Because of centripetal (spinning) forces, the earth.
Answers
Because of centripetal (spinning) forces, the Earth maintains its rotation and orbit.
What is centripetal forces?The theory behind centripetal force underscores its immense significance when it comes to moving objects along curved paths. Essentially, this powerful energy source acts continuously at right angles to maintain an inward pull towards the center point of any given circle - be it planetary orbits or playful rides such as merry-go-rounds.
Centripetal force serves an essential purpose that helps ensure automobiles remain on track while navigating sharp turns without losing control - truly remarkable!
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Related Questions
Melanie is given an unknown substance by her teacher. Melanie’s teacher tells her that the substance has a bitter taste. Melanie also observes that the substance is slippery. These properties indicate that the substance may be which of the following?
Answers
Answer:
base
Explanation:
I hope this helps
Answer:base
Explanation:
A generator is based on the principle of __ (electric field, electromagnetism, magnetic field, strength) in a generator a magnet is moved near a coil of wire. The magnets__(same options) also moves. This motion creates__(same options) Electrons flow through the coil of wire as a result. One way to increase the flow of the electrons is to move the__ (same options)
Answers
1) electromagnetism
2) magnetic field
3) electric field
4) strength
How is electromagnetism applied in generator?Electromagnetism is the fundamental principle behind the functioning of an electric generator. An electric generator works on the principle of electromagnetic induction, which is the process of generating an electric current in a conductor by exposing it to a changing magnetic field.
In a generator, a wire coil is rotated inside a magnetic field, which induces an electric current in the coil. The magnetic field can be created by a permanent magnet or an electromagnet. An electromagnet is made by passing an electric current through a coil of wire, which generates a magnetic field.
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Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.110 kg, initially moves to the right at a speed of 4.60 m/s, while the second block, of mass 0.220 kg, is initially to the left of the first block and moving to the right at 6.90 m/s. Find the final velocities of the blocks, assuming the collision is elastic.
Answers
Answer:
The final velocities of the blocks are 3.00 m/s and 8.50 m/s, respectively.
An elephant ran 300 meters in 20 seconds, what was his speed?
Answers
Answer: 40 km/hr ( c )
Explanation:
Distance =20 km
Time =30 min=
60
30
hr=
2
1
hr
∴ Speed =
time
Distance
=
(
2
1
hr)
20 km
⇒ Speed =40 km/hr
Option (C) is correct.
What force acts between Earth and the moon?
O gravity
O mass
O motion
Onewtons
Answers
Answer:
A. gravity
or gravitational force
Mark as brainliest if this helped
Peace
what would happen to the temperature on mercury during the day if a sunspot was directly in line with it's surface?
Answers
Answer:
mind-bogglingly hot
Explanation:
If a sunspot were pointed right at Mercury in this way, the planet would become even more mind-bogglingly hot. Sunspots look dark in our visual spectrum, so we might suspect that they are colder (or at least less hot) than the rest of the Sun; but in fact, they are hotter.
A weight gain of 1.49 lb (0.68 kg) per month is expected from birth until which month?
Answers
A weight gain of 1.49 lb (0.68 kg) per month is expected from birth until 6 months
A newborn grows roughly one inch every month throughout the first six months. Between six months and a year, growth slows to around a half inch every month. A baby boy's average length at six months is around 26.5 inches (67.6 cm), whereas a baby girl's average length is approximately 25.75 inches (65.7 cm). Boys average 29.75 inches (75.7 cm) while girls average 29 inches at one year (74 cm). During the first six months, he grew quickly, gaining 1.49 pounds each month and one inch in length. The following are characteristics of the first 6 months.
a.) Upper limbs and head grow more quickly b.) Primitive reflexes are present, including a strong suck and gag reflex c.) Infant is an obligate nose breather d.) Posterior fontanel closes by 2-3 months
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problem 1 only
PROBLEM 1: A car travels a 10-degree inclined road at a speed of 20 ft/s. The driver then applies the break and tires skid marks were made on the pavement at a distance "s". If the coefficient of kinetic friction between the wheels of the 3500-pound car and the road is 0.5, determine the skid mark distance. PROBLEM 2: On an outdoor skate board park, a 40-kg skateboarder slides down the smooth curve skating ramp. If he starts from rest at A, determine his speed when he reaches B and the normal reaction the ramp exerts the skateboarder at this position. Radius of Curvature of the
Answers
The skid mark distance is approximately 14.8 feet.
