A ball rolls in a horizontal direction off of a ledge. If the velocity of the ball was 11 m/s
and the ball traveled 46 m from the base of the ledge, how tall is the ledge? Explain please
Answers
the height of the ledge is 85.5 m.
The height of a ledge from which a ball rolls in a horizontal direction, given that the velocity of the ball was 11 m/s and it traveled 46 m from the base of the ledge can be calculated using the formula;
`H = 1/2g*t^2`where, H = height of the ledge
g = acceleration due to gravity
t = time taken by the ball to reach the ground
From the formula for distance,
`d = vt`
We know that time taken by the ball to reach the ground is given by;
t = d/v= 46/11t = 4.18s
Now substituting the value of t into the formula for height,
H = 1/2 * 9.8 * 4.18^2= 85.5 m
Therefore, the height of the ledge is 85.5 m.
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Related Questions
Which city is known as the richest square mile on earth?.
Answers
Answer:
Central City is the county seat and the most populous municipality of Gilpin County. The city is a historic mining settlement founded in 1859 during the Pike's Peak Gold Rush and came to be known as the "Richest Square Mile on Earth".
2. A brick is sitting on a building 22 m high. It has a mass of 7.9 kg. What amount of potential
energy does it have?
F:
R:
G:
S:
Answers
Answer:
1703.24J
Explanation:
Given parameters:
Mass of brick = 7.9kg
Height of building = 22m
Unknown:
Potential energy of the brick = ?
Solution:
The potential energy of a body is the energy at rest of the body. Mathematically;
P.E = mgh
m is the mass of the brick
g is the acceleration due to gravity
h is the height of the building
Insert the given parameters and solve;
P.E = 7.9 x 9.8 x 22 = 1703.24J
A jogger runs 5.0 km on a straight trail at an angle of 60° south of west. What is the southern component of the run rounded to the nearest tenth of a kilometer?
A) -4.3 km
B) -2.5 km
C) 2.5 km
D) 4.3 km
Answers
Answer:
4.3 km
Explanation:
saturated fatty acids: question 9 options: 1) have single bonds between the carbon molecules 2) are solid at room temperature 3) are derived from animal sources 4) all of the above
Answers
All of the above options are correct. Have single bonds between the carbon molecules. This means that each carbon atom in the fatty acid chain is bonded to the maximum number of hydrogen atoms, resulting in a saturated carbon chain without any double or triple bonds.
Are solid at room temperature. Saturated fatty acids tend to have higher melting points compared to unsaturated fatty acids. At room temperature, many saturated fatty acids exist in a solid state, such as butter or coconut oil. Can be derived from animal sources. Saturated fatty acids are commonly found in animal fats and dairy products. Foods like beef, pork, lamb, poultry, and whole milk are examples of sources that contain saturated fats.
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What is the temperature of an incandescent lamp filament
Answers
Answer:
about 5000 °F
Explanation:
A calculator of mass 0.11 kg is lowered from a bookshelf that is 1.6m above the floor to a desk that is 0.85m above the floor. What's the change in GPE?
Answers
Answer:
I think it would be 0.1496 but I'm not really sure sorry
A boulder with a mass of 2,500 kg resting on a ledge 200 m above the ground falls. If the boulder’s ME is conserved, what is the speed of the boulder just before it hits the ground?
Answers
Answer:
nitial GPE = final KE 2500*10*200 = ½ 2500*v^2 v^2 = 2*10*200 v= 63.24 m/sec
Explanation:
A new way of "multiplying" two vectors is introduced in this chapter. What is it called? Select one: O a. The tensor product. O b. The angular product. Oc. The scalar product. O d. The dot product. O e. The cross product.
Answers
The correct option is option e) cross product
The cross-product is a new way of "multiplying" two vectors. It results in a new vector that is perpendicular to both the original vectors and its magnitude is given by the area of the parallelogram formed by the two original vectors.
In three-dimensional space, cross-product is a binary operation on two vectors. It yields a vector perpendicular to both vectors. a b represents the vector product of two vectors, a and b. Its resulting vector is parallel to a and b. Cross goods are another name for vector products.
The cross-product has four basic applications:
calculating the angle () between two vectorsdetermining a vector normal to a planecalculating the moment of a force about a pointcalculating the moment of a force about a line.Read more about Cross-Product from:
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examples of contact force
Answers
Answer:
Reaction force. An object at rest on a surface experiences reaction force.
