Driving in your car with a constant speed v
v
, you encounter a bump in the road that has a circular cross section, as indicated in the figure(Figure 1). The radius of curvature of the bump is 35 m.
At what speed must you go over the bump if people in your car are to feel "weightless"?
The speed you must go over the bump if people in your car are to feel "weightless" is 18.52 m/s.
What is weightlessness?Weightlessness is the complete or near-complete absence of the sensation of weight. In this situation, the downward acceleration is equal to acceleration due to gravity.
a = g
v²/r = g
v² = rg
v = √rg
where;
v is the maximum speed you must applyr is the radius of the curveg is acceleration due to gravityv = √(35 x 9.8)
v = 18.52 m/s
Thus, the speed you must go over the bump if people in your car are to feel "weightless" is 18.52 m/s.
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What’s the weight of an object on Earth with a mass of 230 kg?
The weight of an object on Earth with a mass of 230 kg is 2256.3 newtons (n).
What is weight?The weight of an object is the force acting on the object due to the acceleration of gravity. It is defined as the vertical force experienced by a mass as a result of gravitation.
Weight is obtained from the product of mass and acceleration due to gravity (g). The object gets accelerated due to gravity when the object is in free fall. The value of g is 9.8 m/s².
From the given,
mass of an object = 230 kg
weight of an objcet=?
weight (w) = m×a, where m is the mass of the object and the unit of mass is the kilogram, a is the acceleration due to gravity and its unit is m/s², and w is the weight of the object and the unit of weight is Newton.
w = m×a
= 230×9.81
= 2256.3 N
w = 2256.3 N
Thus the weight of an object is 2256.3 N.
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A 3rd harmonic is being produced in a tube that is open at both ends. The tube is 3 meters long and
the speed of sound is 340 m/s. What frequency will an observer hear?
The frequency of the second harmonic is 880 Hz (a pitch of A5). The speed of sound through the pipe is 350 m/sec. Find the frequency of the first harmonic and the length of the pipe. The length of an air column is related mathematically to the wavelength of the wave which resonates within it.
After rubbing a balloon on your shirt, your hair sticks up when the balloon is near your head. Explain how tiny particles on you and the balloon can make your hair stand up. (1 point) Protons are transferred from your body to the balloon. This gives you a negative charge and the balloon a positive charge. The opposite charges attract. Electrons are transferred from your body to the balloon. This gives you and the balloon a negative charge. The like charges attract. Electrons are transferred from your body to the balloon. This gives you a positive charge and the balloon a negative charge. The opposite charges attract. Electrons are transferred from your body to the balloon. This gives you a negative charge and the balloon a positive charge. The opposite charges attract.
You want to build a generator to light a bulb. You have a fairly large permanent magnet, some wire, and a lightbulb. You may build it as follows. Wind the wire for about 200 turns into a coil of 15 cm radius. Tape up the coil and place it in the region between the poles of the magnet that produces a 0.10 T magnetic field. Connect a hand crank to the coil and rotate it at a rotational speed ω.
What is the required rotational speed ω to generate a peak voltage of 6 V?
The required rotational speed ω to generate a peak voltage of 6 V is 4.24 rad/s
The induced peak voltageThe induced peak voltage in the generator is given by ε = NABω where
N = number of turns of coil = 200, A = area of coil = πr² where r = radius of coil = 15 cm = 0.15 m, B = magnetic field strength = 0.10 T and ω = rotational speed of coilRotational speed
Making ω subject of the formula, we have
ω = ε/NAB
ω = ε/Nπr²B
Substituting the values of the variables into the equation, we have, given that ε = 6 V
ω = ε/Nπr²B
ω = 6 V/(200 turns × π(0.15 m)² × 0.10 T)
ω = 6 V/(200 turns × 0.0225π m² × 0.10 T)
ω = 6 V/(200 turns × 0.0225π m² × 0.10 T)
ω = 6 V/0.45π turns-m²T
ω = 6 V/1.4137 turns-m²T
ω = 4.244 rad/s
ω ≅ 4.24 rad/s
The required rotational speed ω to generate a peak voltage of 6 V is 4.24 rad/s
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What are the first three harmonics of a note produced on a 0.31 m long violin string if the waves on this string have a speed of 274.4 M/s. what is the length of the pipe
which of these will NOT help reduce c02 levels in the atmosphere?