To determine the skid mark distance, we need to calculate the deceleration of the car. We can use the following equation:
a = μ * g
where:
a is the deceleration,
μ is the coefficient of kinetic friction, and
g is the acceleration due to gravity (32.2 ft/s²).
Given that μ = 0.5, we can calculate the deceleration:
a = 0.5 * 32.2 ft/s²
a = 16.1 ft/s²
Next, we need to determine the time it takes for the car to come to a stop. We can use the equation:
v = u + at
where:
v is the final velocity (0 ft/s since the car stops),
u is the initial velocity (20 ft/s),
a is the deceleration (-16.1 ft/s²), and
t is the time.
0 = 20 ft/s + (-16.1 ft/s²) * t
Solving for t:
16.1 ft/s² * t = 20 ft/s
t = 20 ft/s / 16.1 ft/s²
t ≈ 1.24 s
Now, we can calculate the skid mark distance using the equation:
s = ut + 0.5at²
s = 20 ft/s * 1.24 s + 0.5 * (-16.1 ft/s²) * (1.24 s)²
s ≈ 24.8 ft + (-10.0 ft)
Therefore, the skid mark distance is approximately 14.8 feet.
(PROBLEM 1: A car travels a 10-degree inclined road at a speed of 20 ft/s. The driver then applies the break and tires skid marks were made on the pavement at a distance "s". If the coefficient of kinetic friction between the wheels of the 3500-pound car and the road is 0.5, determine the skid mark distance. PROBLEM 2: On an outdoor skate board park, a 40-kg skateboarder slides down the smooth curve skating ramp. If he starts from rest at A, determine his speed when he reaches B and the normal reaction the ramp exerts the skateboarder at this position. Radius of Curvature of the)
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a car takes 125 ft to brake from 60 to 0 mph. Assume that the acceleration of the Prius is constant while braking. Find how long it takes for the Prius to come to a stop. Long problems begin on the next page
Answers
Answer:
2.84 seconds
Explanation:
t = ?
distance = 125
Velocity origianal = 60 m/hr = 88 ft/s
AVERAGE velocity = 88/2 = 44 ft/s
44 t = 125
t = 125/44 = 2.84 s
help fast plssssssssssss
Answers
Answer:
star
Explanation:
because that is what our sun is.
How much is the plane's acceleration while breaking if it takes 15 s for its velocity
is changing from 145 m/s to 75m/s?
A. 4.67 m/s
B. 3.4 m/s
C. 45 m/s
D. 23 m/s
Answers
Answer:
A. 4.67 m/s²
Explanation:
u = 145 m/s
v = 75 m/s
t = 15 s
a = v - u / t
= 145 - 75 / 15
= 4.67 m/s²
Hope this helped...
Define Fundamental unit and Derived Unit
Answers
Derived can be broken down to simpler, fundamental units
Diana hangs a lead cylinder with a force of 12 N from a model bridge.
Which vector(s) accurately illustrates the reaction force of the bridge on the lead cylinder?
Answers
The action and reaction law allows us to find that the reaction force, the weight of the cylinder, is:
12 N force directed upward
Newton's third law or action and reaction law, establishes that if two bodies interact with each other the force that one applies to the other, is equal in magnitude to the force of the second on the first but in the opposite direction, that is, all forces act in pairs one in each body that interact.
Forces with these characteristics are called action and reaction.
In this case we have a hanging cylinder, with the cylinder it has mass so the weight is 12 N it acts on the table in a downward direction, let's say this is the action force.
In response to this force, the table exerts a force on the cylinder of equal magnitude but in the opposite direction, which is why it is directed upwards.
let's analyze the force diagram
When analyzing the forces shown in the diagram, the forces of equal magnitude to the weight are the first twoThe weight is directed downward, the answer must be directed upward.
