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Physics 101 Mechanics Q&A Archive of March 24, 2022

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March 24 of 2022

Problem B: mounting system for large structure maintenance When completing maintenance work on large complex building structures, a web of cables may be used to hang useful equipment that may be accessible to the crew. Figure B1 illustrates the static structure, being used to support a bucket.…
A 0.160 kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.880 m/s. It has a head-on collision with a 0.305 kg glider that is moving to the left with a speed of 2.10 m/s. Suppose the collision is elastic.
A small ball slides around a horizontal circle at height y inside a frictionless hemispherical bowl of radius R. Calculate the value of w if R =27.3cm and the ball is one third of the way up?
A banked highway curve with a radius of 233 m is designed for traffic moving at 77 km/h, but many motorists speed around the curve at 102 km/h. Determine the minimum coefficient of friction required between the tyres and the tar to prevent the cars from sliding off the road in the turn.
Hurry
Determine the forces acting in members \( B C, B E \) and \( F E \) of the truss use the method of sections.
An object is located 27.0 cm from a certain lens. The lens forms a real image that is twice as high as the object. What is the focal length of this lens?
A 100 g mass of unknown material at 100°C, is then placed in an aluminum calorimeter of 60g mass that contains 150 g of water at an initial temperature of 15°C. At equiliribrium the final temperature is 19.5°C, What is the specific heat of the material?
.)A 100 g aluminum calorimeter contains 200g of water at 15 degrees Celsius. If 100 g of lead at 50 degrees Celsius and 60 g of copper at 60 degrees Celsius are placed in the calorimeter, what is the final temperature in the calorimeter?
.)A 100 g aluminum calorimeter contains 200g of water at 15 degrees Celsius. If 100 g of lead at 50 degrees Celsius and 60 g of copper at 60 degrees Celsius are placed in the calorimeter, what is the final temperature in the calorimeter?
A 100 g mass of unknown material at 100°C, is then placed in an aluminum calorimeter of 60g mass that contains 150 g of water at an initial temperature of 15°C. At equiliribrium the final temperature is 19.5°C, What is the specific heat of the material?
A plane drops a package of supplies to a party of explorers .if the plane is travelling horizontal at 40m/s and is 100m above the ground .where does the package strike the ground
1. Find the reactions. Check if the computations are correct. 2. Draw the Shear and Moment diagrams by applying the load, shear, and moment relationships. 3. Locate the points of zero shear and moment if possible.
A rocket accelerates upward and the thrust of the engines overcome the frictional forces and the gravity acting against the rocket. Which of Newton's laws of motion best explains this situation?
The bob of a simple pendulum is pulled to the right by an angle \( \theta_{-} 0=10^{\circ} \) and then released from rest. If the period of oscillation equals to one second, what is the time needed for the bob to reach the angular position \( \theta=-5^{*} \) for the firs time? \( \left(g=10…
10.22. Bug on a hoop ** A hoop of radius \( R \) is made to rotate at constant angular speed \( \omega \) around a diameter, as shown in Fig. 10.20. A small bug of mass \( m \) walks at constant angular speed \( \Omega \) around the hoop. Let \( N \) be the total force that the hoop applies to…
Which of the following equations provides the proper relationship? 1) F_net = m a 2) m = F_net + a 3) m = F_net a 4) a = m F_net 5) a = m + F_net
10.22. Bug on a hoop ** A hoop of radius \( R \) is made to rotate at constant angular speed \( \omega \) around a diameter, as shown in Fig. 10.20. A small bug of mass \( m \) walks at constant angular speed \( \Omega \) around the hoop. Let \( N \) be the total force that the hoop applies to…
10.22. Bug on a hoop ** A hoop of radius \( R \) is made to rotate at constant angular speed \( \omega \) around a diameter, as shown in Fig. 10.20. A small bug of mass \( m \) walks at constant angular speed \( \Omega \) around the hoop. Let \( N \) be the total force that the hoop applies to…
Complete theis table
If a car location is given by the relation ???? = 7???? 2 – 2.1 (2????+1) 3 , what is the acceleration of the particle after t = 3 seconds.
Relative Acceleration Method—Graphical 7–26. For the compressor linkage shown in Figure P7.26, use the relative acceleration method to graphically determine the linear velocity and linear acceleration of the piston as the crank rotates clockwise at a constant rate of 1150 rpm.
Problem 3: Fig. 3 shows a system with mass m1 and mass m2 by a light, flexible, non-stretching string that passes over a stationary, frictionless pulley • a. Find the acceleration of each body and the tension in the string. • b. Apply to m1 = 2.00 kg and m2 = 3.00 kg, with ? = 30.0°, ?k = 0.15,…
The Ferrari is accelerating at 26.94 m/s every 3.6 seconds going west, carrying a total load (including Evelynn herself) of 1,571 kg. The 360 kW Ferrari is traveling 50 meters along the asphalt highway, whose friction value is known to be 10,777.06 N.