Answer:
the answer would be "using more heat" btw
Explanation:
In astronomy, distances are often expressed in lightyears. One lightyear is the distance that light travels in one Earth year. The distance to Alpha Centauri, the next closest star, is 4.3 lightyears away. How far is this in meters?
Answer is ...
Happy to help ..
define Brownian motion
Answer:
Brownian motion, or pedesis, is the random motion of particles suspended in a medium.
Explanation:
of motion typically consists of random fluctuations in a particle's position inside a fluid sub-domain,
Answer:
The erratic random movement of microscopic particles in a fluid, as a result of continuous bombardment from molecules of the surrounding medium is called Brownian motion. Hope it helps you.
A very long line of charge with charge per unit length +8.00 μC/m is on the x-axis and its midpoint is at x = 0. A second very long line of charge with charge per unit length -4.00 μC/m is parallel to the x-axis at y = 14.0 cm and its midpoint is also at x = 0.
At what point on the y -axis is the resultant electric field of the two lines of charge equal to zero?
The point on the y -axis in which the resultant electric field of the two lines of charge equal to zero is 5.5 cm.
Electric field due to each line
The electric field due to each line is calculated as follows;
[tex]E = \frac{kq}{r^2}[/tex]
where;
q is charge r is the distancek is Coulomb's constantIn the question, we were given charge per unit length instead of charge.
Since the midpoint of two lines are same, can assume that they are equal.
Hence, the total charge in each line will be;
q1 = q1Lq2 = q2LAt a zero resultant electric field;
[tex]E_1 = E_2\\\\E_1 + E_2 = 0\\\\\frac{kq_1}{r_1^2} = \frac{kq_2}{r_2^2}[/tex]
Let the position on y p axis = n
[tex]\frac{K (8 \ \mu C/L)\times L}{(n - 0)^2} + \frac{K(-4\ \mu C/L) \times L}{(0.14 - n)^2} = 0\\\\\frac{K(8\mu C)}{(n)^2} - \frac{K(4\mu C)}{(0.14- n)^2} = 0\\\\\frac{K(8\mu C)}{(n)^2} = \frac{K(4\mu C)}{(0.14- n)^2} \\\\\frac{8}{n^2} = \frac{4}{(0.14 - n)^2} \\\\4n^2 = 8(0.14 - n)^2\\\\4n^2 = 8(0.02 -0.28n - n^2) \\\\4n^2 = 0.16 - 2.24 n - 8n^2\\\\ 12n^2+ 2.24n - 0.16 = 0\\\\a = 12, \ b = 2.24, \ c = -0.16\\\\n = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a} \\\\[/tex]
[tex]n = \frac{-2.24\pm \sqrt{(2.24)^2 - 4(12)(-0.16)} }{2(12)} \\\\n = 0.055 \ m\\\\n = 5.5 \ cm[/tex]
Thus, the point on the y -axis in which the resultant electric field of the two lines of charge equal to zero is 5.5 cm.
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How do we turn uranium into electrical energy we can use (describe the power plant)?
Answer:
Nuclear Power Plant
Explanation:
Heat produced during nuclear fission to heat water. In nuclear fission, atoms are split apart to form smaller atoms, releasing energy. Fission takes place inside the reactor of a nuclear power plant. At the center of the reactor is the core, which contains uranium fuel.
draw a Lewis dot structure for Hf
Answer:
There!!
Explanation:
mark me brainliest!!
The axial tilt of the Earth causes:
A. The division of Earth into different time zones.
B. Different seasons in the hemispheres during the same time of year.
C. The Earth to rotate at 15 degrees per hour.
D. Prevailing winds to move northerly in a clockwise direction.
Answer:
B. Different seasons in the hemispheres during the same time of year.
Explanation:
The seasons are caused by the tilted axis of the Earth.
what is the force in kN of work done is 1.2 ms moves through 120m
Answer:
work done = force x distance
1.2 = f x 120
1.2 = 120f
f = 0.01N
hope its helps!
