Homework Answers
For part d the answer is t= 6.184 sec
Same as the third way done by you
2) A uniform solid ball has a mass of 20 g and a radius of 5...
2) A uniform solid ball has a mass of 20 g and a radius of 5 cm. It rests on a horizontal surface. A sharp force is applied to the ball in the horizontal direction 9 cm above the surface. The force rises linearly from 0 to a peak value of 40,000 N in 10-4 s and then decreases linearly to in another 10-4 s. (The moment of inertia for a solid ball ismR2) a) What is the velocity of...
2. A homogeneous solid ball of mass m and radius r rolls without slip on a...
2. A homogeneous solid ball of mass m and radius r rolls without slip on a seesaw. The distance to their contact point from the hinge of the seesaw is x, and the angle of the seesaw w.r.t. the horizontal line is 8. The moment of inertia of the seesaw about its hinge is I, and the moment of inertia of the ball about its central axis is mr2. Find the kinetic energy T and the potential energy V of...
2) A solid uniform ball of mass m and radius r rolls down a hemispherical bowl...
2) A solid uniform ball of mass m and radius r rolls down a hemispherical bowl of radius R, starting from a height h above the bottom of the bowl. The surface on the left half of the bowl has sufficient friction to prevent slipping, and the right side is frictionless. R (a) (5 marks) Determine the angular speed w the ball rotates in terms of e', when it rolls without slipping. (b) (5 marks) Derive an expression for the...
2. An iron ball of radius 5 cm is to be heated from 20°C to 100°C...
2. An iron ball of radius 5 cm is to be heated from 20°C to 100°C in 10 minutes. The average heat flux that needs to be supplied is: [P-8950 kg/m, C,-0.45 kJ/kg."C] 1636 W2100 6l6 Wm f h oe 1636 W/m 3616 W/m None of the above 5169
2. The absorbance of a 2.31 % 10 M solution of a compound is 0.822 at...
2. The absorbance of a 2.31 % 10 M solution of a compound is 0.822 at a wavelength of 266 nm in a 1.00 cm cell. Calculate the molar absorptivity at 266 nm. The following absorption data were calculated in an experiment: Absorbance 0.000 0.00 0.181 0.271 0.361 0.450 0.539 0.627 0.7 Concentration 0.000 1x10-3 2x10-3 3x10-3 4x10- 5x10- 6x10 3 7x10- 8x1 (M) Plot Absorbance vs. Concentration and a) calculate the molar absorptivity coefficient from the slope if the...
Question 3 (30 pts) The ball B has a mass of 10 kg and is attached...
Question 3 (30 pts) The ball B has a mass of 10 kg and is attached to the end of a rod whose mass may be neglected. The rod is subjected to a force F = 10t2, where t is in seconds and F is in Newtons. If the ball has an initial velocity of v= 5 m/s when t=0 determine; a) the time required for the ball to reach a velocity of v= 15 m/s, b) the tension on...
2. The absorbance of a 2.31 x 10 a wavelength of 266 nm in a 1.00...
2. The absorbance of a 2.31 x 10 a wavelength of 266 nm in a 1.00 cm cell. absorptivity at 266 nm. M solution of a compound is 0.822 at Calculate the molar The following absorption data were calculated in-an experiment: 3. Absorbance 0.000 0.090 0.181 0.271 0.361 0.450 0.539 0.627 0.7 Concentration (м) 0.000 1x10-3 2x10-3 3x10 3 4x10-3 5x10~3 6x10-3 7x10-3 8x1 Plot Absorbance vs. Concentration and calculate the molar absorptivity coefficient from the slope if the a)...
The figure on the right illustrates a ball which is a uniform solid sphere having mass M and radi...
The figure on the right illustrates a ball which is a uniform solid sphere having mass M and radius R. The ball is initially traveling in the positive direction with pure translational motion along a friction-less region of a horizontal surface (i.e. it slips with angular speed ω0-0). The initial translational speed of the ball is Vo. The friction-less region extends to a region having coefficient of kinetic friction Figure for WAH #10 V. Friction Friction-less No longer slipping '...
A hollow ball with mass m = 0.1 kg and radius R = 5 cm is...
A hollow ball with mass m = 0.1 kg and radius R = 5 cm is sliding across a flat frictionless surface with an initial speed v = 5 m/s. At x = 0, it encounters a patch of ground with coefficient of kinetic friction μk = 0.3. The ball is initially not rotating but the friction causes it to start spinning. How far will it travel along that surface before it begins rolling without slipping. For this problem, assume...
