The mass of the object can be found using the formula: m = 37.1 kg and a = 9.13 m/s, and force F = 1.92 N.
1. Mass Finding: Let F = ma =\(mv^2/r\)
F is the centripetal force, m is the mass of the object, v is the velocity and r is the radius of the circular path.
Plugging in the given values, we get:
1345 N = m x 36.2 m/s
m = 37.1 kg
a = \((2.4 m/s)^2/1.5 m\)
a = 3.84 m/s
2. The centripetal force can be found using the formula:
F = \(mv^2/r,\) where m is the mass of the tetherball, v is its tangential velocity and r is the length of the tetherball rope.
Plugging in the given values, we get:
F = \(0.4 kg * (2.4 m/s)^2/1.5 m\)
F = 1.92 N
The centripetal force experienced by Melissa and Cody together can be found using the formula:
3. F = (m1 + m2) x a x r, where m1 and m2 are the masses of Melissa and Cody respectively, a is the centripetal acceleration and r is the radius of the circular path.
Plugging in the given values, we get:
F = (55 kg + 65 kg) x 2.2 m/s x 6 m
F = 2376 N
68 N = m x (2.7 m/s)/0.8 m
m = 7.24 kg
a = (2.7 m/s)/0.8 m
a = 9.13 m/s
Learn more about mass Visit: brainly.com/question/86444
#SPJ4
b) What was the relative speed
of the two spacecraft as they separated?
The relative speed of the two spacecraft as they separated was approximately 1 meter per second. The Apollo Lunar Module (LM) and the Command Module (CM) were connected during the mission to the moon.
After the LM was used to land on the moon's surface, it was time for the spacecraft to separate so that the astronauts could return to Earth. The LM had to perform a "lift off" and ascent stage maneuver to get back to the CM in orbit. As the LM lifted off, it started moving away from the CM at a slow speed. This was necessary to prevent any collisions between the two spacecraft. The relative speed of the LM and the CM was approximately 1 meter per second as they separated. This slow speed allowed for a safe and smooth separation between the two spacecraft. Once the LM rendezvoused with the CM, the two spacecraft docked together and the astronauts returned to Earth.
To know more about Apollo Lunar visit :
https://brainly.com/question/12122507
#SPJ11
Two identical baseballs are thrown with the same speed toward home plate. Ball A is spinning rapidly as it travels. Ball B is not spinning as it travels. (a) Which ball has more total mechanical energy? Explain (b) Which ball requires more work to throw? Explain
(c) If a pitcher Wants t0 throw two balls-one spinning and one not-that require the same amount of work to throw; which will travel faster toward home plate? Explain
If a pitcher wants to throw two balls requiring the same amount of work to throw, the ball without spin (Ball B) will travel faster toward home plate.
(a) Ball A, which is spinning rapidly, has more total mechanical energy because rotational kinetic energy is added to its translational kinetic energy. The spin contributes to the overall energy of the ball.
(b) Ball A, which is spinning rapidly, requires more work to throw because the rotational motion adds an additional component of kinetic energy that needs to be provided by the pitcher.
(c) If a pitcher wants to throw two balls requiring the same amount of work to throw, the ball without spin (Ball B) will travel faster toward home plate. This is because the absence of spin allows for better aerodynamic efficiency, reducing air resistance and allowing the ball to maintain higher translational speed.
To learn more about mechanical energy click here: brainly.com/question/29509191
#SPJ11
g physics You decided to oscillate a baseball bat about two different axes. Through your trials and errors, you find out that there are two points that give the same period, 1.65 s, when the bat makes simple harmonic oscillations. What is the distance between the two special points you found
In the given scenario, we are oscillating a baseball bat around two different axes. During some trials and errors, it is found that the two points that are 1.65 s apart give the same period when the bat makes simple harmonic oscillations. We need to calculate the distance between the two special points.
Let's understand the concept of simple harmonic motion (SHM) and period before calculating the distance between the two points that give the same period. SHM: When an object moves back and forth within the limits of its elastic properties, with the acceleration proportional to the distance from a fixed point, we call it simple harmonic motion (SHM).The time required for the particle or object to complete one full oscillation cycle or back-and-forth motion is called the period. It is represented by the symbol T.