Which two aspects of sound go together?
A. amplitude and pitch
B. pitch and frequency
C. decibels and pitch
D. pitch and volume
Which two aspects of sound go together?
Pitch and frequencyPitch and frequency are two aspects of sound that go together. Pitch means Higness or Lowness of sound. Frequency is the measurement of the number of times that a repeated event occurs per unit of time...~
Answer:
B
Explanation:
B, because pitch and sound produce high- and low-pressure disturbances of the particles of the air at a given frequency, the ear has an ability to detect such frequencies and associate them with the pitch of the sound.
The graph represents the force applied on an 3.00kg crate while it moved 5.0m. A. How much total work is done on the crate? B. If the ball was moving at 6.00m/s when the force was first applied, what is its final velocity?
a. We can calculate the amount of work by calculating the area under the graph.
first area (rectangular): 2.5 x 6 = 15
second area(trapezoid): 1/2 x (6+10) x 2.5 =20
total work done: 35 J
b. the force was first applied = 6 N
F = m.a
a = 6 : 3 = 2 m/s²
vf²=vi²+2as
vf²=6²+2.2.5
vf²=56
vf=7.5 m/s
How do plants recycle carbon during photosynthesis?
A.) The carbon in glucose is recycled as carbon gas.
B.) The carbon in glucose is recycled as carbon dioxide.
C.) The carbon in carbon gas is recycled as glucose.
D.) The carbon in carbon dioxide is recycled as glucose.
I Need this answer in 5 MINUTES!
Answer:
= D.) The carbon in carbon dioxide is recycled as glucose.The plants recycle carbon during the process of photosynthesis by the carbon in the carbon dioxide is recycled as glucose. Hence, option D is correct.
What is Photosynthesis?Photosynthesis is the conversion of light energy to electrical energy in green plants and several other organisms. Green plants employ light energy during photosynthesis to convert water, carbon dioxide, and mineral into oxygen- and energy-rich organic molecules.
Photosynthesis is essential to the preservation of life on Earth, and its significance cannot be overstated. The amount of food and other organic materials on Earth would quickly decline if photosynthesis stopped. The majority of life forms would vanish, and eventually the atmosphere of Earth would be that few of gaseous oxygen.
The only organisms that might survive in such an environment would be chemosynthetic bacteria, which can use the hydrogen gas of specific inorganic materials and are not reliant on the conversion of light energy.
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The diagrams show four bodies moving in the directions shown. The only forces acting on the bodies are shown in each diagram.
Which body gains the most kinetic energy when moving a distance of 1.0m ?
Answer:
C - the greatest net force is on c with 25N - 10N = 15N
a = F / M
a = (v2 - v1) / t so C has the greatest acceleration and will reach the greatest velocity
KE = 1/2 M v^2
The diagrams show four bodies moving in the directions shown. The only forces acting on the bodies are shown in each diagram. The option C body gains the most kinetic energy when moving a distance of 1.0m.
What is kinetic energy?When some amount of force is applied on a object it can store a energy in that object. That is the kinetic energy. Mathematically the mass of the object and its change in acceleration in that object makes the kinetic energy. It is a vector quantity.
How can we calculate the kinetic energy?
To calculate the kinetic energy we are using the formula,
U= (1/2)mv²
U = (1/2) ma²t²
Or, U= (1/2)ma × at²
Or, U= F × (1/2)at²
From this calculation we can see that if there is more force applied on a body that generates more kinetic energy on that object.
According to the question ,
Force of the object of Option A has (F) = f₂ - f₁
= (20 - 10)
= 10N
Force of the object of Option B has (F) = 10N
Force of the object of Option C has (F) = f₂ - f₁
=(25-10)= 15N
Force of the object of Option D has (F) = f₂ - f₁
= (30-30)
= 0N
According to the question, option C has the most amount of force and we know the more force generate the more kinetic energy. So it has the more kinetic energy.