In conclusion using theaction and reaction law we find that the answer for reaction force is:
12 N force directed upward
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Viking I, the first spacecraft to land on Mars, travelled 7. 00 x 108 km in 303 days. Calculate its average speed, in kilometres per second
Answers
The average speed is 26.7 Km/s
What is average speed?Average speed is the total distance traveled by an object divided by the time taken to travel that distance. It is a measure of how fast an object travels over a given distance, on average.
The formula for average speed is:
Average speed = total distance traveled / time taken
We know that;
Speed = Distance/Time
We have to note that;
Distance = 7. 00 x 10^8 km
Time = 303 * 24 * 60 * 60
= 7. 00 x 10^8 km/303 * 24 * 60 * 60
= 26.7 Km/s
The speed that we find is 26.7 Km/s
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20V Calculate: Total resistance from the given diagram. Fig:(a) 4W 12v 6W Fig:(b) 6W 6W 12v
Answers
Answer:
please help
Explanation:
If the distance between slits on a diffraction grating is 0. 50 mm and one of the angles of diffraction is 0. 25°, how large is the path difference? nm How many orders of bright lines does this equal for red light with a wavelength of 650 nm? wavelengths.
Answers
The distance the wave traveled between the two-point is the path difference. The path difference will be 2200 nm and 3 orders of bright lines do this equal red light with a wavelength of 650 nm.
What is diffraction grating?A diffraction grating is a type of optical instrument obtained with a continuous pattern. The pattern of the diffracted light by a grating depends on the structure and number of elements present.
The equation of diffraction grating is given as
\(\rm n\lambda=dsin\phi\\\\\rm n\lambda=0.50\times10^{-3}\times sin(0.25) \\\\ n\rm \lambda=2.18\times10^{-6} \;m \\\\\rm n\lambda=2200\;nm\)
Hence the path difference will be 2200 nm.
\(\rm n\lambda=2200\;nm \\\\\rm n\times650=2200 \\\\\rm n=3.38\)
n= 3
Hence 3 orders of bright lines do this equal red light with a wavelength of 650 nm.
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An order d=23 b tree with fill factor 31an contain nodes with up to how many pointers?
Answers
An order d=23 B-tree with a fill factor of 31 can contain nodes with up to 31 pointers.
A B-tree is a balanced tree data structure commonly used in databases and file systems. It is designed to efficiently store and retrieve large amounts of data. The "order" of a B-tree refers to the maximum number of child pointers a node can have. In this case, the order is d=23.
The fill factor determines the minimum percentage of keys a node must have to be considered "full." In this case, the fill factor is 31, indicating that a node must have at least 31 keys to be considered full.
To calculate the maximum number of pointers a node can have, we can subtract 1 from the fill factor since one pointer is needed for each key. Therefore, in an order 23 B-tree with a fill factor of 31, each node can have up to 31 - 1 = 30 pointers.
This means that a fully packed node in this B-tree can have up to 30 child pointers, corresponding to 30 keys stored within the node.
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Research by Goodale and colleagues indicates that the primary function of the dorsal stream of the visual cortex is to.
Answers
Research conducted by Goodale and colleagues suggests that the primary function of the dorsal stream of the visual cortex is to process visual information for guiding actions and motor control, rather than conscious perception.
Goodale and his colleagues have proposed a theory known as the two-stream hypothesis, which suggests that the visual processing in the brain is divided into two distinct streams: the ventral stream and the dorsal stream.
On the other hand, the dorsal stream, referred to as the "where" or "how" pathway, is primarily involved in processing visual information for the purpose of guiding actions and motor control. This stream is responsible for extracting spatial information, motion perception, and the perception of depth and location of objects in the visual field.
Goodale and his colleagues have provided substantial evidence for this hypothesis through various studies, including patient studies with individuals who have damage to the dorsal stream. These patients often experience impairments in their ability to interact with objects in their visual field, even though their conscious perception of those objects remains intact.
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What is a wiggle in time called?
Answers
Find the average velocity (in m/s) of a bicycler that starts 200 meters north of Norwalk and is 2,000 meters north after 45 minutes.