We know that T = 2π√(m/k), where m is the mass of the object in SHM and k is the spring constant.The period T is constant for an oscillating object, regardless of its amplitude. Now, let's come back to the main answer of the question. We can calculate the distance between the two special points using the given information as follows:Given, T = 1.65 s The time period is same for both points and is given as 1.65 s.
To know more about acceleration visit :
https://brainly.com/question/2303856
#SPJ11
Determine the cross-sectional area of a copper conductor if its resistance is 0.2 ohm and its mass is 0.2 kg. So:
R=0.2 Ohm, m=0.2 kg, ρ=0.017 m²/m, S=?
The cross-sectional area of a copper conductor if its resistance is 0.2 ohm and its mass is 0.2 kg is 61.7 m²
Considering the conductor is a wire,
Density = m / V
V = A l
ρ = R A / l
m = Mass
V = Volume
l = Height / Length
R = Resistance
ρ = Resistivity
R = 0.2 Ω
m = 0.2 kg
ρ = 0.017 Ω m
Density of copper = 8.96 * 10³ kg / m³
V = 8.96 * 10³ / 0.2
V = 44.8 * 10³ m³
A l = 44.8 * 10³
l = 44.8 * 10³ / A
ρ = R A / l
0.017 = 0.2 A / l
l = 0.2 A / 0.017
Equating both the values of l,
44.8 * 10³ / A = 0.2 A / 0.017
761.6 = 0.2 A²
A² = 3808
A = 61.7 m²
Therefore, the cross-sectional area of a copper conductor is 61.7 m²
To know more about Resistance of a conductor
https://brainly.com/question/15208203
#SPJ1
which detection method or methods measure the gravitational tug of a planet on its star, allowing us to estimate planetary mass?
Astrometric and Doppler's method measure the gravitational tug of a planet on its star, allowing us to estimate planetary mass.
Astrometric method measures the movement of star's location in the sky. The method is efficient in detecting the planet as it recognizes the changes in star's position due to centre of mass of the planet. Doppler method is an indirect way to identify the presence of planet. The movement of star is understood and analysed for planet detection through this method. Planet is defined as the body that spins around its own axis and revolves in an orbit and reflects the light received from some source.
Learn more about astrometric method -
https://brainly.com/question/13092561
#SPJ4
the different phases of the moon are caused by the moon's near 28-day_
Answer:
lol
Explanation:
at which of these times of day would you expect to find the sun in the west?
You would expect to find the sun in the west at sunset.
The position of the sun in the sky changes throughout the day due to the rotation of the Earth on its axis. In the morning, the sun rises in the east, reaches its highest point in the sky around noon, and sets in the west in the evening.
Sunset refers to the time when the sun dips below the horizon, and from the perspective of an observer on the Earth, it appears as though the sun is setting in the west. This is because the Earth rotates on its axis from west to east, causing the sun to appear to rise in the east and set in the west. The exact direction of the sun during sunset will depend on the observer's latitude and the time of year.
Hence option B is correct.
To know more about position of the sun, here
https://brainly.com/question/19133982
#SPJ4
--The given question is incomplete, the complete question is:
"at which of these times of day would you expect to find the sun in the west?
A) At morning B) At sunset C) At noon"--
In order to increase the rate of acceleration of a car, you should apply more
force to it. true or false
Answer:
True
Explanation:
Because with more force the car will move faster than it did before!!!
a basketball rolling across a flat floor has___ energy. PLZ HELP
Answer:
kinetic energy
Explanation:
I know the answer because Im built differen
A large crate is pushed across the floor with an effort of 45 Newtons. The box is pushed a distance of 3.5 meters. How much work is done?
Answer:
\(\boxed {\boxed {\sf 157.5 \ Joules }}\)
Explanation:
Work is equal to the product of force and distance.
\(W=F*d\)
The box is being pushed with an effort (force) of 45 Newtons and the distance is 3.5 meters.
\(F= 45 \ N \\d= 3.5 \ m\)
Substitute the values into the formula.
\(W= 45 \ N * 3.5 \ m\)
Multiply.
\(W= 157.5 \ N*m\)
1 Newton meter is equal to 1 Joule Our answer of 157.5 N*m equals 157.5 J\(W= 157.5 \ J\)
157.5 Joules of work are done on the crate.
1. A heat engine has a cold reservoir that is 285 degrees Kelvin which accepts 370 J of heat, and a hot reservoir that is 371 degrees Kelvin which gives off 425 J of heat. Calculate the maximum and actual efficiencies of this engine.
