question we are told that
The diameter of the circular saw is [tex]d = 10 \ in = \frac{10}{12} = 0.833 \ feet[/tex]
The peripheral speed is [tex]u = 230 \ ft/s[/tex]
The time taken for the blade to come to rest is t = 17 s
The total acceleration of the tooth considered is [tex]a = 130 \ ft/s^2[/tex]
Generally the radius of the blade is mathematically represented as
[tex]r = \frac{0.833}{2}= 0. 4165 \ feet[/tex]
Generally the tangential acceleration of the blade is mathematically represented as
[tex]a__{t}} = \frac{v - u}{t}[/tex]
Here v is the final velocity of the tooth of the blade which is zero since the blade came to rest
so
[tex]a__{t}} = \frac{0 - 230}{ 17}[/tex]
=> [tex]a__{t}} = - 13.53 \ ft/s^2[/tex]
Generally the total acceleration of the tooth of the blade is mathematically represented as
[tex]a = \sqrt{a_t^2 + a_r^2}[/tex]
Here [tex]a_r[/tex] is the radial acceleration , now making [tex]a_r[/tex] the subject of the formula we have that
[tex]130= \sqrt{13.56 ^2 + a_r^2}[/tex]
=> [tex]a_r = \sqrt{130^2 -(- 13.56)^2}[/tex]
=> [tex]a_r = 129.3 \ m/s^2[/tex]
Generally radial acceleration is mathematically represented as
[tex]a_r = \frac{v_r^2}{r}[/tex]
Here [tex]v_r[/tex] is the velocity at which the total acceleration is 130 ft/s2.
=> [tex]v_r = \sqrt{a_r * r }[/tex]
=> [tex]v_r = \sqrt{129.3 * 0.4165 }[/tex]
=> [tex]v_r = 7.34 \ m/s[/tex]
Generally the time at which the total acceleration is 130 ft/s2. is mathematically represented as
[tex]t_r = \frac{7.34 - 300}{a_t}[/tex]
=> [tex]t_r = \frac{7.34 - 300}{-13.56}[/tex]
=> [tex]t_r =21.58 \ s[/tex]
A heavy bank-vault door is opened by the application of a force of 300 N directed perpendicular to the plane of the door at a distance of 0.80 m from the hinges. What is the torque?
Question 4 options:
1.) 120 Nm
2.) 240 Nm
3.) 375 Nm
4.) 300 Nm
Answer:
240Nm
Explanation:
Given parameters:
Force on the bank vault = 300N
Distance to the plane of the vault = 0.8m
Unknown:
Torque = ?
Solution:
Torque is the component of force that causes an object to rotate about an axis;
Torque = Fr x sinФ
Here Ф = 90°
r = distance
Torque = 300 x 0.8 x Sin 90°
Torque = 240Nm
Harnessing tidal power would involve:_______.a) letting in-flowing and/or out-flowing tide flow through turbines in a dam.b) huge floats mechanically hooked to generators.c) electrodes in the water.d) bioluminescence of marine organisms.e) all of the above
Answer:
a) letting in-flowing and/or out-flowing tide flow through turbines in a dam.
Explanation:
Tidal power makes use of the energy from the tidal force and wave action in order to generate electricity. it is a predictable source of energy.
Tidal Barrages
The system allows tides to enter, seawater flows via the dam and is trapped into the basin when the tides subside and system’s gates close.
When the tides start to move out, the gates in the dam are opened up this consist of turbines and water begins to flow out, hitting the turbines this eventually turn to produce energy.
Power is produced when the tidal range, which is the difference between low and high tide, has to be more than 5 meters.
Rocks that do not allow water to pass through them are said to be impermeable. True or false?
Answer:
true plz mark me as the brainliest
Explanation:
Answer:
TrueSome rocks have pores in them, which are empty spaces. If these pores are linked then fluid can flow through the rock.However,if the pores are not linked,then no liquid can flow through the rocksWhen pores are not linked,the rock is permiable.n
A student was traveling to see his grandmother who lives 15 miles north oh his home he started from rest and maintained a pace of 4 m/s before stopping at his grandmother's house for lunch which of the following best describes the speed, velocity and acceleration of the student's walk?
Explanation:
Given parameters:
Distance = 15miles north = 24140.2m
Initial velocity = 0m/s
Final velocity = 4m/s
Unknown:
Speed, velocity and acceleration = ?
Solution:
The speed is the distance divide by time. It is a scalar quantity and has no directional attribute.