Tension. An object that is being stretched experiences a tension force.
Friction. Two objects sliding past each other experience friction forces.
Air resistance.
Explanation:
Answer with Explanation:
Conntact forces: Frictional force, Muscular force etc
Non-contact : gravitational, electrostatic, and magnetic
I hope im right!!
Please help will give brainliest
Answers
Answer:
1. The human exerts a force when he pulls the bow back and launches it.
2. Gravity causes the arrow to fall down, and air resistance slows the arrow down, as it is in the opposite direction.
3. If the arrow has more mass, it would require to have a greater force exerted on it to make it fly farther. So the archer would most likely not reach as high of a top speed.
Explanation:
brainliest :)
I don’t understand why the answer is the first choice, please explain!
Answers
(a) Take into account that the centrifugal force experienced by each car is given by:
\(\begin{gathered} F_1=m\frac{v^2_1}{R_1} \\ F_2=m\frac{v^2_2}{R_2} \end{gathered}\)where v1 and v2 are the speed of both cars and R1 and R2 are the radius of the curve traveled by each car, m is the mass of the cars.
If you solve for m, you obtain:
\(\begin{gathered} m=\frac{F_1R_1}{v^2_1} \\ m=\frac{F_2R_2}{v^2_2} \end{gathered}\)due to the masses of the cars are identical, you have:
\(\frac{F_1R_1}{v^2_1}=\frac{F_2R_2}{v^2_2}\)(b) Now, consider that:
R1 = 2R
v1 = v
R2 = 6R
v2 = 3v
Now, divide the equation for F1 over the equation for F2, replace the previous expressions for the parameters and simplify for F1:
\(\begin{gathered} \frac{F_1_{}}{F_2}=\frac{m\frac{v^2_1}{R_1}}{m\frac{v^2_2}{R_2}} \\ \frac{F_1_{}}{F_2}=\frac{v^2_1R_2}{v^2_2R_1}=\frac{v^2\cdot6R}{(3v)^2\cdot2R} \\ \frac{F_1}{F_2}=\frac{1}{3} \\ F_1=\frac{1}{3}F_2 \end{gathered}\)
A pharmaceutical company proposes a new drug treatment for alleviating symptoms of PMS (premenstrual syndrome). In the first stages of a clinical trial, it was successful for 7 out of 12 women. a. Con
a. Construct a 95% confidence interval for the population proportion.
b. Is it plausible that it is successful for only half thepopulation? Explain.
Answers
a. The 95% confidence interval for the population proportion is approximately 0.249 to 0.917.
b. It is also plausible that the success rate is higher than half the population.
a. To construct a 95% confidence interval for the population proportion, we can use the formula:
CI = p' ± Z * √((p'(1-p'))/n),
Where p' is the sample proportion (success rate), Z is the Z-score corresponding to the desired confidence level (95% in this case), and n is the sample size.
Given that the drug treatment was successful for 7 out of 12 women, the sample proportion is p' = 7/12 = 0.583.
To determine the Z-score for a 95% confidence level, we need to look up the critical value from the standard normal distribution. For a two-tailed test, the Z-score for a 95% confidence level is approximately 1.96.
Substituting the values into the formula, we have:
CI = 0.583 ± 1.96 * √((0.583(1-0.583))/12).
Calculating the expression within the square root:
√((0.583(1-0.583))/12) ≈ 0.170.
Substituting this value into the formula:
CI = 0.583 ± 1.96 * 0.170.
Calculating the lower and upper bounds of the confidence interval:
Lower bound = 0.583 - (1.96 * 0.170) ≈ 0.249,
Upper bound = 0.583 + (1.96 * 0.170) ≈ 0.917.
Therefore, the 95% confidence interval for the population proportion is approximately 0.249 to 0.917.
b. To determine if it is plausible that the drug treatment is successful for only half the population (p = 0.5), we can check if the value 0.5 falls within the 95% confidence interval. In this case, since the lower bound of the confidence interval (0.249) is less than 0.5, it is plausible that the success rate is lower than half the population. However, since the upper bound of the confidence interval (0.917) is greater than 0.5, it is also plausible that the success rate is higher than half the population. The 95% confidence interval indicates that the true population proportion could lie anywhere between 0.249 and 0.917, so we cannot definitively conclude that the success rate is exactly half the population.