2. A system that has a total change in entropy of 675 J/K and has received 243 J of heat energy will be at what temperature?
3. Assume that the above system maintains a constant pressure, and increases in volume by 2.5 m 3 while doing this work. What is the pressure of the system?
I can't help with this one.
The maximum efficiency of the heat engine is 23%.
The actual efficiency of the heat engine is 13%.
The temperature of the system is 273.36 ⁰C.
The pressure of the system is 607.5 Pa.
The given parameters:
Cold reservoir temperature, Tc = 285 KHeat, qc = 370 JHot reservoir temperature, Th = 371 KHeat of the hot reservoir, qh = 425 JThe maximum efficiency of the heat engine is calculated as follows;
\(\eta = 1- \frac{T_c}{T_h} \\\\ \eta = 1 - \frac{285}{371} \\\\ \eta = 0.23\\\\ \eta = 23 \ \%\)
The actual efficiency of the heat engine is calculated as follows;
\(\eta = 1 - \frac{q_c}{q_h} \\\\ \eta = 1 - \frac{370}{425} \\\\ \eta = 0.13\\\\ \eta = 13\ \%\)
The temperature of the system is calculated as follows;
\(\Delta S = \frac{\Delta H}{T} \\\\ T = \frac{\Delta H}{\Delta S}\\\\ T = \frac{243}{675} \\\\ T = 0.36 \ K\\\\ T = 273.36 \ ^0C\)
The pressure of the system is calculated as follows;
\(W = P \Delta V\\\\ P = \frac{W}{\Delta V} \\\\ P = \frac{243}{2.5} \\\\ P = 607.5 \ Pa\)
Learn more about efficiency of heat engine here: https://brainly.com/question/10955336
What is the calculated value of the moment of inertia of a Disk+Ring placed on the rotary Motion Sensor, given the following measurements: Hanging mass (including hanger) - 59 s. radius of the three step pulley - 2 cm, and angular acceleration of the disk (when the hanging mass falls down 17 rad/s2. Multiply your answer by 1000, and write answer in kg m?
Moment of Inertia (I) = 0.00068 kg m² × 1000 = 0.68 kg m.
To calculate the moment of inertia of a Disk+Ring system placed on the rotary Motion Sensor, we will use the following formula:
Moment of Inertia (I) = Torque (τ) / Angular Acceleration (α)
Given the measurements:
Hanging mass (including hanger) = 59 g (convert to kg by dividing by 1000) = 0.059 kg
Radius of the three-step pulley = 2 cm (convert to m by dividing by 100) = 0.02 m
Angular acceleration (α) = 17 rad/s²
First, we need to calculate the torque (τ) using the hanging mass and radius of the pulley:
Torque (τ) = Force (F) × Radius (r)
Force (F) = Mass (m) × Gravity (g) = 0.059 kg × 9.81 m/s² = 0.57839 N
Torque (τ) = 0.57839 N × 0.02 m = 0.0115678 Nm
Now, we can calculate the moment of inertia (I):
Moment of Inertia (I) = Torque (τ) / Angular Acceleration (α) = 0.0115678 Nm / 17 rad/s² = 0.00068 kg m²
Since we need to multiply the answer by 1000, the final result is:
Moment of Inertia (I) = 0.00068 kg m² × 1000 = 0.68 kg m.
To learn more about gravity, refer below:
https://brainly.com/question/31321801
#SPJ11
what is the weight of a 45kg box
____ N
The weight of a \(45 kg\) box is \(441.45 N\).
Weight refers to the measure of the force exerted on an object due to the gravitational pull of the Earth.
Given the mass of the box is \(m=45 kg\).
The weight of an object (\(W\)) can be found by multiplying the mass of the object (\(m\)) by the acceleration due to gravity (\(g\)).
So, \(W=mg\).
It is known that acceleration due to gravity, \(g=9.81 m/s^2\).
Hence, the weight of the box, \(W=(45kg)\times (9.81 m/s^2)\).
\(\Rightarrow W=441.45 (kg\cdot m/s^2)\\\Rightarrow W=441.45 N\)
Therefore, the weight of the box is \(441.45 N\).
Learn more about the weight here: brainly.com/question/86444
if an object is speeding up, . its acceleration is positive its acceleration can be positive or negative depending on the direction of motion its acceleration is negative
If an object is speeding up its acceleration can be positive or negative depending on the direction of motion.
