(v) Which of the following is
responsible for wearing out of bicycle
tires?
(a) Muscular force
(b) Magnetic force
(c) Frictional force
(d) Electrostatic force
What changes and challenges have you noticed in your relationship with your friends? Write a paragraph
explaining your answers.
Answer:
While in a relationship, friends can influence you to love your partner in different ways, sometimes because of how they also relate with their partners or what they say to you about your partner or the advice they give about and in your relationship.
Explanation:
Show the mathematical equation for
calculating the number of Neutrons an
atom has using its Atomic Number and
Atomic Mass
Answer:
ysyywhwywywyyeueueuwieheheuhrr9
Which strategies maximize recovery following an intense bout of resistance training?
(Select all that apply.)
replenishing low blood sugar with carbohydratesreplenishing low blood sugar with carbohydrates , ,
stretching muscle groups, holding each stretch for 30 seconds or morestretching muscle groups, holding each stretch for 30 seconds or more , ,
allowing muscle groups 8–12 hours of rest before training againallowing muscle groups 8–12 hours of rest before training again , ,
drinking 20–24 ounces of water for every pound of body mass lostdrinking 20–24 ounces of water for every pound of body mass lost , ,
Answer:
The answers are:
a) drinking 20–24 ounces of water for every pound of body mass lost,
b) stretching muscle groups, holding each stretch for 30 seconds or more, and
c) replenishing low blood sugar with carbohydrates
Explanation:
I just took the exam and got this correct.
Can someone plz check if what I typed is good :)
An Earthquake has caused this, I know this because of the rubble. I know it's not a tornado or something similar because this building has collapsed, not blown away neither has it been lifted a few feet from where it used to be and the building next to it is damaged but still standing. Many earthquakes that are violent enough have the power to make buildings collapse, because of the vibration of the ground. Earthquakes are usually caused when rock underground suddenly breaks along a fault. So an earthquake is actually the result of sudden releases of high energy that take place from the crust of Earth. Since an earthquake leads to travelling waves of high intensity, such waves can easily give a jolt or shock to any building. So in conclusion I think an earthquake caused this in the picture because many earthquakes that are violent enough have the power to make buildings collapsed, because of the vibration of the ground.
Answer:
Explanation:
A fast car (Car A) and a slow car (Car B) both travel the same distance. Which car takes more time to do this? Explain.
Answer:
Input work is the work done on a machine as the input force acts through the input distance. This is in contrast to output work which is a force that is applied by the body or system to something else. Output work is the work done by a machine as the output force acts through the output distance.Jan 15, 2020 whhdbd dhd dvd s bs sbs shs shs sh s
Explanation:
avsvsyxsgzvs zvx shs dhx xbx dhd dvd dj
a car travels 15 miles in 30 minutes . calculate the average speed
Answer:
15/30 = .5 miles/m
Explanation:
v = d/t
velocity = 15 / 30
What is the similarities and differences of the particle motion in solid and liquid
Answer: Differences: Solids have particles that are tightly packed and they form a pattern. In this case, they move and vibrate in place. On the other hand, liquid particles are close together but they have an irregular arrangement. The spaces between the particles allow them to move freely.
Explanation:
Particles in solids are arranged in a pattern and are closely packed. In this instance, they remain stationary and vibrate. However, despite being close together, liquid particle arrangements are asymmetrical. The particles can travel freely because of the voids between them and the similarity is both solid and liquid has some shape, but gas does the random movement in the container.
What is Particle motion in Solid, Liquid and Gas?In solid the particles are tightly packed with each other, so there will be no such movement by the particles it means that there the particles have very less kinetic energy. Solids have definite shape and size, and they are incompressible in nature, and they are tough and rigid as well.
In liquid the particles are lightly packed with each other due to which there is some movement in the particles it means that the particles have some kinetic energy. The liquids are compressible in nature. They do not have a specific shape, but they can take the shape of a container where it is filled.
Liquids are fluid in nature.
In gases, there is so much of distance between particles due to which the particles do random movement, and they have high kinetic energy. They do not have any shape and size, but they are highly compressible as compared to solid and liquid. They also take the shape of the container where they filled.