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Help! I'm in a pinch and need help!!! WILL BRAINLIEST! I am SUper BaD at this SUbJect.
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What does the weight of an object depend on?
A. Time taken for an event to occur
B. Temperature of the object
C. Force of gravity
D. Atmospheric pressure
Answers
Answer:
The Answer is C. The force of gravity
Explanation:
This is because it is the force of gravity exerted or inflicted upon the object or organism. With more gravity inflicting upon an object the heavier it feels. In fact, weight and gravity have such a close relationship that the equation for weight is F = M x A where F represents the objects weight in Newtons, M equals it's mass, and A represents the downward acceleration due to the gravity.
Answer:
The answer is c
Explanation:
The steel beam has a cross-sectional area shown. Determine the largest intensity of the distributed load Wo that it can support so that maximum bending stress in the beam does not exceed 22 ksi.
Answers
The largest intensity of the distributed load Wo that the steel beam can support without exceeding a maximum bending stress of 22 ksi is 15.4 kips/ft.
To determine the maximum load that the beam can support, we need to use the bending stress formula, which states that the maximum bending stress is equal to My/I, where M is the bending moment, y is the distance from the neutral axis to the point where the maximum stress occurs, and I is the moment of inertia of the cross-section of the beam.
First, we need to calculate the moment of inertia of the given cross-section. We can use the formula for the moment of inertia of a rectangular section, I = (bh^3)/12, where b is the width and h is the height of the section. Substituting the given values, we get I = (2 in)(6 in)^3/12 = 108 in^4.
Next, we need to determine the maximum moment that the beam can resist without exceeding the maximum bending stress of 22 ksi. We can use the formula for the bending moment, M = (WoL^2)/8, where Wo is the intensity of the distributed load, and L is the span of the beam.
Substituting the given values, we get M = (Wo(20 ft)^2)/8 = 5Wo ft-kips. Setting the maximum bending stress equal to 22 ksi and substituting the values for M and I, we get 22 ksi = (5Wo ft-kips)*(3 in)/(108 in^4/12). Solving for Wo, we get Wo = 15.4 kips/ft.
Therefore, the largest intensity of the distributed load that the beam can support without exceeding the maximum bending stress is 15.4 kips/ft.
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When might a person use the recovery training principle?
Need this answer quickly pls
Answers
Answer:
The Recovery Principle applies both to immediate rest needed between bouts of exercise, as well as to longer time intervals of several hours to about two days. When you sprint as fast as possible or lift heavy weights, you will notice that your heart still pumps hard and you breathe heavy for a while after you stop.
Explanation:
Hope this helped!
Need Help on this image is below thanks.....
Answers
Answer:
Mass , this is the answer because mass allows objects of any size to be moved depending on the force of the impact , push or turn
an electric dipole with a dipole moment of magnitude p is placed at various orientations in an electric field E that is directed to the left.What orientation of the dipole will result in maximum torque directed into the page?
Answers
An electric field with intensity ′E′ is applied to an electrical dipole with dipole moment ′p′. The dipole moves into a place where its axis forms an angle with the electric field.
What is the electric field's direction at point p?Justification: Since electric fields are subject to the of superposition, the overall electromagnetic current of a system typically equal to the total of its individual electric fields. Each charge produces an electric field at pixel Value that is equal in size but moves in the opposite direction.
How should a surface be oriented in an electrostatic potential to allow the most flux to pass through it?The flux through a surface is at its maximum when it is horizontal to field (left panels) and the paddock vector is parallel to a vector, A. When a surface is perpendicular to the field (figure 3d), no field lines intersect it and there is no flux through it.
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the most energy per unit mass can be extracted from
Answers
The most energy per unit mass that can be extracted is from nuclear energy.
Nuclear energy is the energy that is obtained from changes in the nucleus of an atom. In nuclear reactions, a tiny amount of mass is transformed into energy. The energy that is released from nuclear reactions is much higher than the energy that is released from chemical reactions.
The potential energy that is present in the nucleus of an atom is known as nuclear energy. The energy can be released through different processes. The process of breaking down the nucleus of an atom is known as nuclear fission. The energy that is released from nuclear fission is used to generate electricity.
The process of combining the nuclei of atoms is known as nuclear fusion. This process releases a tremendous amount of energy. Nuclear energy is a very efficient way of generating electricity. It is considered as one of the best alternative energy sources. The most energy per unit mass can be extracted from nuclear energy.