9. A ball attached to a string of length 60 cm is spun in a uniform...
9. A ball attached to a string of length 60 cm is spun in a uniform circle with a constant velocity at the rate of 10 rev/s. What is the centripetal acceleration of the ball? 10. A car drives with constant speed of 90 km/h around a roundabout with a diameter of 50 m. What is the centripetal acceleration of the car? 11. The velocity of a particle is v(t) (2-2t) i+ (6t +2) jm/s What is the magnitude and...
2) A uniform solid ball has a mass of 20 g and a radius of 5 cm. It rests on a horizontal surface. A sharp force is applied to the ball in the horizontal direction 9 cm above the surface. The force rises linearly from 0 to a peak value of 40,000 N in 10-4 s and then decreases linearly to in another 10-4 s. (The moment of inertia for a solid ball ismR2) a) What is the velocity of...
2. A homogeneous solid ball of mass m and radius r rolls without slip on a seesaw. The distance to their contact point from the hinge of the seesaw is x, and the angle of the seesaw w.r.t. the horizontal line is 8. The moment of inertia of the seesaw about its hinge is I, and the moment of inertia of the ball about its central axis is mr2. Find the kinetic energy T and the potential energy V of...
2) A solid uniform ball of mass m and radius r rolls down a hemispherical bowl of radius R, starting from a height h above the bottom of the bowl. The surface on the left half of the bowl has sufficient friction to prevent slipping, and the right side is frictionless. R (a) (5 marks) Determine the angular speed w the ball rotates in terms of e', when it rolls without slipping. (b) (5 marks) Derive an expression for the...
2. An iron ball of radius 5 cm is to be heated from 20°C to 100°C in 10 minutes. The average heat flux that needs to be supplied is: [P-8950 kg/m, C,-0.45 kJ/kg."C] 1636 W2100 6l6 Wm f h oe 1636 W/m 3616 W/m None of the above 5169
2. The absorbance of a 2.31 % 10 M solution of a compound is 0.822 at a wavelength of 266 nm in a 1.00 cm cell. Calculate the molar absorptivity at 266 nm. The following absorption data were calculated in an experiment: Absorbance 0.000 0.00 0.181 0.271 0.361 0.450 0.539 0.627 0.7 Concentration 0.000 1x10-3 2x10-3 3x10-3 4x10- 5x10- 6x10 3 7x10- 8x1 (M) Plot Absorbance vs. Concentration and a) calculate the molar absorptivity coefficient from the slope if the...
Question 3 (30 pts) The ball B has a mass of 10 kg and is attached to the end of a rod whose mass may be neglected. The rod is subjected to a force F = 10t2, where t is in seconds and F is in Newtons. If the ball has an initial velocity of v= 5 m/s when t=0 determine; a) the time required for the ball to reach a velocity of v= 15 m/s, b) the tension on...
2. The absorbance of a 2.31 x 10 a wavelength of 266 nm in a 1.00 cm cell. absorptivity at 266 nm. M solution of a compound is 0.822 at Calculate the molar The following absorption data were calculated in-an experiment: 3. Absorbance 0.000 0.090 0.181 0.271 0.361 0.450 0.539 0.627 0.7 Concentration (м) 0.000 1x10-3 2x10-3 3x10 3 4x10-3 5x10~3 6x10-3 7x10-3 8x1 Plot Absorbance vs. Concentration and calculate the molar absorptivity coefficient from the slope if the a)...
The figure on the right illustrates a ball which is a uniform solid sphere having mass M and radius R. The ball is initially traveling in the positive direction with pure translational motion along a friction-less region of a horizontal surface (i.e. it slips with angular speed ω0-0). The initial translational speed of the ball is Vo. The friction-less region extends to a region having coefficient of kinetic friction Figure for WAH #10 V. Friction Friction-less No longer slipping '...
9. A ball attached to a string of length 60 cm is spun in a uniform circle with a constant velocity at the rate of 10 rev/s. What is the centripetal acceleration of the ball? 10. A car drives with constant speed of 90 km/h around a roundabout with a diameter of 50 m. What is the centripetal acceleration of the car? 11. The velocity of a particle is v(t) (2-2t) i+ (6t +2) jm/s What is the magnitude and...
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