We can easily say that, The option C body gains the most kinetic energy when moving a distance of 1.0m
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Behavioral responses in organisms require communication between
Following extinction , when the conditioned response (cr) gains strength again , we say it has been
A. Generalized
B. Discriminated
C. Spontaneously recovered
D. Initially inhibited
Answer:
C. Spontaneously covered
Explanation:
an object is being pulled along the ground by a force of 75N directed 28° above horizontal how much work does the force do in pulling the object to 8.5 m
Answer:
(75)(8.5)cos(28)=562.879J
Explanation:
W=Fdcos(theta)
If a 6.0 kg bowling ball is rolled with a velocity of 3.5 m/s, what is the momentum of the ball?
Answer:
Answer: simple h. momenta=6.0*3.5. =21.0.
Explanation:
Calculate the fuel efficiency of a vehicle that can travel 350 km using 20 L of gasoline. Include units in your answer.
I got 17.5kmpl and the system said it was wrong. Please help!!
The fuel efficiency of the vehicle is 5.71%.
Fuel efficiency of the vehicleThe fuel efficiency of the vehicle is determined from the ratio of volume of fuel used to the total distance traveled.
Distance traveled by the vehicle = 350 km
Volume of fuel used = 20 L
Fuel efficiency of the vehiclee = (20 / 350) x 100
e = 5.71%
Thus, the fuel efficiency of the vehicle is 5.71%.
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Answer: 17.5
Explanation:
1. i did the same problem and got it right
2. you don't do "kmpl" but rather you have to do "km/l" which represents the kilometers over the liters
Which statement best describes what happens when people declare bankruptcy?
1. Some of their debts can be eliminated, and loan terms are renegotiated with lenders.
2. All of their debts are eliminated, and they are given a fresh start.
3. All of their debts are eliminated, but they have to sell their assets, such as their homes.
4. Some of their debts can be eliminated, but they must agree not to take on more debt.
1. Some of their debts can be eliminated, and loan terms are renegotiated with lenders.
2. All of their debts are eliminated, and they are given a fresh start.
3. All of their debts are eliminated, but they have to sell their assets, such as their homes.
D took the test UWU
The statement is all of their debts are eliminated, but they have to sell their assets, such as their homes. Option (c) is correct.
What is bankruptcy?During the legal process of bankruptcy, individuals or other entities that are unable to pay their creditors back can seek partial or complete relief from their debts. Bankruptcy is typically imposed by a court order that is frequently requested by the debtor.
An opportunity to start all over is provided through bankruptcy by wiping off uncontrollable debts. In the meanwhile, creditors may be able to receive some payment based on the person or company's liquidate assets.
Declaring bankruptcy should help the economy as a whole by giving individuals and business organizations another chance to recover financially. It may also assist persons in recovering some loan repayment.
Therefore, Option (c) is correct.
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The carbon atom has an atomic number of 6 and its atomic mass number is 12.
How many neutrons does the carbon atom have?
Answer:
If it has 12 nucleons and 6 of them are protons the other six must be neutrons (6).
Which describes a feature of the physical changes of all substances?
Answer:
A change in size, shape, or matter.
Explanation:
A physical change does not produce new substances. A physical change may only change the physical properties of a substance. a change in size, shape, or phase of matter.
Answer: It does not change the identity of a substance
Explanation:
a girl of whose mass is 50kg carries a box of mass 20kg high.she take 16s to climb up the steps (take g=10m/s^2). what is her weight?
Explanation:
[tex]w = m.g[/tex]
[tex]m =70 \\ g = 10[/tex]
70x10=700N
what does odometer of a vehicle measure ?
Answer:
The odometer registers the distance traveled by the vehicle; it consists of a train of gears (with a gear ratio of 1,000:1) that causes a drum, graduated in 10ths of a mile or kilometre, to make one turn per mile or kilometre.
Explanation:
hope it helps
Which of this following value on the absolute scale of temperature is to the point
Answer:
D
Explanation:
because the correct answer is D
A ballon is rubbed against a sweater. Which of the following describes the result of this interaction?
Answer:
static could form and The balloon becomes positively charged
Explanation:
Science