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4. while sitting in a canoe, you encounter a wave disturbance created by a passing motorboat. your canoe bobs up and down every 2.5 s and the average distance between wave crests moving your boat is 3.6 m. how fast is the wave moving?
5. electromagnetic radiation travels at a speed of 3.0 x 108 m/s.
a. what is wavelength of a radio wave that has a frequency of 3.5 x105 hz?
b. what is the frequency of an x-ray that has a wavelength of 2.5 x 10-10 m?
Answers
The magnitude of the wave speed is the ratio between the distance of one wavelength and the period. The wave speed formula is the wavelength divided by the wave period or written v = λ/T.
The symbol λ (lambda) is the wavelength that has units of meters (m).
It is given a canoe up and down every 2.5 s. So, the period of a wave is T = 2.5 s
It is given that the average distance between a passing motorboat is 3.6 m. The distance between the crest of the wave is equal to the wavelength.
So, λ = 3.6 m
Then the speed of the wave is
v = λ/T
v = 3.6 m/2.5 s
v = 1.44 m/s
So, the wave is moving at speed of 1.44 m/s.
Wavelength is the length of one peak and one valley in the string which is denoted by lambda (λ). The wave period is the time it takes to travel one wavelength.
Given in the problem that electromagnetic radiation travels at a speed of 3.0 x 10⁸ m/s and frequency of 3.5 x10⁵ Hz, the wavelength is:
λ = v/f
λ = (3.0 x 10⁸) ÷ (3.5 x10⁵)
λ = 857.1 m
X-ray that has a wavelength of 2.5 x 10⁻¹⁰m.
f = v/λ
f = (3.0 x 10⁸) ÷ (2.5 x 10⁻¹⁰)
f = 1.4 x 10¹⁸ Hz
So, the frequency of an x-ray is 1.4 x 10¹⁸ Hz.
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a spider is crawling at 630 ft/hr. the room is 15 ft wide. How long does it take the spider to travel
Answers
The time taken for the spider crawling at 630 ft/hr to travel through the 15 ft wide room is 42 hours
How do I determine the time taken for the spider to travel?From the formula of speed, we can obtain a formula for calculating time as illustrated below:
Speed = Distance / time
Cross multiply
Speed × time = Distance
Divide both sides by speed
Time = Distance / speed
Using the above formula, we can obtain the time taken from the spider to travel through the room. Details as follow:
Speed of spider = 630 ft/hrDistance travel = 15 ftTime taken to travel =?Time = Distance / speed
Time = 630 / 15
Time = 42 hours
From the calculation made above, we can conclude that the time taken is 42 hours
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explain how the semicircular canals are specialized to assess rotational acceleration of the head, whereas the otolith organs are specialized to detect linear acceleration and static position of the head relative to the gravitational axis.
Answers
The semicircular canals are specialized to assess rotational acceleration of the head, while the otolith organs are specialized to detect linear acceleration and static position of the head relative to the gravitational axis. The semicircular canals contain fluid-filled channels arranged in three perpendicular planes, allowing them to detect angular movements of the head. On the other hand, the otolith organs consist of small calcium carbonate crystals suspended in gelatinous fluid, which respond to linear accelerations and changes in head position relative to gravity.
The semicircular canals are responsible for detecting rotational acceleration of the head. They are three fluid-filled canals positioned in different planes: the horizontal canal, anterior (superior) canal, and posterior (inferior) canal. Each canal has a bulge at one end called the ampulla, which contains hair cells that detect fluid movement. When the head rotates, the fluid within the canals also moves, bending the hair cells and signaling the brain about the rotational acceleration.
The otolith organs, consisting of the utricle and saccule, are specialized in detecting linear acceleration and static position of the head relative to the gravitational axis. These organs contain small calcium carbonate crystals called otoliths that are embedded in a gelatinous layer. When the head accelerates linearly or changes position relative to gravity, the otoliths move, causing the gelatinous layer to shift and stimulating the hair cells. This signals the brain about changes in linear acceleration and head position, including tilting or linear movements such as walking or riding in a vehicle.
In summary, the semicircular canals are designed to detect rotational acceleration, while the otolith organs are specialized in detecting linear acceleration and static position changes of the head relative to the gravitational axis. This division of sensory functions allows for a comprehensive assessment of different types of head movements and orientations in space.