Answers
Answer:
The answer is 10
Explanation:20 x 10 = 200
If a rock is thrown upward on the planet Mars with a velocity of 10 m/s, its height in meters t seconds later is given by y=10t−1.86t2. (a) Find the average velocity over the given time intervals: (i) [1,2] (ii) [1,1.5] (iii) [1,1.1] (iv) [1,1.01] (v) [1,1.001] (b) Estimate the instantaneous velocity when t=1.
Answers
To find the average velocity over the given time intervals, we can use the formula:
Average velocity = (change in position) / (change in time)
(a)
(i) [1,2]:
Change in position = y(2) - y(1) = 10(2) - 1.86(2^2) - (10(1) - 1.86(1^2)) = 20 - 7.44 - 10 + 1.86 = 4.42Change in time = 2 - 1 = 1Average velocity = (4.42) / (1) = 4.42 m/s(ii) [1,1.5]:
Change in position = y(1.5) - y(1) = 10(1.5) - 1.86(1.5^2) - (10(1) - 1.86(1^2)) = 15 - 4.185 - 10 + 1.86 = 2.675Change in time = 1.5 - 1 = 0.5Average velocity = (2.675) / (0.5) = 5.35 m/s(iii) [1,1.1]:
Change in position = y(1.1) - y(1) = 10(1.1) - 1.86(1.1^2) - (10(1) - 1.86(1^2)) = 11 - 2.046 - 10 + 1.86 = 0.814Change in time = 1.1 - 1 = 0.1Average velocity = (0.814) / (0.1) = 8.14 m/s(iv) [1,1.01]:
Change in position = y(1.01) - y(1) = 10(1.01) - 1.86(1.01^2) - (10(1) - 1.86(1^2)) = 10.1 - 1.8686 - 10 + 1.86 = -0.0086Change in time = 1.01 - 1 = 0.01Average velocity = (-0.0086) / (0.01) = -0.86 m/s(v) [1,1.001]:
Change in position = y(1.001) - y(1) = 10(1.001) - 1.86(1.001^2) - (10(1) - 1.86(1^2)) = 10.01 - 1.86006 - 10 + 1.86 = -0.00006Change in time = 1.001 - 1 = 0.001Average velocity = (-0.00006) / (0.001) = -0.06 m/s(b) To estimate the instantaneous velocity when t=1, we can find the derivative of the position function with respect to time and evaluate it at t=1.
y(t) = 10t - 1.86t^2y'(t) = 10 - 3.72tInstantaneous velocity at t=1: y'(1) = 10 - 3.72(1) = 6.28 m/s
About VelocityVelocity is a vector quantity that indicates how fast an object is moving. The magnitude of this vector is called speed and is expressed in meters per second.
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what is the weight on mass
Answers
Answer:
6.39×10^23 kg is the weight on mass
If you hear that the net forces on an object is zero, what is the only conclusion you can make without seeing the object?
Answers
Answer:
That the object is either at rest or moving with constant velocity.
Explanation:
Newton’s 1st Law of Motion tells us how an object behaves if the net force acting upon an object is equal to zero. An object at rest wants to stay at rest (or, an object in motion wants to stay in uniform motion) unless acted upon by an unbalanced force. Knowing this knowledge of Newton’s first law, if some one were to tell us that the net forces acting upon an object added to zero, we can conclude that, without seeing the object, that the object is either at rest or moving with constant velocity.
Each of the planets also spins about an axis running through it, and in most cases the direction of spin rotation is Group of answer choices clockwise, when viewed from Polaris, the North Star. reversible: clockwise near perihelion and counterclockwise out by aphelion. unknown. the same as the direction of revolution about the Sun.
Answers
Each of the planets that spin about an axis running through it and in the direction of spin rotation is the same as the direction of revolution about the Sun.
What is Earth's Rotation?Earth's Rotation refers to the period of time that Earth takes to give a complete turn around its own axis.
Earth's Revolution is the period of time that takes for the Earth to turn around the Sun (365 days and 6 hours).
In conclusion, each of the planets that spin about an axis running through it and in the direction of spin rotation is the same as the direction of revolution about the Sun.