To get more information about Particle motion :
https://brainly.com/question/11155407
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what factors limit the accuracy of a potentiometer and what was the objective of reversing the terminals of the cell
Explanation:
"The accuracy of a potentiometer can be increased by decreasing the potential gradient across the potentiometer wire, and this can be achieved by increasing the length"
The factors that are affecting/limiting the accuracy of the potentiometer are:
The specific resistance of the material of the potentiometer wire.The potential gradientThe current passing through the potentiometer wire. Area of a cross-section of the wire Internal temperature.
The objective of reversing the terminals of the cell
If the jockey of the potentiometer is pressed for a long time, joule heating sets in, so that reversing the terminals of the potentiometer will prevent the resistance due to joule heat from being added to the measured resistance, ultimately preventing unwanted resistance
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What is the equation for work?
Work = force + distance
Work = force / distance
Work = force - distance
Work = force * distance
Answer:
I believe it's work=force*distance
a man of mass 50 kg climbs up stairs each of height 0.2 m in 20 seconds .calculate the power of the man
A car travels 28.0 km on a road that is 16.5 degrees east of north. What are the horizontal and vertical components of its displacement?
Answer:
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Explanation:
Can you help me with this pls
Answer:
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Throwing a ball with more force to increase acceleration is an example of which of Newton’s Laws?
Answer:
Its the 2nd law of motion
Explanation:
Because it talks about force and acceleration
Throwing a ball with more force to increase acceleration is an example of Newton’s 2nd law of motion.
What is Newton's second law of motion?The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.Newton’s second law states that the acceleration of an object depends upon two variables – the net force acting on the object and the mass of the object. The acceleration of the body is directly proportional to the net force acting on the body and inversely proportional to the mass of the body. This means that as the force acting upon an object is increased, the acceleration of the object is increased. Likewise, as the mass of an object is increased, the acceleration of the object is decreased.To learn more about Newton’s second law, refer to: https://brainly.com/question/19030143
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Science ck-12 green house effect
Answer:
what about it i need more info
Explanation:
Explain how do global winds impact weather in an area?
Answer:
As the warmer air over the equator rises, colder air from the poles rushes toward the equator to take its place. Global winds push air masses around Earth and bring changes in the weather. In the United States, global winds called the prevailing westerlies push air masses from west to east.
Explanation:
Answer:
As the warmer air over the equator rises, colder air from the poles rushes toward the equator to take its place. ... Global winds push air masses around Earth and bring changes in the weather. In the United States, global winds called the prevailing westerlies push air masses from west to east.
Explanation:
A dog barks to alert his owner. What is the medium for the sound waves produced by the dog barking?
Answer:
The medium for the sound waves produced by the dog barking is the air
Explanation:
Sound waves are a form of mechanical waves such that it moves from one point to another by the vibration, back and forth of the medium particles from one layer to the next, thereby the particles of the medium remain in the same location and only the wave energy is propagated
The medium which has particles that vibrate back and forth in order to transmit the barking of the dog is the air.
In a science fiction movie, when a spaceship explodes the vibrations destroy a nearby spaceship *
a)The script is fine as written
b)Rewrite the script since sound cannot travel in a vacuum
c)No one is actually in space to hear the sound
d)There is no energy in a sound wave so no explosion
Answer:
d
Explanation:
In a series circuit, an ammeter shows the current leaving the positive end of a cell is 0.5A. What current flows into the negative end of the cell?
Answer:
0.5A as in a series circuit the current is the same everywhere
Explanation:
A girl and her bicycle have a total mads of 42 kg. At the top of the hill her speed is 4 m/s. The hill is 14.3m high and 112m long. If the force of friction as she rides down the hill is 20N, what us the speed at the bottom.
Answer:
13.78 m/s
Explanation:
Given that:
The mass of the girl & her bicycle = 42 kg
The speed at the top of the hilll= 4 m/s
The height of the hill = 14.3 m
The length of the hill (distance) = 112 m
The frictional force = 20 N
To find the speed at the bottom of the hill; we need to carry out the following processes.