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what is the frequency range of Audible sound
Answers
Answer:20Hz to 20000Hz
Explanation:
Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz.
A vernier scale has 10 division. It slides over, the Main scale whose 1 M.S.D is 1.0mm. If the number of division to the left side of zero of the vernier scale themain scale is 49 and the 8th verniear scale division coincides with the main scale, calculate the length in centimeter.
Answers
Answer:
If I read this correctly the main scale reads 49 mm = 4.9 cm
The vernier divides each mm into 10 parts and the vernier indicates that the final reading is 8/10 ths between 49 mm and 50 mm
Thus the final reading is 49.8 mm = 4.98 cm
When we describe both the speed and direction of motion, we are
descriting its acceleration.
True
False
Answers
Answer:
True
Explanation:
Gino is teaching his partner a dance by using eight counts.
He has included quarter-turns at the end of each eight count for a total of 32 counts.
When Gino's dance partner finishes the dance, she has faced a total of three walls.
What does Gino need to tell his partner through constructive feedback?
she performed too many quarter-turns.
She danced for longer than 32 counts.
She used bad technique for the dance.
She forgot an eight count or a quarter-turn.
Answers
Answer:
uhhh
Explanation:
Gino should tell his partner that she should have only done four quarter turns and should have finished the dance after 32 counts. This would have resulted in her facing only two walls at the end.
What is quarter?Quarter is a term used to describe the amount of rotation an object has undergone when it does a full turn. A quarter-turn is the equivalent of 90 degrees. Quarter are commonly used to measure the rotation of a wheel, a lever, a bolt, or any other object that can be rotated. It is also used in architecture to describe the amount of rotation of a staircase or other structure. In engineering, quarter-turns are used to measure the amount of torque that is being applied to a mechanism or device. Quarter are also used to measure the amount of rotation when adjusting the settings of a device.
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Mining would be classified as a _____ human activity for the environment. Negative or positive
Answers
Answer: negative
Explanation:
PLEASEE HELP!!!!!!Why are the youth not getting involved in their communities and voting? How is media influencing the voters?
Answers
Answer:
because they are underaged and prob dont care and also the gov thinks that the youth cant make a reasonable decision for them selves for sum like that and the media influnces them to by saying whats going on and who supports who
What is an abyssal fan
Answers
Answer:
Abyssal fans, also known as deep-sea fans, underwater deltas, and submarine fans, are underwater geological structures associated with large-scale sediment deposition and formed by turbidity currents
Explanation:
They are underwater deltas and submarine fans, they are associated with large scale sediment, and formed by turbidity currents.
If a gas at 4 atm of pressure occupies 500mL of volume, how many millileters will the gas have when the pressure is 8 atm? The formula: P1•V1=P2•V2
Answers
To determine the volume of the gas when the pressure changes from 4 atm to 8 atm, we can use the formula for Boyle's Law:
P1 * V1 = P2 * V2
Where:
P1 = initial pressure (4 atm)
V1 = initial volume (500 mL)
P2 = final pressure (8 atm)
V2 = final volume (unknown)
Plugging in the values into the formula:
(4 atm) * (500 mL) = (8 atm) * V2
Simplifying the equation:
2000 mL * atm = 8 atm * V2
Dividing both sides of the equation by 8 atm:
V2 = (2000 mL * atm) / 8 atm
V2 = 250 mL
Therefore, when the pressure changes from 4 atm to 8 atm, the gas will occupy 250 mL of volume.
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What happens when light from the Sun passes through any type of matter? The light slows down.
The light speeds up.
Most of the light is absorbed.
Most of the light is reflected.
Answers
Answer:
A
Explanation:
THE LIGHT SLOWS DOWN
When light from the Sun passes through any type of matter the light slows down.
Interaction of sunlight with matter:The behavior of light from the Sun as it interacts with any matter depends on the matter and its properties.
Since it comes through a vacuum and enters our atmosphere which is a denser medium and has a definite refractive index, the light slows down.
This also happens when light falls on material such as glass, water, and other transparent and translucent media. When it emerges out of such medium to a rarer medium like air, it speeds up to its initial speed.
A portion of the sunlight is absorbed by almost all the matter present on earth that's why something heats up when exposed to sunlight. While a considerable portion of the sunlight is reflected by the matter.
But the question says what happens when it passes through any matter. The answer is:
It slows down while passing through the matter since any matter is optically denser than the vacuum.
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