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how much does a change in mass affect the kinetic energy of two balls of comparable diameter?
Answers
Answer:
Mass and kinetic energy have a positive relationship, which means that as mass increases, kinetic energy increases, if all other factors are held constant.
In this state, Kinetic energy is equal to half of the product mass and velocity. SI unit is joules. So it's if the mass is doubled then the kinetic energy also gets doubled.
A car at a position 150 km [W] of Toronto travels to a position 400 km [W] of
Toronto. The total displacement of the car is:
Answers
Answer:
The total displacement of the car is 250 km.
Explanation:
Given that,
A car at a position 150 km [W] of Toronto travels to a position 400 km [W] of Toronto.
Total displacement = final position - initial position
= 400 km - 150 km
= 250 km
So, the total displacement of the car is 250 km.
The maximum charge on an anion is Write the negative sign for anion.
Answers
The maximum charge on an anion is indicated by a negative sign, thats why anion are called negetively charger particles
An anion is a negatively charged ion that forms when an atom gains one or more electrons. The charge of an anion is always negative because it has more electrons than protons. The negative sign is used to denote the excess of electrons and to indicate the overall negative charge of the anion. The magnitude of the negative charge depends on the number of electrons gained by the atom. For example, if an atom gains one electron, the anion has a charge of -1; if it gains two electrons, the anion has a charge of -2, and so on. The negative sign is crucial in representing the charge of an anion and distinguishing it from a cation, which carries a positive charge.
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4. A foam cooler of negligible mass contains 1.75 kg of water Ice from a refrigerator at -15°C, is then added to the water in the cooler. When thermal equilibrium has been reached, the total mass of ice in the cooler is
0.778 kg. Assuming no heat exchange with the surroundings, what mass of ice was added? For water, Le-334 x 10 J/kg, and for ice, c-2100 J/(kg-K).
1.8 kg
O 1.1 kg
O 07
O
0.7 kg
0.9 kg
Answers
The mass of ice that was added is 1.11 kg. So the answer is 1.1 kg (option O 1.1 kg).
To solve this problem, we can use the principle of energy conservation. The heat gained by the ice will be equal to the heat lost by the water.
The heat gained by the ice can be calculated using the formula:
Q_ice = m_ice * c_ice * ΔT_ice
Where:
Q_ice = heat gained by the ice
m_ice = mass of ice added
c_ice = specific heat capacity of ice (2100 J/(kg-K))
ΔT_ice = change in temperature of the ice (from -15°C to 0°C)
The heat lost by the water can be calculated using the formula:
Q_water = m_water * L_water
Where:
Q_water = heat lost by the water
m_water = mass of water in the cooler
L_water = latent heat of fusion of water (334 x 10^3 J/kg)
Since there is no heat exchange with the surroundings, the heat gained by the ice is equal to the heat lost by the water:
Q_ice = Q_water
m_ice * c_ice * ΔT_ice = m_water * L_water
Substituting the known values:
m_ice * 2100 * (0 - (-15)) = 1.75 * 334 * 10^3
Simplifying the equation:
m_ice * 2100 * 15 = 1.75 * 334 * 10^3
m_ice = (1.75 * 334 * 10^3) / (2100 * 15)
m_ice ≈ 1.11 kg
Therefore, the mass of ice that was added is approximately 1.11 kg. So the answer is 1.1 kg (option O 1.1 kg).
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help, please
1.) What is the momentum of a 2,000 kg car moving at 24 m/s?
a.) 48,000 kg m/s
b.) 83.3 kg m/s
c.) 0.0012
--------------------
2.) What is the momentum of a 4.5 kg bowling ball moving at 7 m/s?
a.) 31.5 kg m/s
b.) 0.64 kg m/s
c.) 1.56 kg m/s
Answers
Answer:
A and A
Explanation:
see paper for work! :)
URGENT HELP PLS
1. Given a force-displacement curve as shown in the figure, what does the area of the region enclosed by the curve represent?
A. The force acting on the object
B. The displacement of the object
C. The magnitude of the coefficient of static friction
D. The work done on the object by the force
Answers
Explanation:
work done is equals to force into displacement in the direction of force
Ans: D