What is positive and negative acceleration?According to mathematics, a negative acceleration indicates that the velocity will be subtracted, while a positive acceleration indicates that the velocity will be increased.
In physics,
A positive acceleration indicates a rising velocity over time.
Negative acceleration describes a speed decrease over time.
A bus or car going at an accelerating rate is said to have positive acceleration.
We may say that it is speeding up in the direction it is moving.
When we use the brake in the previous example, the speed of the car reduces.
Then it experiences a deceleration.
To learn more about acceleration, refer
https://brainly.com/question/18608559
#SPJ4
Which is greater in magnitude, the heat of fusion or the heat of vaporization of water?.
In comparison to heat of fusion, water evaporation heat is stronger in magnitude. Compared to the heat of fusion, the heat of vaporization of water is significantly greater.
Clarification of the Problem For any substance to change from its solid phase to its liquid phase, a certain amount of energy is needed, known as the heat of fusion. Heat of vaporization, also known as enthalpy of vaporization, is the quantity of enthalpy (heat energy) required to change a liquid substance into a gas or vapour. fusion is measured in Joules per Mole (J/mol), or calorie equivalents, at intervals (C).
Water evaporates as a result of heat. As a result of the molecules' rapid movement and vibration, water vapour is produced, which is released into the atmosphere.
Learn more about vaporization here
https://brainly.com/question/12625048
#SPJ4
Sulfur dioxide is used to retain the color of fruit after drying. What is the chemical formula of this covalent compound? S1O2 SO2 S2O SO
Explanation:
SO2 is the best answer
please give brainliest and helpful
Answer: SO2
Explanation:
HELPPP
10m/s convert into mm/s
Answer: 10000 mm's
Explanation: Online calculator to convert meters per second to millimeters per second (m/s to mm/s) with formulas, examples, and tables.
which method relies on the mass of a dark object revealing its presence?
The method that relies on the mass of a dark object revealing its presence is gravitational lensing.
Gravitational lensing occurs when the gravitational field of a massive object, such as a galaxy or a cluster of galaxies, bends and distorts the path of light passing near it. This effect can magnify and distort the light from more distant objects, making them appear brighter and sometimes creating multiple images or arcs of the source.
In the case of dark objects, which are not directly observable through their emitted or reflected light, their presence can be inferred through the gravitational lensing they cause. The gravitational pull of a dark object, such as a black hole or a massive compact halo object (MACHO), can bend and redirect light from background sources, revealing the presence of the dark object. By studying the patterns and distortions in the lensed light, scientists can estimate the mass and location of the dark object responsible for the lensing effects.
Gravitational lensing has proven to be a valuable tool for detecting and studying dark matter, as well as other elusive astronomical objects that do not emit significant amounts of detectable radiation.
To learn more about mass
https://brainly.com/question/86444
#SPJ11
What is E equal to in relativity?
\( \huge \underline \mathtt \colorbox{cyan}{E=mc squared}\)
(E=mc^2)
Where:m is mass
And c is a constant for speed of light
Answer:
One of the most famous and well-known equations in all of human history, E = mc^2, translates to "energy is equal to mass times the speed of light squared." In other words, wrote PBS Nova, energy (E) and mass (m) are interchangeable. They are, in fact, just different forms of the same thing.
Explanation:
this is right answer
how often do industrial oxygen cylinders need to be tested
Answer:
5 years\(\)
A ball has a potential energy of 17.6J and a kinetic energy of 2.6 J. What is the total
mechanical energy of the ball?
2.666k is the total energy
Which is a valid ionic compound?
sodide chlorine
sodium chlorine
sodium chloride
sodide chloride
Answer:
sodium chloride
Explanation:
Sodium chloride is an ionic compound. The ions of the sodium chloride compound is sodium ion and chloride ion. The sodium ion is cation while the chloride ion is an anion. Sodium chloride is a very stable compound because of the mutual attraction of oppositely charged ions.
Hold your index finger and middle fingers close to each other, leaving a small slit between them about 1 mm in width. Look through the slit into a source of light such as the window or lamp (NOT THE SUN). You will need to look with one eye up close to the slit. Why do the vertical black lines show up when your fingers are close together but not when they are far apart? Explain.
Answer:
I would say tunnel vision cause your only using one eye and if your looking through a tiny space your vision gets blury
Explanation:
A baseball player dives head-first into
second base and slows down while sliding on the infield dirt.
Of the forces listed, identify which act upon the player.
1.Normal
2.Gravity
3.Applied
4.Friction
5.Tension
6. Air Resistance
Answer:
Explanation:
Discussion
The ones that are certain are
Normal GravityFrictionIf you have a normal, and the player slides into 2nd, and stops (which he must before he is tagged), then there must be friction involved. There must be gravity, or he would keep going up.
I don't think there is tension. There might be some Air Resistance, but that force is very tiny. Don't be surprised if you answer includes Air Resistance, but I won't try it to begin with.
A steel beam is being lowered at steady speed by a crane. How many force vectors would be shown on a free-body diagram if the crane lifts the beam using a single cable?
There would be two force vectors shown on a free-body diagram if the crane lifts the beam using a single cable that are tension in the single cable and weight of the beam.
The net force on the beam will be resulting to zero when the steel beam is moving at constant speed without any acceleration acting on it. The two force vectors such as : tension and weight act opposite to each other. Tension is the force the crane is exerting on the beam in order to lift it, while the weight is exerted by the gravitational force of earth on the steel beam acting downwards to the tension of cable. Hence, these two force vectors would be shown in the free body diagram.
To learn more about force click here https://brainly.com/question/13191643
#SPJ4
7
How should an Ammeter be connected into a circuit?
(1 Point)
In parallel with the wire
In parallel with the battery
In series
Answer:
In series
Explanation:
Ammeter is used in electric circuits to measure the amount electric current that passes through the circuit.
Now, as a rule, this ammeter is always connected in series with the wires in the circuit where the current is being measured so that sufficient current can pass through it.
6. If the energy removed from an engine as heat during one cycle is 6.0 × 10³ J, how
much energy must be added to the engine during one cycle in order for it to
operate at 31 percent efficiency?
Describe What would happen to the temperature of boiling water if you added energy?
When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation).
If the liquid is a mixture, as the more volatile components boil off, the boiling point rises, so adding energy causes the temperature to go up. If you add enough energy, all the liquid evaporates, so there is no liquid temperature
Which event happens FIRST in the presidential election process?
A. The president is chosen by popular vote.
B. Americans vote for electors.
C. All 50 governors prepare their states' Certificates of Ascertainment.
D. Congress gathers to count the electoral votes.
Physics - Electricity and Magnetism
A ceiling fan operates at three speeds, using 120 V of electricity from the wall. At low speeds, it uses 0.25 A. Calculate the resistance needed to generate that current. Then in 1-2 sentences, describe how the resistance would change at medium and high speeds if larger currents are needed at those speeds. Your answer should include the calculated resistance and a sentence describing your reasoning.
Answer:
480 Ohms for the calculations
Explanation:
For the calculations:
V = 120 and I = 0.25
V = IR
R = V/I
R = 120/0.25
R = 480 Ohms
For the sentences, I am so sorry, I do not have them yet!
I. The resistance which is needed to generate a current of 0.25 Ampere in the ceiling fan is 480 Ohms.
II. Since current is inversely proportional to the resistance in the electrical circuit, an increase in the current (larger currents) flowing into the electrical circuit of the ceiling fan would cause the resistance to decrease in magnitude at medium and high speeds.
Given the following data:
Voltage = 120 VoltsCurrent = 0.25 AmpereTo calculate the resistance needed to generate that current, we would apply Ohm's law:
Ohm's law states that at constant temperature, the current flowing through an electrical circuit is directly proportional to the voltage (potential difference) applied across the two terminals of the electrical circuit and inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
\(V=IR\)
Where;
V is the voltage measured in Volts.I is the current measured in Ampere.R is the resistance measured in Ohms.Making R the subject of formula, we have:
\(R =\frac{V}{I}\)
Substituting the given parameters into the formula, we have;
\(R=\frac{120}{0.25}\)
Resistance, R = 480 Ohms
Since current is inversely proportional to the resistance in the electrical circuit, an increase in the current (larger currents) flowing into the electrical circuit of the ceiling fan would cause the resistance to decrease in magnitude at medium and high speeds.
In conclusion, the larger the current, the lower the resistance would be at both medium and high speeds.
Read more on resistance here: https://brainly.com/question/23754122