The workdone by gravity = mass × acceleration due to gravity × Δh
= 42 × 9.8 × ( 14.3 - 0 )
= 5885.88 joules
The workdone by the friction = Force × distance = - 20 × 112 (since she is riding down the hill)
The workdone by the friction = -2240 Joules
The initial Kinetic friction = 1/2 mv²
= 1/2 × 42 × 4²
= 336 Joules
The final kinetic energy = Initial Kinetic energy + total work
The final kinetic energy = (336 + 5885.88 - 2240) Joules
The final kinetic energy = 3981.88 Joules
Using the final kinetic energy = 1/2 mv²
3981.88 = 1/2 × 42 × v²
3981.88 = 21 v²
v² = 3981.88/21
v² =189.61
v = [tex]\sqrt{189.61}[/tex]
v = 13.78 m/s
Therefore, the speed at the bottom = 13.78 m/s
why is area called scalar quantity
Answer:
area is called scalar quantity because there is no need of direction to define and also follow the algebric summation ..... is your answer
A canoe accelerates 3 m/s/s when a force of 6 newtons is applied to it. What is the mass of the canoe and passengers?
Electrons have a mass of about _____.
A. 2,000 times that of a neutron
B. 1/2,000 that of a proton
C. the same as a neutron
D. the same as a proton
Answer:
B. 1/2,000 that of a proton
Explanation:
the mass of an electron is 9.1093837015 × 10−31 kg, this in only 1/2,000 that of a proton.
Answer:
D. the same as a proton
Explanation:
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A golf ball is sitting still on the grass three feet from the hole. Which statement describes the golf ball's motion? * The golf ball has a constant velocity. The golf ball is accelerating.
Answer:
The golf ball has a constant velocity
Explanation:
Should the practice of lining waterways with concrete continue?
Answer:
Yes, the practice of lining waterways with concrete should continue.
Explanation:
These concrete linings create more laminar flow along the waterways, and in turn, this can reduce erosion. When erosion is reduced, this prevents damage to homes and roads, and loss of land.What would be the cause of bubbles appearing on the surface of a leaf? A.Photosynthesis is occurring and bubbles of oxygen gas are being absorbed into the plant leaf from the water. B.Photosynthesis is occurring and bubbles of oxygen gas are being released into the surrounding area.
Anna is sitting in a moving cart and throws a ball straight up. Theoretically, the ball should land in the cart, but it lands on the ground a little before the cart. What is the reason for the difference in the ranges of the ball and the cart?
Answer:
Reason for the difference in the ranges of the ball and the cart:
"the average speed of the cart is less than the instant speed of the cart at the time of throwing the ball".
Explanation:
Assuming that the air friction is negligible.
Given that the ball lands on the ground a little before the cart.
So, the range of the ball is more than the range of the cart in the same time interval.
Let the instant speed of the cart is v m/s at the time of throwing the ball in the vertically upward direction, so the speed of the ball in the horizontal direction = v m/s.
Let t be the total time of flight of the ball.
As the gravitational force is acting in the downward direction so it will not change the horizontal velocity of the ball.
So, the range covered by the ball [tex]= vt[/tex] m.
Let u be the average speed of the cart for the time t s (same as the time of flight of ball).
So, the distance by the cart [tex]= ut[/tex] m
As the range of the ball is more than the range of the cart in the same time interval, so
[tex]vt > ut \\\\\Rightarrow v>u.[/tex]
So, the reason for the difference in the ranges of the ball and the cart is "the average speed of the cart is less than the instant speed of the cart at the time of throwing the ball".
Which statement best describes the importance of joints in the roadways of Bridges ?
a. Joints strengthen the roadway to support cars and trucks
b. Joints allow the roadway to expand and
contract with varying outside temperatures
c. Joints allow the roadway to expand and contract as cars put force on the bridge
d. Joints allow the bridge to be built in smaller, easier to assemble pieces.
A football is kicked at ground level with a speed of 17.0 m/s at an angle of 40.0º to the horizontal. How much later does it hit the ground and what is its maximum height?
Answer: well...
Explanation: Suppose you walk 18.0 m straight west and then 25.0 m straight north. Show that the order of addition of three vectors does not affect their sum . launched at ground level with an initial speed of 50.0 m/s at an angle . (b) What is the maximum height reached by the arrow along its .
Which force keeps an object moving in a circle? centripetal force fluid friction inertia momentum
Answer:
Any object moving in a circle (or along a circular path) experiences a centripetal force. That is, there is some physical force pushing or pulling the object towards the center of the circle. This is the centripetal force requirement.
Explanation:
