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Physics 101 Mechanics Q&A Archive of December 8, 2021

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December 8 of 2021

Figure 10.4 In Figure 10.4, given force F Is applied to a rod several different ways: In which case is the torque due to F about the pivot P greatest?
La siguiente gráfica muestra la descripción del movimiento de un cuerpo describen el movimiento del cuerpo en la gráfica. Tomado de: Colege Phycics' Sath Edton Senay.Faughn La velocidad promedio entre 5 y 7 segundos es \( -7.5 \mathrm{~m} / \mathrm{s} \) True False
Two uniform section members and material are in contact as shown. The frames each have: a mass of 3 kg, a length of 1 meter and a section of negligible dimensions. At the point of contact of the members, the coefficients of static and kinetic friction are respectively 0.40 and 0.30. For an…
chfer? are te tead the axis labels carefofy?
An explosion occurs at a distance of $6.00 \mathrm{~km}$ from a person. How long after the explosion does the person hear it? Assume the temperature is $14.0^{\circ} \mathrm{C}$. We need to determine the speed of sound at $14.0^{\circ} \mathrm{C}$, knowing its value at $0{ }^{\circ}…
A mass M is connected to a spring with spring constant k, and it is oscillating with a period T. If 45 kg is added to the original mass, the period is found to quadruple. The original mass, M, is:
A 16 kg cube with sides of length 0.2 meters is released from rest while half submerged in water (density 1000 kg/mÂł). What will be the magnitude of its initial accleration?
A 16 kg cube with sides of length 0.2 meters is released from rest while half submerged in water (density 1000 kg/m3) . What will be the magnitude of its initial accleration?
A 3 [kg] ball collides with a 2 [kg] rock. The impulse on the ball during the collision lasts for 0.5 [s] and is measured to be (?18)x^[kg?ms]. If the velocity of the ball immediately before the collision is +4x^ [m/s], what is the velocity of the ball immediately after the collision?
A 10.0-kg mass is traveling to the right with a speed of 2.00 m/s on a smooth horizontal surface when it collides with and sticks to a second 10.0-kg mass that is initially at rest but is attached to a light spring with force constant 170.0 N/m. (a) Find the frequency, amplitude, and…
A child in a sled slides down a very slippery (frictionless) slope. The total mass of the child and sled is 22 [kg]. The child passes through point 1 traveling at 3 [m/s] and point 2 at 12 [m/s]. How much higher is point 1 as measured from point 2 along the vertical?
Draw an electrical circuit made up of a battery made up of four batteries of 3 V each, with an open switch, a bulb and two 2.50 ohm resistors every 3 connected in parallel. Adds a voltmeter to measure the voltage in the first resistor that will be traversed by the current (for your…
Two bodies of masses 50 kg and 20 kg are connected by a thread and move along a horizontal plane under the action of 400 N force applied to the body of mass 50 kg. Determine the acceleration of the body and tension in the thread
A box contains 5 red balls and 3 blue balls. If two balls are drawn at random without replacement, what is the probability that both balls are red?
Please view document for questions: https://docs.google.com/document/d/1v7fAIfShqOjC-7pKGqlwPMHSbH-vx0TDznvnKmFtre4/edit?usp=sharing
Un Disco de mĂşsica se mueve con una rapidez angular de 300 rpm. Si una gota de aceite de masa 5.0 gr cae sobre el CD a 4.0 cm del centro, la rapidez angular del sistema es (La inercia rotacional del CD es 270 grcm2
Un Disco de mĂşsica se mueve con una rapidez angular de 300 rpm. Si una gota de aceite de masa 5.0 gr cae sobre el CD a 4.0 cm del centro, la rapidez angular del sistema es (La inercia rotacional del CD es 270 grcm2
Un CD de mĂşsica se mueve con una rapidez angular de 300 rpm. Si una gota de aceite de masa 5.0 gr cae sobre el CD a 4.0 cm del centro, la rapidez angular del sistema es (La inercia rotacional del CD es 270 grcm2
Consider a hypothetical racing game where hundreds of cars race on a field. The updateRacers method shown below updates the cars and eliminates the ones that collide.
A skier with a mass of 63.0 kg starts from rest and skis down an icy (frictionless) slope that has a length of 31.0 m at an angle of 32.0° with respect to the horizontal. At the bottom of the slope, the path levels out and becomes horizontal, the snow becomes less icy, and the skier begins to…
Two vertical slits of width 2.22 ?m are separated by 14 ?m and are illuminated by a laser with wavelength 660 nm. If a screen is placed at a distance of 1.78 m and we look at a location 38.7 cm horizontally from the center of the screen, what is the percentage of the single-slit intensity that…
A car rounds a banked curve as discussed in Example 6.4 and shown in Figure 6.5. The radius of curvature of the road is the banking angle is and the coefficient of static friction is . (a) Determine the range of speeds the car can have without slipping up or down the road. (b) Find the…
Suppose 1.80 mol of oxygen is heated at a constant pressure of 1.00 atm from 10.0°C to 24.0°C
It has been estimated that the peak force transmitted through the Achilles tendon in humans during running is 9 kN. If the tendon cross sectional area is 60.8 mm2, and the tendon experiences a strain of 3.2 %, what is its elastic modulus? Answer in MPa.
Stress fractures occur in bones that undergo mechanical fatigue. Typically these occur with repetitive loading. Persons who run long distances regularly are particularly susceptible to stress fractures. If the typical peak ground reaction force during running is 2.4 * body weight, and the…
A ligament has a Young’s modulus of 1.7 GPa. It experiences a strain of 4.3%. If its cross-sectional area is 42.1 mm2, what is the estimated applied force in kN?
Consider the travelling wave y(x, t) = 7.4 sin (8.52t + 2.13x) m Which ONE of the following statements is FALSE? Select one: a. The frequency of the wave is 1.36 Hz b. The wavelength of the wave is 2.95 m c. The distance from a crest to a trough is 7.40 m d. The wave is…
The frequency of sound produced by a stationary source is perceived as being 22.2% lower by a moving listener. Taking the speed of sound in air as 344 m.s-1, the velocity (in m.s-1) of the listener is:
A brass calorimeter of mass 1.1 kg is filled with 1.6 kg of water of temperature 37.5oC . An unknown metal of mass 2.7 kg and temperature 4.2oC is inserted into the calorimeter. The final equilibrium temperature of the system is 27.1oC. Calculate the specific heat capacity of the unknown…
There are three containing 1 liter, 2 liters, and 3 liters of water respectively, they are supplied with heat until they come to a boil. If the initial temperature of the water in the three containers is the same, the amount of heat absorbed by the water up to the moment they boil is?
How much energy heat is needed to convert 10kg of water at 50 degrees C into water vapor at 120 degrees C (in scientific notation)?
A car 1200 kg is in a skid Force of friction 3200N and force of air resistance 1600N
Figure 10.4 In Figure 10.4, given force F Is applied to a rod several different ways: In which case is the torque due to F about the pivot P greatest?
chfer? are te tead the axis labels carefofy?
An explosion occurs at a distance of $6.00 \mathrm{~km}$ from a person. How long after the explosion does the person hear it? Assume the temperature is $14.0^{\circ} \mathrm{C}$. We need to determine the speed of sound at $14.0^{\circ} \mathrm{C}$, knowing its value at $0{ }^{\circ}…
A mass M is connected to a spring with spring constant k, and it is oscillating with a period T. If 45 kg is added to the original mass, the period is found to quadruple. The original mass, M, is:
A 16 kg cube with sides of length 0.2 meters is released from rest while half submerged in water (density 1000 kg/mÂł). What will be the magnitude of its initial accleration?
A 16 kg cube with sides of length 0.2 meters is released from rest while half submerged in water (density 1000 kg/m3) . What will be the magnitude of its initial accleration?
A 3 [kg] ball collides with a 2 [kg] rock. The impulse on the ball during the collision lasts for 0.5 [s] and is measured to be (?18)x^[kg?ms]. If the velocity of the ball immediately before the collision is +4x^ [m/s], what is the velocity of the ball immediately after the collision?
A 10.0-kg mass is traveling to the right with a speed of 2.00 m/s on a smooth horizontal surface when it collides with and sticks to a second 10.0-kg mass that is initially at rest but is attached to a light spring with force constant 170.0 N/m. (a) Find the frequency, amplitude, and…
A child in a sled slides down a very slippery (frictionless) slope. The total mass of the child and sled is 22 [kg]. The child passes through point 1 traveling at 3 [m/s] and point 2 at 12 [m/s]. How much higher is point 1 as measured from point 2 along the vertical?
Draw an electrical circuit made up of a battery made up of four batteries of 3 V each, with an open switch, a bulb and two 2.50 ohm resistors every 3 connected in parallel. Adds a voltmeter to measure the voltage in the first resistor that will be traversed by the current (for your…
Two bodies of masses 50 kg and 20 kg are connected by a thread and move along a horizontal plane under the action of 400 N force applied to the body of mass 50 kg. Determine the acceleration of the body and tension in the thread
A box contains 5 red balls and 3 blue balls. If two balls are drawn at random without replacement, what is the probability that both balls are red?
Please view document for questions: https://docs.google.com/document/d/1v7fAIfShqOjC-7pKGqlwPMHSbH-vx0TDznvnKmFtre4/edit?usp=sharing
Un Disco de mĂşsica se mueve con una rapidez angular de 300 rpm. Si una gota de aceite de masa 5.0 gr cae sobre el CD a 4.0 cm del centro, la rapidez angular del sistema es (La inercia rotacional del CD es 270 grcm2
Un Disco de mĂşsica se mueve con una rapidez angular de 300 rpm. Si una gota de aceite de masa 5.0 gr cae sobre el CD a 4.0 cm del centro, la rapidez angular del sistema es (La inercia rotacional del CD es 270 grcm2
Un CD de mĂşsica se mueve con una rapidez angular de 300 rpm. Si una gota de aceite de masa 5.0 gr cae sobre el CD a 4.0 cm del centro, la rapidez angular del sistema es (La inercia rotacional del CD es 270 grcm2
Two vertical slits of width 2.22 ?m are separated by 14 ?m and are illuminated by a laser with wavelength 660 nm. If a screen is placed at a distance of 1.78 m and we look at a location 38.7 cm horizontally from the center of the screen, what is the percentage of the single-slit intensity that…
Suppose 1.80 mol of oxygen is heated at a constant pressure of 1.00 atm from 10.0°C to 24.0°C
It has been estimated that the peak force transmitted through the Achilles tendon in humans during running is 9 kN. If the tendon cross sectional area is 60.8 mm2, and the tendon experiences a strain of 3.2 %, what is its elastic modulus? Answer in MPa.
Stress fractures occur in bones that undergo mechanical fatigue. Typically these occur with repetitive loading. Persons who run long distances regularly are particularly susceptible to stress fractures. If the typical peak ground reaction force during running is 2.4 * body weight, and the…
A ligament has a Young’s modulus of 1.7 GPa. It experiences a strain of 4.3%. If its cross-sectional area is 42.1 mm2, what is the estimated applied force in kN?
Consider the travelling wave y(x, t) = 7.4 sin (8.52t + 2.13x) m Which ONE of the following statements is FALSE? Select one: a. The frequency of the wave is 1.36 Hz b. The wavelength of the wave is 2.95 m c. The distance from a crest to a trough is 7.40 m d. The wave is…
The frequency of sound produced by a stationary source is perceived as being 22.2% lower by a moving listener. Taking the speed of sound in air as 344 m.s-1, the velocity (in m.s-1) of the listener is:
A brass calorimeter of mass 1.1 kg is filled with 1.6 kg of water of temperature 37.5oC . An unknown metal of mass 2.7 kg and temperature 4.2oC is inserted into the calorimeter. The final equilibrium temperature of the system is 27.1oC. Calculate the specific heat capacity of the unknown…
There are three containing 1 liter, 2 liters, and 3 liters of water respectively, they are supplied with heat until they come to a boil. If the initial temperature of the water in the three containers is the same, the amount of heat absorbed by the water up to the moment they boil is?
How much energy heat is needed to convert 10kg of water at 50 degrees C into water vapor at 120 degrees C (in scientific notation)?
A car 1200 kg is in a skid Force of friction 3200N and force of air resistance 1600N