Help me please !
Two stars, both of which behave like ideal black bodies, radiate the same total energy per second. The cooler one has a surface temperature  and a diameter 3.0 times that of the hotter star. (a) What is the temperature of the hotter star in terms of  (b) What is the ratio of the peak-intensity…
Help me please !
An Olympic luge athlete with a mass of 55 kg rides a sled with a mass of 18 kg. In his medal run he has a personal best time as he enters the final straightaway before the finish line. Unfortunately, a spectator leans too far over the railing and falls, landing atop the luge, and the athlete…
There is a collision between two cars in an intersection. A car of mass 1250 kg, traveling east at 26.0 m/s, collides with a van of mass 2880 kg, traveling north at 16.5 m/s. The two cars stick together when they collide. Use conservation of momentum and graphical addition of the momentum…
This is a question from quantum physics textbook, chapter 12 checkup. Please help
A 0.160 kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.880 m/s. It has a head-on collision with a 0.305 kg glider that is moving to the left with a speed of 2.10 m/s. Suppose the collision is elastic.
A small ball slides around a horizontal circle at height y inside a frictionless hemispherical bowl of radius R. Calculate the value of w if R =27.3cm and the ball is one third of the way up?
A banked highway curve with a radius of 233 m is designed for traffic moving at 77 km/h, but many motorists speed around the curve at 102 km/h. Determine the minimum coefficient of friction required between the tyres and the tar to prevent the cars from sliding off the road in the turn.
An object is located 27.0 cm from a certain lens. The lens forms a real image that is twice as high as the object. What is the focal length of this lens?
A 100 g mass of unknown material at 100°C, is then placed in an aluminum calorimeter of 60g mass that contains 150 g of water at an initial temperature of 15°C. At equiliribrium the final temperature is 19.5°C, What is the specific heat of the material?
.)A 100 g aluminum calorimeter contains 200g of water at 15 degrees Celsius. If 100 g of lead at 50 degrees Celsius and 60 g of copper at 60 degrees Celsius are placed in the calorimeter, what is the final temperature in the calorimeter?
.)A 100 g aluminum calorimeter contains 200g of water at 15 degrees Celsius. If 100 g of lead at 50 degrees Celsius and 60 g of copper at 60 degrees Celsius are placed in the calorimeter, what is the final temperature in the calorimeter?
A 100 g mass of unknown material at 100°C, is then placed in an aluminum calorimeter of 60g mass that contains 150 g of water at an initial temperature of 15°C. At equiliribrium the final temperature is 19.5°C, What is the specific heat of the material?
A plane drops a package of supplies to a party of explorers .if the plane is travelling horizontal at 40m/s and is 100m above the ground .where does the package strike the ground
A rocket accelerates upward and the thrust of the engines overcome the frictional forces and the gravity acting against the rocket. Which of Newton's laws of motion best explains this situation?
10.22. Bug on a hoop ** A hoop of radius \( R \) is made to rotate at constant angular speed \( \omega \) around a diameter, as shown in Fig. 10.20. A small bug of mass \( m \) walks at constant angular speed \( \Omega \) around the hoop. Let \( N \) be the total force that the hoop applies to…
Which of the following equations provides the proper relationship? 1) F_net = m a 2) m = F_net + a 3) m = F_net a 4) a = m F_net 5) a = m + F_net
Complete theis table
If a car location is given by the relation ???? = 7???? 2 – 2.1 (2????+1) 3 , what is the acceleration of the particle after t = 3 seconds.
Relative Acceleration Method—Graphical 7–26. For the compressor linkage shown in Figure P7.26, use the relative acceleration method to graphically determine the linear velocity and linear acceleration of the piston as the crank rotates clockwise at a constant rate of 1150 rpm.
Problem 3: Fig. 3 shows a system with mass m1 and mass m2 by a light, flexible, non-stretching string that passes over a stationary, frictionless pulley • a. Find the acceleration of each body and the tension in the string. • b. Apply to m1 = 2.00 kg and m2 = 3.00 kg, with ? = 30.0°, ?k = 0.15,…
Help me please !
Help me please !
There is a collision between two cars in an intersection. A car of mass 1250 kg, traveling east at 26.0 m/s, collides with a van of mass 2880 kg, traveling north at 16.5 m/s. The two cars stick together when they collide. Use conservation of momentum and graphical addition of the momentum…
This is a question from quantum physics textbook, chapter 12 checkup. Please help