Speed = [tex]\frac{distance }{time}[/tex]
The speed of the student is 4m/s
Velocity is the displacement divided by time. It is a vector quantity which specifies the direction and magnitude;
Velocity = [tex]\frac{displacement}{time}[/tex]
The velocity of the student is 4m/s due north
Acceleration is the change in velocity with time;
To find the acceleration, we use
v² = u² + 2as
v is the final velocity
u is the initial velocity
a is the acceleration
s is the distance
4² = 0² + 2x a x 24140.2
a = [tex]\frac{16}{2 x 24140.2}[/tex] = 0.00033m/s²
5. The most dangerous place to use electrical equipment is?
A) indoors
B) outdoors
near water
D
near other electrical equipment
Answer:
c near water
Explanation:
because well let's say you were out in the rain or ur at an outdoor pool swimming and all of a sudden lighting strikes the water while ur in it...... then you would barely be living bc electric touched water
30 points! to who helps me out
2 A box of mass 3 kg is initially at rest. Find the kinetic energy acquired by the box if
a force of 5 N is applied to it for 5 s.
Answer: if 5N is applied for 5 seconds then it would move at a constant speed for one second then decrease in speed
A.complete the following sentences with your own result or condition
Example; if i had woken up earlier today, I would have gone to the gym
________________________
1. I would have lent you some money__________________
2. If I had known it was going to rain,______________
3. If she hadn't missed so many classes,_______________
4. If yesterday had been a holiday,______________
5. I would have called you, ____________
1. If I hadn't bought that car yesterday.
2. I would have never bought the tickets for today..
3. She wouldn't have gotten suspended.
4. We could've worked on our project.
5. but I was in the shower.
If an object is traveling in a straight line moving East then the following is true.
A distance is equal to displacement
B distance is greater than the displacement
C distance is less than the displacement
D distance is a value and displacement is equal to 0
Answer:
A distance is equal to displacement
Explanation:
An object traveling in a straight line moving East will have its displacement value to be equal to the distance.
Displacement is the distance traveled in a specific directions.
Distance is the total length of path traveled.
The displacement of the object is the value of the distance due east.
The distance is the value of the length of path covered.
Explain how star clusters help us understand the stages of stellar evolution
Answer: More specifically, the term is typically defined as a period when gross domestic product (GDP) declines for two consecutive quarters. This prevailing line of thought was popularized by economist Julius Shiskin in 1974.
Explanation:
plz give me brainliest
What is the density of the paint if the mass of a tin containing 5000 cm3 paint is 7 kg. If the mass of the empty tin, including the lid is 0.5 kg.
We are given:
Mass of the Paint bucket (with paint) = 7000 grams
Mass of the paint bucket (without paint) = 500 grams
Volume of Paint in the Bucket = 5000 cm³
Mass of Paint in the Bucket:
To get the mass of the paint in the bucket, we will subtract the mass of the bucket from the mass of the paint bucket (with paint)
Mass of Paint = Mass of Paint bucket (with paint) - Mass of the paint Bucket (without paint)
Mass of Paint = 7000 - 500
Mass of Paint = 6500 grams
Density of the Paint:
We know that density = Mass / Volume
Density of Paint = Mass of Paint / Volume occupied by Paint
Density of Paint = 6500/5000
Density of Paint = 1.3 grams / cm³
What is the force acting on a boulder with a mass of 10 kg and an acceleration of 2 m/s/s?
Answer:
20 NExplanation:
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 = 10 × 2
We have the final answer as
20 NHope this helps you
A ball is thrown vertically upwards from the ground with an initial velocity of 50m/s. What is the total time by the ball to get its maximum height? (take g=10)
A. 500s
B. 50s
C. 5s
D. 0.5s
Explanation:
initial velocity (u) = 50m/s
final velocity (v) = 0m/s
i.e the ball stops for a while at its maximum height.
g = 10m/s^2
from the 1st equation of vertical upward motion:
v = u - gt
hence t = (v + u)/t
t = (0 + 50)/10
t = 50/10 = 5s.
C. 5s.
Answer:
c
Explanation:
(a) Initial velocity of ball (u)=50m/s, acceleration of ball =−g,
final velocity at the highest point (v)=0
So applying the 3rd equation of motion we get:
v
2
=u
2
−2gh
max
⇒0=50
2
−2×10×h
max
⇒h
max
=
20
2500
=125m
(b) Let the time required to reach max height be t. Then applying 1st equation of motion we get:
v=u−gt
⇒0=50−10t
⇒t=5s
(c) Let speed at half of max height be V then:
V
2
=50
2
−2g
2
125
⇒V
2
=2500−1250=1250
⇒V=
1250
=35.35m/s.
15 to who helps me out!
Answer:
a. same
b. less
c. same
d. same?
Explanation:
the mass will always be the same no matter where it is. the weight however depends on the gravity.
The elements of art were created by artists based on things we see in real life. For example, texture on trees or the order of colors in the rainbow.
Question 1 options:
True
False
Answer:
true
Explanation:
just took the best its true
Answer:
True
Explanation:
I took the quiz and got it correct
Anyone please help me with this question ASAP
Answer:
increases
Explanation:
it would have to work harder to get to two points together
